20,000 TPY Calcite Grinding Production Line in Hunan

Project Overview

A new materials company in Hunan Province built a new 20,000-tpy high-purity calcite powder production line. After extensive site investigations and technical demonstrations, it finally adopted the technical solution of two parallel GK1280 Raymond Mills from Guilin Mining Machinery. The project successfully processes calcite raw materials into high-quality 325-mesh (D90) powder with an output of up to 10 t/h. The system runs stably and meets environmental protection standards.

Project Details

Calcite raw materials stored in the hopper are fed continuously, uniformly and quantitatively into the two GK1280 Raymond Mills for grinding and crushing by an electromagnetic vibrating feeder. The ground calcite powder enters the classifier along with airflow. A closed-circuit circulation is formed under the action of the classifier impeller. Coarse calcite powder failing to meet the 325-mesh fineness requirement is separated and falls back to the grinding chamber for re-grinding.

Qualified fine calcite powder is then pneumatically conveyed through air slides to the cyclone powder collector with the airflow. The whole process is fully sealed without dust leakage. The cyclone powder collector separates and collects most fine calcite powder by centrifugal force. The pulse dust collector recovers ultrafine calcite powder and treats residual dust. The collected finished calcite powder is transported by elevator to the packaging machine for finished product packaging.

Project Advantages

High Efficiency & Flexibility: Adopting two GK1280 Raymond Mills in parallel configuration, the system features flexible output adjustment to achieve the annual production target of 20,000 tons.

Economical & Reliable: The core grinding components are made of high wear-resistant materials with long service life. The parallel design facilitates maintenance of a single unit without interrupting overall continuous production.

Eco-friendly & Clean: The whole process from grinding, conveying, collection to packaging adopts a fully sealed design. The production site stays clean, and exhaust emissions are far below national standards.

Uniform Particle Size: The finished calcite powder has stable fineness (325 mesh, D90) and uniform particle size distribution, fully satisfying the quality requirements for fillers in downstream high-end application fields.