What is the production process of ultrafine talc powder?

Talc is a common silicate mineral that is very soft and has a slippery feel. It often appears as mineral artifacts such as olivine, enstatite, hornblende, and tremolite, and is relatively cheap. After ultra-fine grinding, it has special physical and chemical properties, and the return on investment is constantly increasing.

Talc has a Mohs hardness of 1 and is naturally crumbly and grindable. Ultra-fine talc powder production process: finely ground and ultra-finely ground talc has become a benchmark for measuring the quality of talc powder products. Based on the characteristics of the material, the main equipment is generally an ultra-fine vertical grinding mill.

As the host equipment of the grinding production line, it has a three-dimensional structure, a small footprint, and strong completeness. It forms an independent production system from lump materials to finished powder. It has a high degree of automation. The finished fine powder has good quality, uniformity, and high sorting accuracy, the screening rate is higher, and the fineness can be adjusted according to needs (3-45μm is adjustable).

Raw material warehouse → Bucket elevator → Jaw crusher → Ultra-fine vertical grinding mill → Electromagnetic vibrating feeder → Analytical machine → Powder collector → Pipeline device → Dust collector → Power distribution cabinet → Finished product warehouse, etc.

[Crushing system]: Talc needs to be pre-crushed to within 40mm, first coarsely screened and then crushed again. Some talc manufacturers do not screen before coarse crushing, so that smaller particles that meet the requirements are combined with large pieces of talc. Directly entering the crusher, the small pieces of raw coke undergo another crushing, making the raw materials finer.

[Grinding system]: The material is fed into the ultra-fine vertical grinding mill for grinding, and the finished product passes through the powder selector, enters the cyclone powder collector and pulse dust collector for collection, and is fed into the blower from the lower discharge port;

[Finished product conveying system]: A pneumatic conveying system is installed at the outlet of the blower to transport the finished product to the finished product warehouse, and the excess gas is filtered by the dust collector on the top of the warehouse;

[Dust removal system]: The entire system is equipped with a pulse dust collector, and air exhaust ports are installed at all dust raising points to ensure that the entire system has no dust leakage and realizes dust-free operations on site.

[Control system]: This system is equipped with an intelligent PLC control cabinet and a host computer, which can start, stop, monitor, and interlock linkage functions for all equipment in the entire system, and reserves a DNS interface to achieve remote control.

Ultrafine talc powder is used in the plastics industry as a reinforcing filler for polypropylene. In the modified system of polypropylene, adding ultrafine talc can not only significantly improve the rigidity, surface hardness, heat creep resistance, electrical insulation, and dimensional stability of polypropylene products, but also improve the impact of polypropylene strength.

Ultrafine talc powder is used in the polyethylene resin industry. Polyethylene filled with it can be used as engineering plastics. It has good chemical resistance and fluidity and can compete with ABS, nylon, and polycarbonate.

Ultra-fine talc powder is used in the ABS resin industry. Adding ultrafine talc can significantly improve the original performance of ABS and reduce costs. Therefore, it is often used to injection mold the casings of various instruments, televisions, radios, mobile phones, etc.

Ultra-fine talc powder is used in the preparation industry. Used as a dispersant for volatile oils, it can significantly improve patients’ medication compliance. The powder coating layer can not only eliminate edges and corners to facilitate coating, but also improve the stability of sugar-coated tablets. Used as a lubricant to reduce friction between drug powders and improve the fluidity of drug powders, etc.

Ultrafine talc powder is used in the papermaking industry. The addition of ultrafine talc in the papermaking industry helps to increase filler retention and improve paper transparency, smoothness and printability, and makes the paper more ink absorbent.

Ultra-fine talc powder is used in the cosmetics industry. Ultrafine talc is a high-quality filler in the cosmetics industry. Due to its high silicon content, it has the effect of blocking infrared rays and enhances the sun protection and anti-infrared ray properties of cosmetics.

Ultra-fine talc powder is used in the ceramic industry. Make ceramics appear in different colors.

Ultra-fine talc powder is used in the textile industry. Used as filler and bleaching agent, such as waterproof cloth, fireproof cloth, wheat flour bag, rope nylon, etc., which can enhance the density of the fabric and enhance the heat resistance, acid and alkali resistance.