facebook twitter LinkedIn

Physical and chemical methods of quartz sand purification

Using quartz sand purification technology to obtain high-purity silicon dioxide is an effective way to meet the demand of high-purity silicon in the high-tech field, which is of great significance to promote economic development. At present, the main methods of purifying quartz sand in sand washing plant can be divided into physical methods and chemical methods.
 sand washing plant
The main physical methods of quartz sand purification are washing, classification, desliming, scrubbing, magnetic separation, flotation and ultrasonic method etc.
sand washing plant
The main chemical methods of quartz sand purification are acid leaching and complexation.
The acid leaching method is based on the fact that quartz is insoluble in acid (except HF) and other impurity minerals can be dissolved in acid solution, thus further purification of quartz can be realized. The complexation method is to use quartz powder after acid leaching, the acid can form coordination compounds with impurity ions in the solution, so that the impurity ions in the solution can be further removed.
Both physical and chemical methods play an irreplaceable role in the whole process of quartz sand purification. In sand washing plant, physical methods such as  washing and classification, desliming, scrubbing, magnetic separation, flotation and ultrasonic method are often used to remove most impurities, and then chemical methods such as acid leaching and complexing are used to further remove trace impurities in quartz sand. But the acid used in chemical methods has serious pollution to the environment, which requires us to seek a new, pollution-free purification method. Combining with the professional knowledge of chemistry, physics, mechanochemistry and electromagnetic chemistry, the research on the purification technology of high purity quartz sand is an important development direction in the future. With the development of economy, the beneficiation and purification of quartz sand has very important economic and social benefits.
sand washing  plant
Especially with the development of microelectronics, optoelectronics and other industries, the excellent performance of high-purity quartz sand can not be replaced by other powders, and the market prospect is extremely great.

For more information about quartz sand extracting and purification, please visit SINONINE website:,or contact us directly by +86-18118821087 (WhatsApp).

Lasted news & technology

The flotation method provided by Sinonine can effectively remove feldspar in quartz sand, which is widely used in quartz sand washing plant and has achieved good results.


Sinonine high purity silica sand washing plant can work 7x24 hours to Meet the needs of customers in large production., +8618118821087


Raw sand go into silica sand washing plant to become high purity sand.


High-purity quartz powder has excellent optical, thermal, chemical stability and radiation resistance, so it has a wide range of applications in electronic industry, optical communications, military and other fields. With the development of electronic industry, optical communication, laser, optics a


sand washing plant for high purity sand


After drying by fluidized bed dryer system, the moisture content of silica sand can be less than 0.5%, and the moisture distribution is very uniform.


Most of the hydraulic graders in sand washing plants adopt the automatic control system, which has achieved good results.


The processing technology of high purity quartz sand washing plant usually includes complex processes such as calcination, water quenching, classification, magnetic separation, flotation, acid leaching, cleaning and chlorination roasting.

Contact us

Thank you for your interests in Sinonine, Please feel free to submit your inquiry information to us, our expert will contact with you as soon as possible.