What Is Mineral Processing?
Ore dressing is based on the physical and chemical properties of different minerals in the ore. After the ore is crushed and ground, gravity separation, flotation, magnetic separation, and electrical separation are used to separate useful minerals from gangue minerals and make them Various symbiotic (associated) useful minerals are separated from each other as much as possible, removing or reducing harmful impurities to obtain raw materials required for smelting or other industries.
- Ore dressing is the most important link in the entire production process of mineral products, and it is a key department in mining enterprises. Generally, large-scale mining enterprises are resource-based enterprises with comprehensive mining, dressing and smelting. Physical or chemical methods
- The significance of beneficiation can be analyzed from the following three aspects: From the technical aspect, the development of science and technology and industry has increasingly higher requirements for the quality of mineral raw materials. Direct mining of raw ore often fails to meet the standards, and
- The early beneficiation was based on the difference between the physical properties of the minerals or the physical and chemical properties of the surface, but did not change the chemical composition of the mineral. Later it was extended to the selection of non-metallic mineral raw materials, called "mineral separation." Later, the process of using chemical methods to recover useful ingredients in mineral raw materials was also included in the beneficiation, called
- 1867 by PRvon Rit-tinger,
- The ore beneficiation process is
- In order to select useful minerals from the ore, the ore must first be crushed to dissociate the useful minerals and monomers when purchased. Sometimes in order to meet the requirements of the material size of subsequent operations, a certain crushing operation is also required in the middle. Pre-selection preparation is usually carried out in two stages: crushing and screening operations and mineral classification operations. The crusher and the screener are mostly combined operations, and the mill and classifier often form a closed circuit. They are the main machinery and equipment that make up the crushing plant and the grinding plant. [3]
- The mineral raw materials enter the sorting operation after the crushing operation, so that
- Most beneficiation products contain a large amount of water, which is very disadvantageous for transportation and smelting. Therefore, before smelting, the water in the beneficiation product needs to be removed. The dehydration operation is usually carried out in the following stages:
- 1) Concentration Concentration is the operation that causes the solid particles in the beneficiation product to precipitate under the action of gravity or centrifugal force.