Invention Grant
US08444787B2 Methods of and systems for adding a high viscosity gypsum additive to a post-mixer aqueous dispersion of calcined gypsum
有权
将高粘度石膏添加剂添加到煅烧石膏的后混合水分散体中的方法和系统
- Patent Title: Methods of and systems for adding a high viscosity gypsum additive to a post-mixer aqueous dispersion of calcined gypsum
- Patent Title (中): 将高粘度石膏添加剂添加到煅烧石膏的后混合水分散体中的方法和系统
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Application No.: US13208154Application Date: 2011-08-11
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Publication No.: US08444787B2Publication Date: 2013-05-21
- Inventor: James R. Wittbold , W. David Song
- Applicant: James R. Wittbold , W. David Song
- Applicant Address: US IL Chicago
- Assignee: United States Gypsum Company
- Current Assignee: United States Gypsum Company
- Current Assignee Address: US IL Chicago
- Agency: Leydig, Voit & Mayer, Ltd.
- Agent Philip T. Petti; David F. Janci
- Main IPC: C04B9/04
- IPC: C04B9/04 ; C04B11/00 ; C04B28/14 ; B29C65/00 ; B32B13/00 ; B32B37/00
Abstract:
Provided are methods and systems for introducing a wet gypsum accelerator or other high viscosity production additive to an aqueous dispersion of calcined gypsum in a discharge apparatus downstream of a stucco mixer in which the dispersion was prepared. These methods and systems are useful in the production of various gypsum products such as board including wallboard and ceiling tiles.
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