Extraction et purification durable du lithium à partir du spodumène

持久锂的提取和纯化 àpartir du spodumène

• 批准号: 533857-2018
• 负责人: Blais, JeanFrançois
• 金额: $ 18.58万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=694689
• 关键词: Extraction; et; purification; durable; du

The Corporation Nemaska Lithium Inc. (NMX) has developed an innovative process to produce lithium hydroxide and lithium carbonate from spodumene ore. The processing plant under construction in Shawinigan (QC, Canada) will produce around 205 000 tonnes per year of solid by-products (mainly aluminosilicates), in addition to liquid effluents. In order to respect their commitment to sustainable and green technology development, NMX has invested in several areas of research and development to identify various markets for its by-products, in particular the production of zeolites, of concrete and asphalt for road infrastructure, as well as lithium glass and vitroceramics. In addition to continuing along these lines of research, the proposed project will improve NMX's process of lithium purification by estimating the impact of the variable composition of the spodumene ore on the composition of the produced by-products and their industrial valorization, reducing the production of residual sludge waste, and developing methods to treat and re-circulate process waters. The synergy created by the cooperation of NMX and specialists from INRS, Laval University, COREM, CTMP, UQAT and ÉTS, will enable the completion of the proposed research and development project, which is of great importance to the Canadian mining industry. The valorization of the aluminosilicate by-product, will also allow NMX to lessen its environmental impact by reducing the amount of waste destined for burial. Furthermore, the application of the by-product locally would not only help to develop the local economy, but also reduce CO2 emissions related to the transport and importation of foreign products. The proposed project will ultimately support the research activities of four PhD students, two MSc students, nine undergraduate students and several college students.

Nemaska Lithium Inc.(NMX)公司开发了一种从锂辉石矿石中生产氢氧化锂和碳酸锂的创新工艺。位于加拿大昆士兰州Shawinigan的在建加工厂每年将产生约20.5万吨固体副产品(主要是铝硅酸盐)，此外还将产生液体废水。为了尊重他们对可持续和绿色技术发展的承诺，NMX在几个研究和开发领域进行了投资，以确定其副产品的各种市场，特别是生产沸石、用于道路基础设施的混凝土和沥青以及锂玻璃和玻璃陶瓷。除了继续沿着这些研究路线进行研究外，拟议的项目还将通过评估锂辉石矿石的不同组成对所产生副产品的组成及其工业价态的影响，减少剩余污泥废物的产生，以及开发处理和再循环工艺水的方法，来改进NMX的锂提纯工艺。NMX与来自INRS、拉瓦尔大学、Corem、CTMP、UQAT和ETS的专家合作产生的协同效应将使拟议的研发项目得以完成，该项目对加拿大采矿业非常重要。铝硅酸盐副产品的有价化还将使NMX减少用于埋葬的废物量，从而减少对环境的影响。此外，副产品在当地的应用不仅有助于发展当地经济，还可以减少与运输和进口外国产品有关的二氧化碳排放。拟议的项目最终将支持四名博士生、两名硕士学生、九名本科生和几名大学生的研究活动。