worried about trees? you can take notes on stone paper made from rock - cnet

worried about trees? you can take notes on stone paper made from rock - cnet

The paper is waterproof, durable and more environmentally friendly, Karst and other stone paper companies argue. No trees are needed, of course, but also no bleaches and comparatively little water. It's even gained enough attention to irritate traditional papermakers.

Rock dust may not sound like an ideal ingredient for paper, but it works. Karst's paper is made of about 80% calcium carbonate, the main ingredient in limestone and marble. A Taiwanese supplier, Taiwan Lung Meng Advanced Composite Materials, pulverizes the rock left from construction and quarries, fuses it with plastic that holds it together, then compresses it with massive rollers until it's paper-thin.

The environmental benefits of stone paper aren't entirely clear, especially given some serious limits on recycling. But it's one example of some of the fundamental rethinking happening today as researchers and businesses look for eco-friendly ways to get things done. Electric vehicles are making inroads on internal combustion engines, meat is being made from plants, quantum computers embrace the very physics that stymies ordinary machines, and 3D printers form products by putting material where it's supposed to go instead of grinding away the excess.

Australia-based Karst Stone Paper, which sells notebooks for $20 and hopes to expand to printer paper, is one of many brands you'll see. Others include ImStone, A Good Company, Rockstock and FiberStone, but you can find others with a search for "stone paper."Some companies use stone paper -- also called mineral paper -- for things like labels, bags, packaging and even food trays.

I tried out a compact Karst Stone Paper notebook -- look out, Moleskine -- and found it fine for taking notes in pen, though unfortunately it didn't improve my handwriting. My son's tests confirmed it worked with pencils and crayons, too.

The paper itself feels a bit smoother than conventional paper since it's made of tiny particles and not a rougher matting of plant fibers. But it's also tackier, like latex, and I experienced more drag as pen tips slid over the surface.

But because the paper is waterproof, the wet ink of fountain pens and felt-tip pens is a problem. That might be a bummer for an artist like Mattias Adolfsson, who likes old-school fountain pens, but most people won't have a problem.

Stone paper obviously doesn't use trees, a dwindling resource as forests disappear at an annual rate of about 13,000 square miles per year, according to the United Nations. Much paper comes from trees that the forestry industry plants specifically for later harvesting.

Calcium carbonate, in contrast, is a common mineral that in stone paper's case is collected from mining and construction waste -- at least at the current rate of stone paper manufacturing. You might be familiar with one common calcium carbonate incarnation, chalk.

Lung Meng and several stone paper sellers tout the paper's ecological advantages. A big one is lower water use. Stone paper production requires 27 gallons of water per metric ton, compared with 15,500 gallons for dead-tree paper, Karst says.

But one organization representing papermakers isn't happy with Karst's claims. "It has come to our attention that spreading misconception about killing trees to promote your product is impacting our industry negatively," wrote Kellie Northwood, CEO of Two Sides Australia and New Zealand, a group that represents forestry, paper and publishing companies, in an October letter to Karst. Two Sides didn't immediately respond to a request for comment.

When you want to toss your stone paper notebook, things get more complicated. Stone paper can be recycled, and indeed Karst Stone Paper and Lung Meng do so. Karst recommends tossing it into the bin that handles No. 2 plastic -- high-density polyethylene, or HDPE, the type stone paper uses.

But you'd better ask your local agency before tossing your leftover stone paper into the recycle bin. Stone paper isn't common, and sorters are likely to see it as paper. My recycler didn't know how to handle it at this stage. "It's hard to evaluate something we don't know about," said Julia Au, a spokeswoman for RethinkWaste, which handles recycling for several San Francisco Bay Area cities. One New Zealand recycler advises you just put stone paper in the trash can.

And a company that handles hundreds of tons of recycled material each day said it wouldn't put stone paper through either paper or plastic recycling processes. "This would be considered contamination for both of those markets," a representative said.

