"Approximately two million metric tons of spent refractory are generated annually by metal manufacturers in United States, nearly all of which are landfilled wasting valuable natural resources. The objective of this research is 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. Although this project is focused on the state of Missouri, the diverse groups of metals (lead, aluminum, steel, and copper) manufacturers in the state make the results applicable to other regions of the U.S. and of the world.
More than 150 metal related companies in Missouri discard approximately 7,500 metric tons of spent refractories annually, over 99 wt.% of which are landfilled. This research summaries the data from an informational survey of metal manufacturers in the state, and highlights the potential barriers to, and opportunities for, spent refractory recycling. The representative samples from large waste streams are characterized and different recycling techniques were studied. The results indicate considerable promise in reusing spent doloma refractories as a soil conditioner and spent alumino silicate refractories as a raw material for the 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"--Abstract, page iv.
Peaslee, Kent D., 1956-2013
Smith, Jeffrey D.
O'Keefe, T. J. (Thomas J.)
Materials Science and Engineering
M.S. in Metallurgical Engineering
University of Missouri--Rolla
Journal article titles appearing in thesis/dissertation
- Study of Spent Refractory Waste Recycling from Metal Manufacturers in Missouri
- Characterization and Recycling of Spent Refractory Wastes from Metal Manufacturers in Missouri
- Recycling/Reuse Techniques for Spent Refractories from Steel Producers
xvi, 101 pages
© 1999 Hui Fang, All rights reserved.
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Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b4208160~S5
Fang, Hui, "Spent refractory recycling in metal producing industries" (1999). Masters Theses. 1819.
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