Industrial-Scale Diatomite Powder Production Methods

The production of diatomite powder begins with the mining of diatomite ore. There are two main mining methods: open - pit mining, which is suitable for large - scale, low - grade, and shallow - buried deposits, and underground mining, used for smaller, deeper - buried, or high - value - containing deposits underground.

 

Once the ore is mined, it undergoes a series of processing steps. First, the raw diatomite ore is crushed. This is usually done using crushers like jaw crushers to break down the large - sized ore into smaller pieces. Then, the crushed ore is screened to separate different particle - size fractions.

 

After that, the key step of purification takes place. For low - grade ores, wet - separation methods such as using hydrocyclones are often employed to remove denser gangue impurities. High - grade ores may use dry - separation methods with air separators to get rid of unwanted materials. Chemical purification methods can also be used, for example, adding sulfuric acid, hydrochloric acid, and auxiliary agents to the pulp to remove impurities like iron and aluminum.

 

Finally, the purified diatomite is ground into powder. Grinding equipment like Raymond mills or ball mills are used to ensure that the diatomite reaches the desired fineness and particle - size distribution for various applications.