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公开(公告)号：US4267058A
公开(公告)日：1981-05-12
申请号：US77227
申请日：1979-09-20
申请人： Hans Kyri , Jurgen Dobbers
发明人： Hans Kyri , Jurgen Dobbers
CPC分类号： C02F1/5236 , Y10S210/906
摘要： A precipitating agent for the dephosphatization of effluent comprising by weight about 5 to 75% of active iron (III) sulphate, about 25 to 95% of active iron (III) oxide and 0 to about 10% of anhydrous magnesium sulphate. Optionally, an alkaline constituent such as the oxide or hydroxide of calcium or magnesium may also be present and dephosphatization is effected at a pH of about 4.5 to about 8.5. Extremely low contents of residual phosphorous can be obtained in the filtrate, a precipitate containing iron and phosphorous settling out cleanly.
摘要翻译： 用于使流出物脱磷的沉淀剂包含重量约5至75％的活性硫酸铁（III），约25至95％的活性氧化铁（III）和0至约10％的无水硫酸镁。 任选地，也可以存在碱性成分如钙或镁的氧化物或氢氧化物，并且在约4.5至约8.5的pH下进行脱磷。 在滤液中可以获得极低的残留磷含量，含有铁和磷的沉淀物清洁地沉淀。
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公开(公告)号：US4200622A
公开(公告)日：1980-04-29
申请号：US960329
申请日：1978-11-13
摘要： In the purification of an ammonium fluoride solution containing silicic acid by adding iron (III) ions and precipitating the iron (III) ions at a pH above 8.5 and a concentration of free ammonia in the solution of more than about 1% by weight, the silicic acid being carried with the iron (III) ion precipitate, the improvement which comprises adding the iron (III) ions to the ammonium fluoride solution at a temperature below about 30.degree. C. and, before removal of the precipitate, to the solution a salt of at least one of the alkali metals, alkaline earth metals, zinc, aluminum and lead in such quantity that the solution becomes saturated with such salt.
摘要翻译： 在通过添加铁（III）离子和在高于8.5的pH下沉淀出铁（III）离子并且溶液中的游离氨浓度大于约1重量％来纯化含有硅酸的氟化铵溶液时， 硅酸与铁（III）离子沉淀携带，其改进包括在低于约30℃的温度下向氟化铵溶液中加入铁（III）离子，并且在除去沉淀物之前，向溶液a 至少一种碱金属，碱土金属，锌，铝和铅的盐的量使得溶液变得饱和。
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公开(公告)号：US4040850A
公开(公告)日：1977-08-09
申请号：US604856
申请日：1975-08-14
申请人： Hans Kyri , Karl Brandle , Martin Muller , Heinrich Heine
发明人： Hans Kyri , Karl Brandle , Martin Muller , Heinrich Heine
CPC分类号： C04B28/14
摘要： In the production of a gypsum-based porous body of high strength by foaming a gypsum-water mixture, the improvement which comprises including in said mixture about 0.1 to 1 part of a water-soluble aluminum compound per 100 parts by weight of gypsum, calcium oxide or calcium hydroxide in such a quantity that the final mixture has a pH-value in the range of about 10 to 13, a decomposition catalyst, and about 0.5 to 5 parts of hydrogen peroxide, expressed as a 35% solution, per 100 parts by weight of mixture, the ratio of solids to liquid being about 1 : 0.4 - 1.The preferred aluminum compound is aluminum nitrate. The preferred decomposition catalysts are manganese compounds such as manganates or permanganates, e.g. potassium permanganate.
摘要翻译： 在通过发泡石膏 - 水混合物生产高强度的石膏基多孔体时，其改进包括在每100重量份的石膏中加入约0.1至1份的水溶性铝化合物，石膏，钙 氧化物或氢氧化钙，其量为最终混合物的pH值为约10至13，分解催化剂和约0.5至5份以35％溶液表示的过氧化氢，每100份 的混合物，固体与液体的比例为约1:0.4-1。
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