Towards Environmentally Benign Pyrometallurgical Processes

迈向环境友好的火法冶金工艺

• 批准号: 5744-2012
• 负责人: Pickles, Christopher
• 金额: $ 1.46万
• 依托单位: Queen's University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=509744
• 关键词: Towards; Environmentally; Benign; Pyrometallurgical; Processes

In the past, improvements to the current extraction methods and the development of new metal extraction processes were determined by both technical and economic factors. More recently, environmental factors have become another significant feature in determining the viability of a process. In this regard, for the research program described in this proposal, the major objective is to develop metal extraction processes that have less of an impact on the environment. In mineral and metal extraction processes, some of the major sources of energy remain carbonaceous or hydrocarbon-based. Ultimately, the carbon in these materials is converted into carbon dioxide and this contributes to global warming. To address this issue, a major focus of the work will be to investigate microwave processing techniques. The electrical energy utilized in these microwave processes can be relatively clean and also there are other potential advantages such as reduced gas throughputs and dust production. The field of microwave processing of minerals continues to expand and considerable progress has been made in understanding this complex technology and its application to extractive metallurgy. Currently, pyrometallurgical metal extraction is being somewhat displaced by hydrometallurgical processes, at least in part because hydrometallurgy is more environmentally friendly. The proposed research addresses this issue and could lead to greener pyrometallurgical processes and also builds on over ten years' experience in this new research field in metal extraction. Over the next five years, the research will focus on three potential microwave applications as follows: (1) microwave fragmentation studies, (2) microwave pyrovacuum processing and (3) microwave processing of coal. In addition, to the investigation of the proposed applications in this research program, information will be generated which can help define other potential applications. Furthermore, we will continue to determine the permittivities of the ores, concentrates and minerals of interest and ultimately produce a publishable compilation.

过去，通过技术和经济因素确定了当前提取方法的改进和新金属提取过程的发展。最近，环境因素已成为确定过程生存能力的另一个重要特征。在这方面，对于本提案中描述的研究计划，主要目标是开发对环境影响较小的金属提取过程。在矿物和金属提取过程中，一些主要能源仍然是碳质或基于碳氢化合物的。最终，这些材料中的碳被转化为二氧化碳，这有助于全球变暖。为了解决这个问题，这项工作的重点将是研究微波处理技术。在这些微波工艺中使用的电能可能相对干净，并且还有其他潜在的优势，例如减少气体吞吐量和灰尘产生。矿物质的微波处理领域正在继续扩展，并在理解这种复杂的技术及其在提取冶金中的应用方面取得了长足的进步。目前，氢透明质铝的过程有些偏移，至少部分是因为湿润摩肌更环保。拟议的研究解决了这一问题，可能导致更绿色的增生术过程，并且还基于在金属提取方面的新研究领域的十多年经验。在接下来的五年中，该研究将集中在三种潜在的微波应用上，如下所示：（1）微波片段化研究，（2）微波曲霉加工和（3）煤的微波处理。此外，对于对本研究计划中提出的应用程序的调查，将生成信息，以帮助定义其他潜在的应用程序。此外，我们将继续确定感兴趣的矿石，浓缩物和矿物质的介绍性，并最终产生可发布的汇编。