characterization and beneficiation of iron ore tailings by selective flocculation | springerlink

characterization and beneficiation of iron ore tailings by selective flocculation | springerlink

In the present paper, an attempt has been made to beneficiate iron ore tailings by selective flocculation using guar gum and starch as flocculants along with sodium hexametaphosphate (SHMP) as the dispersant. The mineralogical studies carried out initially indicated the presence of hematite and goethite as major iron bearing mineral phases along with quartz and kaolinite as major gangue minerals. The selective flocculation process showed that the Fe grade could be enhanced from 58.24 to 65.32% Fe using starch as flocculant with a recovery of 62.08%. However, 63.2% Fe with a recovery of 68.04% was obtained using guar gum as the flocculant. The efficacy of the studies were analysed using separation efficiency which indicated higher separation efficiency with the tests employing starch as the flocculant along with SHMP.

The authors would like to gracefully acknowledge Steel Authority of India Ltd. for providing the iron ore slimes for this investigation and also Indian Bureau of Mines, Bengaluru for their kind support.

Kumar, R., Mandre, N.R. Characterization and Beneficiation of Iron Ore Tailings by Selective Flocculation. Trans Indian Inst Met 69, 14591466 (2016).

minerals | free full-text | recovering iron from iron ore tailings and preparing concrete composite admixtures | html

minerals | free full-text | recovering iron from iron ore tailings and preparing concrete composite admixtures | html

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iron ore tailing beneficiation method? - laboratory testing & general mineral processing engineering/design - metallurgist & mineral processing engineer

iron ore tailing beneficiation method? - laboratory testing & general mineral processing engineering/design - metallurgist & mineral processing engineer

We have one million ton of iron ore tailing material contains 48-49%Fe and having size of around 80% of 10 microns material. we have carried out number of experiments on flotation and HGMS , as its having very fineness we failed to achieve good results. can anybody suggest, what would be the best operation to process those material ?

We have done testing work with a pilot plant for recovering residual magnetite from the tailings in a concentarator plant here in Mexico. The results were encouraging and a full scale plant installed. The client was Arcelor Mittal. The technology is now being applied for non ferrous gravity concentration.

Thanks for your response. I forget to mention, we have also carried out some tests on spirals. I would like to know what kind of gravity equipment will gonna work out for these kind of material. If you don't mind you can share with me.

Liberated hematite sound pretty good for gravity separation with our equipment. The process is based on autogenous heavy media separation of the heavy hematite. The light gangue fraction is being elutriated. A two step gravity concentration process may work fine. I foresee an iron recovery above 80%, Testing work at pilot scale is recommended at this time. Regards. Javier

Its real challange to process such iron ore fine material of 10 micron and below sizes . Normally desliming is done at such fine sizes .It will be better to take sample and test in different process routes like spirals/wet tables/ WHIMS with different equipment and operating variables..

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dry iron ore beneficiation | iron ore separation - st equipment & technology

dry iron ore beneficiation | iron ore separation - st equipment & technology

Iron ore is the fourth most common element in earths crust. Iron is essential to steel manufacturing and therefore an essential material for global economic development. Iron is also widely used in construction and the manufacturing of vehicles. Most of iron ore resources are composed of metamorphosed banded iron formations (BIF) in which iron is commonly found in the form of oxides, hydroxides and to a lesser extent carbonates.

The chemical composition of iron ores has an apparent wide range in chemical composition especially for Fe content and associated gangue minerals. Major iron minerals associated with most of the iron ores are hematite, goethite, limonite and magnetite. The main contaminants in iron ores are SiO2 and Al2O3. The typical silica and alumina bearing minerals present in iron ores are quartz, kaolinite, gibbsite, diaspore and corundum. Of these it is often observed that quartz is the main silica bearing mineral and kaolinite and gibbsite are the two-main alumina bearing minerals.

Iron ore extraction is mainly performed through open pit mining operations, resulting in significant tailings generation. The iron ore production system usually involves three stages: mining, processing and pelletizing activities. Of these, processing ensures that an adequate iron grade and chemistry is achieved prior to the pelletizing stage. Processing includes crushing, classification, milling and concentration aiming at increasing the iron content while reducing the amount of gangue minerals. Each mineral deposit has its own unique characteristics with respect to iron and gangue bearing minerals, and therefore it requires a different concentration technique.

