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Advantages and disadvantages of different mica processing methods

Mica is the collective name of the mica group of minerals, which are aluminosilicates of metals such as potassium, magnesium, iron, and lithium. Natural mica minerals mainly include biotite, phlogopite, muscovite, lepidolite, sericite, green mica, iron lithium Mica, etc., the most widely used in industry are muscovite, sericite, phlogopite and lepidolite.

Mica stone

Mica application areas

Muscovite is characterized by hard texture, high mechanical strength, high temperature resistance, and rapid temperature change resistance; in addition, mica has good splitting properties (flakes along the dissociation surface), elasticity and flexibility, so it is widely used in industry. Wide range of applications. Phlogopite has high heat resistance and is a good heat-resistant insulating material.

Sheet mica is generally used for tube feeding sheets and punched parts in the radio industry, parts specification sheets and capacitor chips for the aviation industry and capacitor production departments, mica flakes for motor manufacturing, household electrical appliances, telephones, lighting, etc. Various specifications.

Fragment mica refers to the general term for the mined fine mica, the waste residue after processing and peeling, and the leftovers after parts processing. Mainly used in the production of various mica paper, mica board, as insulating materials, widely used in the electrical industry; production of various mica powder, used in engineering plastics and rubber, coatings, linoleum and other roofing materials, cable wrapping, welding rod, Mica ceramics, pearlescent mica pigments, mica casting products, etc.

Mica uses

Comparison of advantages and disadvantages of three mica processing methods:

Ordinary mica is mainly processed into powder for use, and the processing technology is mainly divided into three types: dry method, wet method, and gas phase method.

Production process of dry mica powder

As the name suggests, dry method is to directly grind various mica into powder with a mica fine grinding machine.

Advantages of dry grinding:

1. The production process is simple, without excessive equipment and long production lines:

2. No need for water and heat, less energy demand:

3. Compared with the wet method, the price of the final product is low, and it is more cost-effective for some filler-grade products with low requirements:

4. The production efficiency is relatively higher than the wet method.

Disadvantages of dry grinding

1. The machining accuracy is low, and the produced powder has a poor diameter-thickness ratio (that is, the hand feel is relatively thick) and cannot be used in high-end applications;

2. Impurities contain high halo;

Production process of wet mica powder

The wet processing method of mica powder, as the name suggests, is to use water as the medium and grinding aid in the mill, finely grind in the mill, and then use sedimentation classification or centrifugal classification to carry out semi-finished products. Finely classify to obtain mica powder of target particle size.

The process is as follows: mica crushing-hydraulic crushing-primary screening-grinding-classification-liquid-solid separation-drying-packaging-finished product.

Advantages of wet grinding

1. The production process is fine, the final product has a narrow particle size distribution, a large diameter-to-thickness ratio, and a good feel and smoothness;

2. The product has been classified and removed more than twice, and the impurity content is extremely low;

Disadvantages of wet grinding

1. High dependence on energy;

2. Low production efficiency;

3. The product is expensive, and it is more used in high-end usage scenarios;

4. The production process is complex and is currently highly dependent on experience.

Gas-phase method mica powder production process

As the name suggests, the gas-phase processing method of mica powder uses compressed air as the medium, and completes pulverization and classification at one time in a professional jet mill to obtain mica powder with the target particle size.

Its flow process is: mica crushing-preliminary crushing-air jet mill-grinding-packaging-finished product.

Advantages of gas phase grinding:

1. High production efficiency;

2. Ultrafine mica powder can be produced directly;

3. Environmental protection is the best among the three products;

4. Narrow particle size distribution, suitable for use scenarios with high requirements for particle size distribution.

Disadvantages of gas phase milling

1. The equipment cost is high, and the later maintenance is complicated;

2. Unable to produce products with larger particle size;

The above three methods of grinding mica powder have their own advantages and disadvantages. The specific choice can be determined according to your beneficiation process and usage scenarios.

Shanghai Clirik Machinery Co.,Ltd. is a manufacturer of dry mica grinding and sorting machines. The dry mica grinding and sorting machines we produce include coarse powder millRaymond mills, ring roller mills, ultra-fine vertical mills, etc. , can process 30-3000 mesh mica powder.

mica powder grinding mills

Who we are?


Shanghai CLIRIK Machinery Co.,Ltd. has been committed to the field of ultra-fine powder grinding machines for 20 years.

CLIRIK has a first-class manufacturing base with standardized and intelligent production lines.

CLIRIK's professional R&D, sales, installation and after-sales teams have provided door-to-door services to more than 100 countries and regions.



Which models can be selected for processing ultra-fine powder making?


HGM grinding mill: 74-5 micron(200-2500 mesh); D97=5 micron

YGM Raymond mill: 613-33 micron(30-325 mesh); D90=30 micron

CLUM vertical roller mill: 20-5 micron(600-3000 mesh); D50=2 micron D97=4 micron


How to get the latest quotation?


You can leave a message online or contact CLIRIK directly:


WhatsApp: +8613512155195/+8613917147829 

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