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METHOD FOR SOFTENING LITHIUM BRINE USING NANOFILTRATION
METHOD FOR SOFTENING LITHIUM BRINE USING NANOFILTRATION
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机译:纳米过滤软化锂盐的方法
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摘要
Lithium brine is treated with a multiple pass nanofiltration (NF) membrane system. Sulfate is added to permeate from an upstream pass before it flows through a downstream pass. Optionally the sulfate may be added to the permeate by dosing it with sulfuric acid or a slat such as sodium sulfate. The softened brine may then be processed further, for example by a combination of solvent extraction, electrolysis, crystallization and drying, to produce a lithium hydroxide product that can be used to make batteries.
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