Production prospects and applications of mineral powder production lines
As a new admixture for high-performance concrete, slag powder has the advantage of improving various properties of concrete such as compression resistance, tensile resistance, shear resistance, and bending resistance. At present, it has become a mainstream trend in the building materials industry to replace the amount of cement in concrete and cement products with slag powder. At present, large domestic vertical (ball) mill manufacturers do not produce small and medium-sized equipment, and small vertical (ball) mill manufacturing factories do not have the design and manufacturing capabilities for the entire production line.
Ore powder production line process flow
The raw slag enters the feeding bin through the grab machine. After measurement, it is sent to the spiral feeding device by the conveyor belt and fed to the ZJTL vertical roller mill. The material in the mill moves from the center to the edge under the action of centrifugal force as the grinding plate rotates. After the solidification, degassing and grinding processes, the material is picked up by the hot air entering from the air ring at the edge of the grinding disc and dried instantly. The finer particles are brought to the powder separator for sorting, and the coarse powder returns to the grinding disc for further grinding. Qualified fine powder is brought into the bag dust collector for collection of finished products and separation of air and powder. After the finished products are collected, they are transported to the finished product bulk warehouse, and the exhaust gas is silenced by a fan and then discharged. Some large-grained materials that are difficult to grind (including iron nodules and iron slag) enter the external circulation system through the slag discharge port at the air ring. After iron removal, they are fed into the mill again by the elevator for grinding. The hot air required for drying and ventilation of the mill is provided by the hot air furnace, and the insufficient part is supplemented from the atmosphere by the cold air valve. The system has large air volume and strong drying capacity, and the moisture content of the grinding materials can reach 8-15%.
Two processes of mineral powder production line
1. Vertical mill production technology
Slag is transported into the factory by truck and stored in the material shed. The material is picked up by a forklift, measured by the hopper and quantitative feeder, and then sent directly to the vertical mill by a belt conveyor. An iron remover is installed on the conveyor to remove iron. The slag after iron removal enters the vertical mill for grinding. The dried and ground slag powder is collected by the bag dust collector and transported to the finished product warehouse by air chute and elevator. The material discharged from the vertical mill is re-fed into the vertical mill through the conveyor and elevator. The drying heat source is provided by a hot air stove.
2. Ball mill production process
Slag is transported into the factory by truck and stored in the material shed. The material is taken from the forklift, measured by the hopper and quantitative feeder, and then sent to the dryer for drying by the belt conveyor. The dried slag enters the ball mill for grinding, and the ground mineral powder is discharged from the hopper. The powder is sent to the powder separator for classification by the air chute and elevator, and the qualified particles are transported to the finished product warehouse by the air chute and elevator. Large particle mineral powder is returned to the ball mill for re-grinding. A dust collector is installed at the discharge end of the mill, and the micropowder collected by the dust collector is transported to the finished product warehouse by an air chute and an elevator. The drying heat source is provided by a hot air stove.