About coal powder

What is pulverized coal?

Pulverized coal is an irregular fine coal particle that is milled by coal mills. The particles are uniformly distributed in the range of 0.05 to 0.01 mm, and the particles below 20 to 50 μm (micrometer) account for the majority. Because the pulverized coal particles are small and have a large surface, they can absorb a large amount of air and have the property of being unremarkable in general solidity - activity. The smaller the particle size of the pulverized coal, the smaller the moisture content and the better its activity.

Pulverized coal application

Pulverized coal is mainly used for the molding of wet sand in blast furnace smelting and casting. The addition of coal powder to the wet sand of cast iron can prevent the surface sanding defects of the casting, improve the surface finish of the casting, and reduce the sand inclusion defects and improve the molding sand. The collapsing function can effectively prevent the generation of subcutaneous pores for wet ductile iron parts.

Pulverized coal production line process

Production Process

• Selection, bulk material is broken by crusher for primary crushing.
• The material after primary crushing is transferred to a secondary crusher by a counter crusher or a cone crusher.
• After the secondary crushed material, the material that meets the requirements is transferred to the mill for grinding and grinding. The unqualified material has the belt conveyor transferred to the first-stage crushing process until it meets the requirements. Powder machine for milling. The grinding process is generally carried out using a medium speed coal mill.
• The final finished product is stored in a suitable place for storage.

Pulverized coal production line equipment

Common pulverized coal production line equipment includes a coal pulverizer such as a dryer and a jaw crusher or a counter crusher or a hammer crusher, together with a corresponding pulverized coal mill to complete the pulverized coal processing process. As a professional crusher and mill manufacturer, Shanghai Shibang also provides a very targeted coal crusher and pulverized coal mill equipment for coal crushing and grinding.

Industry development prospects

China is a large coal-producing country that uses coal as its base to produce basic fuel. In recent years, China's energy industry has developed steadily, and the annual growth rate of power generation capacity is 7.3%. The power industry is developing rapidly. Increasing the comprehensive utilization of pulverized coal has become an important task in developing a circular economy and a low-carbon economy, and building a conservation-oriented society. It is conducive to the formation of production methods and consumption patterns that conserve resources and protect the environment, which is conducive to improving the quality and efficiency of economic growth, conducive to the establishment of a resource-saving society, to the promotion of harmony between man and nature, and to the people-oriented, comprehensive and sustainable The essential requirement of the concept of development is an inevitable choice for realizing the grand goal of building a well-off society in an all-round way.