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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：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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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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5.发明授权Method of decarbonation and its use in producing crystalline sodium sulfite or other alkali products 有权脱碳方法及其在生产结晶亚硫酸钠或其他碱产品中的应用公开(公告)号：US08366793B2
公开(公告)日：2013-02-05
申请号：US12741983
申请日：2008-11-12
IPC分类号： C01D5/00
CPC分类号： B01D19/0036 , B01D9/0031 , B01D19/0005 , B01D19/001 , B01D19/0073 , C01B32/50 , C01D5/14
摘要： A sodium sulfite liquor is formed by reacting sodium carbonate with sulfur dioxide. A CO2 byproduct may be removed from the formed liquor by injecting a stripping gas (e.g., steam and/or air) into the liquor, either into a transfer pipe or into a tank that is vented; by increasing the liquor temperature; and/or by reducing the liquor pressure. The decarbonated sodium sulfite liquor with a reduced carbon dioxide content is introduced into a crystallizer connected to a circulation loop comprising a heater and/or a filter. Additional decarbonation by heating, stripping and/or depressurization of the liquor may be carried out in a circulation loop connected to the crystallizer. The condensing side of the heater may be vented. The flow rate of the circulation loop and/or heater temperature differences may be monitored. Additional CO2 may be vented from a holding tank to maintain circulation loop flows and heater temperature differences.
摘要翻译： 通过使碳酸钠与二氧化硫反应形成亚硫酸钠液体。 通过将汽提气体（例如蒸汽和/或空气）注入到液体中，或将其转移到输送管中或排出的罐中，可将CO 2副产物从形成的液体中除去; 通过增加液温; 和/或通过降低液体压力。 将具有降低的二氧化碳含量的脱碳酸钠亚硫酸钠溶液引入连接到包括加热器和/或过滤器的循环回路的结晶器中。 通过液体的加热，汽提和/或减压进一步的脱碳可以在连接到结晶器的循环回路中进行。 加热器的冷凝侧可能被排出。 可以监测循环回路的流量和/或加热器温度差。 额外的二氧化碳可以从储罐中排出，以保持循环回路流动和加热器温度差异。
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6.发明申请Method of decarbonation and its use in producing crystalline sodium sulfite or other alkali products 有权脱碳方法及其在生产结晶亚硫酸钠或其他碱产品中的应用公开(公告)号：US20100239477A1
公开(公告)日：2010-09-23
申请号：US12741983
申请日：2008-11-12
IPC分类号： C22B26/10
CPC分类号： B01D19/0036 , B01D9/0031 , B01D19/0005 , B01D19/001 , B01D19/0073 , C01B32/50 , C01D5/14
摘要： A sodium sulfite liquor is formed by reacting sodium carbonate with sulfur dioxide. A CO2 byproduct may be removed from the formed liquor by injecting a stripping gas (e.g., steam and/or air) into the liquor, either into a transfer pipe or into a tank that is vented; by increasing the liquor temperature; and/or by reducing the liquor pressure. The decarbonated sodium sulfite liquor with a reduced carbon dioxide content is introduced into a crystallizer connected to a circulation loop comprising a heater and/or a filter. Additional decarbonation by heating, stripping and/or depressurization of the liquor may be carried out in a circulation loop connected to the crystallizer. The condensing side of the heater may be vented. The flow rate of the circulation loop and/or heater temperature differences may be monitored. Additional CO2 may be vented from a holding tank to maintain circulation loop flows and heater temperature differences.
摘要翻译： 通过使碳酸钠与二氧化硫反应形成亚硫酸钠液体。 通过将汽提气体（例如蒸汽和/或空气）注入到液体中，或将其转移到输送管中或排出的罐中，可将CO 2副产物从形成的液体中除去; 通过增加液温; 和/或通过降低液体压力。 将具有降低的二氧化碳含量的脱碳酸钠亚硫酸钠溶液引入连接到包括加热器和/或过滤器的循环回路的结晶器中。 通过液体的加热，汽提和/或减压进一步的脱碳可以在连接到结晶器的循环回路中进行。 加热器的冷凝侧可能被排出。 可以监测循环回路的流量和/或加热器温度差。 额外的二氧化碳可以从储罐中排出，以保持循环回路流动和加热器温度差异。
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