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1. 发明公开

US20230144517A1 A METHOD FOR REDUCING COMBUSTION TEMPERATURE AND THERMAL RADIATION WITHIN A LIME KILN 审中-公开
公开(公告)号：US20230144517A1
公开(公告)日：2023-05-11
申请号：US17916468
申请日：2021-04-05
申请人： ANDRITZ OY
发明人： Jari PÄYKKÖNEN , Nina VENÄLÄINEN
IPC分类号： F23N5/26 , F23L7/00 , F23N5/00 , C04B2/02 , C04B2/10 , C04B7/44
CPC分类号： F23N5/265 , F23L7/00 , F23N5/003 , C04B2/02 , C04B2/104 , C04B7/4438 , F23N2900/05003
摘要： A method for reducing combustion temperature and/or thermal radiation within a lime kiln of a pulp production plant, which kiln is a rotary kiln having a kiln tube (1) internally covered with refractory tiles (13) and having a burner (2) supplied by fuel for heating of the rotary kiln by a flame (3). The effects are achieved by supplying calcium carbonate containing particles to the flame (3) and/or to surrounding area around the flame (3). The particles are supplied into the rotary kiln by at least one lance (9) to the upper part of the flame (3). Calcium oxide containing particles may be supplied to the rotary kiln to areas surrounding the flame (3) for reducing the thermal radiation to an area over the flame (3) and/or to the area at the side of the flame (3), where the refractory tiles (13) of the kiln are rotating downwards.

2. 发明申请

US20210188711A1 METHODS AND SYSTEMS FOR PROVIDING IMPROVED CEMENT INCORPORATING METAL OXIDES AND HYDROXIDES 有权
公开(公告)号：US20210188711A1
公开(公告)日：2021-06-24
申请号：US17132785
申请日：2020-12-23
申请人： Shiho Kawashima , Daniel V. Esposito , Siwei Ma , Abdullah Huzeyfe Akca
发明人： Shiho Kawashima , Daniel V. Esposito , Siwei Ma , Abdullah Huzeyfe Akca
IPC分类号： C04B28/10 , C04B2/10 , C04B2/02 , C04B7/40 , C25B1/34 , C25B15/08 , C25B9/17 , C25B1/50
摘要： Cement and concrete compositions are produced via metal hydroxides and metal oxides isolated from aqueous sources such as seawater or wastewater. Aqueous solutions are electrolyzed to produce an alkaline component stream having an elevated pH, which when mixed with mineralized seawater causes metal ions dissolved therein to precipitate out in the form of metal hydroxides such as Mg(OH)2 and Ca(OH)2. These metal hydroxide products are then utilized as feedstocks for production of cement and concrete structural elements, or are converted to metal oxides suitable for the same purpose. The hydroxide products are then subjected to pressure and prolonged exposure to carbon dioxide to accelerate carbonation of the hydrated product. The resulting carbonates exhibit sufficient compressive strength for use in making structural components for construction, while reducing or eliminating the carbon footprint associated with traditional methods of cement and concrete manufacturing. Excess demineralized alkaline component can be recycled for additional electrolysis, or returned to a neutral pH for use in water desalination processes or even returned to the environment.

3. 发明授权

US10960379B2 Hydrated lime product 有权
公开(公告)号：US10960379B2
公开(公告)日：2021-03-30
申请号：US16728862
申请日：2019-12-27
申请人： Mississippi Lime Company
发明人： Randy J. Griffard , Gerald K. Bequette , William S. Allebach, Sr. , Paul J. Ramer
IPC分类号： B01J20/04 , C04B2/02 , B01J20/28
摘要： A hydrated lime product exhibiting superior reactivity towards HCl and SO2 in air pollution control applications. Also disclosed is a method of providing highly reactive hydrated lime and the resultant lime hydrate where an initial lime feed comprising calcium and impurities is first ground to a particle-size distribution with relatively course particles. Smaller particles are then removed from this ground lime and the smaller particles are hydrated and flash dried to form a hydrated lime, which is then milled to a significantly smaller particle size than that of the relatively course particles. The resultant lime hydrate product has available CaOH of greater than 92%, a citric acid reactivity of less than 20 seconds, a BET surface area greater than 18, a D90 less than 10 μm, a D50 less than 4 μm, a D90/D50 less than 3, and a large pore volume of greater than 0.2 BJH.

