How does a limestone grinding mill work?

1. Limestone Concept

Calcium carbonate is a compound that is a common substance on Earth and can be found in rocks. The main component of animal back shells and snail shells. It occurs in nature as two minerals: calcite and aragonite. Limestone can be directly processed into stone and fired into quicklime. Lime includes quicklime and hydrated lime. The main component of quicklime is calcium oxide, which is generally in the form of lumps, white when pure, and light gray or yellow when it contains impurities. Quicklime absorbs moisture or adds water to become hydrated lime.

2. Application of limestone powder

Limestone powder is mainly used as cement mixture and concrete admixture because the main component of limestone is calcium carbonate. Calcium carbonate is a compound that is a common substance on Earth and can be found in rocks. Limestone is the trade name for limestone as a mineral raw material. Limestone has been widely used in the history of human civilization because of its wide distribution in nature and easy access. As an important building material, it has a long history of mining. In modern industry, limestone is the main raw material for manufacturing cement, lime, and calcium carbide. It is an indispensable flux limestone in the metallurgical industry. After ultra-fine grinding, high-quality limestone is widely used It is used in the manufacturing of paper, rubber, paint, coating, medicine, cosmetics, feed, sealing, bonding, polishing and other products. According to incomplete statistics, the ratio of limestone consumed in cement production to the sum of building stones, lime production, metallurgical fluxes, and ultrafine calcium carbonate is 1:3.

3. Limestone powder making process

The first stage:The crushed large pieces of limestone are transported to the raw material warehouse by special vehicles, and then the materials are sent to the jaw crusher by forklift/manual for crushing until they are smaller than the feed size of the grinding mill.

The second stage:The limestone crushed by the crusher is lifted by the elevator to the storage hopper. The material is discharged from the storage hopper and then the feeder evenly feeds the host machine.

The third phase:During the grinding and grinding process, qualified products are screened by the screening system and then enter the collector through the pipeline. After collection, they are discharged through the discharge valve to become the finished product. Unqualified products fall into the main machine and are re-ground.

The fourth stage:The purified airflow of the finished product flows into the blower through the residual air duct above the dust collector. The air path is circular. Except for the positive pressure from the blower to the grinding chamber, the airflow in the other pipelines flows under negative pressure. The indoor sanitary conditions are good.