Recovery and utilization of iron and carbon values from blast furnace flue dust

摘要

Waste recycling in an integrated iron and steel plant is important with regard, to environmental and economic considerations. However, recycling of the waste needs to be supported by metallurgical studies to reap the maximum economic benefit. In this article, a typical flue dust sample obtained from an Egyptian iron and steel company was characterised and, the amenability of recovering iron and carbon values from it was investigated. Flotation was used to recover carbon values while magnetic separation was employed for recovering the iron. It was possible to recover about 99 percent of carbon values with an assay of 87 percent purity. Additionally, high intensity magnetic separation was adopted, to recover a clean magnetic fraction with 79 percent recovery at an assay of 52 percent) Fe.