共查询到20条相似文献,搜索用时 218 毫秒
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欧盟27国的钢铁联合企业拥有现代化的工艺装备,生产多品种的优质钢材。高炉-转炉流程仍将保持统治地位。钢铁厂环境排放的控制主要涉及粉尘、SO2、NOx、二恶英和其他污染物,其焦点之一是CO2排放和碳排放交易。对减排CO2的炼铁新工艺作了概述。德国钢铁工业向政府作出承诺:同1990年相比,2012年吨钢CO2排放削减22%。 相似文献
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Life Cycle Assessment of Internal Recycling Options of Steel Slag in Chinese Iron and Steel Industry 总被引:1,自引:0,他引:1
The internal recycling process of BOF slag which is one of the huge solid wastes from iron and steel industry was emphasized. Based on the four scenarios of different internal recycling strategies for BOF slag, life cycle assessment (LCA) as a valuable tool for industrial solid waste management was applied to analyze the contribution to reducing environmental impacts and resources burdens for each scenario. The global warming potential (GWP) results of the four scenarios show that the scenario which performs best in carbon reduction cuts off 14.2% of GWP impacts of the worst scenario. The results of this study show that the optimized internal recycling process of BOF slag can improve the environmental performance of crude steel. It is important to assess and choose an appropriate strategy to recycle BOF slag from LCA perspective to reduce the environmental impacts and resource burdens as much as possible. 相似文献
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林岚 《有色冶金设计与研究》2005,26(2):12-15
简单介绍了ISP铅锌冶炼工艺,分析了ISP原燃料成本状况及该原燃料条件下对工艺过程的影响,提出了提高ISP铅锌冶炼原燃料经济性的途径及相应的工艺措施。 相似文献
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Suresh K. Gupta 《Metallurgical and Materials Transactions B》1990,21(5):867-872
A new concept has been developed for the production of zinc from zinc and complex zinc concentrates. It is a two-stage process
involving oxidation of zinc sulfide to oxide and dissolution into slag and the fuming of zinc from the slag by injecting carbonaceous
materials into it to produce zinc vapors which can be subsequently condensed in a lead-splash condenser such as those used
in the Imperial Smelting Process (ISP). In this paper, the effects of the quantity of air, temperature, and concentrate feed
rate have been discussed on the production of zinc-rich slag, which is the first stage of the proposed process. 相似文献
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以铜尾矿为研究对象,运用生命周期评价(LCA)法对铜尾矿堆存以及3种铜尾矿资源化利用方法的环境影响进行比较.结果表明,处理1t的铜尾矿,方案1:堆存,对环境的主要影响为生态毒性(ET:7.05×10-1)和人体毒性(HT:1.467×10-7);方案2:铜尾矿代替水泥熟料中的黏土,主要环境影响类型初级能源消耗(PED)... 相似文献
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ISP作为不同于单纯的炼铅、炼锌这样一种冶炼工艺,从它问世以来至今还没有一种新的方法能取代它或者说还没有一种新的冶炼工艺具有相同或是相近的功能。作者在本文中所探讨的是用一种较成熟的设备替代ISP冶炼工艺中效率低、污染严重的部分而保留其核心部分的可行性。 相似文献
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基于ISP炼锌工艺中浸没冷却溜槽余热回收存在的问题,以150 kt/a ISP炼锌项目为例,介绍了浸没冷却溜槽余热锅炉的结构,由浸没式冷却器、汽包、上升管、下降管、冷却器提升机构等组成,并详细分析了受热件浸没式冷却器的换热箱设计、换热箱壳体防腐绝缘层的涂抹和低熔点合金融液的选择。 相似文献
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通过对采用ISP工艺冶炼铅锌的冶炼厂周边土壤中的铜、铅、锌进行取样分析,得到土壤中铜、铅、锌的分布规律。结果表明,进入环境中铅的污染物形式是铅烟,产生的环节主要有铅熔炼、烟化等,铅以铅精矿形式进入环境的可能性较小。 相似文献
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N Kaneda K Hikita Y Naruse T Fukuo K Matsubara T Nagatsu 《Canadian Metallurgical Quarterly》1998,249(2):405-409
Rabbit (Oryctolagus cuniculus) red cell and tissue acid phosphatases were studied by means of horizontal starch gel electrophoresis and isoelectric focusing followed by enzyme blotting. Red cell acid phosphatase 1 (ACP1) is monomorphic while tissue acid phosphatase 2 (ACP2) is polymorphic in a wild rabbit population, with two alleles: ACP2*1 (0.96) and ACP2*2 (0.04). A third locus homologous of human acid phosphatase 3 (ACP3) is characterized by the presence of three alleles (ACP3*1, ACP3*2 and ACP3*3). ACP3*1 is the most common allele and was detected in all populations, ACP3*2 was found in domestic breeds and in a wild population from Southern France, whereas ACP3*3 is typical of Portuguese wild rabbits. The geographical distribution of ACP3*2 and ACP3*3 is in agreement with the subspecific level of differentiation of the rabbit species in O. cuniculus cuniculus and O. c. algirus. The comparative study of the acid phosphatase activity in red cells of several mammalian species, including humans, suggests that ACP3 activity in erythrocytes exists only in rabbit. 相似文献
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采用改进化学顺序提取(BCR)法提取铅锌尾矿样品中铜、铅、锌、镉和镍等重金属元素的可交换态(F1)、可还原态(F2)、可氧化态(F3)和残渣态(F4)四种形态,利用电感耦合等离子体质谱法(ICP-MS)测定了铅锌尾矿中铜、铅、锌、镉和镍的各元素总量及各元素不同形态含量。研究结果表明:各元素不同形态的方法检出限在0.012~0.85 mg/kg之间,测定结果的相对标准偏差(RSD,n=5)在2.1%~9.9%之间;各元素所有形态量的总和与各元素测得总量的比值在88.1%~101.2%之间。这说明实验所用的形态分析方法适用于铅锌尾矿中铜、铅、锌、镉和镍的形态分析。采用实验方法对3个铅锌尾矿样品进行分析测定,结果表明铜、铅、锌、镉和镍的化学形态中残渣态含量最大,占各元素总量的30%及以上;铅和锌含量分布从高到低的顺序依次为F4、F2、F1、F3,铜和镍为F4、F3、F2、F1,镉为F4、F1、F3、F2。实验方法可为铅锌尾矿区中重金属元素的综合利用、环境影响评价及环境治理提供重要参考信息。 相似文献