4. 发明申请

US20190256946A1 Composition in the Form of Briquettes Comprising Burnt Calcium-Magnesium Compounds, Method for Obtaining Same, and Use Thereof 审中-公开
公开(公告)号：US20190256946A1
公开(公告)日：2019-08-22
申请号：US16309373
申请日：2017-07-07
申请人： S. A. Lhoist Recherche et Developpement
发明人： Guillaume Criniere , Michael Nispel
IPC分类号： C22B1/243 , C22B1/245 , C04B2/02 , C04B18/02
摘要： Composition based on quick calcium-magnesium compounds in the form of briquettes, characterised in that said composition comprises quicklime in the form of milled particles at a concentration of at least 10% by weight and at most 100% by weight relative to the weight of said composition, said composition in the form of briquettes having a Shatter test index of less than 10% and the method for preparation and use thereof.

5. 发明授权

US10308551B2 Rubber composite and process for obtaining same 有权
公开(公告)号：US10308551B2
公开(公告)日：2019-06-04
申请号：US15489893
申请日：2017-04-18
申请人： Jorge B. Sousa
发明人： Jorge B. Sousa
IPC分类号： C04B26/00 , C08L7/00 , C04B2/02 , C04B12/00 , C04B26/04 , C08L95/00 , C04B111/00
摘要： This disclosure provides a rubber composite for use in a variety of applications, and methods for its preparation.

6. 发明授权

US10131575B2 Use of quarry fines and/or limestone powder to reduce clinker content of cementitious compositions 有权
公开(公告)号：US10131575B2
公开(公告)日：2018-11-20
申请号：US15866455
申请日：2018-01-09
申请人： ROMAN CEMENT, LLC
发明人： John M. Guynn
IPC分类号： C04B7/02 , C04B2/02 , C04B14/28 , C04B18/14 , C04B18/08 , C04B18/12 , C04B18/02 , C04B103/10
摘要： Quarry fines and/or limestone powder are used to reduce clinker content in concrete, mortar and other cementitious compositions, typically in combination with one or more pozzolanically active SCMs. Quarry fines and/or limestone powder can replace and/or augment a portion of hydraulic cement binder and/or fine aggregate. Quarry fines and/or limestone powder can advantageously replace a portion of cement binder and fine aggregate, acting as an intermediate that fills a particle size void between the largest cement particles and smallest fine aggregate particles. Supplemental lime can advantageously maintain or enhance balance of calcium ions in the mix water and/or pore solution. Supplemental sulfate can advantageously address sulfate deficiencies caused by high clinker reduction, use of water reducers and/or superplasticers, and SCMs containing aluminates. Such systematic approach to beneficially using quarry fines, limestone powder, SCMs, lime, and sulfate addresses many issues and permits high clinker reduction with similar or increased strength.

7. 发明授权

US09908812B2 Lime slaker system, modular water panel for lime slaker system, and method of using the same 有权
公开(公告)号：US09908812B2
公开(公告)日：2018-03-06
申请号：US15019374
申请日：2016-02-09
申请人： Integrity Municipal Systems, LLC
发明人： Roop C. Jain , Robert R. Arseneau , Kyle A. Lindberg
IPC分类号： C04B2/00 , C04B2/02 , C04B2/04 , C04B2/08
CPC分类号： C04B2/04 , C04B2/08
摘要： A lime slaker system for converting quicklime to a lime slurry includes: a lime feeder; a base slaker that includes a slaking chamber and a dilution chamber; a grit remover; and a modular water panel with a piping assembly in fluid communication with at least the base slaker and grit remover. The modular water panel is configured to independently control water distributed to the slaking compartment, the dilution chamber, and the grit remover.

