发明公开
EP0059280A1 Preparation of granular sodium tripolyphosphate products
无效
Verfahren zur Vorbereitung von Erzeugnissen auskörnigenNatriumtripolyphosphaten。
- 专利标题： Preparation of granular sodium tripolyphosphate products
- 专利标题（中）： Verfahren zur Vorbereitung von Erzeugnissen auskörnigenNatriumtripolyphosphaten。
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申请号： EP81300883.6申请日： 1981-03-03
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公开(公告)号： EP0059280A1公开(公告)日： 1982-09-08
- 发明人: Hensler, Paul Leonard , Church, Delmar Fleming , Beger, Robert William
- 申请人： FMC Corporation
- 申请人地址： 2000 Market Street Philadelphia Pennsylvania 19103 US
- 专利权人： FMC Corporation
- 当前专利权人： FMC Corporation
- 当前专利权人地址： 2000 Market Street Philadelphia Pennsylvania 19103 US
- 代理机构： Warden, John Christopher
- 主分类号： C01B25/41
- IPC分类号： C01B25/41
摘要：
Dense rotary dried sodium tripolyphosphate (STPP) particles having a bulk density of at least 0.9 g/cc and a particle size distribution of 0 to 85% by weight +20 mesh, 15 to 100% by weight -20 +100 mesh and 0 to 20% by weight -100 mesh are moisturized by adding a sufficient amount of water to produce a material containing on the average between about 10% and about 30% by weight moisture. The moisturized material is calcined to a temperature within the range of from about 300 to about 600°C, to produce a granular STPP product having low friability, high absorptivity and a bulk density within the range of from about 0.65 to about 0.87 g/cc.
公开/授权文献
- EP0059280B1 Preparation of granular sodium tripolyphosphate products 公开/授权日：1985-01-02
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