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<正>广州铜材厂有限公司(以下简称广铜公司)是广州钢铁企业集团、广州有色金属集团属下支柱企业之一,是一家具有73年有色金属冶炼及压延加工历史的国有大型有色金属企业。因落实广州市委、市政府"退二 相似文献
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浙江省的余姚市长振铜业有限公司是以回收国内外废旧黄杂铜为主要原料,生产黄铜、铅黄铜型材的民营企业,隶属有色金属冶炼及压延加工行业. 相似文献
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沈守稳 《有色金属再生与利用》2006,(5):42-43
浙江省的余姚市长振铜业有限公司是以回收国内外废旧黄杂铜为主要原料,生产黄铜、铅黄铜型材的民营企业,隶属有色金属冶炼及压延加工行业。 相似文献
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企业经营与加快资本周转速度 总被引:1,自引:0,他引:1
一、我国有色金属工业企业资本周转的现状 加快资本周转速度是市场经济对企业经营的基本要求。而近些年来,我国有色金属工业企业特别是国有企业的资本周转却表现出相反的趋势。 1.流动资本的周转 1997年与1991年相比,采选企业和冶炼及压延加工企业流动资本由年周转2.72次和2.61次降至1.89次和1.55次,周转一次耗时由134、140天延至193、235天。同期内,国有企业流动资本周转一次费时 相似文献
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能效对标是指企业为提高能效水平,与国际或国内同行业先进企业能效指标进行对比分析,确定标杆,通过管理和技术措施,达到标杆或更高能效水平的节能实践活动.电解铝行业是有色金属重点耗能行业之一,本文论述了能效对标在铝电解节能减排中的重要作用. 相似文献
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叙述了有色金属工业和科技面临的挑战与展望,介绍了有色金属硫化矿物的电位调控浮选技术,铜矿和金矿的生物浸出技术、水硬铝石型铝土矿的选矿脱硅(生产氧化铝的技术创新)。 相似文献
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Productivity research group of China National Nonferrous Metals Industry Corportation 《中国有色金属学会会刊》1993,(1)
The productivity of China's nonferrous metals industry during 1980-1990 has been analysed. The important factors which constrain the productivity of the nonferrous metals industry have been studied, the methods of improving the productivity of the nonferrous metals industry have been discussed. 相似文献
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R. B. Toombs 《JOM Journal of the Minerals, Metals and Materials Society》1964,16(7):569-576
The national and international importance of Canada’s minerals and metals producing industry is reported. The growth of the Canadian industry is traced from 1945, through the period of rapid development of the early 1950’s, to the consolidation and expansion activities of the late 1950’s and early 1960’s. Mineral production in Canada during 1963—including steel, nonferrous metals, and fuels —is reported. It is estimated that by 1970 the Canadian industry will produce $3.9 billion worth of metals, nonmetals, and fuels. 相似文献
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Various economic and political factors have induced dramatic changes in nonferrous extractive industries. Accordingly, the marketing of research proposals has forced researchers to focus on new goals, which include cost reduction, substitute materials, new processing technologies and environmental issues. From this perspective, it is especially difficult to justify research in thermodynamics and the kinetics of reactions. However, investigations into mathematical modeling as it is linked to process engineering are very active. Further, hydrometallurgy is moving from “metal farming” to high productivity; in pyrometallurgy, new industrial processes have appeared which possess improved energy efficiency and better environmental control, particularly in the area of sulfide smelting. 相似文献
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研究的主要目的在于检验有色金属期货价格波动是否能够预测中国股票市场收益。以2004年至2011年为样本区间,通过实证分析发现铜和铝的价格波动率均能较好地预测不同时间区间的股票收益,这种预测能力在样本内和样本外预测中均存在,其中铜价波动率比铝价波动率的预测能力更强。实证结果的稳健性并不受变量的不同测度以及计量经济学估计方法的影响。在多元回归分析中控制一些主要的宏观预测因子之后,铜价与铝价波动率的预测能力有所下降,但在不同的预测区间仍然表现出统计意义上的显著性。本结论成立依赖于所选取的研究样本区间,故此我们认为金属价格波动率对股市的预测能力可能由近期的商品金融化所导致。 相似文献
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Jacob Wood Joey Hoang Stephen Hughes 《JOM Journal of the Minerals, Metals and Materials Society》2017,69(6):1013-1020
The global, non-ferrous smelting industry has witnessed the continual development and evolution of processing technologies in a bid to reduce operating costs and improve the safety and environmental performance of processing plants. This is particularly true in the copper industry, which has seen a number of bath smelting technologies developed and implemented during the past 30 years. The Outotec® Ausmelt Top Submerged Lance Process is one such example, which has been widely adopted in the modernisation of copper processing facilities in China and Russia. Despite improvements in the energy efficiency of modern copper smelting and converting technologies, additional innovation and development is required to further reduce energy consumption, whilst still complying with stringent environmental regulations. In response to this challenge, the Ausmelt Process has undergone significant change and improvement over the course of its history, in an effort to improve its overall competitiveness, particularly with respect to energy efficiency and operating costs. This paper covers a number of recent advances to the technology and highlights the impacts of these developments in reducing energy consumptions for a range of different copper flowsheets. It also compares the energy efficiency of the Ausmelt Process against the Bottom Blown Smelting process, which has become widely adopted in China over the past 5–10 years. 相似文献
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砷作为有色金属矿物的共伴生元素,在有色金属冶炼过程中以含砷“三废”形式大量产出。由于砷具有强致癌性及毒性,导致砷的安全处置问题严重困扰着有色金属冶炼企业。本文通过阐述含砷废水中砷的两种稳定化工艺的研究进展,对比了现有稳定化工艺的优缺点,结合药剂稳定化和矿物稳定化的优点,借鉴砷元素在地球化学中的成矿规律,提出了硫化沉砷?水热还原矿化稳定砷的技术思路。首先采用硫化法脱除含砷废水中的砷,砷的沉淀率高达99.65%,硫化沉淀物在TCLP毒性检测中砷的浓度达到212.9 mg/L。然后采用As-S系一元水热还原矿化法和As-Fe-S系二元水热还原矿化方法稳定砷,稳定化产物分别为雌黄和雌黄?铁硫系(黄铁矿、硫化亚铁)混合物,在TCLP毒性检测中砷的浸出浓度分别为3.86 mg/L和2.65 mg/L。水热还原矿化工艺实现了含砷废水中砷的脱除及稳定化的目的,为水溶液中砷的脱除和稳定化提供了新的思路。 相似文献