Magnesium oxide refractory forming mixture and method of...

Details Magnesium oxide refractory forming mixture and method of... Magnesium oxide refractory forming mixture and method of...

C - Chemistry, Metallurgy

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B

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C04B 35/04 (2006.01) C04B 35/043 (2006.01) C04B 35/047 (2006.01) C04B 35/632 (2006.01)

Patent

CA 1053711

IMPROVED MAGNESIUM OXIDE REFRACTORY FORMING MIXTURE AND METHOD OF PRODUCING THE SAME ABSTRACT OF THE DISCLOSURE Refractory shapes containing magnesium oxide are pressed from a refractory forming mixture which consists of particulate refractory material containing magnesium oxide and a binder solution of zinc lignosulfonate in water. The use of zinc lignosulfonate in solution as a binder stabilizes the refractory forming mixture, to substantially prevent the loss of density of refractory shapes as the refractory forming mixture ages. Zinc may alternatively be provided in the binder solution by adding a zinc compound to a binder solution composed of water and a lignosulfonate salt, the zinc compound dissociating in solution to provide zinc ions. A refractory forming mixture is prepared by mixing zinc lignosulfonate, water, and particulate refractory material containing magnesium oxide, or by mixing a lignosulfonate salt, water, a zinc compound which dissociates in solution to provide zinc ions, and particulate refractory material containing magnesium oxide.

234060

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