Magnetic separation is typically used in the beneficiation of high grade iron ores where the dominant iron minerals are ferro and paramagnetic. Wet and dry low-intensity magnetic separation (LIMS) techniques are used to process ores with strong magnetic properties such as magnetite while wet high-intensity magnetic separation is used to separate the Fe-bearing minerals with weak magnetic properties such as hematite from gangue minerals. Iron ores such goethite and limonite are commonly found in tailings and does not separate very well by either technique.

Flotation is used to reduce the content of impurities in low-grade iron ores. Iron ores can be concentrated either by direct anionic flotation of iron oxides or reverse cationic flotation of silica, however reverse cationic flotation remains the most popular flotation route used in the iron industry. The use of flotation its limited by the cost of reagents, the presence of silica and alumina-rich slimes and the presence of carbonate minerals. Moreover, flotation requires waste water treatment and the use of downstream dewatering for dry final applications.

The use of flotation for the concentration of iron also involves desliming as floating in the presence of fines results in decreased efficiency and high reagent costs. Desliming is particularly critical for the removal of alumina as the separation of gibbsite from hematite or goethite by any surface-active agents is quite difficult. Most of alumina bearing minerals occurs in the finer size range (<20um) allowing for its removal through desliming. Overall, a high concentration of fines (<20um) and alumina increases the required cationic collector dose and decreases selectivity dramatically. Therefore desliming increases flotation efficiency, but results in a large volume of tailings and in loss of iron to the tailings stream.

Dry processing of iron ore presents an opportunity to eliminate costs and wet tailings generation associated with flotation and wet magnetic separation circuits. STET has evaluated several iron ore tailings and run of mine ore samples at bench scale (pre-feasibility scale). Significant movement of iron and silicates was observed, with examples highlighted in the table below.

The results of this study demonstrated that low-grade iron ore fines can be upgraded by means of STET tribo-electrostatic belt separator. Based on STET experience, the product recovery and/or grade will significantly improve at pilot scale processing, as compared to the bench-scale test device utilized during these iron ore trials.

iron ore beneficiation technology and process,gravity and magnetic separation | prominer (shanghai) mining technology co.,ltd

iron ore beneficiation technology and process,gravity and magnetic separation | prominer (shanghai) mining technology co.,ltd

Iron ore is one of the important raw materials for the production of pig iron and steel in the iron and steel industry. There are many types of iron ore. According to the magnetic properties of the ore, it is mainly divided into strong magnetism and weak magnetism. In order to improve the efficiency and production capacity of ore dressing and meet the smelting production requirements of iron and steel plants, appropriate and technology should be selected according to the different properties of different iron ore during beneficiation to achieve better beneficiation effects.

The composition of iron ore of a single magnetite type is simple, and the proportion of iron minerals is very large. Gangue minerals are mostly quartz and silicate minerals. According to production practice research, weak magnetic separation methods are often used to separate them. In a medium-sized magnetic separation plant, the ore is demagnetized and then enters the crushing and screening workshop to be crushed to a qualified particle size, and then fed to the grinding workshop for grinding operations. If the ore size after grinding is greater than 0.2 mm, one stage of grinding and magnetic separation process is adopted; if it is less than 0.2 mm, two stages of grinding and magnetic separation process are adopted. In order to increase the recovery rate of iron ore as much as possible, the qualified tailings may be scavenged and further recovered. In areas lacking water resources, a magnetic separator can be used for grinding and magnetic separation operations.

Because magnetite is easily depleted under the effect of weathering, such ores are generally sorted by dry magnetic separator to remove part of gangue minerals, and then subjected to grinding and magnetic separation to obtain concentrate.

The magnetite in the polymetallic magnetite is sulfide magnetite, and the gangue mineral contains silicate or carbonate, and is accompanied by cobalt pyrite, chalcopyrite and apatite. This kind of ore generally adopts the combined process of weak magnetic separation and flotation to recover iron and sulfur respectively.

Process flow: the ore is fed into the magnetic separator for weak magnetic separation to obtain magnetite concentrate and weak magnetic separation tailings, and the tailings enter the flotation process to obtain iron and sulfur.

The common process flow in actual production is: the raw ore is fed into the shaft furnace for roasting and magnetization, and after magnetization, it is fed into the magnetic separator for magnetic separation.

Gravity separation and magnetic separation are mainly used to separate coarse-grained and medium-grained weakly magnetic iron ore (20~2 mm). During gravity separation, heavy medium or jigging methods are commonly used for the gravity separation of coarse and very coarse (>20 mm) ores; spiral chutes, shakers and centrifugal concentrators for medium to fine (2~0.2mm) ores, etc. Reselect method.

