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公开(公告)号：US09908787B2
公开(公告)日：2018-03-06
申请号：US15311528
申请日：2015-06-23
发明人： Torstein Obrestad
CPC分类号： C01F11/44 , C01P2004/61 , C01P2006/82 , F26B3/06 , F26B11/028 , F26B11/0445
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.
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公开(公告)号：US20170096347A1
公开(公告)日：2017-04-06
申请号：US15311528
申请日：2015-06-23
发明人： Torstein Obrestad
CPC分类号： C01F11/44 , C01P2004/61 , C01P2006/82 , F26B3/06 , F26B11/028 , F26B11/0445
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.
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公开(公告)号：US4834952A
公开(公告)日：1989-05-30
申请号：US20363
申请日：1987-03-02
申请人： Alain Rollat , Jean-Louis Sabot
发明人： Alain Rollat , Jean-Louis Sabot
IPC分类号： C01F11/00 , C01F11/16 , C01F11/18 , C01F11/32 , C01F11/36 , C01F11/44 , C22B3/32 , C22B3/36 , C22B3/38
CPC分类号： C01F11/188 , C01F11/005 , C01F11/32 , C01F11/44 , C22B3/0024 , C22B3/0037 , C22B3/0067 , C22B3/0087 , C01P2006/80 , Y02P10/234
摘要： Purified barium salts essentially devoid of strontium impurities, e.g., highly pure barium carbonate, are produced by liquid/liquid extracting an aqueous solution of impure barium values with an organic solvent medium which comprises at least one water-insoluble carboxylic acid, phosphonic acid monoester, or substituted 8-hydroxyquinoline extractant. The mixture of extraction is separated into a purified aqueous phase containing the desired barium salt values and an organic phase containing the impurity values sought to be removed.
摘要翻译： 通过用含有至少一种水不溶性羧酸，膦酸单酯，有机溶剂的有机溶剂介质的液/液萃取不纯钡值的水溶液来制备基本上不含锶杂质的纯碱钡盐，例如高纯度碳酸钡， 或取代的8-羟基喹啉萃取剂。 将萃取混合物分离成含有所需钡盐值的纯化水相和含有寻求除去的杂质值的有机相。
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4.发明授权Device for the crystallization by heat exchange of a solute in solution in a liquor 失效用于通过溶液中溶液的热交换进行结晶的装置
公开(公告)号：US3694167A
公开(公告)日：1972-09-26
申请号：US3694167D
申请日：1969-12-30
申请人： FRANCOIS LAURENTY
CPC分类号： C05B11/06 , B01D9/0009 , B01D9/0036 , B01D9/004 , B01D9/0059 , C01F11/44
摘要： A CRYSTALLIZATION DEVICE IS PROVIDED HAVING A CRYSTALLIZATION ENCLOSURE WHICH IS DIVIDED INTO A PLURALITY OF VERTICAL STAGES BY A PLURALITY OF FLUIDIZATION CONTAINERS. LIQUOR FOR TREATMENT IS INTRODUCED AT THE LOWER PORTION OF THE ENCLOSURE AND EXHAUSTED LIQUOR IS REMOVED AT THE UPPER PORTION OF THE ENCLOSURE. A HEAT EXCHANGE FLUID, FOR EXAMPLE A COOLANT, IS CIRCULATED IN THE ENCLOSURE WHICH IS CHOSEN FOR ITS IMMISCIBILITY AND CHEMICAL NON-REACTIVITY WITH THE LIQUOR. FULLY GROWN CRYSTALS ARE USED TO
COOL THE COOLANT BEFORE BEING REMOVED FROM THE ENCLOSURE IN ORDER TO MINIMIZE ENERGY LOSSES.-
5.发明授权公开(公告)号：US07500995B2
公开(公告)日：2009-03-10
申请号：US10533417
申请日：2002-11-01
IPC分类号： C01F11/32
CPC分类号： C01F5/38 , C01B21/48 , C01F11/44 , C01P2004/50 , C05C1/00 , C05C1/02 , C05C5/02 , C05C5/04 , C05D3/00 , C05C7/00
摘要： The invention concerns a method for the production of nitrate containing products (fertilizers, technical products) from undercooling melts, wherein a XN—water solution is evaporated up to a content of 50-99.8 weight % XN, where X is one or more selected from Ca, Mg, NH, Na and K, and N means nitrate. The preferred range of XN is 70-99.5 weight %. The melt is cooled down to and kept at a temperature at or below the crystallisation point and finely divided solid XN powder consisting of the equilibrium phases is added to the melt. Melt drops are then formed and allowed to cool and solidify during up to 70 seconds. It is preferred to use a cooling belt for solidification of the particles. The belt is cooled by air, water, oil or another medium.
