基于等离子体的硫化砷渣贫化处理铜渣的方法
By using a plasma torch to excite the reaction between arsenic sulfide slag and copper slag to generate highly active S2-, the problems of smoke and dust and insufficient sulfidation in copper slag recycling are solved. This enables the efficient recovery of valuable metals such as copper, lead, and zinc, as well as the fixation of arsenic, thereby improving resource utilization and environmental safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CENT SOUTH UNIV
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing copper slag recycling processes suffer from the generation of harmful fumes and insufficient sulfidation reduction, resulting in low recovery efficiency of valuable metals such as copper, lead, and zinc. Furthermore, the long-term storage of sulfided arsenic slag pollutes the environment.
A plasma torch is used to excite arsenic sulfide slag and copper slag to undergo a sulfidation reaction in a depletion furnace, generating highly active S2-, which reacts with valuable metals in the copper slag. The valuable metals are then fixed in the metal matte phase through a depletion-slow cooling process. Using arsenic sulfide slag as a depletion agent eliminates the need for additional reducing agents.
It achieves efficient recovery of valuable metals such as copper, lead, and zinc. The arsenic element in the arsenic sulfide slag is fixed in the slag phase, reducing the generation of harmful dust, improving resource recovery rate and environmental safety, and meeting the requirements of green and clean production.
Smart Images
Figure CN120536738B_ABST