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The removal of thin film iron or impregnated iron from the surface of quartz sand particles by microbe is a newly developed PTMS magnetic separation technology, which is currently in the research stage of laboratory and small scale experiments. According to the test results, the microorganisms such as Aspergillus Niger, penicillium and pyriformis have obtained good results when leaching iron oxide on the quartz surface.

PTMS magnetic separation

 
It was also found that the effect of leaching iron with pre-cultivated culture medium of bacteria and mold was better than that of PTMS magnetic separation. Anaerobic species decompose iron at a slower rate than aerobic species. The sensitivity of bacterial leaching varies among iron oxide minerals, with iron dissolved from limonite slower than from goethite, but much faster than from hematite.

what is magnetic bead separation？

 
Ultrasonic PTMS magnetic separation iron removal is suitable for production enterprises with high product purity and low consumption. Acid leaching method for iron removal is costly and complicated, but high purity quartz sand can be obtained by acid leaching method, which is suitable for the industry of high purity quartz sand products. Microbial iron removal technology is not perfect, is still in the experimental stage.
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