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technology generally requires a high energy-consumption pretreatment and a long-process time but with a low lead recovery. Glass-ceramic synthesis was confirmed as an efficient and applicable approach... mL of glacial acetic acid was dissolved in 500 mL of deionized water to prepare the leaching solution (acetic acid buffer solution). Second, 64.3 mL of 1 mol/L NaOH solution was added......
prepared by a new pretreatment of diamond powder[J]. Composites Part B (Engineering), 2013, 52: 182-186. [66] WEBER L, TAVANGAR R. On the influence of active element content on the thermal conductivity......
92.3%,铝酸盐返回铝生产系统.湿法浸出铁和火法相比操作简单,生产过程较易实现连续化和自动化,但酸浸后除铁之外的许多金属元素也被浸出,给后续收集铁造成一定困难,对此可选用合适萃取剂或化学沉淀等方法将其纯化,提高产物纯度. 图4 草酸浸出回收赤泥中的铁 Fig. 4 Flow diagram of Fe recovery from red mud by Oxalic acid..., 2011. DENG Hai-xia. Study on extracting of scandium from hydrochloric acid leaching solution of red mud[D]. Taiyuan: Taiyuan University of Technology, 2011. [4] LI X B, XIAO W, LIU W, LIU G H, PENG......
, such as waste acid, ammonia nitrogen wastewater, waste gypsum and biomass, have become major problems restricting the development of the social economy. Regulation of bauxite residues alkalinity by industrial... leaching with carbon dioxide, and water and acid leaching [32–34]. Amelioration with gypsum has been used for grassland restoration, precipitating carbonates and rapidly forming calcite; this suppresses......
between pH and free H2SO4 concentration in electrolyte solutions were also discussed. pH-acid concentration dependence for zinc electrolyte was between experimental and calculated curves for pure H2SO4... to a less extend [18]. Hydrochloric acid is well-suitable and high-effective agent due to its aggressive action on the chlorine-containing ash, but chloride electrolytes are fairly problematic during......
, HU Ji-ming, ZHANG Jian-qing, et al. Progress in novel surface pretreatment and studying method of origanic coated metals[J]. Surface technology, 2005, 34(1): 1-4. [25] BORGES J N, BELMONTE T, GUILLOT J... in an acid copper electroplating bath[J]. Journal of Electroanalytical Chemistry, 1992, 338(1/2): 179-187. [55] ZHANG D, YANG H. Gelatin-stabilized copper nanoparticles: Synthesis, morphology......