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CN105858717B 一种纳米级四碱式硫酸铅蓄电池添加剂的制备方法 有权 转让

一种纳米级四碱式硫酸铅蓄电池添加剂的制备方法
摘要：
本发明公开了一种纳米级四碱式硫酸铅蓄电池添加剂的制备方法，包括如下步骤：步骤1)将废旧的铅酸蓄电池粉碎，加入络合溶液中，在60～65℃下搅拌30～40min，减压过滤，去除滤渣；步骤2)将步骤1)中得到的滤液保持60～65℃并通入二氧化碳，然后保持60～65℃的反应温度反应30～40min，减压过滤，得到铅盐沉淀和络合滤液。步骤3)将上述步骤2)中的络合滤液返回至步骤1)中用于络合溶解经过预处理后的含铅物料。步骤4)将上述步骤2)中的铅盐沉淀溶于硫酸中，在75～80℃下恒温搅拌，转速为600‑1000转/分钟，搅拌30～35min后加入硫酸铅，继续搅拌3～4h；将混合物进行烘干，研磨粉碎，得到粉末状四碱式硫酸铅。
摘要（英）：

The invention discloses a preparation method of a nano-scale tetrabasic lead sulfate storage battery additive. The preparation method comprises the following steps: 1) crushing waste lead acid storage batteries, adding the crushed batteries into a complex solution, performing stirring at 60-65 DEG C for 30-40 minutes, performing vacuum filtration, and removing filter residues; 2) keeping the temperature of the filtrate obtained in the step 1) at 60-65 DEG C, introducing carbon dioxide, then keeping the reaction temperature at 60-65 DEG C to perform a reaction for 30-40 minutes, and performing vacuum filtration to obtain a lead salt deposit and a complex filtrate; 3) returning the complex filtrate obtained in the step 2) to the step 1) for complex dissolution of a pretreated lead-containing material; and 4) dissolving the lead salt deposit obtained in the step 2) in sulfuric acid, performing stirring at a constant temperature of 75-80 DEG C for 30-35 minutes at a rotating speed of 600-1000r/min, then adding lead sulfate, performing stirring continuously for 3-4 hours, drying the mixture, and performing grinding and crushing to obtain powdery tetrabasic lead sulfate.

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