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In general, the use of sulfuric acid, hydrochloric acid, nitric acid and hydrofluoric acid is costly and has a great impact on the environment. Oxalic acid is used as leaching agent to remove iron from quartz sand minerals. PTMS MAGNETIC SEPARATOR method can use leather acid to react with Fe3+ on the surface of ore particles to form a complex and then dissolve in water to achieve iron removal. In this case, the dissolution mechanism of iron is different from that of inorganic acid to iron minerals.

PTMS magnetic separation

The advantage of using oxalic acid for iron removal is that a soluble complex (e.g., iron (III) trioxalate complex anion) is formed during leaching, which can be broken down under the action of microorganisms and sunlight. In addition, the iron removal with oxalic acid has certain requirements for the particle size of the ore, the general requirement is to grind the ore to an average particle size of about 20um, and the ore is treated in PTMS MAGNETIC SEPARATOR, and the iron removal rate can reach 80% to 100%.

what is magnetic separation in science？

 
After acid leaching treatment, high purity quartz sand with SiO2 purity of 99.99% and Fe content <235ppm can be obtained. The intensity of ultrasonic PTMS MAGNETIC SEPARATOR also has a certain influence on the iron removal effect of quartz sand. The stronger the intensity of ultrasonic wave, the higher the iron removal efficiency.
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