发明名称 |
CALCIUM NITRATE BASED FERTILIZER |
摘要 |
Homogeneous calcium nitrate based fertilizers containing sulphur, and method for their preparations. Solid gypsum and/or a slow reacting sulphate mineral is mixed with melted calcium nitrate fertilizer at a temperature of 90-110 DEG C and kept at this temperature for 3-15 minutes and subsequently particulated at a temperature of 80-110 DEG C. The particulation by prilling is performed at 95-110 DEG C and the particulation by granulation is performed at 90-110 DEG C. The fertilizer is a homogeneous composition of a calcium nitrate fertilizer and gypsum and/or a slow reacting sulphate mineral comprising 0.1-5.0 weight % SO4-S, 14-19 weight % water soluble calcium and 16-21 weight % total calcium, and 0-3.0 weight % water soluble magnesium. The fertilizer may contain microamounts of Se and/or Co, and/or micronutrients like Mn, Cu, B and Zn.
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申请公布号 |
WO9745382(A1) |
申请公布日期 |
1997.12.04 |
申请号 |
WO1997NO00126 |
申请日期 |
1997.05.14 |
申请人 |
NORSK HYDRO ASA;OBRESTAD, TORSTEIN;ROEDSVIK, JOHANNE;LEGARD, TORBJOERN |
发明人 |
OBRESTAD, TORSTEIN;ROEDSVIK, JOHANNE;LEGARD, TORBJOERN |
分类号 |
C05C5/04;C05G1/00;(IPC1-7):C05C5/04;C05D3/00 |
主分类号 |
C05C5/04 |
代理机构 |
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代理人 |
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