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cyanide solution[J]. Precious Metals, 2016, 37(3): 51-55. [8] PENG Z, LI Q G, LI Z Y, ZHANG G Q, CAO Z Y, GUAN W G. Removal of impurities from scandium solutions by ion exchange[J]. Journal of Central... secondary sources-A review[J]. Hydrometallurgy, 2012, 3: 30-51. [19] BEHNAMFARD A, SALARIRAD M M, VEGLIO F. Process development for recovery of copper and precious metals from waste printed circuit boards......
氰化滚镀铜工艺实践与探讨 李健强1,郭崇武1 (1.肇庆市华良金属精饰制品有限公司,广东,肇庆,526105) 摘要:氰化滚镀铜溶液中碳酸钠含量和主盐浓度不当,都会影响产品的质量.影响碳酸钠含量的因素较多,如溶液的pH值及NaOH浓度,槽电压等.对其具体影响进行了研究,提出措施:NaOH浓度在5.0~7.5 g/L可以将碳酸钠浓度控制在工艺范围内;降低镀槽电压和增加阳极面积有利于降低碳酸钠的浓度;较高的主盐浓度可以提高镀液的电流效率和均镀能力,有利于降低电镀成本. 关键词:氰化镀铜; 滚镀; 氢氧化钠; 碳酸钠; 均镀能力; cyanide copper- plating; barrel plating; NaOH; Na2 CO3; throwing power; [全文内容正在添加中] ......
韩国浦项钢铁公司FINEX工艺张寿荣1,张绍贤2(1.湖北省武汉市 武汉钢铁(集团)公司2.中冶南方工程技术有限公司,湖北武汉 430080)摘 要:介绍和评价了浦项钢铁公司的FINEX工艺的开发过程和FINEX工艺设备的运行现状及其对中国高炉炼铁的启示.关键词:炼铁； FINEX工艺......
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85.31 wt%. This suggests that acid leaching can increase the gold dissolution rate in the cyanide process.关键词:...Process mineralogy characteristics of acid leaching residue produced in low-temperature roasting-acid leaching pretreatment process of refractory gold concentratesShuang-hua Zhang1,Ya-jie Zheng1,Pan......
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Development of Expert Controller for Plasma Spraying Process CHEN Ke-xuan1,LI De-wu2,LI Chun-xu1,LI He-qi1 (1.Education Ministry Key Lab. of Advanced Processing Technology for Non-ferrous Materials... process control, the control system model is developed on the basis of analyzing control parameters and coating properties and their correlation, and the corresponding control method and regulations......
of interface reactions during plasma nitriding of tantalum Abstract: The reaction process on the surface of solid gases during nitriding of tantalum was discussed thermodynamically and dynamically. The effects of technical parameters such as pressure, temperature, electrical current density and voltage on the surface process were analyzed theoretically. The nitriding layers......
the conventional cyanide leaching process,pretreatment such as oxidation is required to achieve high gold recovery.Roasting is a relatively simple but not environment-friendly method;bio-oxidation technology seems to be more suitable for the oxidation of flotation concentrate.Other treatment methods involve cyanide leaching,thiourea leaching,ammoniacal thiosulfate leaching,carbon-in-pulp,and resin......
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