Binder and refractory compositions and methods

Details Binder and refractory compositions and methods Binder and refractory compositions and methods

B - Operations, Transporting

22

C

6/42

B22C 1/20 (2006.01)

Patent

CA 1216704

ABSTRACT OF THE DISCLOSURE Binder, filler, and refractory compositions and methods of using and making these compositions are dis- closed. The binder composition comprises colloidal silica, a liquid material containing Si-OH groups, a solvent which is capable of solubilizing the liquid material and the colloidal silica, and at least one aprotic, non-ionic, non-metallic, organic compound which contains at least one element selected from P, S, B and N and which stabilizes the binder composition against self-gelling. The colloidal silica and the liquid material are present in a ratio by weight of from about 1:12 to about 75:1 respectively. The liquid material has at least about 20% by weight SiO2. The colloidal silica contains at least about 15% by weight SiO2. The solvent and the organic compound are present in amounts so as to solubilize the liquid material and the colloidal silica, to provide a binder composition which is stable against self-gellation, and to provide a binder composition which gels to a single phase.

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