发明名称 |
PROCESSO PARA A PRODUCAO DE ZEOLITO A |
摘要 |
<p>Crystalline zeolite powder of Type A is employed as a phosphate substitute in washing agents. For this use, it is advantageous if the crystalline zeolite powder of Type A has a specific average particle diameter of 4.3 to 8.5 mu as well as a specifically narrow particle size distribution. By a specific sequence in the addition of the reactants in the precipitation of zeolites A this requirement of the product is fulfilled. Thereby water is present in a receiver and there are simultaneously added sodium aluminate liquor and waterglass solution and subsequently after a long stirring phase there are added further sodium aluminate liquor and further waterglass solution. The maximum grit content of the zeolite powder of Type A obtained is 0.2%.</p> |
申请公布号 |
BR8101075(A) |
申请公布日期 |
1981.09.15 |
申请号 |
BR19818101075 |
申请日期 |
1981.02.23 |
申请人 |
DEGUSSA AG;HENKEL KG AUF AKTIEN |
发明人 |
STRACK H |
分类号 |
C01B39/16;C11D3/12;(IPC1-7):C01B33/28 |
主分类号 |
C01B39/16 |
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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