发明名称 |
DUAL INJECTION OF TWO POLYMERIC FILTRATION AIDS FOR GYPSUM REMOVAL FROM PHOSPHORIC ACID/GYPSUM SLURRY |
摘要 |
<p>A process to improve the polymeric filtration aid performance used in removal of gypsum from phosphoric acid/gypsum slurry. A synergistic effect has been observed by using a Dual Injection method. This method more specifically involves using two polymers (A & B) of different chemistry and injecting into slurry at a different time. The polymer chemistry of filtration aid A is selected from the group consisting of non-ionic, anionic, and cationic polymers and the polymer chemistry of filtration aid B is selected from the group consisting of sulfonated polymers. The polymer (A & B) usage is reduced by around 50% and performance improved.</p> |
申请公布号 |
WO2007055771(A2) |
申请公布日期 |
2007.05.18 |
申请号 |
WO2006US32613 |
申请日期 |
2006.08.22 |
申请人 |
ARR-MAZ PRODUCTS, L.P.;IRWIN, LOUIS |
发明人 |
IRWIN, LOUIS |
分类号 |
B01D37/02 |
主分类号 |
B01D37/02 |
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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