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1.发明授权Sodium bicarbonate product with excellent flowability and its method of manufacture 有权具有优异流动性的碳酸氢钠产品及其制造方法公开(公告)号：US09051188B2
公开(公告)日：2015-06-09
申请号：US14119520
申请日：2012-06-01
CPC分类号： C01D7/10 , B01D53/02 , B01D53/40 , B01D53/508 , B01D53/62 , B01D2251/304 , B01D2251/606 , B01D2257/2045 , B01D2257/302 , B01D2257/504 , B01J20/043 , B01J20/28004 , B01J20/28011 , B01J20/28019 , C01D7/00 , C01P2004/03 , C01P2004/30 , C01P2004/32 , C01P2004/54 , C01P2004/60 , C01P2004/61 , C01P2006/20 , C01P2006/80 , Y02C10/04 , Y02P20/152 , Y10T428/2982
摘要： A particulate sodium bicarbonate product with an excellent flowability characterized by an angle of repose less than 30 degrees. An angle of repose of less than 27.5 is particularly good. The product is preferably in the form of ovoid or spherical particles, in that the particles have a mean axial ratio of at least 0.5. In some embodiments, the sodium bicarbonate product has a smooth particle surface in which less than 75% of the particle surface is covered with spikes. The particles may have a mean diameter D50 of at least 75 microns but less than 300 microns. The particulate sodium bicarbonate product comprises inorganic and organic impurities embedded in its polycrystalline structure, for example at least 75 ppm TOC; or at least 30 ppm Ca; or from 1 to 18 ppm Mg; or more than 0.6 g/kg NaCl; and/or from 100 to less than 500 ppm Si. A process for manufacturing such product, and its use for the treatment of pollutants in gases such as removal of acid gas.
摘要翻译： 具有优异流动性的颗粒状碳酸氢钠产品，其特征在于休止角小于30度。 小于27.5的休止角特别好。 产物优选为卵形或球形颗粒的形式，因为颗粒的平均轴向比至少为0.5。 在一些实施方案中，碳酸氢钠产物具有光滑的颗粒表面，其中少于75％的颗粒表面被尖峰覆盖。 颗粒可以具有至少75微米但小于300微米的平均直径D50。 颗粒状碳酸氢钠产品包含嵌入其多晶结构中的无机和有机杂质，例如至少75ppm TOC; 或至少30ppm Ca; 或1〜18ppm的Mg; 或大于0.6g / kg NaCl; 和/或100至小于500ppm Si。 制造这种产品的方法及其用于处理气体中的污染物例如除去酸性气体的用途。
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公开(公告)号：US07473407B2
公开(公告)日：2009-01-06
申请号：US10993315
申请日：2004-11-19
IPC分类号： B03C1/00
摘要： A process for the beneficiation of trona includes supplying a trona feedstream that is crushed and dried. The trona is then separated into a first size fraction and a second size fraction. Impurities are removed from the first size fraction using at least one magnetic separator. The magnetic separator includes a plurality of stages. Each stage includes a conveyor system comprising a first end, a second end, and a conveyor belt. Each stage also includes a magnetic roller disposed at the second end of the conveyor system and a splitter disposed adjacent the second end of the system for separating a fraction of magnetic impurities from the trona to create a beneficiated fraction. At least one conveyor belt is deionized. Airborne dust particles are removed from an area surrounding at least one conveyor system.
摘要翻译： 选择天然碱的方法包括提供被粉碎和干燥的天然碱原料流。 然后将天然碱分离成第一尺寸级分和第二尺寸级分。 使用至少一个磁选机从第一尺寸部分除去杂质。 磁选机包括多个级。 每个阶段包括一个包括第一端，第二端和传送带的传送系统。 每个阶段还包括设置在输送系统的第二端的磁性辊和与系统的第二端相邻设置的分离器，用于将一部分磁性杂质与天然碱分离以产生选择的部分。 至少一个传送带是去离子的。 从至少一个传送系统周围的区域去除空气中的尘埃颗粒。
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3.发明授权Removal of impurities in the production of crystalline sodium carbonate, bicarbonate, or sulfite 有权在生产结晶碳酸钠，碳酸氢盐或亚硫酸盐时除去杂质公开(公告)号：US08337571B2
公开(公告)日：2012-12-25
申请号：US12718098
申请日：2010-03-05
IPC分类号： B01D9/00
摘要： A magnesium treatment for removing water-soluble impurities in a process for making crystalline sodium carbonate, bicarbonate, or sulfite. A waste comprising such impurities is treated with a magnesium compound to form water-insoluble matter which is removed to form a purified solution. The treatment may be performed on a solution which contains the waste and optionally dissolved calcined trona. The purified solution may be used as a feedstock to form crystalline soda ash, and/or used as a reactant to produce crystalline sodium sulfite or bicarbonate via reaction with SO2 or CO2. In preferred embodiments, the waste may comprise a purge or weak liquor, a reclaimed solid, or combinations thereof. The water-soluble impurities may be silicates and/or foam-causing impurities, and the waste may contain sodium bicarbonate, sodium sesquicarbonate, and/or one or more sodium carbonate hydrates, such as decahydrate.
