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  5. Thermodynamic research of the solubility of Cu2(OH)2CO3 in the ammonia-ammonium chloride-ethylenedia

Thermodynamic research of the solubility of Cu2(OH)2CO3 in the ammonia-ammonium chloride-ethylenedia

来源 :第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg | 被引量 : 0次 | 上传用户：zhoufei123456
【摘 要】
：
In order to decrease the evaporating rate of ammonia and increase the solubility of copper in the solution, ethylenediamine was added into the ammonia-ammonium chloride system to leach the copper cont
【作 者】
：
Wei Liu Motang Tang Zhaobo Tang Jing He Jianguang Yang Shenghai Yang Ruixiang Wang 
【机 构】
：
School of Metallurgical Science and Engineering, Central South University, Changsha, 410083, People
【出 处】
：
第五届国际湿法冶金学术会议(5th International Conference on Hydrometallurg
【发表日期】
：
2009年4期
【关键词】
：
thermodynamic solubility malachite ammonia ammonium chloride ethylenediamine(En) 
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　　In order to decrease the evaporating rate of ammonia and increase the solubility of copper in the solution, ethylenediamine was added into the ammonia-ammonium chloride system to leach the copper containing oxide ores.The solubility of malachite Cu2(OH)2CO3 in ammonia-ammonium chloride-ethylenediamine(En)-water system was calculated using the exponential computation method based on both mass balance and charge balance equations.The conditions of malachite Cu2(OH)2CO3 converting to atacamite Cu(OH)1.5Cl0.5 were studied.A group of experiments were designed to validate the veracity of the results of the thermodynamic calculation.
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