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; 文章编号:1672-7207(2010)03-0865-06 Pretreatment of copper anode slime for concentrating gold and silver ZHENG Ya-jie1, WANG Bei1, 2, SHI Jian-yuan2, SUN Zhao-ming1, LIU Zhao-cheng1 (1. School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China; 2. Daye Nonferrous Metals Company, Huangshi 435002, China) Abstract: The pretreatment of copper anode slime......
; TF04 文献标志码:A Pretreatment for V-bearing steelmaking slag by beneficiation methods and its effect on followed leaching procedure YE Guo-hua, TONG Xiong, LU Lu (Faculty of Land..., the pretreatment of a V-bearing slag from Sichuan province by beneficiation method and its effect on the followed leaching were investigated. The results indicate that an iron concentrate with grade of 72......
sulfate[J]. Journal of the Electrochemical Society, 1979, 126(3): 490-495. Roasting pretreatment of iron-sinking slag and zinc leaching residue in zinc hydrometallurgy LIU Yang1, TAN Jun1, YIN Zhou-lan1... residue is successfully discharged as gas form. The optimum conditions of roasting pretreatment by using resistance furnace are 1300 ℃ for 20min with oxygen concentration 70% at 0.2 L/min gas flow. Under......
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浸出 中图分类号:TF111 文献标志码:A Heat activation pretreatment and pressure leaching of complex copper sulfide ores XU Zhi-feng1, LI Qiang2, WANG Cheng-yan2 (1. School of Materials... of 1.25% of the mass of the ores, the leaching time 2 h. No loss of lead, zinc, sulfur and arsenic in the ores occurs during the heat activation pretreatment. The heat activation mechanism of complex......
University, Chongqing 400045, China) Abstract: In order to keep a proper biological process on operating properly and reduce the concentration of ammonia nitration with pretreatment measures when leachate... 200, 10-15 ℃, respectively according to the technical and economic analysis. Key words: ammonia stripping; pretreatment; leachate; ammonia nitrogen removal rate 垃圾渗滤液是一种被公认的污染物浓度高,水质水量(即渗滤液各项水质指标和渗滤液......
成可溶于水的MoO2(NO3)2,使钼保留率及回收率均有所降低.因此适宜的HNO3浓度为120 g/L. 表2 预处理添加剂种类的影响 Table 2 Effect of type of pretreatment reagent 在HNO3浓度120 g/L,浸出温度90 ℃,液固比3:1,浸出时间120 min的条件下,研究NH4NO3浓度对钼焙砂预处理过程钼保留率和浸...;Effect of pretreatment temperature on molybdenum leaching 2.3.4 预处理液固比的影响 在HNO3浓度120 g/L,NH4NO3浓度100 g/L,浸出温度90 ℃,浸出时间120 min的条件下,研究了不同预处理液固比对钼浸出的影响,其结果如表5所示.由表5可知,增大液固比,预处理过程钼保留率先升高后降低,而氨浸过程中钼浸出率先增......
emerge in various shapes. The indentation testing shows that the good adhesion between diamond film and the substrate after HF CVD deposition could be obtained. Key words:chemical pretreatment; cemented......
220 g/L的溶出条件下,矿石中氧化铝的相对溶出率可达到93.7%. 关键词:高硫铝土矿；焙烧预处理；脱硫；溶出性能 中图分类号:TF 803.21 文献标识码:A Roasting pretreatment of high-sulfur bauxite and digestion performance of roasted ore... conditions of roasting pretreatment by using muffle furnace and rotary tube furnace are 750 ℃ for 30 min, and 800 ℃ for 10 min by using fluidized bed. The roasted ore by using fluidized bed has the best......
of magnetite concentrate with high MgO content which exists in the Fe3O4 lattice as isomorphism by high pressure grinding roller were investigated. The results show that after pretreatment three times... are much higher than that of those pellets made of feed without the pretreatment, the compressive strength of green ball is 26.06 N per pellet and the drop number is 10.5 times from the 0.5 m in height......
