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硫脲法提金新工艺中常有银硫脲配合物的生成,目前硫脲法中对金的浸出、分离、提取的工艺问题已作了不少研究工作,但对金、银硫脲配合物本身的物理化学性质研究得尚不充分,本文报道银硫脲配合物热分解机理方面的研究结果。实验仪器与试剂LCT型示差热天平系北京光学仪器厂产品。温度用分析纯的Sn粉进行校验,外推始点温度为230℃。红外谱用美国Perkin Elmer公司PE-480B型光栅红外分光光度计记录,KBr压片。分析纯硫脲用二次蒸馏水进行重结晶,产品纯度在99.5%以上分析纯AgNO_3,含量不少于99.8%。分析纯盐酸。以上试剂均系西安化学试剂厂产品。
Thiourea method gold extraction process often silver thiourea complex formation, the current thiourea method of gold extraction, separation, extraction process has made a lot of research work, but the gold and silver thiourea complex The physical and chemical properties of the silver thiourea complex have not been fully studied. The results of the study on the mechanism of thermal decomposition of silver thiourea complexes are reported. Laboratory instruments and reagents LCT-type differential thermal balance Beijing Optical Instrument Factory products. The temperature was verified with analytical Sn powder, the extrapolation onset temperature was 230 ° C. Infrared spectroscopy using the United States Perkin Elmer PE-480B grating infrared spectrophotometer records, KBr tablet. Analysis of pure thiourea with double distilled water for recrystallization, product purity above 99.5% pure AgNO 3, content of not less than 99.8%. Analytical pure hydrochloric acid. The above reagents are the Xi’an Chemical Reagent Factory products.