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1. 发明授权

US5911959A Method for purification and production of saline minerals from trona 失效
标题翻译：从天然碱中净化和生产盐水矿物的方法
公开(公告)号：US5911959A
公开(公告)日：1999-06-15
申请号：US967281
申请日：1997-11-07
申请人： John S. Wold , Wayne C. Hazen , Rudolph Pruszko , Roland Schmidt , Dale Lee Denham, Jr.
发明人： John S. Wold , Wayne C. Hazen , Rudolph Pruszko , Roland Schmidt , Dale Lee Denham, Jr.
IPC分类号： B03B1/00 , B03B9/00 , C01D7/00 , C01D7/12 , C22B7/00 , C22B26/10
CPC分类号： B03B9/00 , B03B1/00 , C01D7/00 , C01D7/126 , C22B7/005 , Y02P10/212
摘要： Disclosed are a variety of processes for the purification of saline minerals and in particular, trona. Some of the processes include a combination wet and dry recovery process which results in high recovery and purification at relatively low cost. The dry separation methods can include density separation, magnetic separation and electrostatic separation. Other processes include a modified slush process for the purification of calcined trona (sodium carbonate) by the introduction of anhydrous sodium carbonate into a saturated brine solution and subsequent separation of insoluble impurities.
摘要翻译：公开了用于净化盐水矿物质，特别是天然碱的各种方法。一些方法包括湿和干回收方法的组合，其以相对低的成本导致高回收和纯化。干法分离方法可包括密度分离，磁分离和静电分离。其他方法包括通过将无水碳酸钠引入饱和盐水溶液中并随后分离不溶性杂质来纯化煅制天然碱（碳酸钠）的改进的糊化方法。

2. 发明授权

US06479025B2 Process for the production of sodium carbonate 失效
标题翻译：碳酸钠生产工艺
公开(公告)号：US06479025B2
公开(公告)日：2002-11-12
申请号：US09151694
申请日：1998-09-11
申请人： Dale Lee Denham, Jr. , Rudolph Pruszko , Wayne C. Hazen
发明人： Dale Lee Denham, Jr. , Rudolph Pruszko , Wayne C. Hazen
IPC分类号： C01D700
CPC分类号： C01D7/00 , C01D7/35
摘要： A process for the production of sodium carbonate monohydrate is disclosed. The process includes heating a feed stream containing trona and insoluble impurities in a calcining apparatus to a temperature of less than about 350° C. to form anhydrous sodium carbonate. The anhydrous sodium carbonate is contacted with a saturated sodium carbonate brine solution to form sodium carbonate monohydrate crystals. Sodium carbonate monohydrate crystals are separated from insoluble impurities.
摘要翻译：公开了一种生产碳酸钠一水合物的方法。该方法包括在煅烧装置中将含有天然碱和不溶性杂质的进料流加热至低于约350℃的温度以形成无水碳酸钠。将无水碳酸钠与饱和碳酸钠盐水溶液接触以形成碳酸钠一水合物晶体。将碳酸钠一水合物晶体与不溶性杂质分离。

3. 发明授权

US06464736B1 Recrystallization process 失效
标题翻译：重结晶过程
公开(公告)号：US06464736B1
公开(公告)日：2002-10-15
申请号：US09521828
申请日：2000-03-09
申请人： Wayne C. Hazen , Dale Lee Denham, Jr. , David R. Baughman , Rudolph Pruszko
发明人： Wayne C. Hazen , Dale Lee Denham, Jr. , David R. Baughman , Rudolph Pruszko
IPC分类号： B01D900
CPC分类号： C01D7/24 , B01D9/005 , B01D9/0059 , C01D7/00
摘要： The present invention provides a process for producing crystals of a polymorphic compound in a first crystal structure by introduction of the compound in a second crystal structure into a saturated brine solution of the compound under conditions in which formation of the first crystal structure is favored and without evaporation or changes in temperature. As the second crystal structure dissolves, the brine becomes supersaturated resulting in relief of supersaturation by formation of crystals of the first crystal structure. The process includes controlling supersaturation and its relief to achieve growth of existing crystals of the first crystal structure rather than nucleation and formation of new crystals. The resulting crystals are separated from insoluble impurities on a size separation basis.
摘要翻译：本发明提供一种通过在第一晶体结构中形成第一晶体结构的条件下将第二晶体结构中的化合物引入该化合物的饱和盐水溶液中并且没有蒸发或温度变化。当第二晶体结构溶解时，盐水变得过饱和，从而通过形成第一晶体结构的晶体来缓解过饱和。该方法包括控制过饱和及其释放以实现第一晶体结构的现有晶体的生长，而不是成核并形成新晶体。将得到的晶体以不同的杂质以尺寸分离的形式分离。

