CAJ | 학술논문

以某深度碳还原处理后的镍冶炼渣的磁选精矿为研究对象，对其组成以及镍、铜和钴在其中的赋存状态进行了检测和分析，研究了浸出该精矿中铜、镍、钴的可行性。以氨水?碳酸盐缓冲溶液为浸出剂，氧气为氧化剂，分别探讨了物料细度、浸出时间、浸出温度、氨水浓度、铵盐浓度和氧气压力对浸出效果的影响，得出最优浸出工艺为：物料料度为d90＝68μm，氨水浓度为3．0 mol／L，碳酸铵浓度为0．5 mol／L，氧气压力为0．3 MPa，温度为60℃，浸出时间为120 min。在此条件下，铜浸出率为62．5％，镍浸出率为10％，钴浸出率为65．8％。并以铜为例，对氨浸试验进行了简要的机理分析。
이모심도탄환원처리후적얼야련사적자선정광위연구대상，대기조성이급얼、동화고재기중적부존상태진행료검측화분석，연구료침출해정광중동、얼、고적가행성。이안수?탄산염완충용액위침출제，양기위양화제，분별탐토료물료세도、침출시간、침출온도、안수농도、안염농도화양기압력대침출효과적영향，득출최우침출공예위：물료료도위d90＝68μm，안수농도위3．0 mol／L，탄산안농도위0．5 mol／L，양기압력위0．3 MPa，온도위60℃，침출시간위120 min。재차조건하，동침출솔위62．5％，얼침출솔위10％，고침출솔위65．8％。병이동위례，대안침시험진행료간요적궤리분석。
A magnetic concentrate of nickel smelting slag after deep carbon reduction was taken for analysis of its compositions and occurrence of Ni, Cu and Co in it, so as to investigate the feasibility of leaching of Cu, Ni, Co from the concentrate. With ammonia?carbonate buffer solution as leaching agent and oxygen as oxidizing agent, impacts of grain size, leaching time and temperature, concentration of ammonium hydroxide and ammonium salt, and oxygen pressure on the leaching effect were discussed respectively. It is found that with the following optimum conditions for leaching process:material size ( d90=68μm) , concentrations of NH4 OH and ( NH4 ) 2 CO3 at 3.0 mol/L and 0.5 mol/L respectively, oxygen pressure at 0. 3 MPa, leaching at 60 ℃ for 120 min, leaching rates of Cu, Ni and Co reach 62?5%, 10% and 65.8%, respectively. At the end, the kinetics of Cu leaching behavior was analyzed.