摘要:
A chemically inert concrete composition includes, based on dry weight, about 50% to about 95% by weight glass particles and about 3% to about 40% by weight colloidal silica particles. Optional additional chemically inert ingredients can be included in amounts of about 3% to about 40% by weight. The concrete composition is substantially or totally free of Group I and Group IT metal oxides, exclusive of the glass particles, and is substantially or totally free of cement. A method of providing the chemically inert concrete includes the steps of providing and mixing an aqueous colloidal silica dispersion with the glass particles, followed by application of the resulting composition to a substrate, and drying.
摘要:
A refractory composition yields refractory articles having excellent resistance to high-temperature thermal shock and creep. The refractory composition is based primarily on chamotte having controlled particle sizes, and may also include mullite, fused silica, calcined alumina and microsilica, having controlled particle sizes. The refractory composition includes an aqueous colloidal silica binder that provides excellent castability and binding between the ingredients following drying. A method of making a refractory part from the composition, and refractory parts thus made, are also included in the invention.
摘要:
The aqueous protective coating composition is provided for easy application to refractory linings and walls. When dried, the protective coating composition provides excellent chemical resistance to molten aluminum alkali metals and vapors. The protective coating composition includes alumina and silica, suitably provided as mullite, calcined alumina, and colloidal silica; and a metallic non-wetting agent.