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solutions, while the curve was shifted towards lower pH if ferric ions were in the solution. Key words: top ash; zinc; leaching; purification; electrowinning; recycling 1 Introduction Hot dipping... for galvanizers to recycle their dross to recover some of zinc. Therefore, it is sold at 65%-75% of zinc price to pyrometallurgical recycling plants [5,6,10]. In turn, the generation of the top ash is usually......
words: manganese oxide; sulfation roasting; thermodynamics analysis; recycling 中国锰矿资源绝大部分是含锰在25%(质量分数)以下的低品位锰矿,需分选富集后才能有效利用[1-2].对矿物组分复杂,嵌布粒度微细,共生关系密切的低品位难选锰矿,化学分选是最有效的处理方法[3-4].尤其是难选氧化锰矿,锰主要以二氧化锰的形式存在,其......
(1) 式中:qe为平衡吸附容量,mg/g;ρ0为MG的初始质量浓度,mg/L;ρe为吸附平衡时溶液中MG的质量浓度,mg/L;V为溶液的体积,mL;m为吸附剂的质量,mg. 吸附剂对MG的去除率R按下式计算: &......
:TC4合金;连续变断面循环挤压;显微组织;晶粒细化 中图分类号:TG146.2 文献标志码:A Effect of continuous variable cross-section recycling extrusion on microstructure... titanium alloy was deformed by continuous variable cross-section recycling extrusion (CVCE), and the effects of deformation loop, temperature and speed on the microstructure were investigated......
Fabrication of phosphor bronze/Al two-phase material by recycling phosphor bronze chips using hot extrusion process and investigation of their microstructural and mechanical propertiesMajid Hosseini... methods for recycling chips, solid-state techniques have become popular, whereby waste metals are directly recycled into consolidated products with the desired shapes and designs. We investigated......
integral and the other is associated with the subsurface boundary integral. The equivalent multiple linear systems with closer right-hand sides than the original systems were constructed. A recycling... modeling; direct current resistivity; multiple linear systems; preconditioned conjugate gradient; recycling Krylov subspace 1 Introduction Direct current (DC) resistivity methods are widely used......
; 文献标识码:A Significance, status and important issues for recycling utilization of metal secondary resource in China WANG Cheng-yan1, QIU Ding-fan1, 2, XU Sheng-ming2 1. Beijing General... for recycling utilization of metal secondary resource in China are highlighted in terms of resource saving, energy reduction and environment promotion. Although great progress has been achieved......
Synthesis of titanium oxycarbonitride by carbothermal reduction and nitridation of ilmenite with recycling of polyethylene terephthalate(PET)Eltefat Ahmadi,Ahmad Fauzi,Hashim Hussin,Norlia Baharun,Kamar Shah Ariffin,Sheikh Abdul RezanSchool of Materials & Mineral Resources Engineering,Universiti Sains Malaysia,Engineering Campus摘 要:An innovative......
. CHEN Zhi-guo, JIAN Xiao-long, WU Dong. Research on the recycling of sludge containing heavy metal for the treatment of stainless steel cold-rolling wastewater with acid and chromium[J]. Industrial Water... from spent stainless steel pickling solutions[J]. Resources, Conservation and Recycling, 2012, 60: 72-77. [9] 谢明森, 高远飞, 张晓丽. 不锈钢酸洗废液中金属的综合利用[J]. 广州化工, 2015, 43(9): 109-111. XIE Ming-sen, GAO Yuan-fei......
; 文献标志码:A 文章编号:1672-7207(2011)04-0893-04 Experimental research on recycling of Hg and Cd from waste zinc..., the heating time is 2.5 h; when the temperatures are 350 ℃ for Hg and 725 ℃ for Cd, the recovering rate is up to 95%. Key words: zinc-manganic battery; vacuum metallurgy; mercury; cadmium; recycling......