Coke powder is a by-product produced in the coking process. Because its particles are too small, when it accumulates in the blast furnace, the air flow will not be smooth, which will affect the normal running of the material column in the blast furnace, and cannot meet the requirements of metallurgical coke. Because coke powder has the properties of high carbon content, developed internal voids, and certain strength, Chinese scientific researchers have carried out extensive and in-depth research on how to use coke powder in recent years. HCMilling(Guilin Hongcheng) is a manufacturer of metallurgical coke grinding mill. The following is an introduction to the use of metallurgical coke grinding mill:

1. Activated carbon from metallurgical coke grinding powder: Activated carbon is a carbon material with developed microporous structure and strong adsorption capacity. It is widely used in various fields such as chemical industry, food processing, military protection and environmental protection industry. The performance of activated carbon is related to its specific surface area, micropore volume, pore size distribution and chemical composition. At present, the main raw materials for industrial preparation of activated carbon in my country are wood and coal. In recent years, due to the increasing shortage of energy and the country’s emphasis on environmental protection, people are constantly looking for alternative raw materials for the preparation of activated carbon. Coke powder is a by-product of the coking industry. It has high fixed carbon content, low volatile and ash content, high strength, and easy availability of raw materials. It is an excellent material for preparing activated carbon. At present, activated carbon is mainly produced by treating coke powder by physical activation and chemical activation. The physical activation method requires that the raw materials must be carbonized before activation, and then activated at 600 to 1200°C. The activator includes oxidizing gases such as CO2 and water vapor, and the carbon atoms in the oxidizing carbon oxide material of the gas are used to pass through. Activated carbon with well-developed pores is formed by the functions of opening, expanding and creating new voids. Chemical activation refers to mixing raw materials with activators (alkali metal and alkali metal hydroxides, inorganic salts and some acids) in a certain proportion, immersing them for a certain period of time, and then completing the carbonization and activation steps in one step.

2. Biochemical wastewater treatment by metallurgical coke grinding powder: adsorption method is a common method used to treat coking wastewater. Due to the developed internal voids of coke powder and good adsorption performance, some researchers in China have carried out research on coke powder treatment of coking wastewater. Zhang Jinyong uses coke powder activated by steam to adsorb biochemical wastewater from coking plant. After adsorption, the chemical oxygen demand (COD) of wastewater is reduced from 233mg/L to 50mg/L, reaching the national first-class discharge standard. Liu Xian et al. used coke powder for secondary adsorption treatment of coking wastewater, and studied the appropriate process conditions for coke powder adsorption of coking wastewater by static and dynamic continuous experiments. The research results show that the COD of the biochemical wastewater after advanced coke powder treatment can be reduced to less than 100mg/L, and the chromaticity removal rate can reach more than 60%, which meets the water quality requirements of coking enterprises.

3. Forming of metallurgical coke grinding powder with additives: the process coke powder itself has no adhesiveness, and it is usually used by adding a binder to it for pressing and forming. There are many types of coke powder additives, and the quality of the coke produced is not the same. Liu Baoshan used the compounding agent of humate, starch waste residue, coal slime, caustic soda and bentonite as the binder to study the amount of additives, the molding conditions of coke powder, the shape and particle size of the molding ball, and the drying temperature, and the The prepared balls were tested and fired, and the results showed that the coke powder balls had good strength and thermal stability, and could be used to generate gas artificially. Zhang Liqi used the coke powder and the tar residue produced by the gas generator to mix and shape according to a certain proportion, and then oxidized and carbonized to make the coke for gasification. The properties of the coke have reached the standard of gasification coke. It provides a theoretical basis for industrial production.

4. Metallurgical coke grinding powder to produce metallurgical coke: coke powder is usually used as a thinning agent in the coking process. Adding appropriate coke powder in the coking process can improve the quality of the coke. Due to the increasing shortage of coking coal resources in China, in order to expand coking coal resources and reduce the cost of coal blending, many coking enterprises have tried to use coke powder as a coal blending component for coking to improve the economic benefits of coke powder. Many enterprises in China have conducted research on the particle size and proportion of coke powder. Yang Mingping conducted an industrial production test on the basis of the small coke oven test. The results show that under the conventional top-loading coking process conditions, it is feasible to add 3% to 5% of coke powder to replace the lean coal for coking. The block degree increased, and the transaction rate increased by about 3%. Through research, Wang Dali et al. found that coking with coke powder has no obvious effect on the maximum reflectance of the vitrinite of the blended coal. However, through microscopic measurement, it was found that the coke powder particles larger than 0.2mm were independent in the coke, and it was difficult to integrate with other components, and the shape did not change; while the coke powder smaller than 0.2mm was easily wrapped by colloid, which was favorable for coke formation. The optimal proportion of coke powder is 1.0%-1.7%, the optimal particle size range is 98%-100% less than 3mm, 78%-80% less than 1mm, and 40%-50% less than 0.2mm.

Metallurgical coke grinding is inseparable from metallurgical coke grinding mill. As a manufacturer of metallurgical coke grinding mill, HCMilling(Guilin Hongcheng) produces metallurgical coke Raymond mill, metallurgical coke ultra-fine mill, metallurgical coke vertical roller mill and other equipment. It can produce 80-2500 mesh metallurgical coke powder and provide technical support for the application of metallurgical coke grinding powder.

If you have requirements for metallurgical coke grinding mill, please feel free to contact us for details of the equipment and provide follow information to us:

Raw material name

Product fineness(mesh/μm)

capacity (t/h)