摘要翻译： 本发明涉及一种从过冷却熔体制备含硝酸盐的产品（肥料，技术产品）的方法，其中将XN-水溶液蒸发至50-99.8重量％XN的含量，其中X为一个或多个选自 Ca，Mg，NH，Na和K，N表示硝酸盐。 XN的优选范围为70-99.5重量％。 将熔体冷却至并保持在结晶点或低于结晶点的温度，并将由平衡相组成的细碎的固体XN粉末加入到熔体中。 然后形成熔滴，并允许在70秒内冷却和固化。 优选使用冷却带固化颗粒。 皮带由空气，水，油或其他介质冷却。
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6.发明授权
公开(公告)号：US4569677A
公开(公告)日：1986-02-11
申请号：US583039
申请日：1984-02-23
CPC分类号： C01F11/44
摘要： Separating Ca(NO.sub.3).sub.2.4H.sub.2 O from a nitrophosphate digestion liquor by crystallization, wherein Ca(NO.sub.3).sub.2.4H.sub.2 O seeding material with a particle size smaller than 100 .mu.m is added to this liquor at a temperature of 0.degree.,1.degree.-2.degree. C. lower than the saturation temperature, the resulting liquor is batchwise cooled, and the Ca(NO.sub.3).sub.2.4H.sub.2 O crystallized out is separated from the cooled liquor.The Ca(NO.sub.3 ).sub.2.4H.sub.2 O is substantially crystallized out without excessive cooling as very coarse and uniform particles which can be easily separated out.
摘要翻译： 通过结晶从硝酸磷酸盐消解液中分离出Ca（NO 3）2·4H 2 O，其中在0℃，1℃-2℃的温度下向其中加入粒径小于100微米的Ca（NO 3）2·4H 2 O种子材料 C.低于饱和温度，将所得液体分批冷却，结晶出的Ca（NO 3）2·4H 2 O与冷却液分离。 Ca（NO 3）2·4H 2 O基本上结晶出来，而不会过度冷却，因为非常粗糙和均匀的颗粒可以容易地分离出来。
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公开(公告)号：US2819955A
公开(公告)日：1958-01-14
申请号：US33716053
申请日：1953-02-16
申请人： STAMICARBON
发明人： WILLEM SLOT
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公开(公告)号：US20060123602A1
公开(公告)日：2006-06-15
申请号：US10536412
申请日：2003-11-24
申请人： Johannes Eygelaar
发明人： Johannes Eygelaar
CPC分类号： C01F11/44 , B01J2/16 , B01J8/26 , B01J8/34 , B01J19/26 , B01J2208/00371 , B01J2208/00681 , B01J2208/00699 , C01B21/48 , C01C1/18 , C01F5/38 , C01P2004/50
摘要： This invention relates to an apparatus (10) for producing nitrate granules. The apparatus (10) includes a first fluidised bed (12) which is supplied with air (18) that has been conditioned to a relative humidity of less than 30% at 40 (C and heated to a temperature of 40 (C to 100 (C. One or more spray nozzles (26) are provided for spraying a nitrate melt into the first fluidised bed (12) to form nitrate granules. The apparatus (10) also includes a second fluidised bed (14) which is in direct communication with the first fluidised bed (12). Nitrate granules formed in the first fluidised bed (12) flow directly to the second fluidised bed (14) where they are cooled to a temperature of less than 60 (C. The nitrate granules produced by the apparatus (10) and process of the invention are spherical in shape, hard and dry and do not break down easily during handling. A main advantage of the apparatus (10) according to the invention is that it is compact, capable of very high product rates, and can be operated by one operator.
摘要翻译： 本发明涉及一种用于生产硝酸盐颗粒的装置（10）。 装置（10）包括第一流化床（12），该第一流化床（12）被供给空气（18），空气被调节至相对湿度小于30％，在40℃（C，加热至40℃（C至100（ C.提供一个或多个喷嘴（26），用于将硝酸盐熔体喷射到第一流化床（12）中以形成硝酸盐颗粒。装置（10）还包括第二流化床（14），其与 第一流化床（12），形成在第一流化床（12）中的硝酸盐颗粒直接流到第二流化床（14），在那里它们被冷却到小于60℃的温度。（C） （10）和本发明的方法是球形的，坚硬和干燥的，并且在处理过程中不容易分解。根据本发明的装置（10）的主要优点是其紧凑，能够具有非常高的产品率 ，并可由一名操作员操作。
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公开(公告)号：US2375898A
公开(公告)日：1945-05-15
申请号：US41978841
申请日：1941-11-19
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