PIN MILL Brief Introduction

 Learning from German coating technology, combined with our own actual experience in powder production,our company independently researched and developed this pin mill for the processing of hard materials and surface coating of the powder. The main unit consists of two discs with a pin-shaped rotor. The disc is composed of motor, belt, main shaft, bearing,rotor, etc. The rotor rotates at a high speed in the disc, so the material can be fully dispersed and depolymerized, and mixed with the additives to obtain a highly uniform effect of coating and modification. The production capacity of this equipment is about 1 t/h to 5 t/h, the coverage rate of powder can reach 99%, the energy consumption in per unit product is low, and the added value of powder products is high.

PIN MILL Usages

The equipment can be used for dry surface modification of ultafine powder in various non-metallic minerals, battery materials, food and medicine fields, such as light calcium carbonate, ground calcium carbonate, ultrafine and precipitated barium sulfate, graphite powder, washed kaolin, calcined coal kaolin, talcum, quartz powder, mica, white carbon black, titanium dioxide, sericite and other materials, while at the same time it can depolymerize and scatter the powder. It has a wide range of applications and realizes energy saving and environmental protection.

PIN MILL Working principle

In order to achieve the surface modification and coating of powder, the mill will spray the surface modifying additives measured by the temperature-controlled dosing system into the feeding material accurately. In the atomization chamber, the modifying additives come out from a special atomizing nozzle and spray on the dry materials, then mixed in this atomization chamber. If a solid modifying additives is used, the additives will be heated and melted to a liquid state in the temperature-controlled dosing system.The following is the detailed process of the surface modification and coating of powder. First, the modifying additives and the modified powder materials enter the atomization chamber for mixing, and then enter the nail disc automatically and continuously, which is impacted by the airflow in different directions inside the mill. The high-speed rotating rotor allows the specially designed nail disc to form a two-phase swirling to allow materials and modifying additives to be fully dispersed. Second, relying on the heat generated by the high-speed rotation of the rotor and the impact, shear and friction of the powder. The powder and the modifying additives quickly heat up in the disc to reach the temperature required for the modification, and then they can be fully contacted and mixed. So the modifying additives can act quickly and evenly on the surface of the powder particles, coat the surface of the particles and complete the surface modification of the powder. Finally, the modified powder product enters the backend air classifier system for sorting, and the qualified fine powder will be selected to the cyclone for cooling and collection. The whole system has no dust pollution and is easy to operate; the amount of modifying additives used in per unit product is low, theenergy consumption in per unit product is low, and the coating rate is high; no additional powder heating device is required, and the temperature in the cavity can be adjusted as needed. Modified products do not agglomerate, and have strong disintegration and deagglomeration for ultrafine powders, especially suitable for surface modification of ultrafine powders; not only can realize the composite modification of more than two modifying additives and powders, the machine can also form a production line with a dry mill to achieve an integrated grinding and modification process. 

PIN MILL Technical advantages

1. This pin mill can continuously and stably produce with a high degree of automation, suitable for all scales of industrial production.

2. High utilization rate of coating agents and small consumption of agents used for coating the GCC powder. The dosage of additives is only 0.5% to 0.8%.

3. The coating rate of the powder is high, which can reach 99%, and energy consumption is low.

4. Independently controlled driver of pin disc can control its speed and direction of rotation, effectively improving the secondary agglomeration problem after powder modification.

5. The added value of the coated product is high, which brings more lucrative profits and shortens the time of cost recovery for the enterprise.

6. Adopting unique atomizing nozzle design and vortex mixing operation mode, the material and additives have a long action time and high modification efficiency.

7. The whole system is working under negative pressure with good sealing. No leak of the powder, clean production environment, no dust pollution.

8. Central control system of artificial intelligence, PLC control, flash real-time display, easy to operate.

9. Can realize online diagnosis of equipment problems and remote monitoring, and timely treatment of equipment failures.