Title

Characterization and Recycling of Spent Refractory Wastes from Metal Manufacturers in Missouri

Abstract

Approximately 7500 t of spent refractories are landfilled annually in Missouri. Research was initiated to reduce the amount landfilled by studying the types and quantities of spent refractories generated, the conditions of the wastes, and technologies for recycling and reusing spent refractories. This paper reviews the characterization results from three major spent refractory waste streams in Missouri and evaluates beneficiation and recycling. The results indicate considerable promise in reusing spent doloma refractories as a soil conditioner and spent alumino silicate refractories as a raw material for production of Portland cement. The amount of spent refractory wastes landfilled in Missouri could be reduced by an estimated 50% if these techniques were adopted. Attempts to recycle spent high alumina refractories as aggregates for castables are also discussed.

Department(s)

Materials Science and Engineering

Keywords and Phrases

Recycling; Reusing; Spent Refractories; Wastes

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1999 Elsevier, All rights reserved.

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