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Method for comprehensively utilizing zinc sulfate solution containing dilute acid in zinc hydrometallurgy process
The invention discloses a method for comprehensively utilizing a zinc sulfate solution containing dilute acid in a zinc hydrometallurgy process, which comprises the following steps: (1) mixing the zinc sulfate solution containing dilute acid in the zinc hydrometallurgy process with limestone slurry to carry out neutralization reaction, and adding a flocculant to concentrate to obtain gypsum slurry; (2) carrying out impurity removal treatment on the gypsum slurry to obtain high-purity gypsum; (3) calcining the high-purity gypsum to obtain beta-type gypsum powder clinker; (4) cooling and then aging the beta-type gypsum powder clinker; and (5) carrying out ball-milling modification on the aged material obtained in the step (4) so as to obtain a beta-type gypsum powder finished product. By adopting the method, sulfuric acid in the zinc sulfate solution containing dilute acid in the zinc hydrometallurgy process can be converted into high-quality beta-type gypsum powder, resource and high-valued utilization of acid liquor in the zinc hydrometallurgy process is realized, the enterprise benefit is favorably improved, and the national requirements on green industrial development, energy conservation and emission reduction are satisfied.
本发明公开了一种综合利用湿法炼锌过程中含稀酸的硫酸锌溶液的方法，包括：(1)将湿法炼锌过程中含稀酸的硫酸锌溶液与石灰石浆混合进行中和反应，然后添加絮凝剂提浓，以便得到石膏浆料；(2)将所述石膏浆料进行脱杂处理，以便得到高纯石膏；(3)将所述高纯石膏进行煅烧，以便得到β型石膏粉熟料；(4)将所述β型石膏粉熟料冷却后进行陈化；(5)将步骤(4)得到的陈化后料进行球磨改性，以便得到β型石膏粉成品。采用该方法可以将湿法炼锌过程中含稀酸的硫酸锌溶液中的硫酸转化为高品质的β型石膏粉，实现了湿法炼锌过程中酸液的资源化、高值化利用，有利于提升企业效益，满足国家对产业绿色发展、节能减排的要求的优点。
Method for comprehensively utilizing zinc sulfate solution containing dilute acid in zinc hydrometallurgy process
The invention discloses a method for comprehensively utilizing a zinc sulfate solution containing dilute acid in a zinc hydrometallurgy process, which comprises the following steps: (1) mixing the zinc sulfate solution containing dilute acid in the zinc hydrometallurgy process with limestone slurry to carry out neutralization reaction, and adding a flocculant to concentrate to obtain gypsum slurry; (2) carrying out impurity removal treatment on the gypsum slurry to obtain high-purity gypsum; (3) calcining the high-purity gypsum to obtain beta-type gypsum powder clinker; (4) cooling and then aging the beta-type gypsum powder clinker; and (5) carrying out ball-milling modification on the aged material obtained in the step (4) so as to obtain a beta-type gypsum powder finished product. By adopting the method, sulfuric acid in the zinc sulfate solution containing dilute acid in the zinc hydrometallurgy process can be converted into high-quality beta-type gypsum powder, resource and high-valued utilization of acid liquor in the zinc hydrometallurgy process is realized, the enterprise benefit is favorably improved, and the national requirements on green industrial development, energy conservation and emission reduction are satisfied.
本发明公开了一种综合利用湿法炼锌过程中含稀酸的硫酸锌溶液的方法，包括：(1)将湿法炼锌过程中含稀酸的硫酸锌溶液与石灰石浆混合进行中和反应，然后添加絮凝剂提浓，以便得到石膏浆料；(2)将所述石膏浆料进行脱杂处理，以便得到高纯石膏；(3)将所述高纯石膏进行煅烧，以便得到β型石膏粉熟料；(4)将所述β型石膏粉熟料冷却后进行陈化；(5)将步骤(4)得到的陈化后料进行球磨改性，以便得到β型石膏粉成品。采用该方法可以将湿法炼锌过程中含稀酸的硫酸锌溶液中的硫酸转化为高品质的β型石膏粉，实现了湿法炼锌过程中酸液的资源化、高值化利用，有利于提升企业效益，满足国家对产业绿色发展、节能减排的要求的优点。
Method for comprehensively utilizing zinc sulfate solution containing dilute acid in zinc hydrometallurgy process
综合利用湿法炼锌过程中含稀酸的硫酸锌溶液的方法
ZHU BEIPING (author) / YU LINGFEI (author) / LI YUN (author) / WANG CHAOMIN (author) / CHENG SHIXIONG (author) / LI DUNHUA (author) / HE WENMING (author) / LI CHAO (author) / WANG TIANWAI (author) / ZHAO YANFEI (author)
2020-11-17
Patent
Electronic Resource
Chinese
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