Quartz sand and other impurity minerals can be dissolved by acid solution so that PTMS magnetic separator can be further purified
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Acid leaching is to make use of quartz insoluble in acid (except HF), other impurities can be dissolved by acid solution, so as to achieve further purification of quartz by PTMS magnetic separator. Acid leaching commonly used acids such as sulfuric acid, hydrochloric acid, nitric acid and hydrofluoric acid, reducing agents such as sulfite and its salts. It has been found that the above acids have good removal effect on non-metallic impurity minerals in quartz.
PTMS magnetic separation
However, for different metal impurities, the type and concentration of acids have significant effects. It is generally believed that all dilute acids have significant effects on the removal of Fe and Al, while for the removal effect of Ti and Cr, concentrated sulfuric acid, aqua regia or HF are used for acid leaching. A mixture of these acids is usually used for acid leaching of impurity minerals. PTMS magnetic separator
what is magnetic separation method for concentration of ore?
Considering the dissolution effect of HF on quartz, HF concentration is generally not more than 10%. In addition to acid concentration, acid dosage, leaching time, temperature and pulp stirring can affect the effect of quartz leaching. The control of various factors of acid leaching should be based on the final grade requirements of quartz, to minimize the concentration of acid, temperature and dosage, reduce the acid leaching time, in order to achieve the purification of PTMS magnetic separator quartz at a lower dressing cost.
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