Usually controlling clinker calcining temperature in 1300 ~ 1450 ~ 1300 can ensures the quality of the clinker and sintering, for the current our country quite part of the manufacturer with the combination of ingredients (high KH, high SM) high strength clinker production, its raw material is easy to burn, clinker calcining temperature should be controlled moderately high, corresponding control in 1300 ~ 1500 ~ 1300 .
For the manufacturers with double-height (high KH, high SM) clinker ingredients, it is required to control the length of the calcining belt to be longer than normal and the calcining temperature to be higher, namely high-temperature long belt calcining, which is conducive to the improvement of clinker sintering and clinker quality. Generally, it is best to control the length of the calcining belt to be around 4.5 ~ 5.5Di.
The length to diameter ratio of clinker calcining kiln has a great influence on the quality, such as Nissan 2000 tons of calcining kiln L/D now some tend to be shorter design control, in order to design more control in about 10 ~ 11 factories, so beneficial to the improvement of the clinker quality. Mainly due to the low length to diameter ratio corresponding to shorten the length of the transition zone, short kiln was beneficial to the improvement of the clinker heating rate, also shortened the calcining system into the kiln burning raw materials, low-temperature aging time, is advantageous to the clinker C2S and f CaO clinker timely dissolve in liquid phase and the formation of C3S and crystallization, favorable for formation of clinker quality.
The diameter of the kiln size also have effects on the quality of clinker calcining, it is generally believed than small diameter of large diameter kiln was beneficial to the improvement of the quality of clinker calcining, on the one hand, because the kiln using high SM in ingredients, high KH ingredients, SM control in 2.8 ~ 3.2, KH control in 0.88 ~ 0.92, and large diameter kiln head spray into a large amount of coal, the flame temperature is high, some even as high as 2000 above, still can play ingredients of clinker calcining fully, the quality is good.
Small calcining kiln, due to its length, shorter than a large kiln. Kiln low speed should be controlled well, such as 3 x 48 m, 4 x 43 m. It is advantageous to the clinker quality, mainly because the kiln length is shorter, in order to ensure that the clinker in the short kiln high-temperature residence time, the kiln speed is lower control is more favorable.
Quality clinker formation requires preheater gas-solid decomposition furnace in high thermal efficiency, heat fast, transitional zone in the stove temperature stage requires rapid heating up, the main operating requirement is to moderate increase with uncooked materials, increasing calcination kiln speed frequency, shorten the length of the transition zone, extend the calcining zone length, the promotion of clinker mineral forming and sintering, high strength high-quality clinker burning requirements quickly quench burning, kiln head grate cooler operation requirements to strengthen a room, two-room high-pressure wind volume rapidly, strengthen the cold wind of high-temperature clinker cooling effect, so beneficial to the improvement of the quality of clinker. The Influence Of Kiln Atmosphere Coal in rotary kiln burning excess air coefficient to control the general at around 1.10 ~ 1.15, the oxygen concentration in the preheater waste gas control in 2% ~ 3% for the better, that maintain a micro oxidizing atmosphere, if low excess air coefficient control, lack of secondary air, easy to cause the reducing atmosphere, innovation in reducing atmosphere, can produce CO gas, and clinker is CO reduction into FeO, Fe2O3 ingredients in clinker liquid phase composition and viscosity, influence of clinker sintering, easy to produce a large number of clinker, yellow heart also waste heat and coal consumption, so as to affect the quality of clinker.
It is a classic powder grinding equipment in the power industry and has a high market share. Raymond mill is grown in technology, stable in performance, energy-saving and efficient, durable, and powdered at a time. The fineness can be adjusted freely.
Raymond mill is mainly used in mining, metallurgy, chemical, building materials, petrochemical, coal, smelting, fertilizer, medicine, infrastructure, roads, engineering, abrasives, food, feed, plastics, and other industries. The hardness of grinding materials is 7 grade, the humidity is about 8%, it can grinds various raw materials.
Finished products can be adjusted in arbitrarily about 30-350 mesh. It is processable for cement clinker, quartz sand, feldspar, calcite, lime, limestone , dolomite, barite, graphite, gold and silver ore, rutile, titanium dioxide, kaolin, bentonite, aluminum ore, coke gemstone, fluorite, wollastonite, phosphate rock, rare earth, iron red, metal silicon, electrolysis , niobium alloy, silicon carbide, gold steel sand, smelting metal, calcium magnesium ore, coal, activated carbon, humic acid, carbon black, grass ash, coal gangue, slag, zircon sand, iron ore, iron fine powder, talc , granite, potash feldspar, marble, barite, wax feldspar, clay, glass, coke, petroleum coke, water slag, slag, fly ash, cement, pigment, clay, ceramsite sand, saline, muddy sand Milling materials such as additives, fire-fighting agents, curing agents, waste ceramics, waste bricks, refractory materials, aluminum ore, bauxite, etc.
Raymond Mill has been widely used in the processing of non-metallic minerals since its introduction to China for more than 20 years. However, with the extensive development of non-metallic minerals in the application of ultra-fine powders, downstream enterprises are increasingly demanding non-metallic mineral products, especially for product fineness, which makes traditional Raymond mills powerless. So Dalil Heavy Industry Technology Department has carried out in-depth analysis and research on traditional grinding machines, and solved many fatal defects such as frequent maintenance, high maintenance cost, and insufficient fineness of grinding, and developed a set. A new ultra-fine Raymond mill that is crushed, ground and ultra-fine.
Due to its high efficiency, low energy consumption, ultra-fine refinement, small floor space, low capital investment and no pollution in the environment, it is widely used in the grinding of mineral materials in metallurgy, building materials, chemical industry, mining and other fields. Non-flammable and explosive minerals with Mohs hardness less than seven grades and a humidity below 6% is suitable such as gypsum, talc, calcite, limestone, marble, potash feldspar, barite, dolomite, granite, kaolin, bentonite, medical stone, bauxite, iron oxide red, iron ore, etc.
The main machine rotates the central shaft through the double belt combined transmission mechanism. The upper end of the shaft is connected with the plum blossom frame, and the grinding roller and the plum blossom frame are assembled to form a dynamic grinding system, and a swing fulcrum is formed. When the plum blossom frame rotates, the grinding roller presses the peripheral grinding ring to form a complete crushing combination, and the grinding roller rotates around the grinding ring while being rotated by the friction force. With the rigorous blade system, located in front of the grinding roller, during the operation, the material is thrown up and fed into the grinding ring to form a pulverized material layer. The material layer is crushed by the extrusion and friction generated by the rotation of the grinding roller. In order to achieve the purpose of grinding.
Non-flammable and explosive ore with a Mohs hardness of 6 or less and a humidity below 6%, such as calcium carbonate, graphite, bentonite, wollastonite, coal powder, water slag, fly ash, alumina, zircon sand , quartz sand, gypsum, talc, calcite, limestone, marble, barite, dolomite, granite, kaolin, bauxite, iron oxide red, iron ore, power plant environmental protection (desulfurization denitration).Get in Touch with Mechanic