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Abstract

The objective of the research programme was to develop a pilot-plant facility to produce glass ceramic (Silceram) by a novel process. In this, a silicate melt is converted to a fine grained pore-free ceramic during a controlled cooling heat treatment, removing the need for reheating. Glass ceramic has been produced at the pilot-plant from melts of pure oxides and carbonates, and also from mixtures of blast furnace slag and colliery shale with added nucleating agent. These industrial by-products improve the efficiency of melting and refining. Further energy savings are envisaged by the use of molten blast furnace slag as a constituent. The superior mechanical properties of the new material have been studied in laboratory tests, as functions of microstructure and chemical composition. The crystal size of the major silicate phase is about 2pm and the porosity is close to zero. The high strength and hardness are associated with excellent resistance to erosion by fluid borne particles. Estimates of manufacturing cost for flat produce "Silceram" on the 1000 tonne per year scale show it to be strongly competitive with other erosion resistant ceramics used industrially. Testing at industrial sites has been commenced.

Additional information

Authors: ROGERS P S, ROYAL SCHOOL OF MINES, IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY, LONDON (UK);WILLIAMSON J, ROYAL SCHOOL OF MINES, IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY, LONDON (UK);BELL J F, ROYAL SCHOOL OF MINES, IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY, LONDON (UK);CAMPBELL M ROYAL SCHOOL OF MINES, IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY, LONDON (UK), ROYAL SCHOOL OF MINES, IMPERIAL COLLEGE OF SCIENCE AND TECHNOLOGY, LONDON (UK)
Bibliographic Reference: EUR 10389 EN (1986) MF, 100 P., BFR 300, BLOW-UP COPY BFR 500, EUROFFICE, LUXEMBOURG, POB 1003
Availability: Can be ordered online
Record Number: 1989125015800 / Last updated on: 1987-02-01
Category: PUBLICATION
Available languages: en