In magnetic separation, the strong magnetic separator of coarse and medium-grained ore is usually dry-type strong magnetic separator; the fine-grained ore is usually wet-type strong magnetic separator. Because the grade of concentrate obtained by using one beneficiation method alone is not high, a combined process is often used:

Combination of flotation and magnetic separation: the magnetite-hematite ore of qualified particle size is fed into the magnetic separator for weak magnetic separation to obtain strong magnetic iron ore and weak magnetic tailings, and the tailings are fed into the magnetic separator for weak magnetic separation. In strong magnetic separation, strong magnetic separation tailings and concentrate are obtained, and the concentrate is fed to the flotation machine for flotation to obtain flotation iron concentrate tailings.

Combined gravity separation and magnetic separation: similar to the combined flow of flotation and magnetic separation, only the flotation is replaced by gravity separation, and the products are gravity separation concentrate and tailings. These two combined methods can improve the concentrate grade.

The above are mainly the common separation methods and technological processes of strong and weak magnetic iron ore. The composition of natural iron ore is often not so simple, so in actual production, it is necessary to clarify the mineral composition, and use a single sorting method or a joint sorting method according to the corresponding mineral properties. Only in this way can the beneficiation effect be improved.

Prominer has been devoted to mineral processing industry for decades and specializes in mineral upgrading and deep processing. With expertise in the fields of mineral project development, mining, test study, engineering, technological processing.

10 best ore beneficiation plants for sale (with costs) | fote machinery

10 best ore beneficiation plants for sale (with costs) | fote machinery

Before purchasing an ore beneficiation plant, people have lots of concerns: Which equipment I should choose to process my iron ore? Is this ore processing flowsheet best? Can these machines help me remove sulfur in iron ore beneficiation? Would they increase the recovery rate of tailings?

Then how to choose the right ore beneficiation plant depends on a lot of factors including physical properties of raw ore, capacity demands, final ore product requirements, geological situations of ore mines, and so on.

Here Fote Group would love to share valuable information about mining market trends, ways to build a high-quality ore beneficiation plant, and ten different ore processing plants which have been proved successful by our customers. If you have any most pressing questions and concerns, please contact our professional engineers who can make customized solutions according to your actual situation.

Our ore beneficiation plants sale to many countries, such as India, Australia, the USA, the UK, Canada, Switzerland, Philippines, Malaysia, Thailand, South Africa, Sudan, Egypt, Kenya, Indonesia, Nigeria, etc.

Nowadays, with ways of ore processing are getting more and more diversified and intelligent, the investment is not only limited to gold ore beneficiation but enlarged to many other items. From precious metals to coal, and to non-ferrous metals, investors can profit and bring more economic benefits to society.

Over 80 kinds of ores are widely used minerals in the world. Due to large output and high international trade volume, there are the several most common and important ores such as iron ore, copper ore, gold ore, bauxite, coal, lead&zinc ore, nickel ore, tin ore, and manganese ore, etc.

Nothing can replace iron ore in developing infrastructures as well as coal ore in the electricity industry, those ores making a great contribution to countries' economic growth. Gold ore mining ranks in a top position, attracting lots of investment for closed relations between the gold price and currency market.

The screening and crushing process is used to release useful minerals from the gangue. Different types of crushers reduce large sizes of raw ore into smaller ones, then vibrating screen with different mesh would help to get the desired size of ores. During the process, how many crushers need to be installed according to your real situation.

Usually, there are crushers with three crushing stages: primary crushers like jaw crushers, secondary crushers like cone crushers, roll crushers and impact crushers, tertiary crushers like compound crushers and fine crushers. Vibrating screens also have different types: Circular motion vibrating screens, horizontal Screens, high-frequency Screens, and trommel/ drum screens.

Only by crushers cannot get ore products with fine granularity, that's why mill grinding machines necessary in the beneficiation process. The mill grinding process is almost carried out in two consecutive stages: one is dry grinding (coarse grinding) and the other is wet grinding (fine grinding). The key grinding equipment are ball mills and rod mills, and the latter is now mostly used for wet grinding to finally produce fine and uniform ore products.