4. 发明授权

US06284005B1 Sodium carbonate recrystallization 有权
标题翻译：碳酸钠重结晶
公开(公告)号：US06284005B1
公开(公告)日：2001-09-04
申请号：US09239441
申请日：1999-01-28
申请人： Wayne C. Hazen , Dale Lee Denham, Jr. , Rudolph Pruszko , David R. Baughman , Ralph B. Tacoma
发明人： Wayne C. Hazen , Dale Lee Denham, Jr. , Rudolph Pruszko , David R. Baughman , Ralph B. Tacoma
IPC分类号： C01D1508
CPC分类号： C01D7/24 , C01D7/35
摘要： The present invention provides a process for producing sodium carbonate monohydrate crystals by introduction of anhydrous sodium carbonate into a saturated sodium carbonate brine solution under conditions in which sodium carbonate monohydrate formation is favored. As the anhydrous sodium carbonate dissolves, the brine becomes supersaturated resulting in relief of supersaturation by formation of sodium carbonate monohydrate crystals. The process includes controlling supersaturation and its relief to achieve growth of existing sodium carbonate monohydrate crystals rather than nucleation and formation of new sodium carbonate monohydrate crystals. The resulting crystals are separated from insoluble impurities on a size separation basis.
摘要翻译：本发明提供了一种在碳酸钠一水合物形成有利的条件下，通过将无水碳酸钠引入饱和碳酸钠盐水溶液中制备碳酸钠一水合物晶体的方法。当无水碳酸钠溶解时，盐水变得过饱和，从而通过形成碳酸钠一水合物晶体缓解过饱和。该方法包括控制过饱和度及其缓解以实现现有碳酸钠一水合物晶体的生长，而不是成核并形成新的碳酸钠一水合物晶体。将得到的晶体以不同的杂质以尺寸分离的形式分离。

5. 发明授权

US06173840B1 Beneficiation of saline minerals 失效
标题翻译：盐水矿物的利用
公开(公告)号：US06173840B1
公开(公告)日：2001-01-16
申请号：US09027043
申请日：1998-02-20
申请人： Rudolph Pruszko , Roland Schmidt , Dale Lee Denham, Jr.
发明人： Rudolph Pruszko , Roland Schmidt , Dale Lee Denham, Jr.
IPC分类号： B03C100
CPC分类号： C01D3/08 , B03C1/00 , B03C1/035 , C01D1/28 , C01D5/00 , C01D7/00 , C01D9/00
摘要： Processes for purification of saline minerals using magnetic separation are disclosed. In particular, saline minerals can include trona, borates, potash, sulfates, nitrates and chlorides. The magnetic separation can include high intensity magnetic separation which can be conducted at greater than about 20,000 Gauss and up to greater than about 50,000 Gauss. Other embodiments of the invention include calcination of a saline mineral in an inert atmosphere or in an oxygen-containing atmosphere at a high temperature prior to magnetic separation. A further embodiment of the invention includes pre-alignment of particles on a surface to align the particles of high magnetic force during a magnetic separation step. Also disclosed are various embodiments of magnetic separation which include subjecting an ore to a preliminary magnetic field prior to magnetic separation.
摘要翻译：公开了使用磁分离来净化盐水矿物的方法。特别地，盐水矿物可以包括天然碱，硼酸盐，钾盐，硫酸盐，硝酸盐和氯化物。磁分离可以包括高强度磁分离，其可以在大于约20,000高斯和大于约50,000高斯下进行。本发明的其它实施方案包括在磁性分离之前在高温下在惰性气氛或含氧气氛中煅烧盐矿物质。本发明的另一实施例包括在磁性分离步骤期间颗粒在表面上的预对准以对准高磁力颗粒。还公开了磁分离的各种实施例，其包括在磁分离之前使矿石经受预备磁场。

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