초록 ▼

A composition used in making wallboard is provided. The composition requires at least fly ash, water and a first binder. The composition is located between two members that together form the wallboard. In one embodiment, at least the first binder is part of a foamable solution and part of a binder s

A composition used in making wallboard is provided. The composition requires at least fly ash, water and a first binder. The composition is located between two members that together form the wallboard. In one embodiment, at least the first binder is part of a foamable solution and part of a binder solution. In this embodiment, the fly ash, foamable solution and binder solution are combined in a mixer. The output of the mixer can be regulated based on detection of a magnitude related to viscosity of the composition. During the process for making the wallboard, the composition is sandwiched between the two members and subject to both preheating and subsequent heating stages. During the preheating, a sufficient number of bubbles associated with the binder are maintained in order to achieve a predetermined density based on the closed cells that are formed after the water evaporates. Additionally, any expansion during the subsequent heating step is controlled so that it is less than expansion of the composition during the preheating.

대표청구항 ▼

A composition used in making wallboard is provided. The composition requires at least fly ash, water and a first binder. The composition is located between two members that together form the wallboard. In one embodiment, at least the first binder is part of a foamable solution and part of a binder s

A composition used in making wallboard is provided. The composition requires at least fly ash, water and a first binder. The composition is located between two members that together form the wallboard. In one embodiment, at least the first binder is part of a foamable solution and part of a binder solution. In this embodiment, the fly ash, foamable solution and binder solution are combined in a mixer. The output of the mixer can be regulated based on detection of a magnitude related to viscosity of the composition. During the process for making the wallboard, the composition is sandwiched between the two members and subject to both preheating and subsequent heating stages. During the preheating, a sufficient number of bubbles associated with the binder are maintained in order to achieve a predetermined density based on the closed cells that are formed after the water evaporates. Additionally, any expansion during the subsequent heating step is controlled so that it is less than expansion of the composition during the preheating. it within said body, at least one inlet, and at least one outlet; said body including first and second members detachably connected to one another, said first and second members stationary relative to one another during operation of said gas collector; a ring-shaped seal having a generally crescent-shaped cross-section disposed on a top surface of said body for cooperating with the lid to prevent escape of the gasses from the reaction chamber, said seal having inner and outer edges with said outer edge including symmetrically-positioned slots, said top surface including a pair of concentric slots into which said inner and outer edges are respectively positioned. 16. The gas collector according to claim 15, wherein said seal is formed from molybdenum. 17. The gas collector according to claim 15, wherein said seal is detachably connected to said body. 18. The gas collector according to claim 15, wherein said seal is disposed between said body and the lid.