Dolomite is an important non-metallic mineral with a chemical composition of CaMg(CO₃)₂. It is widely used in metallurgy, building materials, chemicals, agriculture and other fields. When producing dolomite powder or dolomite sand and gravel aggregates, a professional production line is required to improve processing efficiency and product quality. The following is a detailed introduction to the dolomite production line.

1. Dolomite production process

After mining, dolomite needs to go through steps such as crushing, grinding, and sorting. Common production lines are mainly divided into two types:

Dolomite sand and gravel aggregate production line: production of sand and gravel for construction or metallurgical auxiliary materials.

Dolomite powder grinding production line: production of 200-3000 mesh fine powder for rubber, coatings, refractory materials and other industries.

2. Main equipment configuration

Depending on the different finished product requirements, the main equipment of the dolomite production line is different.

(1) Dolomite crushing production line (sand and gravel aggregate)

Primary crushing: jaw crusher (coarse crushing, feed particle size ≤1200mm) or heavy hammer crusher (suitable for medium and low hardness materials).

Medium and fine crushing: cone crusher (high-hardness dolomite) or impact crusher (medium hardness, good finished product particle shape).

Sand making and shaping: VSI or 5X sand making machine (such as Liming Heavy Industry VSI6X sand making machine) to improve the roundness of machine-made sand particles.

Screening and cleaning: circular vibrating screen (S5X series), bucket sand washer (to remove dust and impurities).

(2) Dolomite grinding production line (ultrafine powder)

Grinding machine:

Raymond mill (80-400 mesh, MTW European version mill has higher efficiency).

Vertical mill (LM series, suitable for large-scale 325-2500 mesh powder).

Ultrafine mill (HGM series, producing 2500-3000 mesh ultrafine powder).

Supporting equipment: elevator, pulse dust collector, packaging machine, etc.

3. Production line advantages

(1) High efficiency and energy saving: using automatic control system (such as PLC control) to reduce energy consumption and increase output.

(2) Environmental protection: equipped with dust removal and noise reduction equipment, in line with green mine requirements.

(3) Flexible adaptation: the process can be adjusted according to the hardness of the raw materials and the demand for finished products (such as dry/wet sand making).

4. Application Cases

A dolomite sand making project in Shandong: using "jaw crusher + cone crusher + sand making machine" three-stage crushing, with an hourly output of 500 tons, the finished product is used as highway aggregate.

Jiangsu dolomite powder production line: using LM vertical mill, with an annual output of 300,000 tons of 325 mesh dolomite powder, supplying the rubber filler market.

5. Investment advice

The investment in dolomite production line needs to consider the raw material characteristics (hardness, water content) and market demand (sand or powder). It is recommended to choose a reliable equipment supplier (such as Liming Heavy Industry, Shibang Group) and optimize the process to reduce long-term operating costs.

If you need a specific plan, you can contact professional manufacturers to obtain customized configuration and quotation.