8. 发明授权

US09650293B2 Process and apparatus for slaking lime and dissolving scale 有权
公开(公告)号：US09650293B2
公开(公告)日：2017-05-16
申请号：US14673099
申请日：2015-03-30
申请人： RDP Technologies, Inc.
发明人： Richard W. Christy , Michael Quici , Louis Litz
IPC分类号： C04B2/00 , C04B2/02 , C04B2/04 , C04B2/06 , C04B2/08 , C02F1/00 , C02F1/66 , C02F1/68
CPC分类号： C02F1/529 , C02F1/008 , C02F1/66 , C02F1/687 , C02F2209/005 , C02F2209/02 , C02F2303/04 , C02F2303/22 , C04B2/04 , C04B2/066 , C04B2/08
摘要： Process and apparatus is disclosed for providing a chemical reaction between calcium oxide containing grit particles to produce calcium hydroxide and heat, capturing the heat of hydration and using it to preheat water initially at ambient temperature, to rise to an elevated temperature to increase the amount of lime present in the water to a supersaturated lime suspension level, with the chemical reaction running to completion, followed by cooling. Heat from a water jacket may be used to raise the temperature in the lime slaker.

9. 发明授权

US09452951B2 System for calcining active lime with a precalcining furnace and method using the same 有权
标题翻译：用预煅烧炉煅烧活性石灰的系统及使用其的方法
公开(公告)号：US09452951B2
公开(公告)日：2016-09-27
申请号：US13780348
申请日：2013-02-28
申请人： CITIC Heavy Industries Co., Ltd. , Luoyang Mining Machinery Engineering Design And Research Institute Co., Ltd.
发明人： Jisheng Wang , Kaibo Zhang , Bin Qiao , Wen Zhu , Lin Jiang
IPC分类号： F27B15/02 , C04B2/02 , F27B7/20 , C04B2/10 , F27D9/00
CPC分类号： C04B2/02 , C04B2/10 , F27B7/2016 , F27D9/00 , F27D2009/0002
摘要： The invention provides a system for calcining active lime, including a precalcining furnace for receiving limestone materials to be calcined and precalcining the limestone materials, and a rotary kiln for receiving the materials containing precalcined product from the precalcining furnace, outputting the formed active lime, and at the same time supplying a first flue gas to the precalcining furnace. The calcining system further includes a precalcining furnace combustion device, which generates a second flue gas and supplies it to the precalcining furnace, such that the limestone materials are precalcined in the precalcining furnace under the action of the first flue gas and the second flue gas. In this way, the precalcining rate of the limestone materials in the precalcining furnace is significantly improved. Since the heat exchange in the precalcining furnace is mainly in the form of convective heat exchange having a high heat efficiency, the heat exchange efficiency of the whole system is improved, and thus the heat consumption of the system is reduced.
摘要翻译：本发明提供一种用于煅烧活性石灰的系统，包括用于接收待煅烧和预煅烧石灰石材料的石灰石材料的预煅烧炉，以及用于从预分解炉接收含有预煅烧产物的材料的回转窑，输出形成的活性石灰，以及同时将第一烟道气供应到预煅烧炉。煅烧系统还包括预煅烧炉燃烧装置，其产生第二烟气并将其供应到预煅烧炉，使得石灰石材料在第一烟道气和第二烟道气的作用下在预煅烧炉中预煅烧。以这种方式，预煅烧炉中石灰石材料的预煅烧率显着提高。由于预分解炉中的热交换主要是具有高热效率的对流热交换的形式，所以整个系统的热交换效率提高，因此系统的热消耗降低。

10. 发明授权

US09266774B2 Method for burning pelletized good 有权
标题翻译：烧成丸的方法
公开(公告)号：US09266774B2
公开(公告)日：2016-02-23
申请号：US14124512
申请日：2012-05-09
申请人： Hannes Piringer , Patrick Bucher
发明人： Hannes Piringer , Patrick Bucher
IPC分类号： F23G7/00 , C04B2/12 , C04B35/626 , C04B2/02 , F27B1/02 , F27B1/10
CPC分类号： C04B2/12 , C04B2/02 , C04B35/62675 , C04B2235/3208 , C04B2235/442 , F27B1/02 , F27B1/10 , Y02P40/42
摘要： According to the invention, the method for burning fragmented material is carried out in at least one shaft which comprises a preheating zone, a combustion zone and a cooling zone, coal having a swelling index > 1 being supplied via combustion lances, and the temperature of the coal in the combustion lances being maintained below a temperature value at which melting phases of the coal used are formed.
摘要翻译：根据本发明，用于燃烧碎片材料的方法在包括预热区，燃烧区和冷却区的至少一个轴中进行，具有通过燃烧喷枪供给的溶胀指数> 1的煤，以及燃烧喷枪中的煤被保持在形成所用煤的熔融相的温度值以下。

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