共查询到19条相似文献,搜索用时 112 毫秒
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从含镍废料中提取高纯镍化合物的研究 总被引:2,自引:0,他引:2
研究了以含镍的废碳酸盐为原料,制取高纯镍化合物的工艺条件。该工艺对原料的适应性强,除杂效果好,镍的回收率达92%以上,产品质量达国标或企标。 相似文献
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介绍了一种电解法制三氟化氮过程中含镍废电解质的处理工艺。实验制得NiCO3平均质量分数达98.48%,镍的平均回收率达96.93%。 相似文献
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从含镍废渣中回收制备高纯镍化合物的研究 总被引:2,自引:0,他引:2
研究了以含镍的废硫酸盐为原料,制取高纯镍化合物的工艺条件。该工艺对原料的适应性强,除杂效果好,镍的回收率达93%以上,产品质量达国标或企标,经济效益显著。 相似文献
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研究了以从工厂含镍废液中回收的硫化镍为原料,试验从酸浸出,除杂净化和沉镍等方面制取镍盐的工艺过程和最佳条件。由本工艺可以生产出高含量镍的镍盐,其品位符合国家或企业标准,废镍的回收率达91%以上。 相似文献
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用混酸浸取铁红废渣生产复合离子聚铁,并回收渣中镍铜。实验结果表明:聚铁产品质量稳定,镍铜回收率达99%以上。 相似文献
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废镍触媒的综合利用工艺研究 总被引:5,自引:2,他引:3
扼要介绍了工业废镍催化剂的综合利用工艺研究。对其主成分Ni和Al均加以回收利用,分别制取结晶硫酸镍、氢氧化铝及氧化铝。产品质量达国家工业标准。Ni回收率高达90%。 相似文献
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采用灼烧法预处理、丁二酮肟重量分析法来测定载镍碳纳米管的载镍量,获得稳定而准确的分析结果。结果表明,制备载镍碳纳米管催化剂时所加入的镍并不全部吸附在碳纳米管上;载镍效率随着碳纳米管载镍量的增加而降低。 相似文献
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癸二睛加氢制癸二胺骨架镍催化剂的研究 总被引:3,自引:0,他引:3
本文介绍了癸二脯加氢制癸二胺用骨架镍催化剂的制备方法、活化条件,以及反应温度、压力、接触时间等因素对转化率的影响,揭示了骨架镍催化剂的反应特性和用于癸二脑加氮的最佳操作条件。 相似文献
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S. Kelebek P. A. Distin 《Journal of chemical technology and biotechnology (Oxford, Oxfordshire : 1986)》1989,44(4):309-326
Nickel extraction from an uncrushed spent nickel-tungsten catalyst was studied using sulphuric acid leaching in a column. The effects of flowrate, temperature and acid concentration on the cumulative nickel recovery was investigated using a three-variable, two-level factorial design. Statistical analysis indicated that among these variables only acid concentration was significant (at the 95% confidence level) in the ranges investigated. The catalyst can be leached either by a two-step process or in a single step following catalyst preoxidation. In either case extractions exceeding 95% can be obtained. With oxidized samples, single-step acid leaching at 82°C yielded significantly better nickel extraction than at 95°C. This was attributed mainly to tungstic acid precipitation in the catalyst pellets, an effect which occurs rapidly at 95°C and retards the leaching of nickel. Nickel extraction was also suppressed following preoxidation at over 300°C. This was thought to be due to formation of slow-leaching nickel oxide-tungstate. Following preoxidation at the optimum of 300°C, 97% of the nickel could be leached in 4 h at 82°C using (by volume) 3% sulphuric acid and 0.6% nitric acid flowing at 1.5 litres/h. About 70% of the nickel could be extracted from preoxidized catalyst using only water for 40 h at room temperature. These findings are incorporated in a simple proposed flowsheet. 相似文献