5 Acid leaching. Acid leaching is the use of quartz insoluble in acid except HF , other impurity minerals can be dissolved by acid, further purifi ion of quartz. Acids commonly used for acid leaching include sulfuric acid, hydrochloric acid, nitric acid and hydrofluoric acid; and reducing agents include sulfurous acid and salts thereof.
4. Acid leaching method If the finished quartz sand is reddish, and the iron and titanium content does not meet the product quality requirements, the acid leaching method can be used. Wash the quartz sand with water to remove powder and impurities, then carry out acid leaching before drying it.
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Chapter 82 - Metal Processing and Metal Working Industry. The design and placement of the process equipment should allow easy access for . The ground under the leach pads is lined with an acid-proof, impermeable plastic Tailings containing waste minerals such as limestone and quartz mainly of lead concentrate in the form of lead sulphide is fed into a sintering machine.get price
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