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Biochar has been extensively used in ferrous metallurgy in recent years as it has comparable metallurgical properties to coke and coal, showing great potential for reduction of the production cost of iron and steel with enhanced quality and for promotion of environmental protection. This article reviewed the main applications of biochar in the iron and steel industry, including its use in coking,...
Preparation of refractory materials from ferronickel slag by sintering over a broad temperature range (1200°C to 1500°C) with addition of sintered magnesia was explored. The thermodynamic calculations indicated that the amounts of newly generated high-melting-point forsterite and spinel phases increase with increasing temperature. The experimental analysis demonstrated that elevating the sintering...
As an important secondary resource with abundant platinum group metals (PGMs), spent catalysts demand recycling for both economic and environmental benefits. This article reviews the main pyrometallurgical processes for PGM recovery from spent catalysts. Existing processes, including smelting, vaporization, and sintering processes, are discussed based in part on a review of the physiochemical characteristics...
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