METHOD AND A SYSTEM FOR UTILIZING INDUSTRIAL WASTE IN A PROCESS OF MANUFACTURING BIOLOGICALLY ENRICHED CALCIUM FERTILIZER

摘要

1. Method for manufacturing biologically enriched calcium fertilizer containing a deacidificating ingredient and mother liquor which is molasses wort from the process of biological synthesis of citric acid with the use of molasses, characterized in that from previously milled calcium oxide CaO whose granulation ranges from 1 mm3 to 15 mm3, most preferably from 3 mm3 to 6 mm3, a wide layer moving in a constant process is created, whose thickness does not exceed 25 mm, and the layer is treated in the place where it is created by means of spraying it with water mist, and next after the time necessary for initiation of an exothermic reaction of conversion of CaO into Ca(OH)2, not longer, however, than 200 sec, and after a temperature not lower than 60 degrees C is reached in the mass, it is treated by means of constant or periodical surface spraying with mist of mother liquor previously condensed to the contain of dry matter maintained in a range between 40% by weight and 45% by weight and is subject to constant homogenizing mixing for 10 to 50 minutes, until the final temperature not higher than 30 degrees C is achieved, and the final concentration of the mother liquor in calcium hydroxide obtained in this way ranges from 20% to 35% by weight, and next the semi-finished product obtained in this way is subject to chamber ripening conducted at an ambient temperature not lower than 18 degrees C and for a time not shorter than 24 hours, after the lapse of which to the ripe semi-finished product a further portion of admixture is added by means of spraying it with mist of condensed mother liquor fed in a constant process until the level between 35% and 60% by weight of dry matter in a weight unit and final granulation between 3 mm3 and 10 mm are obtained, and the final product manufactured in this manner is subject to seasoning for a time not shorter than 36 hours in an ambient temperature not lower than 20 degrees C, and next it is packed in unit packages.IMAGE