Separation method and detection method for platinum group metal in industrial waste catalyst smelting tailings

• Main Authors: LIU DACHUN, WANG FEI, XU BO, XU BAOQIANG, ZHA GUOZHENG, JIANG WENLONG, YANG BIN, WU JIAN, TIAN YANG, LI YIFU
• Format: Patent
• Language: Chinese; English
• Published: 08.09.2023
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; METALLURGY; PHYSICS; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TESTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention provides a method for separating platinum group metals in industrial waste catalyst smelting tailings and a method for detecting the platinum group metals, and belongs to the technical field of analysis and detection of the platinum group metals. The method provided by the invention comprises the following steps: mixing the industrial waste catalyst smelting tailings, an acid leaching agent and a hydrogen peroxide solution, and carrying out acid oxidation leaching to obtain a leaching solution; the acid leaching agent comprises hydrochloric acid and hydrofluoric acid; the leachate is mixed with a tellurium solution and a stannous chloride solution for co-precipitation, precipitate is obtained, and the precipitate comprises elementary tellurium and a compound of tellurium and platinum group metal; and dissolving the precipitate in aqua regia, and removing nitric acid to obtain a solution of chlorine complex anions containing platinum group metals. The normal-pressure acidic oxidation leaching red