Dolomite grinding machine

Dolomite grinding machine

Dolomite is a carbonate mineral with iron dolomite and manganese dolomite. Its crystal structure is like calcite, often rhombohedral. When it is cold diluted hydrochloric acid, it will slowly foam. Some dolomites emit orange-red light under the irradiation of cathode rays. Dolomite is the main mineral component of dolomite and dolomitic limestone. Dolomite can be used in building materials, ceramics, glass and refractory materials, chemicals and agriculture, environmental protection, energy conservation and other fields. Mainly used as a flux for alkaline refractory materials and blast furnace ironmaking; production of calcium magnesium phosphate fertilizer and preparation of magnesium sulfate; and production of glass and ceramic ingredients.

The development of dolomite has also led to the development of the grinding machinery and crushing machinery industry. In the process of using dolomite, the crusher must be used to crush it to a certain size, and then grinded to a certain fineness by a mill to fully utilize it in the industry. The development of milling machinery has guaranteed the processing of dolomite. The processing of dolomite can be used to process dolomite into ultrafine powder (the general fineness is 325 mesh – 3000 mesh). The use of processed dolomite is obtained. Great improvement and expanded its application field.


The ultra-fine mill (three-ring medium-speed mill) produced by Shanghai Kelirik Machinery Co., Ltd. can effectively process dolomite. The mill has one-time powder formation, low power consumption and more environmental protection. The characteristics are currently the preferred milling equipment for dolomite processing.

The complete configuration of dolomite mill includes hammer crusher, bucket elevator, storage bin, vibrating feeder, mill main machine, frequency classifier, double cyclone powder collector, pulse dust removal system, high pressure fan, Air compressor, electrical control system.

During operation, the main motor of the mill drives the spindle and the turntable through the reducer, and the roller pin on the edge of the turner drives dozens of grinding rollers to roll in the grinding ring raceway.

The original dolomite mineral material is broken into small particles by a hammer crusher and then sent to the storage bin by the hoist. Then, through the vibrating feeder and the inclined feeding pipe, the dolomite particles are evenly sent to the bulk material of the upper part of the turntable. On the plate.

The dolomite particles are scattered to the circumference of the circle under the action of centrifugal force, and fall into the raceway of the grinding ring, which is impacted, rolled and ground by the ring roller. After three layers of loop processing, the dolomite powder is turned into a high-pressure fan. The outside air is sucked into the machine, and the pulverized dolomite powder is brought into the classifier.

The impeller rotating inside the classifier re-grinds the coarse dolomite powder, and the fine powder that meets the requirements enters the cyclone dust collector with the airflow and is discharged from the lower discharge valve to be the final dolomite ultrafine powder. A small amount of fine dust is purified by a pulse dust collector and discharged through a fan and muffler.


In the case of the fineness of the dolomite powder and the same motor power, the output of the dolomite superfine mill is more than double that of the jet mill, the agitator mill and the ball mill;

Consumable parts have a long service life

The grinding roller and the grinding ring are forged with special materials, which greatly improves the durability. In the case of the same fineness of materials and finished products, the wearing parts of the dolomite superfine mill are 2-3 times longer than the wearing parts of the impact crusher and the turbo crusher, generally up to one year; This kind of mill has a service life of 2-5 years when processing calcium carbonate and calcite;

High safety and reliability

Since there are no rolling bearings and screws in the grinding chamber, there is no problem that the bearing and its seal are vulnerable, or the problem of destroying the machine due to loose screws;

High product fineness

The finished fineness of the dolomite powder processed by the mill can reach D97≤5μm at one time;

Small pollution to the environment

The use of environmentally-friendly pulse dust collectors and mufflers in the mill equipment greatly reduces dust and noise pollution to the surrounding environment.

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