powder surface modification machine of pyrophyllite

Surface modification of mineral powder is an inevitable product of the development of modern high technology and new materials. It is widely used in non-metallic mineral fillers or pigments (such as plastics, rubber, adhesives, etc.), modern polymer materials, polymer-based composite materials, functional materials and coatings.

After modification, mineral powder can significantly improve the compatibility between inorganic mineral fillers and organic polymers, improve the interfacial bonding force, enhance the mechanical strength and comprehensive performance of the material, and at the same time greatly increase the filling amount of powder fillers, reduce production costs, and give the product some special physical and chemical properties.

However, most common non-metallic mineral materials have different interfacial properties with organic polymer matrices, poor compatibility, and direct or large-scale filling will lead to a decrease in the mechanical properties of the material. Therefore, it is very important to modify the surface of inorganic mineral fillers.

China mineral powder surface modification technology is still in its infancy. Most of the existing equipment is borrowed from rubber, plastics and other industries, and there are problems such as intermittent operation, uneven coating, low activation index, small processing volume, and harsh operating environment. To solve these problems, the former Beijing Graduate School of Wuhan University of Technology developed the SLG type continuous powder surface modification unit for powder surface modification, film formation and spheroidization. The equipment has been verified by dozens of domestic enterprises and has excellent operating performance, which can significantly improve economic and social benefits and has broad development prospects.

Continuous production: It can run continuously and has a large processing capacity, which is suitable for industrial production of various scales.

Efficient modification: The utilization rate of the modified agent is high, the dosage is small, the powder coating rate and activation index are high, and the energy consumption is low.

Versatility: It has both modification and disintegration functions, which is suitable for materials of various finenesses, and has a unique modification and activation effect on materials with low pseudo-specific gravity and large bulk density ratio (such as white carbon black, mica powder, talcum powder, etc.).

High-speed mixing: The powder and the agent are mixed in a high-speed gas-solid phase vortex, with high modification efficiency, and basically do not destroy the original particle shape of the powder.

Environmental protection and low consumption: the material runs under negative pressure, the sealing is good, the dust does not leak, there is basically no pollution, the operating environment is good, and the labor intensity is low.

Working principle of powder surface modification machine

When the mechanical force of the modifier is very strong, if the critical time for crack formation is shorter than the mechanical action time, or the particle size is smaller than the critical size, no crack will be generated, but plastic deformation and defect accumulation will occur, that is, the mechanical activation process. Due to factors such as inter-particle slip, elastic deformation and surface lattice defects, the stress of the powder is relieved and the fragmentation effect is reduced.

Performance of powder surface modifier

Continuous and efficient: It can run production continuously, with a large processing volume, and is suitable for industrial production.

High utilization rate of reagents: small amount of modified reagents, high coverage and activation index, and low energy consumption.

Multifunctional application: It has both modification and disintegration functions, suitable for materials of different fineness, especially for white carbon black, mica powder, talcum powder, etc. It has a unique modification effect.

High-speed mixing: gas-solid vortex mixing, high modification efficiency, and no damage to the original particle shape of the powder.

Environmental protection and energy saving: negative pressure operation, good sealing, no dust leakage, and excellent operating environment.

Integrated design: hot and cold machine completed, no need for separate heating and cooling system, simplifying operation.

Accurate dosing: independent fluid/non-fluid dosing system to ensure continuous, stable and uniform modification.

Material: pyrophyllite | Output: 3t/h
Configuration: spiral feeder, modifier, silo

Features:

The pyrophyllite powder coating modification unit adopts three finished product shaped modification cylinders. The dry powder and the precisely measured reagent enter the modification cylinder at the same time, and the fluidized spiral runs with the high-speed rotation of the rotor. The powder is quickly modified into a film through collision, friction, shearing and rotor heat.

Advantages:

Continuous production, large processing capacity, suitable for industrialization.

The amount of coating material is small and the coating rate is high.

Continuous or intermittent production process can be selected.

Modification additives can be stearic acid or coupling agents (titanate, aluminate, phosphate, etc.).

Provide personalized surface treatment solutions.