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Treatment process suitable for copper smelting waste acid arsenic
The invention discloses a treatment process suitable for copper smelting waste acid arsenic, which specifically comprises the following steps: S1, neutralizing the copper smelting waste acid arsenic by using limestone until the pH value is 1-1.5, and then carrying out centrifugal filtration to obtain gypsum slag and filtrate; neutralizing the filtrate with lime until the pH value is 6-9, and carrying out filter pressing to form calcium arsenate slag; s2, the calcium arsenate slag obtained in the step S1 is subjected to steam drying and then granulated through a granulator, then the granulated calcium arsenate slag is mixed with copper concentrate, slag concentrate and quartz, the mixture enters a copper pyrometallurgy system together, high-temperature smelting is conducted under the condition of 1150-1200 DEG C, and the calcium arsenate slag forms a glass solidified body structure in the high-temperature smelting process; and S3, after the slag selection process, the calcium arsenate slag with the glass solidified body structure enters tailing slag. When the method is used for treating the copper smelting waste acid arsenic, the leaching toxicity of the finally obtained tailing slag reaches the I-class general solid waste standard, and the use of the tailing slag as a cement iron ore additive is not influenced. The system has the advantages of low construction cost and simplicity and convenience in operation.
本发明公开了一种适用于铜冶炼污酸砷的处置工艺，具体过程为：S1、将铜冶炼污酸砷采用石灰石中和至pH＝1‑1.5后离心过滤，得到的石膏渣和滤液；所述滤液用石灰中和至pH＝6‑9后，压滤形成砷酸钙渣；S2、步骤S1所得的砷酸钙渣经蒸汽烘干后，利用制粒机制粒，然后与铜精矿、渣精矿和石英混合，一同进入铜火法冶炼系统，在1150‑1200℃条件下高温熔炼，砷酸钙渣在高温熔炼过程中形成玻璃固化体的结构；S3、经渣选工艺后，玻璃固化体结构的砷酸钙渣进入尾矿渣。利用本发明进行铜冶炼污酸砷的处置，最终得到的尾矿渣浸出毒性达到第Ⅰ类一般固体废弃物标准，不影响其作为水泥铁矿添加剂的使用。且本发明具有建设成本低，运行简便的优点。
Treatment process suitable for copper smelting waste acid arsenic
The invention discloses a treatment process suitable for copper smelting waste acid arsenic, which specifically comprises the following steps: S1, neutralizing the copper smelting waste acid arsenic by using limestone until the pH value is 1-1.5, and then carrying out centrifugal filtration to obtain gypsum slag and filtrate; neutralizing the filtrate with lime until the pH value is 6-9, and carrying out filter pressing to form calcium arsenate slag; s2, the calcium arsenate slag obtained in the step S1 is subjected to steam drying and then granulated through a granulator, then the granulated calcium arsenate slag is mixed with copper concentrate, slag concentrate and quartz, the mixture enters a copper pyrometallurgy system together, high-temperature smelting is conducted under the condition of 1150-1200 DEG C, and the calcium arsenate slag forms a glass solidified body structure in the high-temperature smelting process; and S3, after the slag selection process, the calcium arsenate slag with the glass solidified body structure enters tailing slag. When the method is used for treating the copper smelting waste acid arsenic, the leaching toxicity of the finally obtained tailing slag reaches the I-class general solid waste standard, and the use of the tailing slag as a cement iron ore additive is not influenced. The system has the advantages of low construction cost and simplicity and convenience in operation.
本发明公开了一种适用于铜冶炼污酸砷的处置工艺，具体过程为：S1、将铜冶炼污酸砷采用石灰石中和至pH＝1‑1.5后离心过滤，得到的石膏渣和滤液；所述滤液用石灰中和至pH＝6‑9后，压滤形成砷酸钙渣；S2、步骤S1所得的砷酸钙渣经蒸汽烘干后，利用制粒机制粒，然后与铜精矿、渣精矿和石英混合，一同进入铜火法冶炼系统，在1150‑1200℃条件下高温熔炼，砷酸钙渣在高温熔炼过程中形成玻璃固化体的结构；S3、经渣选工艺后，玻璃固化体结构的砷酸钙渣进入尾矿渣。利用本发明进行铜冶炼污酸砷的处置，最终得到的尾矿渣浸出毒性达到第Ⅰ类一般固体废弃物标准，不影响其作为水泥铁矿添加剂的使用。且本发明具有建设成本低，运行简便的优点。
Treatment process suitable for copper smelting waste acid arsenic
一种适用于铜冶炼污酸砷的处置工艺
LIAO YUANHANG (author) / QIU JIANSEN (author) / LIN GUOBIAO (author) / LIN FAN (author) / LI YAOQUAN (author) / NING WANTAO (author) / ZHANG YONGFENG (author) / LIN HONGHAN (author) / LI TAO (author) / GE SUZHI (author)
2023-01-03
Patent
Electronic Resource
Chinese
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