发明名称 |
Manufacture of urea sulfur fertilizer |
摘要 |
A process is disclosed for the production of a urea sulfur fertilizer by mixing urea and molten sulfur to obtain a molten mixture and solidifying the molten mixture to obtain a homogeneous, solid, particulate urea sulfur fertilizer wherein the sulfur has particle sizes of smaller than about 100 micron. The process comprises passing molten urea and molten sulfur through a mixing device at a temperature above the melting points to produce a finely divided sulfur dispersed in urea with the molten sulfur added in amounts sufficient to produce said urea sulfur fertilizer, maintaining a pressure drop across said mixing device of at least about 200 kPa to form a homogenized melt of urea sulfur, and solidifying said homogenized melt by prilling or agglomeration.
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申请公布号 |
US4330319(A) |
申请公布日期 |
1982.05.18 |
申请号 |
US19810222466 |
申请日期 |
1981.01.05 |
申请人 |
COMINCO LTD. |
发明人 |
BEXTON, STEWART G.;HILDRED, GORDON C.;HIGGINS, JOHN T.;WHITHAM, JAMES G. |
分类号 |
C05C9/00;(IPC1-7):C05C9/00 |
主分类号 |
C05C9/00 |
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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