The beneficiation process is most crucial during the whole plant, helping people extract high value and pure ore concentrate products from ores no matter its grade high or low. The beneficiation process can be carried out in a variety of ways as needed but you ought to select a piece of optimal equipment to avoid inefficiency and waste in the entire process. The most common beneficiation equipment includes flotation machines, electrostatic and magnetic separators, and gravity beneficiation equipment.

Ore drying equipment may appear in any stage of a mineral processing plant (from raw ore-concentrate-finished product). The purpose of drying is to remove the moisture contained in the ore, ensuring the integrity of the product, and maximizing the value. In addition, drying process can also reduce product transportation costs and improve the economic efficiency of storage and processing.

With almost 50 years' extensive experience, Fote engineers are professional in integrating, designing, fabricating, commissioning, maintaining, and troubleshooting various beneficiation plants. The company aims to provide customers with the best mining equipment and the most reasonable beneficiation plants. Its final goal is to increase the potential profit that customers can obtain from the ore and enable mining companies to improve the overall profitability.

5TPH low-grade gold ore beneficiation plant in India 10 TPH gold ore beneficiation plant in South Africa 20-35TPH gold ore beneficiation plant in Egypt 10 TPH iron ore beneficiation plant in the USA 10-50TPH copper ore beneficiation plant in Pakistan 50-100TPH manganese ore beneficiation plant in Kenya 150TPH Bauxite ore beneficiation plant in Indonesia 50TPH lateritic nickel ore beneficiation plant in Philippines 200TPH zinc & lead ore beneficiation plant in Nigeria 250TPH chrome ore beneficiation plant in Russia

As a leading mining machinery manufacturer and exporter in China, we are always here to provide you with high quality products and better services. Welcome to contact us through one of the following ways or visit our company and factories.

Based on the high quality and complete after-sales service, our products have been exported to more than 120 countries and regions. Fote Machinery has been the choice of more than 200,000 customers.

iron ore conference 2021

iron ore conference 2021

Delivered both in person and online, this outstanding technical conference will address current and future challenges impacting the technical and management aspects of the iron ore industry along with discussion on genesis, geology, exploration, mining and processing of iron ores, bringing solutions to address the carbon footprint of iron and steel mining.

a review of rare-earth elements extraction with emphasis on non-conventional sources: coal and coal byproducts, iron ore tailings, apatite, and phosphate byproducts | springerlink

a review of rare-earth elements extraction with emphasis on non-conventional sources: coal and coal byproducts, iron ore tailings, apatite, and phosphate byproducts | springerlink

Primary economical deposits of rare-earth elements (REEs) are exhausting all over the world, and it has become necessary to find new sources and methods for their extraction. In addition, increasing the application of REEs in modern technological society has increased its demand globally. One of the important movements to compensate for the future shortages of critical metals is the recovery of REEs from recyclable materials. This paper presents a review of the classification and extraction methods, as well as general applications of REEs with emphasis on secondary sources such as coal and coal byproducts, iron ore tailings, apatite, and phosphate byproducts. An overview of the current state of knowledge on the various methods of REE beneficiation and extraction is covered. These methods include physical separation, as well as hydrometallurgical and bio-hydrometallurgical techniques. The application of these REE extraction techniques for enhanced recovery has been driven primarily by the unique industrial application of these important elements. This paper further explores the existing and potential environmental challenges associated with REE extraction. The authors have presented a wide array of literature, in-depth discussion of the subject, and a succinct summary of processes and relevant case studies.

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Dai, S., et al., Abundances and distribution of minerals and elements in high-alumina coal fly ash from the Jungar Power Plant, Inner Mongolia, China International Journal of Coal Geology, 2010. 81(4): p. 320332

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the beneficiation techniques for 5 types of iron ores in vietnam | hxjq

the beneficiation techniques for 5 types of iron ores in vietnam | hxjq

In the past decades, infrastructure construction has promoted the development of steel and played a huge role in economic take-off in Vietnam. However, limited by the beneficiation techniques and processes, the production of steel can't satisfy the requirements of construction.

Most of the iron mines are located in the northern regions and all are distributed in the coastal areas. Vietnam's iron ore has an outstanding advantage of high grade which can save a lot of beneficiation processes and bring more development value.

In general, the crushing process consumes about 8% to 10% of the whole energy consumption, and grinding process accounts for about 45% to 55% as well, among which the power cost, and the costs of mill's balls and liner accounts for 90% of the beneficiation fees.

According to the above table, it can be seen that continuous grinding low-intensity magnetic separation high-intensity magnetic separation anionic reverse flotation process can achieve the highest iron recycling rate.

