Invention Grant
- Patent Title: Methods of and systems for preparing a heat resistant accelerant slurry and adding the accelerant slurry to a post-mixer aqueous dispersion of calcined gypsum
- Patent Title (中): 制备耐热促进剂浆料的方法和系统，并将促进剂浆料加入煅烧石膏的后混合水分散体
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Application No.: US11116549Application Date: 2005-04-27
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Publication No.: US07718019B2Publication Date: 2010-05-18
- Inventor: James R. Wittbold , Brent Groza
- Applicant: James R. Wittbold , Brent Groza
- 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: B29C65/00
- IPC: B29C65/00 ; B32B13/00 ; B32B37/00 ; B32B1/00 ; B32B29/00 ; B32B3/18 ; B32B5/20 ; C04B9/04 ; C04B11/00 ; C04B28/14 ; H05B6/00
Abstract:
Methods and systems are provided for preparing a heat resistance accelerator (HRA) slurry. Also provided are methods and systems for introducing a HRA slurry 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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