Lithium aluminate heat integrated extraction method

• Main Authors: HUANG YUANLING, ZHANG ZHOUWEI, JIN XIUQI, YANG GUOBIN, KUANG YUNSUO, DENG QIANG, ZHANG WENXING
• Format: Patent
• Language: Chinese; English
• Published: 15.08.2023
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to the technical field of ore lithium extraction, in particular to a lithium aluminate heat integrated extraction method. According to the lithium aluminate heat integrated extraction method, lithium carbonate, aluminum oxide, potassium sulfate and sulfuric acid products can be obtained at the same time, potassium sulfate can serve as a raw material to prepare potassium alum, obtained sulfuric acid can be used for roasting lithium-containing materials, and the dosage of concentrated sulfuric acid and potassium sulfate is remarkably reduced. The content of lithium ions in the liquid I can be increased through cyclic leaching, and the concentration cost is reduced. Waste heat generated by roasting can be used for concentration, dissolution of potassium sulfate and dissolution of crude potassium alum, waste heat generated by calcination of the potassium alum can be used for roasting lithium-containing materials, full utilization of the waste heat is achieved, and energy consumption of extra