At present, the main grinding equipments in the mining industry include: ball mills, Raymond mills, vertical mills, roller presses, mechanical impact mills, vibration mills, etc. In the grinding process, the choice of equipment is very impor
At present, the main grinding equipments in the mining industry include: ball mills, Raymond mills, vertical mills, roller presses, mechanical impact mills, vibration mills, etc. In the grinding process, the choice of equipment is very important and directly affects minerals. Utilization rate, production cost, product quality and economic benefits.
1. Ball mill
The characteristics of the ball mill are large grinding ratio, simple structure, standardized product series, easy replacement of wearable parts such as liners, mature technology, reliable operation, etc.; the ball mill can adapt to operations under different conditions, such as grinding and drying, grinding and mixing Simultaneously wait. But generally speaking, the efficiency of ball mills is not high, the energy consumption and medium consumption are relatively high, and the equipment is heavy and the operation noise is relatively large.
Ball mills are still widely used at home and abroad. Among them, grid type and overflow type ball mills are commonly used for non-metallic ore beneficiation; tube mills include grinding cement raw materials and grinding various types of cement clinker. Cement mills are mainly used in cement plants, but can also be used for grinding other materials in relevant industrial sectors. Short-tube ball mills are widely used for fine grinding of non-metallic minerals such as calcite, dolomite, quartz, and zircon sand.
2. Raymond Mill
Raymond mill has the advantages of stable performance, simple process, convenient operation, large processing capacity, and adjustable product size. It is widely used in calcite, marble, chalk, limestone, talc, wollastonite, gypsum, hard kaolin, Fine grinding of non-metallic minerals such as pottery clay, feldspar, barite, bentonite, graphite, tremolite, illite, sericite, etc.
3. Vertical mill
The vertical mill is the use of the relative movement of the grinding roller and the grinding disc to crush the material on the material bed. As one of the main advances in the dry ultra-fine processing technology of non-metallic mineral powder, the vertical mill equipment and technology is large-scale in the non-metallic mineral industry. In the practice and application of refined products, the advantages of high efficiency, energy saving and environmental protection have gradually emerged.
At present, vertical mills have been widely used in the production and processing of foreign white non-metallic minerals, and it has also been successfully used in China to crush heavy calcium, barite, limestone, gypsum, pyrophyllite, kaolin, cement raw materials and clinker, etc. Processing.
4. Roller press
Roller press is also called high-pressure roller mill. Compared with the traditional crushing ball mill system, the roller press has significant efficiency and energy-saving effects. It is known as a breakthrough in crushing engineering.
The roller press can be used for the crushing of cement raw materials and clinker, blast furnace slag, limestone, coal and other brittle materials, as well as for the crushing of iron ore, manganese ore, lead-zinc ore and polymetallic ore with higher hardness. It forms a closed circuit with the ATP vortex superfine classifier, which can be used for fine crushing and superfine crushing of limestone, dolomite, magnesite, zircon sand, etc.
5. Mechanical impact grinding
Mechanical impact mill is an important type of fine grinding and ultra-fine grinding equipment, which is widely used in coal series kaolin, calcite, marble, chalk, talc, pyrophyllite, mica, graphite, wollastonite, bentonite, diatomite, etc. Ultrafine crushing processing of non-metallic minerals below the hardness, chemical raw materials, pigments, pesticides, etc.
6. Vibration mill
Vibration grinding can be coarse grinding, fine grinding and ultra-fine grinding. It is suitable for non-metallic minerals and fine ceramic materials such as barite, tremolite, kaolin, coal powder, graphite, ferroelectric materials (such as magnesium titanate), etc. , Chemical raw materials, pigments, etc. crushing processing.
