发明名称 |
METHOD OF PRODUCTION OF GRANULATED SUPERPHOSPHATE |
摘要 |
FIELD: manufacture of simple granulated superphosphate from apatite as mineral fertilizer. SUBSTANCE: method includes mixing apatite with absorption runoff at simultaneous mechanochemical activation and grinding it to sizes of apatite particles when residue on 0.036-mm sieve ranges from 5 to 35% of total mass of particles; this mixture is subjected to subsequent decomposition at one stage at temperature of 80 to 90 C at introduction of neutralizing additive; chalk is used as such additive which is introduced in pulp in the amount sufficient for reduction of free acid in it by 1.9 to 2 times ; it is introduced into granulation and drying stage or is used for neutralization of ready granules. EFFECT: possibility of producing simple superphosphate from one kind of raw material at high decomposition coefficient. 2 cl, 3 ex
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申请公布号 |
RU2195439(C1) |
申请公布日期 |
2002.12.27 |
申请号 |
RU20010132606 |
申请日期 |
2001.12.04 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "NAUCHNO-ISSLEDO;SIDAM IM JA V SAMOJLOVA;NI AOOT |
发明人 |
ANGELOV A.I.;BRODSKIJ A.A.;GOLOVANOV V.G.;IVANOV I.JU.;KAZAK V.G.;KLASSEN P.V.;OZEROV S.A.;SOBOLEV N.V.;KORSHUNOV V.V. |
分类号 |
C05B1/02;(IPC1-7):C05B1/02 |
主分类号 |
C05B1/02 |
代理机构 |
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地址 |
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