摘要翻译： 在制造结晶碳酸钠，碳酸氢盐或亚硫酸盐的方法中除去水溶性杂质的镁处理。 包含这种杂质的废物用镁化合物处理以形成水不溶性物质，其被除去以形成纯化溶液。 处理可以在含有废物和任选溶解的煅烧天然碱的溶液上进行。 纯化的溶液可以用作原料以形成结晶苏打灰，和/或用作反应物以通过与SO 2或CO 2反应产生结晶亚硫酸钠或碳酸氢盐。 在优选的实施方案中，废物可以包含吹扫或弱液，再生固体或其组合。 水溶性杂质可以是硅酸盐和/或引起泡沫的杂质，并且废物可以含有碳酸氢钠，倍半碳酸钠和/或一种或多种碳酸钠水合物，例如十水合物。
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4.发明申请Removal of impurities in the production of crystalline sodium carbonate, bicarbonate, or sulfite 有权在生产结晶碳酸钠，碳酸氢盐或亚硫酸盐时除去杂质公开(公告)号：US20100226840A1
公开(公告)日：2010-09-09
申请号：US12718098
申请日：2010-03-05
摘要： A magnesium treatment for removing water-soluble impurities in a process for making crystalline sodium carbonate, bicarbonate, or sulfite. A waste comprising such impurities is treated with a magnesium compound to form water-insoluble matter which is removed to form a purified solution. The treatment may be performed on a solution which contains the waste and optionally dissolved calcined trona. The purified solution may be used as a feedstock to form crystalline soda ash, and/or used as a reactant to produce crystalline sodium sulfite or bicarbonate via reaction with SO2 or CO2. In preferred embodiments, the waste may comprise a purge or weak liquor, a reclaimed solid, or combinations thereof. The water-soluble impurities may be silicates and/or foam-causing impurities, and the waste may contain sodium bicarbonate, sodium sesquicarbonate, and/or one or more sodium carbonate hydrates, such as decahydrate.
摘要翻译： 在制造结晶碳酸钠，碳酸氢盐或亚硫酸盐的方法中除去水溶性杂质的镁处理。 包含这种杂质的废物用镁化合物处理以形成水不溶性物质，其被除去以形成纯化溶液。 处理可以在含有废物和任选溶解的煅烧天然碱的溶液上进行。 纯化的溶液可以用作原料以形成结晶苏打灰，和/或用作反应物以通过与SO 2或CO 2反应产生结晶亚硫酸钠或碳酸氢盐。 在优选的实施方案中，废物可以包含吹扫或弱液，再生固体或其组合。 水溶性杂质可以是硅酸盐和/或引起泡沫的杂质，并且废物可以含有碳酸氢钠，倍半碳酸钠和/或一种或多种碳酸钠水合物，例如十水合物。
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公开(公告)号：US07770735B2
公开(公告)日：2010-08-10
申请号：US11719706
申请日：2005-11-15
IPC分类号： B03C1/30
CPC分类号： B03C1/03 , B03C1/16 , B03C1/18 , B03C1/26 , C01D7/126 , C22B1/00 , C22B7/005 , C22B26/10 , Y02P10/212
摘要： A process for beneficiation of trona includes supplying a trona feedstream that is crushed and dried. The trona is then separated into a first size fraction and a second size fraction. Impurities are removed from the first size fraction using at least one magnetic separator. The magnetic separator includes a plurality of stages. Each stage includes a conveyer system including a first end, a second end, and a conveyer belt. Each stage also includes a magnetic roller disposed at the second end of the conveyer system and a splitter disposed adjacent the second end of the conveyer system for separating a fraction of magnetic impurities from the trona to create a beneficiated fraction. At least one conveyer belt is deionized. Airborne dust particles are removed from an area surrounding at least one conveyer system.
