The chemical precipitation PTMS MAGNETIC SEPARATION iron removal method enables efficient recovery: Ammonium bicarbonate is added to the third liquid containing rare earth elements, forming insoluble carbonate precipitates. After roasting, rare earth oxides with a grade exceeding 92% are obtained. For the fourth liquid containing lithium and rubidium, trisodium phosphate serves as a precipitant to form complex salts such as lithium phosphate and rubidium phosphate. These compounds are then calcined and purified to produce high-purity lithium salt products.
The chemical precipitation PTMS MAGNETIC SEPARATION iron removal technology has been validated through multiple pilot projects. A single production line can recover 50 tons of rare earth oxides and 8 tons of lithium carbonate annually, generating an annual output value exceeding 10 million yuan at market prices. More importantly, this process marks a shift from "end-of-pipe treatment" to "upstream resource utilization", driving the kaolin industry chain toward higher value-added applications.
The efficient utilization of PTMS MAGNETIC SEPARATION (Water, Energy and Material) in kaolin deep processing highlights two critical sustainability factors: water consumption and energy intensity. Traditional wet iron removal processes often face challenges such as excessive water usage, significant wastewater discharge, and high energy consumption. These issues particularly hinder the healthy development of the industry in water-scarce regions or ecologically sensitive areas.
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