What grinding equipment is needed to process 200 mesh barite?
To process 200 mesh (about 75 microns) barite powder, it is necessary to select appropriate grinding equipment according to the raw material characteristics, output requirements and process requirements. The following are common equipment solutions and selection recommendations:
1. Barite processing characteristics and requirements
Material characteristics: Barite (barium sulfate) Mohs hardness 3-3.5, density 4.3-4.6g/cm³, grinding needs to take into account its high density and easy wear characteristics.
Fineness target: 200 mesh (74μm), medium fineness, taking into account powder fluidity and application requirements (such as drilling mud, coating filler, etc.).
Key requirements: strong wear resistance, low energy consumption, uniform finished product particle size, avoid over-crushing.
2. Recommended grinding equipment
1. Raymond Mill
Applicable scenarios: small and medium-sized production (3-40t/h), 200 mesh conventional fineness requirements.
Advantages:
Compact structure, low investment cost;
Finished product particle size 80-325 mesh adjustable, 200 mesh easily covered;
Equipped with a grading system, high powder uniformity.
Notes:
The raw materials need to be pre-crushed to ≤30mm, and pre-treated with a jaw crusher/hammer crusher;
Regularly replace the grinding roller and grinding ring (it is recommended to use high manganese steel material to resist wear).
2. High Pressure Grinding Mill
Applicable scenarios: medium and large-scale production (5-50t/h), taking into account efficiency and fineness stability.
Advantages:
High-pressure springs enhance the grinding force to adapt to the high-density characteristics of barite;
Finished product fineness 80-600 mesh, more flexible fineness adjustment;
Energy consumption is 10-15% lower than that of Raymond mill, with high comprehensive cost performance.
3. Vertical Roller Mill
Applicable scenarios: large-scale continuous production (5-400t/h), pursuing high output and low energy consumption.
Advantages:
Grinding rollers directly crush materials, with high grinding efficiency and 30-40% lower power consumption than Raymond mill;
Integrated drying function, can process raw materials with a moisture content of ≤15%;
High degree of automation and convenient maintenance.
Notes: The initial investment is relatively high, suitable for projects with long-term stable production.
