高纯碳酸锂绿色制备方法的研究.doc

摘要 PAGE IV PAGE II 高纯碳酸锂绿色制备方法的研究 摘 要 本文简要介绍了高纯碳酸锂工业应用以及目前的研究状况，分别通过苟化法、盐酸法、结晶法制备高纯度碳酸锂，然后分别对制备高纯度碳酸锂进行纯度分析，验证所利用的方法制备的碳酸锂是否符合要求（99.9%以上），以及对三种制备高纯度碳酸锂的工艺进行环保分析。最后通过研究分析得出：通过苟化法制备的碳酸锂不能达到高纯（99.9%以上）的要求，而盐酸法和结晶法符合要求，苟化法和盐酸法的生产工艺不符合环保要求，而结晶法符合环保的要求。最总经过比较得出结论：结晶法生产成本低，废液可以循环利用，符合清洁生产的和要求，并且生产易实现工业化，是制备高纯碳酸锂的优良方法。 关键词：高纯碳酸锂，重结晶法，盐酸法，苟化法，环保分析 THE STUDY OF PREPARATION OF HIGH PURITY LITHIUM CARBONATE GREEN MRTHOD ABSTRACT This paper briefly introduces the application and research status of high purity lithium carbonate industry, recrystallization method, the hydrochloric acid method was studied, respectively, if the preparation of high purity lithium carbonate, through these three methods experiment preparation of high purity lithium carbonate, and purity of samples, respectively, for the preparation of high purity lithium carbonate for purity analysis, as well as to the three kinds of preparation technology for environmental analysis. Also focus on the influence of recrystallization experiment preparation of high purity lithium carbonate, lithium carbonate crystallization process was analyzed, the degree of supersaturation of lithium carbonate with mass concentration and temperature, the crystal nucleus growth and grain growth speed, the influence of temperature on the crystallization process of lithium carbonate, put forward the recrystallization process conditions of preparation of high purity lithium carbonate, and make full use of waste liquid preparation of high purity lithium carbonate. By comparing conclusion: recrystallization method, production cost is low, waste can be recycled, easy to realize industrialization production, is a good method of preparation of high purity lithium carbonate. KEY WORDS: high purity lithium carbonate, heavy crystallization, hydrochloric acid method, method of environmental analysis 前言 目　录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc357886004 前　言 PAGEREF _Toc357886004 \h 1 HYPERLINK \l _Toc357886005 第1章 绪论 PAGEREF _T