How to make easy to grind semi-coke? Which semi-coke grinding mill can be used to grind semi-coke?

Semi-coke, also known as semi-coke and coke powder, is a carbon material with high fixed carbon content produced by medium-low temperature dry distillation process using non-viscous or weak-viscosity high-volatile bituminous coal or lignite as raw material. Semi-coke has the characteristics of high fixed carbon, high specific resistance, high chemical activity, low sulfur, low phosphorus, etc., and has good environmental protection attributes. It is a clean coal-type energy actively promoted by the country. The application of semi-coke will become more and more extensive. However, the grindability of semi-coke is poor, and the traditional wind-swept coal mill is not suitable for grinding semi-coke. What should I do if the semi-coke is not easy to grind? What mill can be used to grind semi-coke? As a professional semi-coke grinding mill manufacturer, Guilin Hongcheng will answer your questions below. (References: Application of semi-coke in clinker production Liu Haotang[1], Mu Tingwei[1], Yangliu[2])

The structure of semi-coke is massive, the particle size is generally between 0 and 80mm, and the color is light black. Because the volatile matter, sulfur, nitrogen, and water of semi-coke are released during the dry distillation process, the pollutant content is only 10% of that of raw coal. ~20%, especially the sulfur is only 10% of raw coal, good environmental protection. At present, more than 60% of semi-coke is used as ferroalloy coke to produce ferrosilicon and calcium carbide, and a small amount is used as raw material for fertilizer production, blast furnace injection material and civil clean fuel. The structure and application fields of semi-coke determine that grinding is an important link in the processing of semi-coke. Semi-coke belongs to coking coal, which has high hardness and is not easy to grind, and its grindability is quite different from that of raw coal. The combustion characteristics of semi-coke determine that its grinding fineness should be finer than that of raw coal. If the semi-coke is ground together with the existing raw coal, it is easy to grind the raw coal too finely, which will cause a greater safety hazard to the coal grinding system. The moisture outside the semi-coke is too high, exceeding the moisture requirements of the air-swept coal mill for the raw coal entering the mill (Mf≤8%). The moisture entering the mill does not match the capacity of the drying chamber, resulting in high moisture in the pulverized coal exiting the mill.

Therefore, what should I do if the semi-coke is not easy to grind? These problems can be well solved by using a new type of semi-coke vertical mill. On the one hand, the requirements for the feed moisture of the vertical mill are not high, and high-humidity materials within 15% can be directly fed into the mill, which solves the problem of high moisture outside the semi-coke. On the other hand, the semi-coke vertical mill adopts the principle of rolling and precise particle size control. Compared with the ball mill structure of the traditional air-swept mill, there will be no over-grinding problem, which is safe and environmentally friendly. The vertical mill has its own hot air system, and the water content of the output is low. , very suitable for grinding semi-coke. In addition, the semi-coke vertical mill adopts the grinding roller limit device to avoid the severe vibration caused by the material breaking during the working time of the mill. Adopting a new grinding roller sealing device, the sealing is reliable, and there is no need for a sealing fan, which further reduces the oxygen content in the grinding mill and has excellent explosion suppression performance.

It is an ideal semi-coke grinding mill. Recently, a new energy company purchased a set of HLM semi-coke vertical mill for grinding blue carbon powder. The output fineness is 200 mesh, and the production capacity per machine is 27t/h. The operation effect is ideal, and it has been highly recognized by customers.

If you want to get more detail about semi-coke grinding mill, please contact mkt@hcmilling.com or call at +86-773-3568321, HCM will tailor for you the most suitable grinding mill program based on your needs, more details please check www.hcmilling.com. Our selection engineer will plan scientific equipment configuration for you and quote for you.