Method and system for stucco conditioning
AssigneeNational Gypsum Properties, LLC
InventorsMatthew M. Hilken, David G. Peterson, Jr., Joseph J. Bailey
Life of this patent
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Abstract
A process and system for manufacturing gypsum wallboard that aerates, conditions, and cools a portion of the stucco used in the manufacturing process. This conditioning of the stucco reduces the amount of water needed to manufacture the gypsum wallboard which in turn reduces the amount of energy and cost needed to manufacture the wallboard. The stucco may also be pretreated with water. This process may be carried out using a conveyor that agitates a moving bed of stucco while the top surface of the bed is subject to a low pressure water spray.
Claims21
A method for producing a stucco slurry, the method comprising the steps of:
- providing a mixer;
- providing a blender;
- providing a supply of flash calcined gypsum stucco;
- dividing the supply of flash calcined gypsum stucco into a first portion of stucco and a second portion of stucco;
- conditioning the first portion of stucco by aerating the first portion of the stucco in the blender;
- adding the conditioned first portion of stucco to the mixer;
- adding the second portion of stucco to the mixer, wherein the second portion of stucco is unconditioned;
- and
- mixing the conditioned first portion of stucco and the unconditioned second portion of stucco with at least water to produce the stucco slurry.
A method of producing a stucco slurry, the method comprising the steps of:
- providing at least one mixer;
- providing a first portion and a second portion of stucco;
- providing at least one blender;
- adding the first portion of stucco to the blender;
- conditioning the first portion of stucco by aerating the first portion of stucco in the blender;
- adding the conditioned first portion of stucco to the mixer;
- adding the second portion of stucco to the mixer, wherein the second portion of stucco is unconditioned;
- mixing the conditioned first portion of stucco, the unconditioned second portion of stucco, and at least water in the mixer to produce the stucco slurry.
Dependencies are inferred from the claim text.