发明名称 |
Apparatus for mixing calcined gypsum and its method of operation |
摘要 |
This invention provides a method and apparatus for mixing calcined gypsum. The invention comprises a mixer (10) which employs high pressure water to eliminate or substantially reduce the formation of lumps of gypsum inside the mixer which cause paper breaks when the calcined gypsum slurry containing the lumps is used to form the gypsum core in a gypsum wallboard product. High pressure water jets (20), (21) direct a spray of high pressure water at the surfaces within the mixer (10) where the lumps of gypsum are formed. The method of this invention utilizes the high pressure water as part of the metered water that is continuously fed to the mixer, with the balance of the water being fed through low pressure nozzles (22). <IMAGE> |
申请公布号 |
AU1133799(A) |
申请公布日期 |
1999.08.19 |
申请号 |
AU19990011337 |
申请日期 |
1999.01.15 |
申请人 |
UNITED STATES GYPSUM COMPANY |
发明人 |
STEPHEN BURDETT JOHNSON;CHARLES ALLEN WHITTINGTON;LYLE DEE FULLMER |
分类号 |
B28C5/16;B01F15/00;B28C5/08;B28C7/12 |
主分类号 |
B28C5/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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