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公开(公告)号：US20240018037A1
公开(公告)日：2024-01-18
申请号：US18043876
申请日：2021-09-01
摘要： The present disclosure relates to a process for the decarbonation of limestone, dolomite or other carbonated materials. The process may include heating particles of carbonated materials in a reactor of a first circuit to obtain decarbonated particles. Particles of carbonated materials are conveyed by a first entraining gas in the first circuit for preheating. The gas includes the carbon dioxide, the gas composition being substantially free of nitrogen. The carbonated particles are separated from a first entraining gas flow. The decarbonated particles are transferred to a cooling section of a second circuit having a second entraining gas in which the conveyed decarbonated particles release a portion of their thermal energy. The decarbonated particles are separated from a second entraining gas flow. The second entraining gas is substantially free of carbon dioxide.
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公开(公告)号：US09815738B2
公开(公告)日：2017-11-14
申请号：US13904296
申请日：2013-05-29
CPC分类号： C04B12/025 , C04B2/102 , C04B14/304 , C04B28/34 , C04B20/1018 , C04B20/023 , C04B20/107 , C04B14/047 , C04B22/0013 , C04B22/004 , C04B22/06 , C04B24/04 , C04B24/06 , C04B24/123 , C04B24/18 , C04B24/38 , C04B40/0075 , C04B40/0633
摘要： Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900° F. to about 1800° F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described.
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公开(公告)号：US20170081205A1
公开(公告)日：2017-03-23
申请号：US15126188
申请日：2015-04-10
发明人： Robin Phinney , Jonathon Phinney , Siu Ma
CPC分类号： C01F5/06 , C01F5/24 , C01F11/46 , C01P2002/72 , C01P2004/61 , C01P2006/80 , C04B2/102
摘要： The present invention provides a process for producing high purity hydromagnesite from a source of magnesium chloride. The process involves preparation of a magnesium chloride brine of a specific concentration and reacting with sodium carbonate, while maintaining the reaction at a specific temperature range to form a hydromagnesite precipitate. The product can be calcined to generate high purity magnesium oxide compounds.
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公开(公告)号：US20170081204A1
公开(公告)日：2017-03-23
申请号：US15126180
申请日：2015-04-10
发明人： Robin Phinney , Jonathon Phinney , Siu Ma
CPC分类号： C01F5/06 , C01B32/50 , C01F5/20 , C01F5/24 , C01F11/46 , C01P2002/72 , C01P2004/61 , C01P2006/60 , C01P2006/80 , C04B2/102 , C22B3/14 , C22B3/22
摘要： The present invention provides a process for producing high purity hydromagnesite from a source of magnesium chloride. The process involves preparation of a magnesium chloride brine of a specific concentration, which is ammoniated at a specific temperature range, followed by carbonation, while maintaining the reaction at a specific temperature range to form a hydromagnesite precipitate. The product can be calcined to generate high purity magnesium oxide compounds.
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5.发明申请公开(公告)号：US20140305346A1
公开(公告)日：2014-10-16
申请号：US13862623
申请日：2013-04-15
申请人： Indra Neelameggham
CPC分类号： C01F11/08 , C01B17/745 , C01D5/10 , C01F5/12 , C04B2/00 , C04B2/10 , C04B2/102 , C04B2/104 , C05D9/02 , C22B26/20 , C22B26/22 , C25C1/02 , C25C3/04 , Y02P20/133 , Y02P40/42
摘要： The present invention teaches the method to use the sulfate or sulfites based raw materials, such as magnesium, calcium and other alkative earth sulfates or sulfites to produce the respective oxides in a carbon five basis, by using sulfur as the fuel and the reductant. The invention also utilizes renewable energy such as solar thermal or green electricity wherever possible. This approach provides a green process, of ultra-low carbon dioxide emission, for the production of magnesium, other alkaline earth metals and other material which requires alkaline earth oxide, such as in the production of carbon free Portland cement requiring lime. The invention also provides a useful outlet for waste streams leading to sustainable processes. The cost of the production of these precursors are kept low by concurrently producing a saleable by-product—sulfuric-acid.
