At present, the main grinding equipment in the mining field are: ball mill, Raymond mill, vertical roll mill, roller press, mechanical impact mill, vibration mill, etc. in the grinding process, the selection of equipment is very important, which directly affects the mineral utilization rate, production cost, product quality and economic benefits.

1. Ball mill

The ball mill is characterized by large crushing ratio, simple structure, standardized product series, easy replacement of easily worn parts such as lining plate, mature process and reliable operation; The ball mill can adapt to the operation under different conditions, such as grinding and drying, grinding and mixing at the same time, etc. However, generally speaking, the fine ore efficiency of the ball mill is not high, the energy consumption and medium consumption are high, and the equipment is bulky and the operation noise is large.

Ball mills are still widely used grinding equipment at home and abroad, among which lattice and overflow ball mills are common grinding equipment for non-metallic ore dressing; Tube mill includes cement raw material mill and cement mill for grinding various types of cement clinker. It is mainly used in cement plants and relevant industrial departments for grinding other materials. Short cylinder ball mill is 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 particle size. It is widely used in the fine grinding of non-metallic minerals such as calcite, marble, chalk, limestone, talc, wollastonite, gypsum, hard kaolinite, clay, feldspar, barite, bentonite, graphite, tremolite, illite and sericite.

3. Vertical mill

The vertical mill uses the relative movement of the grinding roller and the grinding disc to crush the material in the material bed. As one of the main advances in the dry ultra-fine processing technology of non-metallic ore powder, the vertical mill equipment and technology gradually show the advantages of high efficiency, energy saving and environmental protection in the large-scale industrial application and product refinement of non-metallic ore industry.

At present, the vertical mill has been widely used in the production and processing of white non-metallic ore industry abroad, and has been successfully used in the crushing and processing of heavy calcium, barite, limestone, gypsum, pyrophyllite, kaolin, cement raw materials and clinker in China.

4. Roller press

Roller press, also known as high-pressure roller mill, has significant high efficiency and energy-saving effect compared with the traditional crushing and ball milling system. It is known as a major breakthrough in crushing engineering.

The roller press can be used for crushing cement raw meal and clinker, blast furnace slag, limestone, coal and other brittle materials, as well as iron ore, manganese ore, lead-zinc ore and polymetallic ore with high hardness. It forms a closed circuit with ATP vortex ultra-fine classifier, which can be used for fine grinding and ultra-fine grinding of limestone, dolomite, magnesite, zircon, etc.

5. Mechanical impact mill

Mechanical impact mill is an important fine grinding and ultra-fine grinding equipment, which is widely used in the ultra-fine grinding of non-metallic minerals with medium hardness below coal series kaolin, calcite, marble, chalk, talc, pyrophyllite, mica, graphite, wollastonite, bentonite and diatomite, as well as chemical raw materials, pigments and pesticides.

6. Vibration mill

Vibration mill can be used for rough grinding, fine grinding and ultra-fine grinding. It is suitable for the crushing and processing of non-metallic minerals such as barite, tremolite, kaolin, pulverized coal, graphite and ferroelectric materials (such as magnesium titanate), fine ceramic raw materials, chemical raw materials and pigments.