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公开(公告)号：EP1292537A1
公开(公告)日：2003-03-19
申请号：EP01901224.4
申请日：2001-01-04
申请人： KEMIRA AGRO OY
发明人： HERO, Heikki , POUKARI, Juhani
摘要： The invention relates to a method for producing thermally and mechanically stable ammonium nitrate by dissolving in nitric acid 1-3 % by weight of reticulated metal silicate, before treatment with ammonia. The ammonium nitrate granules produced by this method swell very little, they do not considerably cake, and their granule strength is high.
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公开(公告)号：EP1230197A1
公开(公告)日：2002-08-14
申请号：EP00960733.4
申请日：2000-09-21
申请人： KEMIRA AGRO OY
发明人： KIISKI, Harri , POUKARI, Juhani
CPC分类号： C05G3/0058 , C05C9/00 , C05D1/02 , C05G1/00
摘要： The invention relates to a process for the preparation of compound fertilizer granules containing at least two of the plant nutrients nitrogen, phosphorous and potassium, said process comprising the steps of: (a) mixing solid fertilizer raw materials and recycled oversize material, (b) crushing the mixture, (c) optionally mixing the crushed mixture with recycled undersize material to provide a solid feed material having a desired composition, (d) feeding the feed material to a melter and introducing hot air into said melter for heating the feed material and for melting a desired portion thereof and keeping said portion in molten state, (e) feeding the partly molten feed material from the melter to a granulator to obtain a granulated product, and (f) cooling and screening the granulated product to obtain dry compound fertilizer granules having a desired size distribution.
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3.发明公开
公开(公告)号：EP0879217A1
公开(公告)日：1998-11-25
申请号：EP97902392.0
申请日：1997-02-07
申请人： KEMIRA AGRO OY
摘要： The invention relates to a process for the production of thermally stable and strong fertilizer granules which contain a potassium- and/or magnesium-containing mica, such as phlogopite and/or biotite, as well as potassium and/or magnesium derived partly in a water-soluble form from these minerals by nitric acid etching. The granules may additionally contain conventional plant nutrients. The invention also relates to products produced by the above process.
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公开(公告)号：EP1127035A1
公开(公告)日：2001-08-29
申请号：EP99932903.0
申请日：1999-06-28
申请人： KEMIRA AGRO OY
CPC分类号： C05G3/0058
摘要： The invention relates to a process for the preparation of compound fertilizer granules containing at least two of the plant nutrients nitrogen, phosphorus and potassium, said process comprising the steps of: providing a solid feed material comprising at least one solid fertilizer raw material and optionally recycle material, feeding the feed material or a part thereof into a melter for melting a desired portion thereof and keeping said portion in molten state, feeding the molten or partly molten material and optionally other desired solid raw materials to a granulator to obtain a granulated product, and cooling and optionally screening the granulated product to obtain dry compound fertilizer granules having a desired size distribution, provided that no water or aqueous liquid is introduced into the process.
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5.发明授权
公开(公告)号：EP0879217B1
公开(公告)日：2000-07-19
申请号：EP97902392.6
申请日：1997-02-07
申请人： KEMIRA AGRO OY
摘要： The invention relates to a process for the production of thermally stable and strong fertilizer granules which contain a potassium- and/or magnesium-containing mica, such as phlogopite and/or biotite, as well as potassium and/or magnesium derived partly in a water-soluble form from these minerals by nitric acid etching. The granules may additionally contain conventional plant nutrients. The invention also relates to products produced by the above process.
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