共查询到19条相似文献,搜索用时 62 毫秒
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镓被列入我国战略储备金属之一,被广泛应用于冶金、化工、电子通信、太阳能电池以及芯片制造等多个领域,因此,镓的需求量正逐年提高。金属镓主要来源于铝工业,由于国内铝土矿中镓含量的逐年下降,铝工业生产的镓资源遇到了瓶颈。粉煤灰是镓的另一个重要来源之一,从粉煤灰中分离提取镓,既可以有效缓解镓资源紧张的压力,也可以提高工业废渣粉煤灰的利用率,大大减少粉煤灰堆存等带来的环境问题。本文介绍了粉煤灰中镓的存在形式,针对粉煤灰中回收提取镓的研究现状进行了态势分析,对镓资源的回收进行了展望。 相似文献
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从粉煤灰中回收镓具有显著的经济价值和环境意义。实验研究了粉煤灰原料的前处理过程并确定了最佳条件和确定了从粉煤灰中实际回收镓的工艺参数。本文对粉煤灰提取镓前期预处理从碱熔炼法和酸浸法进行了试验对比,确定了强碱性熔剂和氧化碱性熔剂的用量,碱熔时间为10 min,温度700-750℃时,浸出率达98.7%。获得了一种新的有应用价值的从粉煤灰中吸附回收镓预处理的工艺方法。 相似文献
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工业设计在工业内窥镜产品中的应用和价值 总被引:1,自引:0,他引:1
介绍了工业内窥镜产品的应用及现状,结合产业链结构研究并引导出工业设计对于工业内窥镜产业发展的价值,并结合多个实例分析了工业设计在工业内窥镜及其周边产品设计中的应用。表述了在当前国内外行业现状下,工业内窥镜企业的产品设计,尤其是工业设计,将对产品的价值品质、市场认知度甚至企业品牌形象起到更加重要的作用。 相似文献
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工业废渣在微晶玻璃中的应用 总被引:1,自引:0,他引:1
就工业废渣微晶玻璃生产原理、生产工艺、应用现状分别从工业化现状和研究现状进行阐述,并根据此类微晶玻璃的主要优点及其应用对这一环保型材料进行展望。 相似文献
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A novel extractant mixture, di-2-ethylhexyl phosphate (DEHPA) plus HX, was proposed and tested for recovering gallium from sulfate solution. It was found that the extraction capacity of DEPHA for gallium from sulfate solution could be enhanced significantly due to the synergistic effect of acidic extractant HX. Gallium extraction is negligible below pH 0 and highly sensitive to pH of aqueous phase in the range from 0 to 1, and satisfactory extraction can be gained at pH>1. More than 96% Ga extraction was obtained using 15% DEHPA plus 2% HX. Although Fe (Ⅲ) was found to be extracted preferentially to Ga (Ⅲ), effective extraction of Ga (Ⅲ) was possible by reducing ferric to the ferrous state prior to extraction. A loaded organic phase containing 0.48g L-1 Ga could be produced from solution of 0.12g L-1 Ga at A/O ratio of 4 : 1 via three mixer-settler operation stages. Gallium was stripped quantitatively from the loaded organic phase with l,5mol L-1 of sulfuric acid. 相似文献
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A novel extractant mixture, di-2-ethylhexyl phosphate (DEHPA) plus HX, was proposed and tested for recovering gallium from sulfate solution. It was found that the extraction capacity of DEPHA for gallium from sulfate solution could be enhanced significantly due to the synergistic effect of acidic extractant HX. Gallium extraction is negligible below pH 0 and highly sensitive to pH of aqueous phase in the range from 0 to 1, and satisfactory extraction can be gained at pH>1. More than 96% Ga extraction was obtained using 15% DEHPA plus 2% HX. Although Fe (Ⅲ) was found to be extracted preferentially to Ga (Ⅲ), effective extraction of Ga (Ⅲ) was possible by reducing ferric to the ferrous state prior to extraction. A loaded organic phase containing 0.48g. L-1 Ga could be produced from solution of 0.12g@L-1 Ga at A/O ratio of 4: 1 via three mixer-settler operation stages.Gallium was stripped quantitatively from the loaded organic phase with 1.5 mol@L-1 of sulfuric acid. 相似文献
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超临界CO_2萃取技术的工业应用 总被引:1,自引:0,他引:1
详细论述了超临界CO_2萃取技术在工业应用过程中遇到的工艺流程、装置设计与转产、能耗与安全等若干问题,提出了超临界CO_2萃取的工业化应用设计的总体要求。 相似文献
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2008年以来,梧州市抓住东部陶瓷产业向西部转移的契机,依托丰富的高岭土资源,大力发展建筑陶瓷,目前已经培育规模以上陶瓷企业14家。建筑陶瓷属于高污染、高耗能、高排放产业,在经济发展步入新常态下,提升陶瓷产业附加值是梧州面临的迫切课题。本文基于梧州人工氧化锆宝石的发展基础,通过分析氧化锆陶瓷的最新进展,提出梧州市基于氧化锆升级陶瓷产业的相关建议。 相似文献
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《分离科学与技术》2012,47(13-15):1641-1653
Abstract The U.S. Bureau of Mines investigated solvent extraction methods for recovering gallium from sulfuric acid leach filtrates produced from hydrometallurgical zinc residues. These filtrates typically had pH values of 0 to 0.5, too low for effective gallium recovery by traditional extractants. Of the nine extractants tested, octylphenyl acid phosphate (OPAP) was the most effective. Gallium stripping was accomplished using a 1.5 M-H2SO4 liquor. A continuous solvent extraction system was designed and operated for 32.4 hr, treating a 0.32 g/L Ga and 20 g/L Fe filtrate. Overall gallium recovery in the system was 94%. 相似文献
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介绍了环丁砜抽提蒸馏制苯工艺在中国石油化工股份有限公司洛阳分公司芳烃装置二期扩能中的工业应用.结果表明,产品质量、收率均达到要求.与传统的液-液抽提法相比,不仅节省投资,而且降低了能耗. 相似文献