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Buttner Werke AG
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Buttner Werke AG
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Publication of ES283311A1publicationCriticalpatent/ES283311A1/en
Process for obtaining sodium tripolyphosphate, in the form of low temperature, in two stages of treatment, in which solutions of orthophosphate mixtures are dried in a first stage of treatment and thus transformed into solid form and in a second stage. stage is calcined in the presence of hot gases, characterized in that the heating of the second stage is carried out by fire gases which, by the additional mixture of returning vapors before their introduction in the calcination device, are put to a degree of humidity of at least 16%, preferably however to a minimum of 20-25%, and that the vapors evacuated from the circuit of the calcination stage are used for heating the first stage of treatment. (Machine-translation by Google Translate, not legally binding)
ES0283311A1961-12-201962-12-12Procedure for the obtaining of sodium tripolyphosphate (Machine-translation by Google Translate, not legally binding)
ExpiredES283311A1
(en)
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