Limestone is a solid waste obtained from the treatment of phosphate ore with sulfuric acid when phosphoric acid is produced by fine grinding with phosphate ore and other ore raw materials. The main component of this solid waste is calcium sulfate.

Apart from calcium sulfate, limestone also contains many other substances, such as apatite, phosphorus pentoxide eutectic, fluoride, sulfate and so on. These materials can be used for industrial purposes. Therefore, according to industrial needs, suitable grinding machine or ultrafine grinding mill can be selected for grinding processing, which can be used in arch industrial production.

After grinding to 3400 mesh size by ultrafine grinding mill, and then processing, it can be used in industrial production. According to the summary, the main industrial applications of ground limestone powder are as follows: using limestone to produce sulphuric acid cement, which uses sulfur element in limestone to produce cement, while other components are used for cement clinker. The cement buffer can be produced by mixing limestone powder and dihydrate gypsum in a certain proportion.

Limestone powder is proportionally mixed with cement, fiber reinforced material and pulp, which can be used to make limestone fiberboard. In addition, limestone mixed with other raw materials can also produce crystal glass materials, gypsum bricks and so on. Finally, because limestone contains abundant calcium and sulfur elements, it can be processed by ultrafine grinding mill to produce ammonium sulfate, potassium sulfate, calcium sulfate, and other products.