Quartz sand is a raw silicate material obtained after crushing and purification. Due to its high hardness, wear resistance and stable chemical properties, quartz sand is often used in ceramics, glass, casting, construction, chemical industry, abrasives and other fields. Natural quartz sand will contain various impurities and can only be used after being purified by a certain process. Since the nature of quartz ore is very complex, what equipment will be used when processing quartz ore?
After the quartz ore is mined, it needs to be crushed to a certain particle size using a crushing process to meet the subsequent sand making or scrubbing feeding requirements. Quartz sand crushing equipment usually includes jaw crushers, cone crushers and so on.
In addition, in order to ensure that the particle size of the crushed product meets the production requirements, a circular vibrating screen is usually used after the last crusher to form a closed loop. After the quartz sand is crushed to a certain particle size, it is necessary to use a sand making machine to further process it into quartz sand to meet the use requirements.
Quartz sand usually has a thin film layer formed by impurity elements on its surface. Conventional water washing can no longer remove it. In mineral processing production, rod mills and mechanical scrubbing methods are often used to purify quartz sand. Rod mills use the mutual friction between quartz sand and steel rods to remove the impurity layer on the surface, while mechanical scrubbing uses a stirring device to make the quartz sand have higher kinetic energy and use the friction between quartz particles to remove impurities.
Since quartz will introduce various harmful impurities during the formation process, among which industrial use has very high requirements for iron elements in quartz sand, magnetic separators are the main equipment in quartz sand mineral processing equipment, which are used to remove magnetic minerals in quartz sand. Flotation machines are commonly used processes in quartz sand purification. The stirring of the impeller not only keeps the mineral particles suspended, but also makes the slurry mixed evenly. The difference in hydrophobicity between minerals is used to make hydrophobic impurities adsorbed on the surface of bubbles and separated.
For quartz sand with very high purity requirements, the purity of the flotation product can no longer meet the requirements. Generally, after flotation, acid leaching is required for further purification. Acid leaching is generally carried out in a leaching stirring tank. After acid leaching, water washing is performed to remove various ions on the surface of the quartz.
After washing the quartz sand, the liquid needs to be removed. This can be done using hydrocyclones, concentrators, filters and other equipment. The specific equipment selection depends on the process. Then comes the final drying stage. Single-drum dryers, three-drum dryers, etc. can be used.
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