化学与环境工程毕业设计--开题报告模板(doc22)-工程设计(编辑修改稿)

化学与环境工程毕业设计--开题报告模板(doc22)-工程设计(编辑修改稿)内容摘要：

3。 11 浸取剂性质比较 11 第 5 章 翻译文献 12 做中国最大的管理资料库 — 企业 () I 摘 要 随着市场对硫化锑矿石的需求量越来越大，选矿之后和冶炼后产生的矿渣也越来越多，大多数矿渣随处堆放未作处理和治理，另外矿渣中含有一定的硫磺和贵重金属资源。 传统的土法提取硫工艺以焙烧为基础，具有投资高、周期长、危险性高、操作不便等缺点。 为了处理和解决硫化锑工业生产中日益增长的矿渣治理问题以及回收利用硫磺资源，不断探索和研究新的技术方法已成为亟待开展的研究课题。 本课题立足于国内外提取回收硫磺研究的最新研究成果，改变传统的研究思路，采用浸取结晶的工艺方法。 在对浸取结晶机理进行深入分析的同时， 也对实验影响因素进行了综合研究。 实验中通过对液固比、冷却温度、加热时间、加热温度等条件进行调控，找出了硫磺回收率与各种影响因素的定性和定量关系，以及提取回收的最佳试验条件，并对硫磺进一步纯化和矿渣中贵重金属回收也作了一定的初步研究。 实验结果表明：通过实验影响因素以及正交试验的数据分析，可知液固比是最主要的影响因素；最佳实验条件为：加热浸取温度 150℃、加热时间 15min、冷却温度 0℃、液固比 10： 1（ mL/g），在此实验条件下，可以达到最佳的实验效果，此时浸取精细硫磺的回收率可达 %，浸取剂 I*回 收率为 %；精细硫磺纯度为 ％，平均粒径大小为。 同时还对多级浸取进行了试验研究，多级浸取对浸取剂回收效果基本上没有影响，可以循环利用；同时经过实验测定硫磺的纯度和粒度也基本上没有变化。 实验中得到的精细硫磺成浅黄色，粉末状，有润滑感。 除了对普通硫磺的深度纯化进行理论研究外，论文中还对精细硫磺产品的深度纯化进行了详细研究，并提出了蒸馏的工艺方法。 同时提取硫磺后浓缩的矿渣中含有一定量的铅和锑，为了将金属回收并资源化，本文中提出了采用浮选法，氯化浸出分离铅和锑研究方法。 最后，根据浸取回 收硫磺的实验研究结果，提出了生产精细硫磺的生产工艺；同时还介绍了生产高价值品位的不溶性硫磺的各种生产工艺以及对其优缺点进行比较，并对其工业化展望进行了深入探讨。 关键词： 浸取结晶；精细硫磺；不溶性硫磺；工业化 II Abstract With the greater demand of sulfureted antimony slag for market, the slag was bee more and more after the process of selecting and smelting mine, whereas, the most slag freely placed wasn’t disposed and treated in some degree. Meanwhile, there were some sulphur and valuable metals in the slag. Based on the baking, traditional process for distilling sulphur had many disadvantages, such as high cost, long period, high danger, and dismodious operation. The research and exploration of new technology methods had bee the desiderate project, in order to deal with and settle the problem of progressive slag and sulphur recycling. On the basis of the newest research achievement for reclaiming sulphur at home and abroad, different from traditional research method, leaching ＆ rime method was used in the process. In the paper, leaching ＆ rime principle was analysed indepth, also, influencing factors were studied synthetically. In the experiment, qualitative and quantitative relationship between the recovery yield of sulphur and all kinds of influencing factors and the best experimental conditions for leaching ＆ rime were found by controlling the liquidsolid rate, cooling temperature, heating time and heating temperature, what’s more, primary research on farther purification of sulphur and recycling valuable metals in the slag was made in the paper. 做中国最大的管理资料库 — 企业 () It indicated in the experiment: By analysis of influencing factors and data on orthogonal experiment, liquidsolid rate was dominating in the influencing factors. Under the best experimental conditions of liquidsolid rate 10： 1, heating time 15 minutes, heating temperature 140℃ and cooling temperature 0℃ , more satisfactory results, such as fine sulphur recovery yield %, extraction solvent I* recovery yield %, the sulphur’s granularity microns and the fine sulphur’s purity %, were achieved. At the same time, experimental research on multilevel leaching was made, and it showed that there was little influence on recycling and product character, such as granularity, purity. Fine sulphur got in the experiment was buff, powdered and lubricate. Besides the study on mon sulphur39。 s further purification, distillation method was presented and made further study in order to deeply purify fine sulphur. Meanwhile, there were some lead and antimony pounds in the slag after leaching sulphur, in the interest of recycling and resourcetransfer, floatation method was 做中国最大的管理资料库 — 企业 () III adopted to separate them by chlorination and soaking. Finally, according to the experimental result, the production process flow of fine sulphur was presented。 Meanwhile, all kinds of production processes of insoluble sulphur with high value were introduced, and their advantages and disadvantages were pared in detail, furthermore, the industrialized prospect was deeply discussed. Keywords： Leaching amp。 rime。 Fine sulphur。 Insoluble sulphur。 Industrialisation 从硫化锑矿渣中提取硫实验研究及工业化展望开题报告 1 第 1 章 选题依据 我国工业固体废物每年产生量约 亿 t，排入量约 亿 t，历年累积堆放达 亿 t 左右，工业固体废物的综合利用率只有 45%。 因此，我们对固体废物应该进行妥善处理及合理利用，这样既可消除固体废物的污染危害，又能为社会创造财富，在环境、社会、经济三方面效益兼而得之 [1,2]。 课题来源 硫化锑矿的分布状况 中国 是世界上锑矿资源最丰富的国家之一。 现已探明有储量的矿区 111 处，分布于 18 个省区 [6]。 硫化锑矿的生产及利用现状 硫化锑矿的生产 中国 硫化锑矿 的生产已有近百年的历史， 目前已形成采选冶和加工等较完整的锑 硫化锑矿的利用方式 硫化锑矿的利用主要是通过冶炼制得 锑深加工产品。 硫化锑矿的冶炼方法虽有 接下来讲述一 下辉锑矿氯化浸出反应机理， 在盐酸氯盐介质中，灰锑矿被电氯化浸出时主要发生三种类型的氧化反应 [11~14]： 1. Sb2S3粒子直接在石墨阳极上放电 Sb2S3 6e =2Sb3+ +3S0 E0=。