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A quartz sand beneficiation process

2023-04-25 Xinhai (226)

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Quartz sand, also known as silica sand, is a non-metallic mineral raw material with a wide range of uses. In order to make the quartz sand more valuable, it is necessary to carry out beneficiation on the quartz sand. Here is a common quartz sand beneficiation process:

  1. Scrubbing and desliming: Scrubbing is to remove the thin film iron and clay impurities on the surface of quartz sand particles, while desliming is to remove the slime impurities in the quartz sand particles. The purpose of these two processes is to reduce the content of impurities in quartz sand and improve the purity.

  2. Magnetic separation: Magnetic separation is to use the difference in magnetic properties between quartz sand and magnetic minerals to separate magnetic minerals from quartz sand.

  3. Flotation: Flotation is to use the difference in surface properties between quartz sand and impurities (such as feldspar, mica, iron minerals, etc.) to achieve the separation of quartz sand and impurities. Flotation can improve the grade and quality of quartz sand.

  4. Acid leaching: Acid leaching is to use acid to dissolve impurities such as iron, aluminum and titanium in quartz sand, and then rinse with water to achieve the purpose of purification.

  5. Alkali leaching: Alkali leaching is to use alkali to remove impurities such as iron, aluminum and titanium in quartz sand, and then rinse with water to achieve the purpose of purification.

  6. Thermal processing: Thermal processing is to heat the quartz sand to a certain temperature, so that impurities such as iron and organic matter in the quartz sand can be removed.

The above are the common quartz sand beneficiation processes. The specific beneficiation process should be selected according to the nature of the quartz sand and the requirements of the product.


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