发明名称 |
METHOD OF PREPARING COMPLEX FERTILIZERS |
摘要 |
FIELD: chemical industry. SUBSTANCE: claimed method comprises mixing phosphoric and sulfuric acids with ammonia, granulating and drying the product. Ammonia and phosphoric acid are mixed to P<SB>2</SB>O<SB>5</SB>:N = 1:(2,2-20) molar ratio of 1:(2.2-20) and subsequently adding sulfuric acid and P<SB>2</SB>O<SB>5</SB>:N molar ratio is maintained at 4:5 -20 and at 90-150 C. Potassium containing additive may also be used to P<SB>2</SB>O<SB>5</SB>:K<SB>2</SB>O molar ratio of 1:(0.5-10). Potassium containing additive includes potassium chloride, potassium sulfate, potassium-magnesia and is added either to suspension or to granulation stage. The claimed method makes it possible to avoid using production equipment made of special corrosion resistant steels. EFFECT: wider range of fertilizers. 3 clo
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申请公布号 |
RU2116282(C1) |
申请公布日期 |
1998.07.27 |
申请号 |
RU19970110584 |
申请日期 |
1997.06.18 |
申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO NIUIF |
发明人 |
KLASSEN P.V.;ZAVERTJAEVA T.I.;LYKOV M.V.;LAPIN EVGENIJ VASIL'EVICH;TRET'JAK EVGENIJ VLADIMIROVICH;SHABALIN VALERIJ IVANOVICH;STEPANENKO MIKHAIL DMITRIEVICH;DUDKA VLADIMIR ALEKSEEVICH;PORKHUN NIKOLAJ ALEKSANDROVICH;SKIDANENKO ALEKSANDR IVANOVICH |
分类号 |
C05G1/06;(IPC1-7):C05G1/06 |
主分类号 |
C05G1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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