Grid ball mill is a kind of equipment commonly used in mineral processing equipment, the row of ore side has a grid plate, grid plate with many small holes in order to discharge the pulp.
What is the grid ball mill and grid board? How does it work?
The grid plate is close to the side of the row of ore side, installation of a pulp lifting device, which is a radial edge strips, the edge strips of the space between the grid plate and end caps into several fan-shaped room leading to the hollow journal. When the mill rotates, the radial edge plays enhance the role of the pulp upgrade to a row of mine hollow journal, will be lattice panel holes slurry discharged from the mill are discharged through the hollow journal, so the work of the machine mainly characterized by forcing the row of ore, with higher productivity.
This type of mill is generally in the first paragraph of the grinding operation, can obtain high processing power, but the product particle size overflow type mill coarse granularity.
The ball mill to grind the material above the role of the material through the ball inside the cylinder is a tool for grinding a variety of materials. Been widely used in building materials, chemical, and mineral processing industries.
Crushed to a particle size of materials: building materials, metallurgy and chemical production in the mineral processing field, such as limestone, slag, gypsum, cement raw materials in the ore particles, according to process requirements, are also fine grinding operations.
The fine grinding operations workload is considerable, the heavy work, are currently in a ball mill. But the ball mill efficiency is very low (15% to 30%), consumed more electricity, the energy loss is serious, milled in metal consumption. Order to reduce production costs, we must understand the premise of these operating characteristics of the mill, according to the nature of the materials (hardness, moisture content how much), such as particle size and the grinding fineness of the finished product requirements, a reasonable choice of the grinding process and the fine grinding equipment. Compatible with the production improvements on existing equipment.
The mill’s energy efficiency is very low, and material distribution of a great relationship in the mill. The closer the cylinder outer trajectory, the greater the abrasive. When the actual production of the mill materials into the cylinder directly into the inner, the inner layer of material to go through a long time to enter the outer layer of fully milled, which lost a lot of energy.
In order to make the material distributed, to improve the mill feed part. Material slipped into a dip-type material at right angles to the old slide, so that the material slip angle is greater than the angle of repose, smooth material feeding. Select the feed point, the material directly into the cylinder outer layer. Finally, calculations and empirical data, to determine the material feeding device, material fill rate, the relevant parameters of the cylinder to adapt to the speed and mill power.
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