A new process to recover more high value metals and salts from furnace slag & dross with a 90% energy saving

从炉渣中回收更多高价值金属和盐的新工艺

• 批准号: 102407
• 金额: $ 60.87万
• 依托单位: ULTROMEX LTD
• 依托单位国家: 英国
• 项目类别: Collaborative R&D
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=102407
• 关键词: new; process; recover; more; value

Slag is a by-product of metal smelting, and at least 43m Metric Tonnes of it are known to be produced every year in the process of refining metals & making alloys. Slag is used in low value applications such as ballast in concrete and in aggregate road mat'ls. However, slag retains significant amounts of metals & these are sometimes recovered by remelting the slag, but this is extremely expensive with a very high energy burden and Carbon footprint. Our proven "Recyclamet" concept is to use a novel technology to selectively break down the non-metallic components of slag from the metallic particles. We have completed a proof of concept project, adding our own innovations to this process and the results demonstrate excellent separation of all metal from non-metal particles. The benefits of our process vs existing process are: • >90% saving in energy consumption, cost & CO2 footprint • Rapid turnaround of material, • Reduced landfill • Retain control of metal recovered. • Smelters can recover more metal and on-site, removing the need for transport elsewhere, • Maximise the value of outputs • Recovery of salt as an added revenue stream.

炉渣是金属冶炼的副产品，每年在精炼金属和制造合金的过程中至少产生4300万公吨炉渣。矿渣用于低价值应用，如混凝土中的道渣和集料道路垫。然而，炉渣保留了大量的金属，这些金属有时可以通过重新熔化炉渣来回收，但这是非常昂贵的，具有非常高的能源负担和碳足迹。我们成熟的“破碎机”概念是使用一种新技术，从金属颗粒中选择性地分解炉渣中的非金属成分。我们已经完成了一个概念验证项目，将我们自己的创新加入到这个过程中，结果证明了所有金属与非金属颗粒的出色分离。与现有工艺相比，我们的工艺的优势在于：·能耗、成本和二氧化碳排放量节省>90%·材料周转速度快，·减少垃圾填埋·回收金属的保留控制。·冶炼厂可以在现场回收更多的金属，从而消除了在其他地方运输的需要，·最大限度地提高产出的价值·回收盐作为额外的收入来源。