种以聚乙烯醇磷酸铵为添加剂的硫代硫酸盐浸金方法

• Format: Patent
• Language: Chinese
• Published: 12.04.2017
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; FERROUS OR NON-FERROUS ALLOYS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF ALLOYS OR NON-FERROUS METALS

本发明提供了种以聚乙烯醇磷酸铵为添加剂的硫代硫酸盐浸金方法。在浸出矿浆中加入0.1～10g/dm的聚乙烯醇磷酸铵能在较宽的pH范围内(9～12)显著降低硫代硫酸盐的耗量，同时可明显提高浸金率。所获得的浸出液成分简单，有利于其循环使用和金的回收。此外，该添加剂无毒且可降低浸出矿浆中氨水的使用浓度至0.04～0.10mol/dm，有利于环境保护。 The invention provides a method for soaking gold by virtue of thiosulfate utilizing ammonium alcohol polyvinyl phosphate as an additive. 0.1 to 10g/dm ammonium alcohol polyvinyl phosphate is added into leaching pulp, so that the thiosulfate consumption is obviously reduced within a relatively wide pH range (9 to 12), and furthermore, the gold leaching rate can be obviously improved; obtained leaching solution is simple in ingredients and is beneficial to cycle use and gold recovery. In addition, the additive is nontoxic, is capable of reducing the use concentration of ammonia water in the leaching slurry to 0.04 to 0.10mol/dm and is beneficial to environmental conservation.