Method for harmless treatment of waste white phosphorus and recovery of copper
By slowly reacting waste white phosphorus with copper sulfate solution at room temperature and reducing copper with potassium borohydride, the problems of spontaneous combustion and violent reaction of white phosphorus are solved, and harmless treatment of white phosphorus and copper recycling are achieved, which are safe, efficient and economical.
CN119824240APending Publication Date: 2025-04-15YUNNAN DADI FENGYUAN ENVIRONMENTAL PROTECTION CO LTD
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Patent Information
- Application Number
- CN202510078398.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2025-04-15
AI Technical Summary
Technical Problem
The waste white phosphorus is exposed to air or mixed with oxidants, which may pose a safety hazard, and is very prone to spontaneous ignition, react violently, and releases highly corrosive phosphorus pentoxide gas.
Method used
The waste white phosphorus and copper sulfate solution are slowly reacted under normal temperature and pressure to produce elemental silver, cuprous phosphide and acids. The copper is reduced by potassium borohydride to achieve harmless treatment of white phosphorus and copper recycling.
Benefits of technology
Safely treat white phosphorus at room temperature, avoid spontaneous combustion and violent reactions, realize effective recycling of copper, rational use of resources, save costs, and have good economic benefits.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention discloses a method for harmless treatment of waste white phosphorus and recovery of copper, and belongs to the technical field of harmless treatment of hazardous waste, white phosphorus is dissolved in carbon disulfide, the carbon disulfide is slowly and dropwise added into a copper sulfate aqueous solution at the speed of 0.1-0.3 kg / min and reacts with the copper sulfate aqueous solution to generate copper and cuprous phosphide, and the cuprous phosphide is recycled. According to the method, the white phosphorus is dissolved in the carbon disulfide, the specific surface area of the white phosphorus is increased, the white phosphorus can be in full contact with the copper sulfate solution at the normal temperature to react to generate copper and cuprous phosphide, and the cuprous phosphide can be recycled after the reaction is finished. The method is simple, easy to operate and capable of saving chemicals, copper in copper sulfate is recycled while waste white phosphorus is subjected to innocent treatment, resources are reasonably utilized, cost is saved, safety and high efficiency are achieved, and good economic benefits are achieved.
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