摘要翻译： 天然碱的选矿方法包括提供被粉碎和干燥的天然碱原料流。 然后将天然碱分离成第一尺寸级分和第二尺寸级分。 使用至少一个磁选机从第一尺寸部分除去杂质。 磁选机包括多个级。 每个阶段包括一个包括第一端，第二端和输送带的输送系统。 每个阶段还包括设置在输送系统的第二端处的磁性辊和邻近输送系统的第二端设置的分离器，用于将一部分磁性杂质与天然碱分离以产生精选馏分。 至少一个输送带是去离子的。 从至少一个输送系统周围的区域去除空气中的尘埃颗粒。
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公开(公告)号：US20080277321A1
公开(公告)日：2008-11-13
申请号：US11719706
申请日：2005-11-15
IPC分类号： B03C1/00
CPC分类号： B03C1/03 , B03C1/16 , B03C1/18 , B03C1/26 , C01D7/126 , C22B1/00 , C22B7/005 , C22B26/10 , Y02P10/212
摘要： A process for beneficiation of trona includes supplying a trona feedstream that is crushed and dried. The trona is then separated into a first size fraction and a second size fraction. Impurities are removed from the first size fraction using at least one magnetic separator. The magnetic separator includes a plurality of stages. Each stage includes a conveyer system including a first end, a second end, and a conveyer belt. Each stage also includes a magnetic roller disposed at the second end of the conveyer system and a splitter disposed adjacent the second end of the conveyer system for separating a fraction of magnetic impurities from the trona to create a beneficiated fraction. At least one conveyer belt is deionized. Airborne dust particles are removed from an area surrounding at least one conveyer system.
摘要翻译： 天然碱的选矿方法包括提供被粉碎和干燥的天然碱原料流。 然后将天然碱分离成第一尺寸级分和第二尺寸级分。 使用至少一个磁选机从第一尺寸部分除去杂质。 磁选机包括多个级。 每个阶段包括一个包括第一端，第二端和输送带的输送系统。 每个阶段还包括设置在输送系统的第二端处的磁性辊和邻近输送系统的第二端设置的分离器，用于将一部分磁性杂质与天然碱分离以产生精选馏分。 至少一个输送带是去离子的。 从至少一个输送系统周围的区域去除空气中的尘埃颗粒。
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公开(公告)号：US5759507A
公开(公告)日：1998-06-02
申请号：US770594
申请日：1996-12-19
摘要： This invention provides a method for the production of dense soda ash by reacting sodium carbonate decahydrate with a light soda ash or soda ash fines at an elevated temperature to produce sodium carbonate monohydrate crystals, and drying the sodium carbonate monohydrate to produce dense soda ash.
摘要翻译： 本发明提供了一种通过使碳酸钠十水合物与轻质苏打灰或苏打粉在高温下反应生成碳酸钠一水合物晶体并干燥碳酸钠一水合物以产生致密苏打灰的方法。
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公开(公告)号：US5989505A
公开(公告)日：1999-11-23
申请号：US617394
申请日：1996-03-18
摘要： A process for recovery of alkali values from trona in which trona is dissolved, the sodium carbonate in the feed solution is converted to sodium bicarbonate by introducing carbon dioxide, sodium bicarbonate is crystallized and separated from a mother liquor, and sodium bicarbonate in the mother liquor is converted to sodium carbonate by introducing air to form a recirculating dissolving solution which is used to dissolve the trona.
