This article introduces six methods of quartz sand purification. Before introducing the methods, let's first understand the composition and main uses of quartz sand.
The main chemical component of quartz sand is SiO2, accompanied by a small amount or trace impurities. The main components of impurities are Al2O3, Fe2O3, MgO, CaO, etc. The quartz sand purification we want to do is to remove impurities and finally obtain refined quartz sand or high-purity quartz sand.
Quartz sand is often used as mineral raw material in modern industry, and widely used industries include glass, smelting, ceramics and refractory materials, filter materials, chemical machinery, electronic industry, etc. More and more high-tech electronic industries, optical fiber communications and other industries are growing, which will gradually increase the demand for the use of quartz sand.
At present, the treatment methods of quartz sand purification at home and abroad mainly include water washing, grading desliming, scrubbing, magnetic separation, flotation, acid leaching, microbial leaching, etc.
However, in many cases, due to the different amount and types of impurities contained in quartz sand, a single method may not be able to achieve the purpose of purification, so we provide you with six combined methods.
1. Grinding classification+magnetic separation
Crush the raw ore to - 30mm, control the particle size to -0.71mm after grinding and classification, conduct secondary magnetic separation by magnetic separator, and conduct hydraulic classification by hydrocyclone to obtain quartz sand concentrate and tailings.
2. Grinding classification+magnetic separation+flotation
After crushing, grinding and grading, the raw ore is subject to a stage of magnetic separation. The pulp with iron impurities removed enters the flotation machine for flotation. Finally, other impurities are removed to obtain quartz sand concentrate.
3. Roasting water quenching+magnetic separation+acid leaching+flotation
The raw ore is crushed, screened and classified after roasting, water quenching and manual sorting, and then floatated to obtain quartz sand concentrate after one week of magnetic separation and acid leaching.
4. Scrubbing classification+grinding classification+magnetic separation+reverse flotation
5. Roasting water quenching+magnetic separation+flotation+acid leaching
6. Ultrafine crushing+classification+flotation+microwave acid leaching
The selection of the six quartz sand purification methods depends on the SIO2 grade of the raw ore and the type and grade of impurities.
No matter which method is used for quartz sand purification, some mineral processing equipment is indispensable, such as jaw crusher, quartz sand ball mill, magnetic separator, flotation machine and classifier. Xinhai Mineral Equipment Co., Ltd. can provide you with complete sets of production lines and equipment for quartz sand purification. If necessary, please contact customer service.