Process one requires fine grinding, which makes the ore ground to the particle size of all the basic monomers for separation by continuous grinding, preventing re-grinding of the stage grinding process and saving more energy.

At the same time, with the increase of mining depth, the FeO content in ore changes greatly. Because high-intensity magnetic separation and anionic reverse flotation have strong adaptability to the fluctuation of FeO content, the whole process can adapt to the change of FeO content to the maximum extent.

At present, the most advanced beneficiation technique of siderite is bulk flotation, which can highly improve the recycling rate of iron and get some copper concentrates and sulfur concentrates, and the detailed process is as follows:

Theoretically, being rich in crystal water, limonite has a low grade. The iron concentrates can hardly be reached up to 60% according to physical dressing. Meanwhile, limonite is easy to be sliming and seriously loses, which results in a lower recycling rate of iron.

Limonite is crushed into the size of 3 mm and sent to the ball mill for grinding into 200 mesh, setting the pulp density of 50% to 60%. After screening by the high-frequency screen of 200 mesh, the pulp density is adjusted into 20% to 25%, and the larger iron particles are sent back to the ball mill for further grinding.

Add about 100g to 200g of inhibitor and 100g-150g collector into the adjusted pulp, stir for 2 to 3 minutes, and take reversely flotation for 10-12 minutes at normal temperature and PH=7 to obtain high-grade limonite concentrates.

Sulfur and phosphorus associated with iron ore is more harmful to iron ore' applications, and when processing and smelting iron ore, sulfur and phosphorus are more difficult to remove. When there is a certain amount of sulfur and phosphorus in the iron and steel, it will seriously damage the mechanical properties of steel products.

The experiment shows that the highest grade of iron concentrate can be obtained by the process of stage grinding high-gradient strong magnetic separation discarding tails flotation to remove phosphorus reverse flotation.

Vietnam's iron ore is widely distributed and abundant in reserves, but the comprehensive processing technology and economic level are relatively lower, resulting in the low utilization rate of iron ore resources, and even a large number of iron minerals are not developed.

Choosing suitable ore processing technology and special production equipment can not only give full play to the advantages of iron ore resources, but also be able to deeply explore the value of different grades of iron ore.

With more than 40 years of development, Hongxing Mining Machinery as a professional processing equipment manufacturer produces various mining machines by mature advanced technology. And all the machines' quality can be guaranteed.

All the dressing equipment adopts innovative technology and improves the backward equipment to reduce the energy consumption in the production process. The equipment is made of new wear-resistant material, which can effectively extend the service life of the equipment and save production resources.

controlling the rheology of iron ore slurries and tailings with surface chemistry for enhanced beneficiation performance and output, reduced pumping cost and safer tailings storage in dam - sciencedirect

controlling the rheology of iron ore slurries and tailings with surface chemistry for enhanced beneficiation performance and output, reduced pumping cost and safer tailings storage in dam - sciencedirect

Mining of iron ore from tailings demonstrated as a distinct possibility.Novel approach of using additives for easy processing and for safe tailings storage demonstrated.Cheap additives to reduce yield stress and another to make it paste-like at dam demonstrated.Viscosity and yield stress reduction by as much as 95% shown.

A method of reducing concentrated tailings viscosity and yield stress for ease of pumping and them improved the safety of tailings storage in dam and a method of mining iron ore from tailings using additives were discussed. A series of NaOH-phosphate-based composite additives were found to reduce the viscosity and yield stress of concentrated tailings. The extent of reduction in yield stress can be its complete elimination and viscosity by more than 95%. Slurry handling and processing problems of concentrated tailings such as long distance pipeline transportation to dams, will no longer be issues. At the pond, lime can be used to increase the yield stress significantly enhancing the safe storage of this tailing. With these additives, good separation between the colloidal and slime materials and coarse particles was easily achievable. The iron rich settled layer can contained a) more than 58% Fe upgraded from 55% Fe slurry and b) 54% Fe from tailings of 47% Fe after treatment with additives composing of NaOH-phosphate-based and NaOH-Na2SiO3-polyphosphate. Further beneficiation of iron rich layer by removing the coarse impurities can be achieved by other processes such as the magnetic WHIMS process. With these additives, the mineral slurries and tailings can be processed in a more concentrated form for beneficiation and transport. The environmental footprint is smaller as less process water and a smaller tailings pond are needed.

new reto project to conduct annual iron ore tailings treatment with capacity of three million tons and anticipated sales of approximately rmb 280 million

new reto project to conduct annual iron ore tailings treatment with capacity of three million tons and anticipated sales of approximately rmb 280 million

BEIJING, June 23, 2021 /PRNewswire/ -- ReTo Eco-Solutions, Inc. (NASDAQ: RETO) ("ReTo" or the "Company"), a provider of technology solutions for the improvement of ecological environments, today announced a new iron tailings project (the "Project") in the Hainan Province with a three-million-ton treatment capacity, which is expectedto yield approximately RMB 280 million (approximately US$43.7 million) annual sales after reaching production. .

