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Method for recovering aluminum from lithium iron phosphate positive electrode material, obtained material and application
The invention provides a method for recycling aluminum from a lithium iron phosphate positive electrode material, the obtained material and application, and belongs to the technical field of waste battery material recycling. The method for recovering aluminum from the lithium iron phosphate positive electrode material comprises the following steps: (1) calcining the lithium iron phosphate positive electrode material to obtain a calcined product; (2) dissolving the obtained calcined product in a dissolving solution to obtain an aluminum-containing alkaline solution; and (3) mixing the obtained aluminum-containing alkaline solution, sodium hydroxide, sodium silicate, calcium nitrate and a polycarboxylic acid water reducing agent for reaction to obtain the calcium aluminosilicate/PCE nano composite material. The calcium aluminosilicate/PCE nano composite material and/or the calcium ferrosilicon acid/PCE composite material are/is added into ordinary Portland cement, the compressive strength of the cement can be remarkably improved, and the product can serve as an early strength agent to be applied to the cement concrete industry such as concrete prefabricated components.
本发明提供了从磷酸铁锂正极材料中回收铝的方法及所得材料和应用，属于废旧电池材料回收技术领域。本发明从磷酸铁锂正极材料中回收铝的方法，包含如下步骤：(1)将磷酸铁锂正极材料进行煅烧处理，得到煅烧产物；(2)对所得煅烧产物在溶解液中进行溶解处理，得到含铝碱性溶液；(3)将所得含铝碱性溶液、氢氧化钠、硅酸钠、硝酸钙、聚羧酸减水剂混合进行反应，得到硅铝酸钙/PCE纳米复合材料。本申请所得硅铝酸钙/PCE纳米复合材料和/或硅铁酸钙/PCE复合材料加入普通硅酸盐水泥中，可显著提高水泥的抗压强度，产品可作为早强剂应用于水泥混凝土行业，如混凝土预制构件等。
Method for recovering aluminum from lithium iron phosphate positive electrode material, obtained material and application
The invention provides a method for recycling aluminum from a lithium iron phosphate positive electrode material, the obtained material and application, and belongs to the technical field of waste battery material recycling. The method for recovering aluminum from the lithium iron phosphate positive electrode material comprises the following steps: (1) calcining the lithium iron phosphate positive electrode material to obtain a calcined product; (2) dissolving the obtained calcined product in a dissolving solution to obtain an aluminum-containing alkaline solution; and (3) mixing the obtained aluminum-containing alkaline solution, sodium hydroxide, sodium silicate, calcium nitrate and a polycarboxylic acid water reducing agent for reaction to obtain the calcium aluminosilicate/PCE nano composite material. The calcium aluminosilicate/PCE nano composite material and/or the calcium ferrosilicon acid/PCE composite material are/is added into ordinary Portland cement, the compressive strength of the cement can be remarkably improved, and the product can serve as an early strength agent to be applied to the cement concrete industry such as concrete prefabricated components.
本发明提供了从磷酸铁锂正极材料中回收铝的方法及所得材料和应用，属于废旧电池材料回收技术领域。本发明从磷酸铁锂正极材料中回收铝的方法，包含如下步骤：(1)将磷酸铁锂正极材料进行煅烧处理，得到煅烧产物；(2)对所得煅烧产物在溶解液中进行溶解处理，得到含铝碱性溶液；(3)将所得含铝碱性溶液、氢氧化钠、硅酸钠、硝酸钙、聚羧酸减水剂混合进行反应，得到硅铝酸钙/PCE纳米复合材料。本申请所得硅铝酸钙/PCE纳米复合材料和/或硅铁酸钙/PCE复合材料加入普通硅酸盐水泥中，可显著提高水泥的抗压强度，产品可作为早强剂应用于水泥混凝土行业，如混凝土预制构件等。
Method for recovering aluminum from lithium iron phosphate positive electrode material, obtained material and application
从磷酸铁锂正极材料中回收铝的方法及所得材料和应用
LI HAIYAN (author) / FAN GUANGXIN (author)
2022-04-08
Patent
Electronic Resource
Chinese
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