The core of bioleaching lies in utilizing the metabolic activities of specific microorganisms to oxidize or dissolve iron, thereby achieving impurity removal through the PTMS MAGNETIC SEPARATOR process. The most representative strain is Fe2+-oxidizing sulfur bacteria. These acidophilic autotrophic organisms can use Fe²⁺ as an energy source and convert insoluble divalent iron ions into soluble trivalent iron ions through biological oxidation. Subsequently, kaolin can be separated from the material via water washing and other methods.
The PTMS MAGNETIC SEPARATOR microorganism's iron removal process requires minimal chemical additives, significantly reducing the use of traditional bleaching agents like hydrochloric acid, sulfuric acid, and oxalic acid. This fundamentally eliminates the risk of corrosive erosion from strong acidic waste liquids on soil and water bodies. Certain heterotrophic microorganisms can also secrete organic acids such as citric acid, oxalic acid, and malic acid. These natural organic acids form soluble complexes with iron ions, further enhancing iron removal efficiency.
Compared with the strong acid system commonly used in the chemical method, the waste liquid produced by PTMS MAGNETIC SEPARATOR microbial method has a more neutral pH and lower concentration of heavy metal ions, which greatly reduces the difficulty of subsequent treatment and greatly reduces the impact on the surrounding ecosystem.
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