共查询到20条相似文献,搜索用时 93 毫秒
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一、发明范围本发明涉及从含贵金属的矿物中回收贵金属,特别是从低品位矿中回收金、银的方法。本发明所述的是回收贵金属的高效、安全浸出的改进方法。二、发明摘要本发明所述的改进浸出法,其特征是用硫脲化合物、尿素和木质磺酸钾组成一种浸出液,把含贵金属的矿石与上述浸出液接触,然后从浸出液中回收已溶解的贵金属。其回收办法可用任何熟知的工艺,例如把含有溶解了贵金属的浸出液引入填料提取塔,目的是将溶液中的贵金属分开,并使之沉淀于填料床上,于是从料床上将其回收。 相似文献
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阐明了贵金属二次资源的回收利用的意义以及废料的主要来源,对贵金属二次资源的预处理方法以及金银铂钯等贵金属的回收利用方法等进行阐述,比较了目前国内外贵金属二次资源回收贵金属的处理技术,分析了相关行业存在的问题,并对贵金属二次资源的回收利用进行了展望。 相似文献
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感光废液中银综合回收方法 总被引:2,自引:0,他引:2
周清 《有色冶金设计与研究》2009,30(6):22-23
废定影液中含有大量的贵金属银,回收其中的银不仅可以避免环境污染,而且可以节约资源,具有重要的经济价值。本文介绍了几种不同的银回收方法,简要论述了各种方法的优缺点。并指出电解法将广泛应用于回收废定影液中的银。 相似文献
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胡志鹏 《有色金属材料与工程》2004,25(2):83-86
分析了贵金属回收利用具有良好的经济效益,国内外对这项工作极为重视,并取得了佳绩。同时,总结了废旧贵金属的主要来源,以及回收新技术。指出,我国废旧贵金属回收体系不够健全,亟待政策扶持。 相似文献
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T. M. Buslaeva E. A. Krylova E. V. Volchkova S. P. Gromov N. I. Sidorenko 《Russian Journal of Non-Ferrous Metals》2008,49(6):459-465
This is analytical article devoted to the extraction of noble metals by acyclic analogs of crown ethers (podands) covering the period from 1980 to 2007. Most attention is given to the extraction of noble metals by phosphoryl-containing podands from hydrochloric acid solutions. The efficiency of extraction depends mostly on the number and nature of donor centers in a reagent molecule. It is shown that the use of podands as noble metal extractants does not help to solve the problem of selective separation of noble metals from complex solutions. 相似文献
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MB黄药经小型试验对比乙丁黄药,在生产中试用,提高了铅锌精矿质量和铅锌金属回收率,强化了贵重金属的回收,经济效益显著,值得进一步推广应用。 相似文献
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以2008年云南省材料工作者所发表的文献为依据,对黑色金属、有色金属、稀贵金属和陶瓷材料进行评述。 相似文献
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以2010年云南省金属材料科研工作者所发表的文献为依据,对金属材料科学的文献综述、基础理论研究、黑色金属、有色金属、稀贵金属和其它材料进行了评述。 相似文献
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以2011年云南省材料科研工作者所发表的文献为依据,对材料科学的文献综述、基础理论研究、黑色金属、有色金属、稀贵金属和其它材料进行了评述。 相似文献
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T. M. Buslaeva E. A. Krylova E. V. Volchkova S. P. Gromov N. I. Sidorenko 《Russian Journal of Non-Ferrous Metals》2010,51(6):457-466
The third and final part of a review on the extraction of noble metals by macrocyclic compounds, which is devoted to extraction
with O-, S-, and N-containing calyxarenes with a generalization of References from 1978 to 2008, is presented. it is noted
that no systematic investigations on the extraction of noble metals with calixarenes has been performed until now. most works
are qualitative and do not consider the regularities of the influence of the compositions of aqueous and organic phases and
the properties of the extractant on the degree of metal extraction. the studied solutions are unlike production ones in regards
to composition, and the chemical state of extracted ions in aqueous solutions is not always taken into account. it is emphasized
that there is only fragmentary information on reextraction in the literature. the problem of the selectivity of extraction
of noble metals with calixarene esters is discussed. 相似文献
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Dissolution mechanisms of noble metals in aqueous solutions of sodium thiosulfate, sodium sulfite, and their mixture under
standard conditions (without heating the medium) in alkali and acidic media are described. The conditions of intensifying
the dissolution process are evaluated. The reaction rates are investigated. Based on the obtained data, it is concluded that
it is rational to apply the sulfite-thiosulfate solvents of noble metals to recover them from concentrates under the usual
conditions. 相似文献