High iron containing indium leaching liquid extract indium with centrifugal extraction machine
in the use of indium extraction methods mainly include: precipitation, solvent extraction, liquid film method, replacement method, etc. Precipitation has an advantage of indium content higher than 0. Using precipitation, 5% of the solution to extract the product quality is relatively good, produce less waste water, procedure is simple, but the downside is that some elements of the standard electrode potential and indium close, in the case of debugging pH accuracy is not high to form a coprecipitation. And liquid membrane method and displacement method also has the corresponding faults. In actual industrial production at present, the solvent extraction method is the most commonly used method extracting indium, its advantage is low cost, simple operation, high efficiency.
zhengzhou days extracting r&d and production of new type centrifugal machine adopts high solvent extraction to extract iron containing indium leaching liquid of indium element effect is better. In the first place in the high iron containing indium leaching liquid indium element extraction, need to choose the suitable extractant, and then according to the equipment type selection of the mixed flux of material liquid, then according to the specific feeding system for the multistage continuous extraction device, indium element could obtain high extraction efficiency.
in the production process, the first high iron containing indium leaching liquid and extraction agent according to certain proportion respectively from two feeding tube into the drum and the mixing zone, formed between the shell of the rotating drum with, through the turbine disc and the impeller to make two phase mixing and dispersing quickly, two phase solution fully mass transfer, mixing and mass transfer process.
after mixing the mixture under the action of vortex disk into the drum, and the effects of the centrifugal force on the drum, the rapid separation. After clarification of two phase fluid end respectively through their weir plate into the collection chamber and the tube was closed to derivation, respectively, to complete the two phase separation process.
related extraction equipment figure:
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