共搜索到32508条信息，每页显示10条信息，共3251页。用时：0小时0分0秒475毫秒
词:富硼渣；硫酸浸出；硼酸；一水硫酸镁；浸出率 中图分类号: TD 985 文献标志码:A Preparation of boric acid and magnesium sulfate monohydrate from boron-rich slag by sulfuric acid leaching method LI Jie1..., Northeastern University, Shenyang 110004, China) Abstract: The sulfuric acid was used to decomposing boron-rich slag. The best test conditions of the boron-rich slag sulfuric acid leaching were determined......
: the sulfuric acid concentration, surfactant concentration and temperature. Among these three factors, the surfactant concentration is the most important contributor to leaching rate. After obtaining... for leaching were finally obtained as follows: the sulfuric acid concentration was 60 g/L, the surfactant concentration was 0.00914 mol/L, and the temperature was 45 °C. The leaching rate was 66.81......
Study on mechanisms of different sulfuric acid leaching technologies of chromitePei-yang Shi1,2,Cheng-jun Liu1,2,Qing Zhao1,2,Hao-nan Shi31. Key Laboratory for Ecological Metallurgy of Multimetallic... of Technology摘 要:The extraction of chromate from chromite via the sulfuric acid leaching process has strong potential for practical use because it is a simple......
conditions of a concentration of sulfuric acid 50%,the sulfuric acid dosage coefficient 1.2,leaching temperature 105 ℃ and leaching time 3 h. The leaching rate of Fe is 93.66%. The leaching rate of Au... tailings decreases by 38.8% after reduction roasting,sulfuric acid leaching,oxidizing roasting and cyanide leaching.Key words:cyanide tailings; reduction roasting; sulfuric acid leaching; cyanide process......
treatment was investigated. The main composition of the sediment includes 6% zinc and other metal elements such as Ca, Fe, Cu, Mg. The effects of sulfuric acid concentration, temperature, leaching time... in the experiments. 2.3 Procedure The effects of sulfuric acid concentration, temperature, leaching time and liquid-to-solid ratio on the leaching rate of zinc were investigated. The orthogonal experiments were......
The Optimized Synthesis of Starch-g-Lactic Acid Copolymer with High Grafting Degree Catalyzed by Sulfuric Acid胡志颖School of Materials Science and Engineering, Wuhan University of Technology摘 要:The starch-g-lactic acid copolymer was synthesized with catalysis of sulfuric acid by onestep process, and the structure of starch-g-lactic acid copolymer......
, China) Abstract: The intensification process consisting of sulfuric acid roasting – water leaching was conducted to extract U, Mo from U-Mo ore, and the single factor experiments were performed... parameters: mass ratio of H2SO4 to ore 0.5:1, sulfuric acid concentration of 82%, roasting temperature of 270 ℃ and roasting time of 120 min, which have minor increase of U and substantial increase of Mo......
, in the present study, it was selected as a reducing agent in order to increase the leaching rate of metals. The effects of the sulfuric acid concentration, solid-to-liquid ratio, reducing agent... and examined. 97% of the available Li, 96% of the available Ni, 95% of the available Co, and 86% of the available Mn are extracted under the following optimized conditions: sulfuric acid concentration......
；浸金；除铁Pretreatment by sulfuric acid-curing of calcine roasting for gold ores with high sulfur and arsenic contentsYANG Yong-bin,ZENG Guan-wu,LI Qian,LIU Xiao-liang,JIANG Tao,LIU Bo(School of Minerals... and leaching was used to remove iron,release packaged gold and enhance gold leaching rate. The results show that the product of hematite and sulfuric acid,ferric sulfate,converts to rhomboclase HFe(SO4)2......
equipment and production of sulfuric acid. However, in the high pressure leaching process, the sulfides are oxidized to elemental sulfur, which is recovered and stockpiled[6]. Leaching of zinc sulfide..., initial acidic concentration, leaching time, oxygen partial pressure and stirring speed on the leaching rate of Zn (II) and conversion rate of S in the single factor of high pressure leaching......
