Case of Guilin Hongcheng lime vertical grinding mill
Lime is a kind of gas inorganic cementing material with calcium oxide as the main component, which plays a very important role in the process of steel steelmaking. What is the role of lime powder in the process of steel steelmaking? What mill is used for steelmaking lime powder processing? Guilin Hongcheng lime grinding equipment factory introduces the processing technology of lime powder for steelmaking.
1.What effect does the steel mill use lime powder to have?
（1）.the removal of sulfur, phosphorus, silicon, arsenic and other harmful elements: because the oxides of these harmful elements are usually some acidic substances, so it is an effective method to combine them with some alkaline substances to form relatively stable compounds. However, block calcium oxide, with its rich source of raw materials and appropriate price, can form different compounds from the oxides of S, P, Si and As, and becomes an ideal choice for the removal of S, P, Si and As.
（2）Decarbonization: the results of modern metallurgy show that iron decarbonization is mainly indirect oxidation, oxygen first oxidation of iron, the middle of iron oxide in the oxidation of iron carbon, and the base of the slag CaO / SiO ₂ for slag iron oxide to the reaction interface migration diffusion has important influence, increase CaO in the slag, is conducive to iron decarbonization.
（3）Protective furnace lining: the acidic substance Fe ₂ O ₃ in the residue and SiO ₂ can easily react with the alkaline substance MgO in the furnace lining material to erode the furnace lining. Adding calcium oxide, these acidic substances preferentially react with calcium oxide. Therefore, starting from the protective furnace lining, calcium oxide is used as the slag material, which can effectively slow down the erosion speed of the furnace lining.
（4）Reduce iron splash: the acidic substance in the slag Fe ₂ O ₃ and SiO ₂ can easily react with the alkaline substance MgO in the furnace lining material to erode the furnace lining. Adding calcium oxide, these acidic substances preferentially react with calcium oxide. Therefore, starting from the protective furnace lining, calcium oxide is used as slag, which can effectively slow down the erosion rate of the furnace lining. Adding lime powder in molten steel or iron water is used as a slag making agent in the process of steelmaking or iron making, and harmful impurities such as sulfur or phosphorus in molten steel or iron water can also be removed in this process.
2.What mill is used for steelmaking lime powder processing?
The fineness of lime powder used in steel mills is usually about 120 mesh, and the amount of lime powder used for steelmaking is large, so the capacity of equipment is high. The grinding of Guilin Hongcheng vertical mill has the following advantages:
Technical parameters of Guilin Hongcheng vertical grinding mill
(1)Simple process flow, less auxiliary equipment, occupy a small area;
(2)Environmental protection, the whole process system is fully enclosed, negative pressure operation, do not run dust, dust emission reaches the national emission standard below 30 mg/m3, smooth process operation, the system noise is low;
(3)Equipment vulnerable parts loss is small, a set of vulnerable parts can work for more than 2 years;
(4)The whole system is produced by professional manufacturers, the production level is also quite advanced, so the process system operation efficiency is high, can run 24 hours uninterrupted, the equipment operation rate can reach more than 95%;
(5)Energy saving and electricity saving, compared with other equipment can save more than 50% of electricity。
(6)Good grinding effect: the process system has large capacity (the output of large equipment platform can reach more than 100 tons), high efficiency, the product can well meet the actual needs;
(7)Compared with other equipment at home and abroad, the whole system is simple, convenient operation and maintenance, the professional requirements for operators are not high, generally suitable for the preparation of lime powder in various types of domestic enterprises, and can save labor costs; Less equipment loss, less iron pollution, the color of the grinding product will not change, the whole process is closed negative pressure operation, do not discharge dust, and will not bring in pollutants.Consulting the price of Guilin Hongcheng lime vertical grinder, welcome to contact email: mkt@hcmilling.com
Post time: Mar-06-2024
