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Publication of PL216487B1publicationCriticalpatent/PL216487B1/en
Solid-Sorbent Or Filter-Aiding Compositions
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Abstract
Sposób wytwarzania tripolifosforanu sodu o niskim ciezarze nasypowym polega na tym, ze do stezonego kwasu fosforowego dodaje sie stopniowo, przy ciaglym mieszaniu i rozcieraniu, sode amoniakalna w takiej ilosci by zachowac stosunek stechiometryczny Na/P = 1,67, po czym przy ciaglym mieszaniu dodaje sie recyrkulowany gotowy produkt tripolifosforan sodu, przy czym stosunek wagowy recyrkulatu do pozostalej czesci wsadu wynosi korzystnie od 2:1 do 5:1, a nastepnie otrzymana mieszanine kalcynuje sie w kalcynatorze w znany sposób.The method of producing sodium tripolyphosphate with low bulk density is that to the concentrated phosphoric acid is gradually added, with continuous mixing and trituration, ammonia soda in such an amount as to maintain the stoichiometric ratio Na / P = 1.67, and then with continuous mixing recirculated finished product sodium tripolyphosphate, wherein the weight ratio of the recirculate to the remainder of the feed is preferably from 2: 1 to 5: 1, and the resulting mixture is then calcined in a calciner in a known manner.
PL397286A2011-12-082011-12-08Method for producing a low bulk density sodium tripolyphosphate
PL216487B1
(en)
Gypsum composition, gypsum slurry, gypsum hardened body, gypsum-based building material, gypsum board, and manufacturing method for a gypsum-based building material