How To Use Coal Powder Vertical Mill to Produce Foundry Coal Powder?

Coal powder for casting refers to the coal powder added to the molding sand in sand casting to prevent castings from sticking to sand. Coal powder is used for casting iron parts, and the hydrocarbons produced when heated are called bright carbon. High-quality pulverized coal ash (wB) not higher than 10% volatile matter (wB) 30% ~ 38% bright carbon (wB) content 10% ~ 18% sulfur (wB) not more than 45. more than 0.6%. coal ash The detection method is in accordance with GB/T212-91. So, how is foundry coal powder produced? HCMilling(Guilin Hongcheng), a professional manufacturer of foundry coal grinding mill, will give you detailed answers below.

The production of foundry pulverized coal generally adopts pulverized coal vertical grinding mill. The whole set of coal powder vertical mill system is widely used in the preparation of pulverized coal for casting, and the technology is relatively mature. The pulverized coal vertical mill adopts the principle of grinding roller and disc crushing, which can fully grind the pulverized coal to the fineness required for casting pulverized coal. At the same time, the whole equipment is equipped with co-o2 online analysis system, grinding roller hydraulic device and automatic electronic control device. The whole equipment makes the whole milling process safe, smart, convenient, energy-saving and environment-friendly.

How To Use Coal Powder Vertical Mill to Produce Foundry Coal Powder? During the pulverized coal production process, the main motor drives the grinding disc to rotate through the reducer, and at the same time, the hot air enters the vertical pulverized coal mill from the air inlet, and the raw coal falls to the center of the grinding disc through the feeding port. Under the action of centrifugal force, the raw coal flows from the center of the grinding disc Evenly moving to the edge, when passing through the grinding roller table area on the grinding table, it is crushed by the grinding roller, the large coal is directly crushed, and the fine-grained material is squeezed to form a material bed for intergranular crushing. The pulverized coal continues to move to the edge of the millstone until it is taken away by the strong airflow at the wind ring. Among the materials carried by the airflow, the larger particles fall back to the millstone under the action of their own gravity and continue to be crushed. The pulverized coal enters the high-efficiency dynamic separator with the flow for powder classification. Under the action of the blades of the high-efficiency dynamic separator, the materials that do not meet the fineness requirements are returned to the grinding table for grinding, while the pulverized coal that meets the fineness requirements is The air flows through the pipeline into the pulse dust collector for collection, and the finished powder is discharged through the discharge device. When the hard-to-grind debris such as iron blocks mixed with the material in the main machine moves to the edge of the millstone with the material, it cannot be blown up by the wind due to its heavy weight, and falls to the lower chamber of the mill to be scraped into the slag by the scraper plate installed at the bottom of the millstone After the mouth, discharge the outside of the host.

The pulverized coal vertical mill is used in pulverized coal grinding for foundry, and has obvious advantages in terms of grinding efficiency, production capacity, safe production, and environmental protection. At the same time, the pulverized coal vertical mill system has the characteristics of simple process flow and convenient maintenance, so its application is becoming more and more popular. Vertical mill enterprises will surely gain considerable economic benefits by strengthening technical optimization and market promotion in the field of coal grinding. If you want to know more about foundry pulverized coal production equipment, 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.