Still, there are those trees to think of. Forest growth is a good way to capture the carbon dioxide that's triggering global warming. And Karst Stone Paper encourages people to mail back used paper for its twice-yearly shipments to Lung Meng. Unlike tree-based paper, stone paper can be recycled over and over. Maybe someday recycling will be more widespread.

tailored solutions for lime processing plant - daswell machinery

tailored solutions for lime processing plant - daswell machinery

Lime processing plant is a lime production line to make lime which is also called quicklime. When limestone(calcium carbonate) is calcined, the decomposition of limestone will happen and produces quicklime(CaO) and carbon dioxide(CO).Since the temperature needed is high for the calcining, the limestone is often calcined in lime kilns, such as rotary lime kiln and vertical kiln. Of course, there are other machines for the lime processing plant. Daswell machinery, with rich experience and professional knowledge, offers tailored turnkey solutions for lime manufacturing plant, including plant designing and supplying of machinery. Daswell designed and built lime processing plant is of high cost efficiency and can produce high quality quicklime with great highness and uniformity. Lime Calcination Plant Lime calcination plant is also known as quicklime plant, lime processing plant, lime production plant or quicklime production plant. Lime calcination plant is a complete quicklime production line to produce quicklime(also known as burnt lime)by calcination of limestone which contains ...Get Solutions Lime Calcining Plant Upgrade Nowadays, when it comes to rotary lime kiln production line for lime calcining plant, people want the production line to be of high production capacities with low operating and capital expenditure. Besides, there are also mounting requirements for environmental protection ...Get Solutions Rotary Lime Kiln Rotary lime kiln is also called lime rotary kiln or limestone rotary kiln. It is used for the calcination of limestone to make quicklime. And specifically speaking, it is a slightly horizontal device that can rotate continuously to burn down ...Get Solutions Vertical Lime Kiln Vertical lime kiln is also called vertical kiln lime or vertical shaft kiln for lime. It is a vertical static device for the decomposition of limestone to produce quicklime/burnt lime. Vertical lime kiln is suitable for projects with smaller quicklime ...Get Solutions Vertical Preheater Daswell vertical preheater is an important heat recovery equipment of modern lime calcination plant. It is usually attached to the end of rotary lime kiln. Daswell vertical preheater preheats/pre-calcines limestone feed by using the exhaust hot gases from the limestone ...Get Solutions Lime Vertical Cooler The lime vertical cooler is often attached to the lower end of rotary lime kiln. Lime vertical cooler for rotary lime kiln has two main functions. One is to cool down burnt lime that has been treated in rotary lime ...Get Solutions

Daswell machinery is a leading manufacturer and supplier of quicklime plant and other mineral processing plants. We have rich experience and professional knowledge in delivering best suited lime plants for customers. In past several years, we have delivered several successful lime calcining plants for customers all over the world and has won the recognition of customers for high quality products and services. As a lime plant manufacturer, Daswell not only helps you with offering tailor-made solutions for the plant, but also provides quality lime plant equipment. Daswell is the one source supplier for you. And we always put customersinterests in the first place, providing quality and cost efficiency equipment for lime plant. As a result, the lime plant can work for a long period of time.

Lime calcining plant consists of a set of machines, while the lime kiln is the core equipment. Currently, there are mainly two kinds of lime kilns, one is rotary lime kiln and vertical lime kiln. Besides, there are many other machines. For example, there are crushers to crush the limestone into proper sizes. There are conveying systems to handle with the material. And there are silos to store the raw material and final product. For the consideration of environment, there are dust collectors to collect dust produced in the processing. Finally, there may have packing machines to pack the final product automatically. For modern rotary lime kiln system, there are often stand-alone vertical preheater and vertical coolers to reduce the length of rotary lime kiln the consumption of energy and improve the efficiency of the whole quicklime plant.