摘要翻译： 本发明教导了使用硫酸盐或亚硫酸盐基原料如镁，钙和其它碱土金属硫酸盐或亚硫酸盐的方法，通过使用硫作为燃料和还原剂来生产碳五种各自的氧化物。 本发明尽可能地利用可再生能源，例如太阳能热能或绿色电力。 这种方法提供了一种超低二氧化碳排放的绿色过程，用于生产需要碱土金属氧化物的镁，其他碱土金属和其它材料，例如生产需要石灰的无碳硅酸盐水泥。 本发明还为导致可持续过程的废物流提供了有用的出口。 通过同时生产可销售的副产物 - 硫酸，这些前体的生产成本保持较低。
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公开(公告)号：US20110011142A1
公开(公告)日：2011-01-20
申请号：US12091035
申请日：2006-10-23
CPC分类号： B01D53/62 , B01D2251/404 , B01D2253/10 , B01D2257/504 , B01J20/04 , B01J20/041 , B01J20/28004 , B01J20/34 , B01J20/3433 , B01J20/3483 , C01F11/18 , C04B2/12 , Y02C10/04 , Y02C10/08 , Y02P20/152 , Y02P40/42 , C04B2/102
摘要： A material compound comprising MgO. CaCO3 comprising granules of a size distribution between as a solid solution of MgO and CaCO3. and a method of fabricating the same.
摘要翻译： 包含MgO的材料化合物。 CaCO 3包含尺寸分布为MgO和CaCO 3的固溶体的颗粒。 及其制造方法。
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公开(公告)号：US4838941A
公开(公告)日：1989-06-13
申请号：US599
申请日：1987-01-06
申请人： Robert G. D. Hill
发明人： Robert G. D. Hill
IPC分类号： C04B9/02 , C01B7/03 , C01B9/02 , C01F5/00 , C01F5/30 , C01F11/00 , C04B2/10 , C04B9/00 , C04B9/04 , C04B9/06 , C04B9/20 , C04B28/32
CPC分类号： C01F5/00 , C01B7/035 , C01B9/02 , C01F11/00 , C01F5/30 , C04B2/102 , C04B28/32 , C04B9/00 , C04B9/20
摘要： A reaction product of at least one of magnesium carbonate and magnesium silicate, with a metal chloride at a temperature exceeding 300.degree. C. Such a product, when mixed with water, sets to be an immensely strong magnesium cement. It may have aggregates of various types mixed with it.
摘要翻译： 碳酸镁和硅酸镁中的至少一种与金属氯化物在超过300℃的温度下的反应产物。当与水混合时，这种产物被设定为非常强的镁水泥。 它可能具有与其混合的各种类型的聚合。
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公开(公告)号：US4797159A
公开(公告)日：1989-01-10
申请号：US890672
申请日：1986-07-25
申请人： Lloyd B. Spangle
发明人： Lloyd B. Spangle
CPC分类号： C04B2/102 , C04B22/066 , C09K8/42 , C09K8/46 , C04B2111/34
摘要： Particulate magnesium oxide prepared by calcining magnesium oxide at between about 1100.degree. C. and about 1500.degree. C. At least about 80% of the magnesium oxide particles are between about 150 microns to about 400 microns in diameter. This magnesium oxide is capable of producing expansion in set cements when the temperature thereof is at least about 60.degree. C. Preferably the magnesium oxide has been calcined at between about 1100.degree. C. to about 1300.degree. C. for about 1 to about 3 hours, and at least about 80% of the particles are between about 200 microns to about 325 microns. Further, the BET surface area of the particles is preferably between about 0.8 to about 1.8 m.sup.2 /g, and the acid neutralization time (using the method described) is between about 15 to 20 minutes, and further preferably between about 17 to about 25 minutes. Expandable cement compositions using such magnesium oxide, and a method of using them in cementing of wells, are also disclosed.
摘要翻译： 通过在约1100℃至约1500℃下煅烧氧化镁制备的颗粒状氧化镁。至少约80％的氧化镁颗粒直径在约150微米至约400微米之间。 当氧化镁的温度至少为约60℃时，该氧化镁能够在凝固水泥中产生膨胀。优选氧化镁在约1100℃至约1300℃下煅烧约1至约3小时 ，并且至少约80％的颗粒在约200微米至约325微米之间。 此外，颗粒的BET表面积优选在约0.8至约1.8m 2 / g之间，酸中和时间（使用所述方法）为约15至20分钟，进一步优选为约17至约25分钟 。 还公开了使用这种氧化镁的可膨胀水泥组合物及其在水泥固井中的使用方法。
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公开(公告)号：US3397070A
公开(公告)日：1968-08-13
申请号：US54214266
申请日：1966-04-12
申请人： BAKER CO J E
发明人： PAUL ROBERT A , FORCHHEIMER OTTO L
IPC分类号： C04B2/10
CPC分类号： C04B2/102
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