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    CALCIUM NITRATE AND POTASSIUM NITRATE FERTILISER PARTICLES
    3.
    发明公开
    CALCIUM NITRATE AND POTASSIUM NITRATE FERTILISER PARTICLES 审中-公开

    公开(公告)号：EP3348538A1

    公开(公告)日：2018-07-18

    申请号：EP17151570.3

    申请日：2017-01-16

    申请人： YARA International ASA

    发明人： CHLADEK, Petr ,  MYRSTAD, Amund ,  OBRESTAD, Torstein

    IPC分类号： C05C5/04 ,  C05C5/02 ,  C01D9/18 ,  C01D9/00

    CPC分类号： C05C5/02 ,  C01D9/18 ,  C01F11/36 ,  C05C5/04

    摘要： The present disclosure concerns fertilizer particles comprising calcium nitrate and potassium nitrate. It is found that fertilizer particles comprising 40 to 50% w/w calcium nitrate and 45 to 55% w/w potassium nitrate can be produced by melt granulation. Due to undercooling problems, such particles were not expected to be suitable for industrial production by melt granulation. However, the present disclosure provides a composition which forms a low viscosity melt with short solidification time. This was successfully achieved by reducing the water content of a fertilizer melt comprising 40 to 50% w/w calcium nitrate and 45 to 55% w/w potassium nitrate to less than 3% w/w of the melt.

    USE OF A CALCIUM POTASSIUM NITRATE SALT FOR THE MANUFACTURE OF A HEAT TRANSFER FLUID
    4.
    发明公开
    USE OF A CALCIUM POTASSIUM NITRATE SALT FOR THE MANUFACTURE OF A HEAT TRANSFER FLUID 有权
    钙硝酸钾的盐用于生产传热流体USE

    公开(公告)号：EP2898039A1

    公开(公告)日：2015-07-29

    申请号：EP13762514.1

    申请日：2013-09-17

    申请人： YARA International ASA

    发明人： OBRESTAD, Torstein ,  MYRSTAD, Amund ,  FROGNER, Tore

    IPC分类号： C09K5/12

    CPC分类号： C09K5/12

    摘要： The present invention relates to the use of a double salt of Ca(NO
    3 )
    2 and KNO
    3 for the manufacture of a melt, in particular a nitrate-based heat transfer fluid (HTF) and/or thermal energy storage fluid, for example in solar energy applications, such as in solar electrical power plant systems using a parabolic through, a central receiver or a linear Fresnel, which have both a low melting temperature and a high decomposition temperature, as well as to methods for the manufacture thereof. Using said double salt, a melt could be manufactured comprising at least NaNO
    3 , KNO
    3 and Ca(NO
    3 )
    2 , preferably, an eutectic ternary melt comprising Ca(NO
    3 )
    2 , NaNO
    3 and KNO
    3 in a weight ratio of about 42:15:43 with an operating temperature of about 131 °C to about 560 °C.

    METHOD FOR PRODUCING NITROPHOSPHATE PRODUCTS HIGH IN NITROGEN
    5.
    发明公开
    METHOD FOR PRODUCING NITROPHOSPHATE PRODUCTS HIGH IN NITROGEN 有权
    VERFAHREN ZUR HERSTELLUNG VON NITROPHOSPHATPRODUKTEN MIT HOHEM STICKSTOFFGEHALT

    公开(公告)号：EP2021304A2

    公开(公告)日：2009-02-11

    申请号：EP07747588.7

    申请日：2007-04-03

    申请人： YARA International ASA

    发明人： OBRESTAD, Torstein ,  SNARTLAND, Susanne

    IPC分类号： C05B7/00

    CPC分类号： C05B3/00 ,  C05B7/00 ,  C05C1/00 ,  C05C3/00 ,  C05D1/00

    摘要： Method for producing high N-NP or high N-NPK fertilizer preferably with N ≥ 25 weight % and having less than 70 weight % ammonium nitrate, from a melt comprising ammonium nitrate, ammonium phosphates, and optionally also dicalcium phosphate and other minor components. Solid ammonium sulphate is mixed into an almost water free NP melt either alone or together with a potassium salt, where after the melt is particulated, preferably by prilling. The products obtained are free-flowing, non-oxidising and non-detonable.