Mainly, there are several processes in the manufacturing of quicklime in lime plant. That is, the crushing process, conveying process, preheating, calcining and cooling systems, and dust collecting, finally the packing process. Firstly, the sifted and washed limestone will be crushed to proper sizes so as to feed in the kiln. Then the feed limestone will be transferred to raw material silo for use. For the preheating, calcining and cooling process, they are conducted in the vertical lime kiln itself , for the vertical shaft lime kiln consists of these three respective chambers. However, for the rotary lime kiln, it is also equipped with extra preheater and cooler. The feed limestone is preheated in the preheater with the hot exhausted air from rotary lime kiln. And the preheated limestone will go to the rotary lime kiln for calcining. After the calcining process, the hot quicklime will be cooled down with vertical cooler so that they can be handled by conveyors. And then the burnt lime will go through dust collector. Finally, the quicklime will be stored in silo waiting for packing. Please fill the form below to get free quotes. We will reply in 24 hours. Product Model: Your Name(required): Your Email(required): Your Tel: Your country: Your Company: Your Message(required):

stone crushing plant - request for affordable stone crusher plant price

stone crushing plant - request for affordable stone crusher plant price

The stone crushing plantis a kind of equipment used for crushing different materials to get the sand and gravel aggregate. The materials it can crush include limestone, pebble, granite, basalt, ore tailings, construction waste, etc. Nowadays, this stone crusherplantfor saleis widely used in mining, metallurgy, building materials, transportation, water conservancy and other industries. A complete stone crusher machine for saleincludes different components, the vibrating feeder, crusher machine, vibrating screen, belt conveyor, etc. We can provide different configurations for customers according to the different raw materials of users and the different requirements for the particle size of finished products. Welcome to contact us if you have any demand!

Stationary type stone crusher batchingplantis more suitable for those large size and long-period of projects because it doesnt need to be moved frequently. This type of plant has the following features: flexible choice and strong adaptability; According to different crushing process requirements, it can be composed of first breaking and then screening, or the process of first screening and then breaking. Crushing equipment and screening equipment can also be used separately; large crushing capacity and high crushing efficiency.

Mobile type stone crusherplantcan solve the factor of site limitation well. It is flexible and convenient and can save a lot of infrastructure and relocation costs. Moreover, it can also carry out on-site crushing of materials, and move with the advance of the mining of raw materials, thus greatly reducing the transportation cost of materials.

For the stone crusher machine, the selection of crusher machine is vital. There are many kinds of crusher machines on the market, jaw crusher, cone crusher, impact crusher, hammer crusher and so on. You need to pick out a suitable crusher machine according to the size of your raw materials, hardness, the size of finished product and so on. Today I will introduce two types of crusher machine for you, jaw crusher and hammer crusher.

Jaw crusherfor saleis the earliest crushing equipment. Because of its simple structure, reliable work, simple maintenance and other advantages, is widely welcomed in the market. It is mainly used for the primary and medium crushing of various ores and bulk materials. And its maximum crushing capacity can reach 2200t/h.

The hammer crusher is also a popular crusher machine. It not only includes the hammer crusher, but also heavy hammer crusher. The hammer crusher has less wearing parts and is easy to maintain. You also can use it matching with the calcium carbonate processing plant.

If you want to know the stone crushing plant price, you should know what kind of machine you need. If you just need a single crusher machine, it is affordable for you. When you want to invest in a complete stone crusher, you need to ensure its configuration. Compared with the stationary type stone crusher vibrating screenwith the same output, the price of mobile type plant is a little higher because it is equipped with its own chassis.

The mobile type automatic stone crusherplantincludes rubber-tyred type and crawler type. They have different advantages. Because the rubber-tyred type mobile stone crushing plant for sale is highly adaptable to different terrains, more and more users are willing to buy it.

If you want to start a stone crusher plant business, you have a lot of preparation to do, looking for your site, buying the suitable plant, installation and debugging, routine maintenance and so on. Moreover, you have to take into account many factors, the whole stone crusher machine price, the distance between raw materials site and your construction site, the working period, etc.

Choose our Daswell stone crusher machine manufacturer, you dont worry about these problems. Our salesman will provide you with quality service throughout the process. They can visit your site and help you plan the site. In addition, they can give their professional advice to you. Of course, if you have any question, you can consult our salesman at any time. After receiving your message or call, they will reply you as soon as possible.

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