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of China, 2016, 26(2): 589-598. [3] WANG Wen-jun, WANG Zuo-ran, YUAN Tie-chui, LI Rui-di, LI Hai-hua, LIN Wen-jun, ZHENG Dan. Oxygen evolution and corrosion behavior of Pb-CeO2 anodes in sulfuric acid.... Effect of pretreatment on the anodic behaviour of lead alloys for use in electrowinning operations. I [J]. Journal of Applied Electrochemistry, 1980, 10(5): 623-626. [13] FREE M, MOATS M, ROBINSON T......
. Research status of pretreatment methods for refractory gold deposits[J]. Science and Engineering of Nonferrous Metals, 2017, 8(2): 83-89. [10] 王伟晶, 吕永江, 王玉红. 火法炼金技术的应用[J]. 黄金, 2006(7): 36-37. WANG... and elemental sulfur in zinc pressure oxidation leaching slag[D]. Changsha: Central South University, 2012. [31] 黄怀国. 难处理金精矿的酸性热压预氧化研究[J]. 矿冶工程, 2007(4): 42-45. HUANG Huai-guo. Study on acid thermal......
reagents were used in the precipitation experiments. Also, sodium hydroxide (NaOH, 97%) and sulfuric acid (H2SO4, 95%-98%) were purchased from Sigma-Aldrich and employed for pH adjustment...; (18) Generation of a strong acid is another reason for the decrease in pH value during precipitation process; i.e.......
elements present in its matrix (Pb, Cd, As, Sb, etc.) and the generation of acid drainage which seriously pollutes the natural waters [1,2]. Therefore, the aqueous oxidation of chalcopyrite has been... as an important contributor to acid metalliferous drainage [2], a major environmental problem. Considering the results obtained for other sulfides [19-21], a way to inhibit the chalcopyrite aqueous oxidation......
emissions and in the ashes[J]. Renewable Energy, 2015, 81: 103-112. [31] LEE J K, LEE J S, AHN Y S, et al. Simple pretreatment processes for successful reclamation and remanufacturing of crystalline... H, LEE J K, LEE J S, et al. Environmentally friendly recovery of Ag from end-of-life c-Si solar cell using organic acid and its electrochemical purification[J]. Hydrometallurgy, 2017, 167: 129-133......
brings a lot of difficulties to the recycling of SAD. Therefore, denitrification pretreatment of SAD is required. At present, hydrometallurgical processes such as water, alkali, and acid leaching... is as follows. 0.300 g of SAD was added to the conical flask containing 20% NaOH solution for distillation, and the distilled solution was absorbed with the nearly saturated boric acid solution, which......
-acid dissociable cyanides) discharge are being tightened by local governments worldwide due to its high toxicity and volatility [5]. Thus, the disposal of cyanide-containing wastes from the cyanidation... Ya-li, LI Huai-mei, YU Xian-jin. Fe extraction from high-silicon and aluminum cyanide tailings by pretreatment of water leaching before magnetic separation [J]. Transactions of Nonferrous Metals......
Materials and methods 2.1 Description of clayey soil The clayey soil sample was collected from Dalian field, China. The clayey soil sample underwent pretreatment processes to satisfy the demands......
of Metallurgy, 2002, 31(4) : 246-250. [16] HANS W F. Process for the removal of arsenic, antimony, tin and other acid oxide producing impurities from copper: US 3,262,773[P]. 1966-07-26. [17] 王学文, 王明... removal from anode slime by pretreatment[J]. Precious Metals, 2002, 23(4): 1-5. [26] 周 犇. 金银提取过程中砷害综合治理实践[J]. 有色金属(冶炼部分), 2002(3): 19-21. ZHOU Ben. Arsenic comprehensive treatment practice in the Au......
, present and future of biohydrometallurgy[J]. Hydrometallurgy, 2001, 59(2/3): 127-134. [20] 孙全庆. 难处理金矿石的碱法加压氧化预处理[J]. 湿法冶金, 1999(2): 14-18. SUN Quan-qing. Alkaline pressurized oxidation pretreatment......