CAJ | 학술논문

采用碘?碘化物浸出体系,从碘初始含量、碘与碘化物摩尔比和浸出液pH值3个影响因素入手,考察不同碘化物(碘化铵、碘化钾和碘化氢)对金精矿碘化浸出过程的影响.结果表明:在碘初始含量为1%,碘与碘化物摩尔比为1:8,浸出液pH值为7,液固比为4:1,搅拌速度为600 r/min,浸出时间为4 h,温度为25℃的条件下,用碘化铵或碘化钾作为碘化浸金的络合剂,金的浸出率均能达到90%左右,而用碘化氢(其水溶液为氢碘酸)作络合剂时,金的浸出率仅有75%.考虑到不同碘化物浸金效果差异及工业应用的可行性等因素,确定碘化钾为适宜的金精矿碘化浸出络合剂.
채용전?전화물침출체계,종전초시함량、전여전화물마이비화침출액pH치3개영향인소입수,고찰불동전화물(전화안、전화갑화전화경)대금정광전화침출과정적영향.결과표명:재전초시함량위1%,전여전화물마이비위1:8,침출액pH치위7,액고비위4:1,교반속도위600 r/min,침출시간위4 h,온도위25℃적조건하,용전화안혹전화갑작위전화침금적락합제,금적침출솔균능체도90%좌우,이용전화경(기수용액위경전산)작락합제시,금적침출솔부유75%.고필도불동전화물침금효과차이급공업응용적가행성등인소,학정전화갑위괄의적금정광전화침출락합제.
Using the iodine-iodide leaching system, the effects of different iodides (ammonium iodide,potassium iodide, hydrogen iodide)on gold concentrates leaching process were discussed from the influence factors, such as initial iodine content, iodine and iodide ratio and solution pH value. The results show that, when ammonium iodide or potassium iodide is used as complex agent,under the conditions of initial iodine content of 1%, iodine and iodide molar ratio of 1:8, pH value of 7, liquid-solid ratio of 4:1, stirring speed of 600 r/min, leaching time of 4 h and temperature of 25℃, the gold leaching rates are around 90%?whereas the gold leaching effect is poorer when hydrogen iodide(aqueous solution is hydroiodic acid) is used as complex agent, and the gold leaching rate is only 75%. Considering the difference of leaching effect and availability of industry and so on,potassium iodide is the suitable complex reagent of gold concentrate leaching in iodine-iodide solution.