摘要翻译： 一种从天然碱溶解的天然碱中回收碱值的方法，将进料溶液中的碳酸钠通过引入二氧化碳转化为碳酸氢钠，将碳酸氢钠从母液中结晶并分离，并将母液中的碳酸氢钠 通过引入空气形成用于溶解天然碱的再循环溶解溶液而转化为碳酸钠。
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9.发明授权Impurities removal from waste solids in the production of soda ash, sodium bicarbonate and/or other derivatives 有权在苏打灰，碳酸氢钠和/或其他衍生物的生产中从废物固体中除去杂质公开(公告)号：US08771622B2
公开(公告)日：2014-07-08
申请号：US13099501
申请日：2011-05-03
摘要： A method for removing impurities from a waste solid to provide at least a portion of a suitable crystallizer feed to a process for making crystalline sodium carbonate, bicarbonate, and/or other derivatives. The method comprises: contacting the waste solid with a leach solution to dissolve at least one impurity and dissolving the resulting leached residue. Leaching may include heap percolation. The leach solution may comprise a crystallizer purge liquor, a process waste effluent, a mine water, or mixtures thereof. The method may further comprise adding a magnesium compound to the resulting leached residue during or after its dissolution to remove another impurity. The waste solid preferably comprises a pond solid containing such impurities. The pond solid may be recovered from a pond receiving crystallizer purge liquor(s) and/or other process waste effluent(s). The pond solid may contain sodium carbonate, any hydrate thereof, sodium bicarbonate, and/or sodium sesquicarbonate. The impurities to be removed may comprise sodium chloride, sodium sulfate, silicates, and/or organics.
摘要翻译： 从废弃固体中除去杂质的方法，以提供至少一部分合适的结晶器进料，以制备结晶碳酸钠，碳酸氢盐和/或其它衍生物的方法。 该方法包括：使废弃物与浸出溶液接触以溶解至少一种杂质并溶解所产生的浸出残渣。 浸出可能包括堆渗。 浸出溶液可以包括结晶器清洗液，工艺废物流出物，矿井水或其混合物。 该方法可以进一步包括在其溶解期间或之后向所产生的浸出残渣中加入镁化合物以除去另一种杂质。 废固体优选包含含有这种杂质的池塘固体。 池塘固体可以从接收结晶器清洗液和/或其它工艺废物流出物的池中回收。 池塘固体可以含有碳酸钠，其任何水合物，碳酸氢钠和/或倍半碳酸钠。 待除去的杂质可包括氯化钠，硫酸钠，硅酸盐和/或有机物。
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10.发明申请Impurities removal from waste solids in the production of soda ash, sodium bicarbonate and/or other derivatives 有权在苏打灰，碳酸氢钠和/或其他衍生物的生产中从废物固体中除去杂质公开(公告)号：US20110274599A1
公开(公告)日：2011-11-10
申请号：US13099501
申请日：2011-05-03
摘要： A method for removing impurities from a waste solid to provide at least a portion of a suitable crystallizer feed to a process for making crystalline sodium carbonate, bicarbonate, and/or other derivatives. The method comprises: contacting the waste solid with a leach solution to dissolve at least one impurity and dissolving the resulting leached residue. Leaching may include heap percolation. The leach solution may comprise a crystallizer purge liquor, a process waste effluent, a mine water, or mixtures thereof. The method may further comprise adding a magnesium compound to the resulting leached residue during or after its dissolution to remove another impurity. The waste solid preferably comprises a pond solid containing such impurities. The pond solid may be recovered from a pond receiving crystallizer purge liquor(s) and/or other process waste effluent(s). The pond solid may contain sodium carbonate, any hydrate thereof, sodium bicarbonate, and/or sodium sesquicarbonate. The impurities to be removed may comprise sodium chloride, sodium sulfate, silicates, and/or organics.
摘要翻译： 从废弃固体中除去杂质的方法，以提供至少一部分合适的结晶器进料，以制备结晶碳酸钠，碳酸氢盐和/或其它衍生物的方法。 该方法包括：使废弃物与浸出溶液接触以溶解至少一种杂质并溶解所产生的浸出残渣。 浸出可能包括堆渗。 浸出溶液可以包括结晶器清洗液，工艺废物流出物，矿井水或其混合物。 该方法可以进一步包括在其溶解期间或之后向所产生的浸出残渣中加入镁化合物以除去另一种杂质。 废固体优选包含含有这种杂质的池塘固体。 池塘固体可以从接收结晶器清洗液和/或其它工艺废物流出物的池中回收。 池塘固体可以含有碳酸钠，其任何水合物，碳酸氢钠和/或倍半碳酸钠。 待除去的杂质可包括氯化钠，硫酸钠，硅酸盐和/或有机物。
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