Superfine Grinding Mill

Brief Introduction of Superfine Grinding Mill

The Superfine Grinding Mill which has the dual function of pulverization and classifying is a new equipment that has the features of novel design, compact structure, convenient overhaul, low energy consumption, steep fineness distribution and convenient operation. The equipment has the separable structure of grading and pulverization which are easy to be overhauled and cleaned. In the situation of no working, the range of fineness can be adjusted ,the fineness distribution is steep, the minimum fineness reaches to 5um,the vulnerable part is made of special wear-proof material.

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Application Fields of Superfine Grinding Mill

Superfine Grinding Mill used in the super-fine grinding of talc, wollastonite, kaolinite, barite, mica, graphite, vermiculite, pyrophyllite, brucite, silica, aluminum hydroxide and other material, chemical industry, food, pesticide superfine pulverizing, disintegrating.It’s the right machine which widely used in the super micro-pulverization of the industry such as chemical ,medicine, foodstuff, plastic, food and non-metal mine. The equipment has passed the appraisal of provincial new product, and be certified as national key new product, and be ranked in national technology innovation item and national torch project by Science and Technology Ministry.

Working Principles of Superfine Grinding Mill

After being crushed, material are carried into comminuting chamber by feeding system, the material will be impacted, abrasivesed, cut, compressed among the high speed rotating parts and grains to realize the superfine grinding. The ground material will be transported to the classifying- sections by the updraft airflow and the coarse particles and fine powders will be separated by centrifugal force of classifying wheels and draft fan. The unqualified powders will be returned to the grinding chamber. The qualified powders will enter the cyclone and the bag collector for collection. The purified gas will be discharged from the fan.

Performance and Characteristics of Superfine Grinding Mill

1.The maximum feeding size can be 30mm, and the product can be adjusted randomly from 5-150um.
2.Integrate with crushing and classifying to produce 2500 mesh (d97≤5um) directly.
3.Large capacity, the output of large Model can be more than 5 tons when produce 1250mesh, suitable for large capacity production.
4.High output, lower consumption, as the same energy, the output can be improved 2-4 times to compare with currently mill machine.
5.High precision of classification, correctly cutting point, no sieve particle size at all.
6.More disposition type of grinding, it also can grind light specific gravity material, fibrous material, high viscosity material, thermo-sensibility and high requirements of circuit particles material.
7.The restoration rate can be reached more than 99.99% for disintegrating of drier and calcined material.
8.The ratio between length and diameter can be reached 15:1 for milling spiculate material.
9.Strong stability of machine, small wear parts, can be used 24 hours without stopping for a long time.
10.Production under negative pressure, no flying dust and good working environment.

Features of Superfine Grinding Mill:

1. Low energy consumption: Our superfine impact mills integrated the functions of centrifugal mill, impact grinding mill, etc. together, thus enable a higher crushing capability and lower energy consumption;
2. High fineness: CWJ series impact mills are equipped with self-diffluent classification system; product fineness: ≥2500 mesh.
3. Suitable for milling materials with a wide range of size: ≤50mm.
4. Wear-resistance: the wearing parts of our impact mills are made of wear-resistance composite materials, which feature long service life and have no pollution to materials while the Mohs hardness of the material is lower than 5.
5. Stable mechanical performance: our superfine impact crusher can work continuous for 24 hours without stop.
6. Complete functions:
(1) suitable for crushing spiculate materials and produced product L/D could be 15:1.
(2) No temperature rise during milling process, as a result the superfine grinding mill is suitable for thermosensitive material crushing.
(3) Calcined material scattering is possible.
(4) Particle shaping function is available and can help improve bulk density.
(5) Our superfine impact mill is also suitable for grinding fibre texture materials.
(6) Equipped with material drying function, as a result, the impact mill is also suitable for grinding materials with high water content.
(7) Suitable for grinding high viscosity materials.
7. No dust pollution for negative pressure production.
8. High automation, simple operation and stable performance.

Working Principle of Superfine Grinding Mill

Our superfine impact mills have similar working principles to our superfine ball mill production lines and jet mills:
1. After roughly crushed, materials are fed into milling chamber;
2. Milling: when the chamber is rotating at high speed, the great impact force generated between materials and rotary parts helps realize superfine grinding.
3. Classification for coarse and fine powders;
4. Qualified powders will be collected by cyclonic collectors and unqualified powders will be ground for the second time. Filtered air will be discharged by induced draft fans.

Main Technical Parameter of Superfine Grinding Mill








Rotor diameter(mm)







Main shaft rotation rate







Fineness um


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