Method for preparing effective gas and recovering rare and noble metals by melting and gasifying organic wastes at high temperature

• Main Authors: WANG MINGXIA, WANG CHENFENG, ZHANG LEI, CHEN LIHAO, TANG WEI, CHEN JIAN
• Format: Patent
• Language: Chinese; English
• Published: 18.07.2023
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to the technical field of precious metal recovery and organic waste treatment, and provides a method for preparing effective gas and recovering rare and precious metals through high-temperature melting gasification of organic wastes. The method comprises the following steps: mixing the rare and noble metal-containing organic waste with oxygen, sequentially carrying out anoxic incomplete combustion and pyrolysis-melting-reduction reaction to obtain effective gas and a rare and noble metal-containing gasified melt, and quenching the rare and noble metal-containing gasified melt by chilling water to obtain the rare and noble metal-containing water-quenched slag. By adopting the method provided by the invention to recover the rare and noble metal-containing organic waste, the resource utilization of the organic waste can be completed while the rare and noble metal recovery is ensured, the comprehensive and efficient recovery of the organic waste is realized, and the recovery process is green