ReTo will design, build and manage a facility in the Hainan Province and this latest project will be responsible for the largest volume of iron tailings in Hainan. ReTo was selected by the local government based on its patented technology, ability to implement and manage secondary sorting of iron tailings, selection and use of iron ore, and expertise in recycling the remaining ore and processing it into environmentally friendly building materials. The Company expects to generate RMB 131 million (approximately US$20.4 million) of gross profit from the Project.

The Company adopts the world's most advanced, mature and reliable technologies for production by adopting various systems such as three-stage crushing, two-stage screening, sand making and beneficiation. The remaining material from the Company's production can also be used as an aggregate to produce building materials.

Iron ore tailings, one of the most common solid wastes in the world, are a byproduct of the beneficiation process of iron ore concentrate. The volume of this type of waste has accelerated in China in recent years due to its rapid economical growth, and expansion in iron and steel industries. The high volume of waste generated creates a significant environmental and economic cost due to its massive land occupation and ecological damage, which result in safety hazard. Therefore, there is a greater need than ever for effective waste management systems and solutions.

Mr. Hengfang Li, ReTo's Chairman and Chief Executive Officer, said, "This is a great way for us to start 2021 as we continue to build on our business momentum from 2020. We have been a leader in Hainan's ecological and environmental protection industry for the past ten years. The construction of this latest project will help us build excellent reputation and improve track-record of success in the region. We will be providing a comprehensive recycling, capture and reuse solution, which will help mitigate the damaging effect of the existing waste problem, while at the same time helping to recover for reuse valuable iron resources that would otherwise be lost. There is also great significance to this project as it will showcase our one-stop, comprehensive solid waste utilization and ecological management strategy, while putting into practice our philosophy of using science and technology to restore ecology, as we strive to make the daily living environment more beautiful for Hainan's residents."

Founded in 1999, ReTo (NASDAQ: RETO), through its proprietary technologies, systems and solutions, is striving to bring clean water and fertile soil to communities worldwide. The Company offers a full range of products and services, ranging from the production of environmentally-friendly construction materials, environmental protection equipment, and manufacturing equipment used to produce environmentally-friendly construction materials, to project consulting, design, and installation for the improvement of ecological environments, such as ecological soil restoration through solid waste treatment. For more information, please visit:

This press release contains forward-looking statements. Forward-looking statements include statements concerning plans, objectives, goals, strategies, future events or performance, and underlying assumptions and other statements that are other than statements of historical facts. When the Company uses words such as "may," "will," "intend," "should," "believe," "expect," "anticipate," "project," "estimate," or similar expressions that do not relate solely to historical matters, it is making forward-looking statements. Specifically, the Company's statements regarding: 1) the ability of additional features and customized configurations on its machinery and equipment products to attract new customers; 2) the ability of the growth of its business to resume in the near future; and 3) the further spread of COVID-19 or the occurrence of another wave of cases and the impact it may have on the Company's operations are forward-looking statements. Forward-looking statements are not guarantees of future performance and involve risks and uncertainties that may cause the actual results to differ materially from the Company's expectations discussed in the forward-looking statements. These statements are subject to uncertainties and risks including, but not limited to, the following: the Company's goals and strategies; the Company's future business development; product and service demand and acceptance; changes in technology; economic conditions; the growth of the construction industry in China; reputation and brand; the impact of competition and pricing; government regulations; fluctuations in general economic and business conditions in China and assumptions underlying or related to any of the foregoing and other risks contained in reports filed by the Company with the Securities and Exchange Commission. For these reasons, among others, investors are cautioned not to place undue reliance upon any forward-looking statements in this press release. Additional factors are discussed in the Company's filings with the U.S. Securities and Exchange Commission, which are available for review at The Company undertakes no obligation to publicly revise these forward-looking statements to reflect events or circumstances that arise after the date hereof.

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