    摘要翻译： 从包含硝酸铵，磷酸铵和任选还有磷酸二钙和其它次要组分的熔体中制备优选N = 25重量％且具有小于70重量％硝酸铵的高N-NP或高N-NPK肥料的方法。 固体硫酸铵单独或与钾盐一起混合成几乎无水的NP熔体，其中熔体被雾化后，优选通过造粒。 获得的产品是自由流动的，非氧化的和不可引爆的。

    METHOD FOR PRODUCING ANHYDROUS CALCIUM NITRATE POWDER
    7.
    发明公开
    METHOD FOR PRODUCING ANHYDROUS CALCIUM NITRATE POWDER 审中-公开
    生产无水硝酸钙粉末的方法

    公开(公告)号：EP3157871A1

    公开(公告)日：2017-04-26

    申请号：EP15732589.5

    申请日：2015-06-23

    申请人： YARA International ASA

    发明人： OBRESTAD, Torstein

    IPC分类号： C01F11/44

    摘要： The invention relates to a method for producing an anhydrous powder having a calcium nitrate content of between 92 and 99.9 weight %, a water content of between 0.1 and 8 weight %; and a particle size of between 0.05 and 1.5 mm, wherein the method comprises the step of subjecting a calcium nitrate solution having a water content of between 70 and 15 weight % and a calcium nitrate content of between 30 and 85 weight % to a drying step in an industrial turbo-dryer, resulting in the anhydrous calcium nitrate powder. The invention furthermore relates to such an anhydrous calcium nitrate powder and the use of an industrial turbo-dryer to produce such anhydrous calcium nitrate powder.

    摘要翻译： 本发明涉及一种生产硝酸钙含量为92-99.9重量％，含水量为0.1-8重量％的无水粉末的方法， 粒径为0.05-1.5mm，其中该方法包括使含水量为70-15重量％且硝酸钙含量为30-85重量％的硝酸钙溶液经过干燥步骤 在工业涡轮干燥器中，产生无水硝酸钙粉末。 本发明还涉及这种无水硝酸钙粉末和使用工业涡轮干燥器来生产这种无水硝酸钙粉末。

    PRODUCTION OF NPK OR NP MATERIAL CONTAINING POLYPHOSPHATES
    8.
    发明公开
    PRODUCTION OF NPK OR NP MATERIAL CONTAINING POLYPHOSPHATES 有权
    含有多磷酸盐的NPK或NP材料的生产

    公开(公告)号：EP2091891A2

    公开(公告)日：2009-08-26

    申请号：EP07851982.4

    申请日：2007-11-28

    申请人： YARA International ASA

    发明人： OBRESTAD, Torstein ,  OKSVIK, Arne

    IPC分类号： C05B11/06

    CPC分类号： C01B25/405 ,  C05B11/06 ,  C05B13/06 ,  C05C3/00 ,  C05D1/00

    摘要： It is disclosed a method for the nitrosphate process to produce NPK or NP material with polyphosphates by reducing the pressure in the evaporation stage and / or increasing the temperature in the evaporation stage and/or controlling the temperature in the crystallization stage wherein a material is produced containing a mixture of MAP, DAP, DCP and optionally apatite and a controlled amount of condensed phosphates (polyphosphates), and N/P and Ca/P ratios of the NPK material are N/P ≥ 0.95 and 1.0 ≥ Ca/P ≥ 0.2 and products thereof.

    摘要翻译： 本发明公开了一种用于通过降低蒸发阶段中的压力和/或增加蒸发阶段中的温度和/或控制其中生产材料的结晶阶段中的温度用多磷酸盐生产NPK或NP材料的方法， 含有MAP，DAP，DCP和任选磷灰石的混合物以及受控量的缩合磷酸盐（聚磷酸盐）以及NPK材料的N / P和Ca / P比为N /P≥0.95和1.0≥Ca/P≥0.2 及其产品。