从含铊酸浸渣中选择性分离镉的方法
By calcining thallium acid-containing leaching residue in a reducing atmosphere, cadmium can be selectively separated, solving the problems of high additive consumption and high cost in existing technologies. This achieves efficient separation of cadmium and resource reuse, reducing the risk of environmental pollution.
CN116397101BActive Publication Date: 2026-07-17CENT SOUTH UNIV
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2023-03-02
- Publication Date
- 2026-07-17
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Figure CN116397101B_ABST
Abstract
本发明提供了一种从含铊酸浸渣中选择性分离镉的方法，包括：将含铊酸浸渣在700～800℃，还原性气氛中焙烧1～3h；收集气体，得含镉烟尘；其中，所述含铊酸浸渣包括铅、锌、镉、铊金属单质，铅、锌、镉、铊氧化物以及铅、锌、镉、铊硫酸盐。相比于现有技术，所述从含铊酸浸渣中选择性分离镉的方法可以使镉的挥发效率达到80％以上。挥发后所得的烟尘可用于冶炼金属镉，同时实现了含铊酸浸渣的大幅减量。在实现了有价金属回收的同时降低了含铊酸浸渣的环境风险。
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