Aluminous refractory composition

Details Aluminous refractory composition Aluminous refractory composition

C - Chemistry, Metallurgy

04

B

261/38

C04B 7/00 (2006.01) C04B 28/34 (2006.01) C04B 35/66 (2006.01)

Patent

CA 1084536

ALUMINOUS REFRACTORY COMPOSITION ABSTRACT: Refractory compositions containing alumina or aluminum silicate and a phosphate bonding agent can be im- proved by the addition of from 0.2 to 1.5 percent tetra- sodium pyrophosphate (TSPP) in combination with bentonite. The TSPP minimizes the amount of bentonite required for good workability in aqueous formulations for ramming or hand applications, thereby miximizing density and mini- mizing water required for tempering, also extending the storage life of these refractories and maintaining a high percentage of initial workability over a period of several months.

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