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来源：百度知道 编辑：UC知道 时间：2024/07/07 01:32:44
本研究属于铂族金属二次资源再生回收科技领域，针对成分复杂、品位较低的含铂废催化剂的再生回收。本文介绍了国内外研究现状和技术进展，制定了用硫酸溶解γ-Al2O3－焚烧脱炭－“消化”转溶α-Al2O3－铂精矿精炼铂的火-湿法冶金工艺。分析了工艺过程原理，进行了工艺技术条件研究和生产实践，并作了技术经济评价和环境影响分析。
研究表明，用该工艺处理含Pt 0.186%，Al2O3 83.95%(包含α-Al2O3 11.75%)和C 13.99%的失效催化剂，工艺技术可行，流程畅通，设备运行正常，各项技术指标稳定。铂产品纯度>99.95%，从失效催化剂到铂产品铂的直收率>96%，全流程铂回收率>97.5%，加工成本为 5500元/kg•Pt：含铝溶液可制成铝产品。该工艺可获得较好的经济效益，生产过程不会造成环境二次污染。

关键词:失效催化剂 复杂成分 回收铂
英语

In this study, platinum-group metals are of secondary recovery of renewable resources in science and technology for complex, low-grade platinum catalyst for the regeneration of waste recycling. This paper introduces the domestic and international research and technical progress, the development of sulfuric acid dissolved the γ-Al2O3-burning off carbon - "digest" to soluble α-Al2O3-platinum concentrate platinum refining fire - hydrometallurgical process. Process analysis of the principle conditions for the process technology research and production practice, and made technical and economic evaluation and environmental impact analysis.

the research indicated that 83.95% (contains α-Al 2O3 with this craft processing including Pt 0.186%, Al2O3 11.75%) and the C 13.99% expiration catalysts, the processing technology is feasible, the flow is unimpeded, the equipment movement is normal, each technical specification is stable. The platinum product purity >99.95%, fr