- 专利标题: MANUFACTURE OF FERTILISER
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申请号: US17282848申请日: 2019-10-07
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公开(公告)号: US20210347703A1公开(公告)日: 2021-11-11
- 发明人: Jacobus Johannes VAN DER MERWE , Jakub Bogdan SKUT , Michael James CORBETT
- 申请人: Jacobus Johannes VAN DER MERWE , Jakub Bogdan SKUT , Michael James CORBETT , BALLANCE AGRI-NUTRIENTS LIMITED
- 申请人地址: NZ Whakatane; NZ Mount Maunganui; NZ Mount Maunganui; NZ Mount Maunganui
- 专利权人: Jacobus Johannes VAN DER MERWE,Jakub Bogdan SKUT,Michael James CORBETT,BALLANCE AGRI-NUTRIENTS LIMITED
- 当前专利权人: Jacobus Johannes VAN DER MERWE,Jakub Bogdan SKUT,Michael James CORBETT,BALLANCE AGRI-NUTRIENTS LIMITED
- 当前专利权人地址: NZ Whakatane; NZ Mount Maunganui; NZ Mount Maunganui; NZ Mount Maunganui
- 优先权: NZ747034 20181005,NZ756572 20190821
- 国际申请: PCT/NZ2019/050132 WO 20191007
- 主分类号: C05B1/02
- IPC分类号: C05B1/02 ; C05B19/02
摘要:
Provided is a method of manufacturing phosphate fertilizer that comprises dicalcium phosphate, the method comprising providing milled phosphorus-containing rock having a total phosphorus content of at least about 15% P by weight, mixing the milled phosphate-containing rock with a mineral acid in a reaction vessel to produce a superphosphate product, and mixing the superphosphate product with a calcium-source reverting agent and a magnesium-source reverting agent to produce a reverted product, the calcium-source reverting agent comprising at least about 20% by weight of the total reverting agent of calcium oxide with a calcium carbonate equivalence of at least about 134%, and the magnesium-source reverting agent providing a magnesium source and comprising at least about 20% by weight of the total reverting agent of magnesium source with a calcium carbonate equivalence of at least about 80%, to produce a granulated cured reverted product having a product yield of at least about 1.90 or of at least about 1.77, and a moisture content of less than 3%.
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