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1、 硼铁矿火法分离工艺环境评价Paigeite Ore Thermo Metallurgical Separation Environmental Assessment毕业设计（论文）任务书毕业设计（论文）题目：硼铁矿火法分离工艺环境评价基本内容：1.绪论，简述硼铁矿的综合利用现状，硼铁矿综合利用的背景。2.生命周期评价方法和物质流分析法，相关介绍和发展方向。3.硼铁矿火法分离技术工艺流程，产生的污染物等相关物质流分析。4.硼铁矿火法分离的生命周期评价，包括能源排放，污染物排放，产物。5.结论，对于硼铁矿火法分离工艺评价的结果。毕业设计（论文）专题部分：题目： 基本内容：学生接受毕业设计（论文）
2、题目日期第周指导教师签字：年月日 硼铁矿火法分离工艺环境评价摘要辽东地区硼铁矿储量达2. 8亿t，占我国硼矿资源的58%，其中B2O3储量为2184万t，属于大型硼矿。但是其结构复杂，共生矿物多，常规分离方法困难。由于高品位的硼镁矿资源已接近枯竭，硼铁矿资源的开发利用对于缓解我国硼资源紧张有重要的现实意义。硼铁矿火法分离工艺体现了以提硼为主，其他元素铁、镁综合开发和利用率高等特点，是综合开发和充分利用大型低品位硼铁矿的最佳技术路线。矿产资源开发引起的生态环境问题是环境保护工作中一个突出的问题。本文在硼铁矿没有实际开发之前，用生命周期评价法和物质流分析法对火法分离开发方案进行系统、全面的环境影响
3、分析，有利于企业或技术研发机构对开发方案进行选择、优化和改进，避免或减轻开发导致的资源浪费及环境问题，从而为硼铁矿科学、合理的开发提供参考依据。本文得到以下结论：(1)开采加工1万t硼铁矿产生的对不可再生资源消耗的影响为7.87kgSb当量；全球变暖的影响为1.59107kgCO2当量；对酸化效应的环境影响为3.95104kgSO2当量；对光化学烟雾的环境影响为1.95103kg乙烯当量；对人体健康的环境影响为3.04104kg1,4-二氯苯当量；对土地资源占用为7.59106kg。(2)工艺生产过程的不可再生资源消耗远远高于能源带入量；对温室效应的影响，能源带入量和生产产生量相同；对酸化效应
4、、光化学烟雾、人体健康的影响均是能源生产过程带入量高于工艺生产阶段带入量。(3)原材料生产阶段对土地资源占用的影响最大，对矿物资源消耗的影响较少；高炉冶炼阶段在化石能源消耗和温室效应这两类环境影响中占的比例最大。对于酸化效应、光化学烟雾和人体健康损害，三个工艺生产阶段的贡献率相差不大；硼砂制造阶段对矿物资源消耗影响最大，对土地资源利用也产生较大影响。关键字:硼铁矿，火法分离，环境评价，生命周期评价 III Paigeite Ore Thermo Metallurgical Separation Environmental AssessmentAbstractThere is 280,000,0
5、00 t paigeite ore in eastern Liaoning, accounting for 58% of our boron resources. But because of its complex structure, conventional separation is difficult. Therefore, the using of paigeite ore has great significance to China. The thermo metallurgical separation technologies to enhance boron reflec
6、ts mainly the other elements of iron, magnesium and comprehensive development and utilization of advanced features, is a comprehensive development and full use of large low-grade paigeite ore the best technology route. Development of mineral resources and ecological environment in environmental prot
7、ection issues are a prominent problem. In this paper, before no real development in the paigeite ore ,using Life Cycle Assessment method and Substance Flow Analysis on the thermo metallurgical separation system development program to have a comprehensive environmental impact analysis, which can help
8、 business or technical program have a selection on the development, optimize it, and improve it. It also can help avoid or reduce the waste of resources and environmental issues of development, so as to provide reference to scientific and reasonable development of paigeite ore. This article conclude
9、s following conclusions:(1) Mining and processing 10 000 t paigeite ore produce on non-renewable resource consumption of the 7.87kg Sb equivalent; global warming equivalent to 1.59 107kgCO2; on the environmental impact of acidification effects equivalent to 3.95 104kgSO2; of the photochemical smog e
10、nvironmental impact equivalent to 1.95 103kg ethylene equivalent; environmental impacts on human health was 3.04 104kg1, 4 - dichlorobenzene equivalent; on land occupation for the 7.59 106kg.(2) The production process of non-renewable resource consumption is much higher than the amount of energy int
11、o; on the greenhouse effect, energy into the same volume and production output; effect on acidification, photochemical smog, human health are the energy production process technology into the production stage higher than the amount brought into.(3) Raw material production stage, the land occupied by
12、 the greatest impact on the consumption of mineral resources and less; blast furnace smelting stage in fossil energy consumption and environmental impact of the greenhouse effect in these two categories accounted for the largest share. The acidification effect, photochemical smog and human health da
13、mage, the three process stages of production less the same contribution rate; borax manufacturing stage of consumption of mineral resources the greatest impact on land use also have a great impact.Keywords: paigeite ore, fire separation, environmental assessment, life cycle assessment 目录摘要IAbstractI
14、I第一章 绪论11.1 研究背景11.1.1硼资源现状11.1.2生产技术工艺现状21.1.3 存在的主要问题41.1.4 硼行业发展趋势51.2 生命周期的起源与发展51.2.1生命周期的起源51.2.2 生命周期的研究进展61.3本论文的研究目的、研究内容及技术路线81.3.1 论文的研究目的、意义81.3.2论文研究内容81.3.3技术路线8第二章 研究方法102.1生命周期评价法102.1.1 生命周期评价的定义102.1.2 生命周期评价的技术框架102.1.3生命周期评价的应用122.2 物质流分析122.2.1物质流分析的定义122.2.2物质流分析的系统边界122.2.4物质流
15、分析的基本框架132.2.5物质流分析的基本模型132.2.2物质流分析的研究进展14第三章 硼铁矿火法分离工艺流程153.1 硼铁矿火法分离工艺的起源153.2 硼铁矿火法分离工艺流程153.2.1采选矿阶段163.2.2高炉分离阶段173.2.3硼砂生产阶段183.4硼铁矿火法分离工艺特点193.5国内外同类技术比较193.6 作用意义203.7推广应用20第四章 硼铁矿火法分离工艺生命周期评价214.1目标与范围的确定214. 2 生命周期清单分析214.2.1物质和能源输入清单214.2.2污染物排放的计算224.2.3 污染物排放清单254.3 物质流图264.4 生命周期影响评价274.5 生命周期解释28第五章 结论与展望315.1 研究结论315.2 研究展望31参考文献32致谢36附录37外文原文:37中文翻译5589 第一章 绪论1
