Lime Rotary Kiln
Advantages of rotary kiln in calcining active lime production line
- lime kiln furnacebelongs to open type calcination. The kiln body is simple, the air flow is smooth, the sulfur-containing flue gas can be discharged in time, and the sulfur in fuel is not easy to adhere to, so the sulfur content of products is low, which meets the requirements of steel-making. At the same time, the material rolling forward uniformly in the kiln, heating uniformly, product quality is stable, raw and over-burning rate is very low, and it can calcine high activity of steel-making lime. Under the same conditions, the activity of lime produced by rotary kiln is higher than that produced by gas kiln, with an average of over 30 ml. The activity of lime produced by rotary kiln is generally 340-380 ml, or even up to 400 ml.
- lime kilncan directly calcine 10-50mm fine-grained limestone. Ordinary mine products 0-30mm fine-grained limestone accounts for about 30-40% of the total output. This part of limestone can not be used in other kilns. With the concentrating of iron and steel raw materials, quicklime is gradually replaced by limestone in sintering, and fine limestone can not be comprehensively utilized. The construction of rotary kiln production line can not only make full use of high quality limestone mine resources, but also conform to the sustainable development policy of lime industry.
Activated lime is widely used in steel, alumina, magnesium, calcium carbide and power plant desulfurization and paper-making industry. Activated lime is an important auxiliary raw material for steel-making. The use of activated lime has a series of characteristics, such as improving the quality of steel, increasing production, reducing steel consumption and cost, and stabilizing operation. Practice has proved that all steel-making enterprises using active lime have achieved remarkable economic benefits. In recent years, the production of lime for steel-making in China has increased by 40%, but the high-grade lime with activity of more than 300 ml has increased from 27% to 29.5% of the total amount of steel-making lime, and only increased by 2.5%. Active lime rotary kiln of Jiangsu Pengfei Group has formed a series of 1000 tons per day products, which are exported to Vietnam, Russia, Central Africa, etc. on the basis of introducing and digesting advanced technology from abroad.
- Activated lime steel-making slagging is fast, desulfurization and dephosphorization ability is remarkable, and production efficiency can be increased by 5%~10%.
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