子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | 半湿法生产水泥熟料的方法和设备 | CN88100725 | 1988-02-16 | CN88100725A | 1988-10-05 | 格奥尔格·翁兰; 保罗·惠特瓦 |
| 本发明论述了由半湿法生产水泥熟料的方法和设备，此方法使用了供给附加燃料的两级预热器和一个短的转炉，冷却器的废空气直接送至干燥区。因此即使滤饼的水分含量有变化时，本方法仍能使转炉在恒定的脱酸程度下操作，并能够保证转炉操作稳定。 | ||||||
| 82 | METHOD AND SYSTEM FOR CONVERTING WASTE HEAT FROM CEMENT PLANT INTO A USABLE FORM OF ENERGY | PCT/US2009065286 | 2009-11-20 | WO2010059918A2 | 2010-05-27 | KALINA ALEXANDER I |
| Methods and systems for converting waste heat from cement plant into a usable form of energy are disclosed. The methods and systems make use of two heat source streams from the cement plant, a hot air stream and a flue gas stream, to fully vaporize and superheat a working fluid stream, which is then used to convert a portion of its heat to a usable form of energy. The methods and systems utilize sequential heat exchanges stages to heat the working fluid stream, first with the hot air stream or from a first heat transfer fluid stream heated by the hot air stream and second with the flue gas stream from a second heat transfer fluid stream heated by the hot air stream. | ||||||
| 83 | Method for denitrification of bypass exhaust gases in a plant for producing cement clinker | US15027626 | 2014-10-06 | US09914664B2 | 2018-03-13 | Heiko Schuermann |
| Denitrifying bypass exhaust gases in a cement clinker producing plant. The plant comprises a rotary kiln connected to a calciner for the deacidification of raw material or to a rotary kiln riser shaft via a rotary kiln inlet chamber, and the bypass exhaust gas being drawn off in the region of the rotary kiln inlet chamber. The method comprises: cooling the bypass gas to between 260 C and 400 C in a cooling device, injecting an ammonia-, urea-, and/or ammonium-containing substance into the cooled bypass gas, introducing the cooled and mixed bypass gas into a ceramic filter system to filter out any halide and sulfate of the alkali metals and alkaline-earth metals precipitated during cooling the gas, and any nitrogen not reacted by the injected substances is chemically selectively reduced over a catalytic converter which is located in or directly downstream of the ceramic filter system. | ||||||
| 84 | STEAM-ASSISTED PRODUCTION OF METAL SILICATE CEMENTS, COMPOSITIONS AND METHODS THEREOF | US15335520 | 2016-10-27 | US20170121223A1 | 2017-05-04 | Vahit Atakan |
| The invention provides a novel, steam-assisted production methodology and associated compositions and methods of use in the manufacture of carbonatable or non-carbonatable metal silicate or metal silicate hydrate (e.g., calcium silicate or calcium silicate hydrate) compositions. These metal silicate compositions and related phases are suitable for use hydraulic, partially hydraulic or non-hydraulic cement that sets and hardens by a hydration process, a carbonation process or a combination thereof, and may be applied in a variety of concrete components in the infrastructure, construction, pavement and landscaping industries. | ||||||
| 85 | Cement production apparatus | US14382939 | 2013-03-13 | US09616401B2 | 2017-04-11 | Daisuke Sakaniwa; Yoshinori Takayama; Junzhu Wang; Hirokazu Shima |
| A cement production apparatus having: a duct 21 in which exhaust gas drained from a lower cyclone flows upward, distributes and introduces the exhaust gas to upper cyclones; material-supplying pipes 22 for supplying cement raw material connected to both side parts of one side surface of the duct 21 below a distribution part 23 among the upper cyclones; and a supply-amount controller 26 provided on an upstream position above the material-supplying pipes 22 for controlling supply-amounts of the cement raw material to the material-supplying pipes 22: and when H is a vertical distance between a horizontal surface P1 passing through centers of distribution outlets 21a of the upper cyclones and a horizontal surface P2 passing through centers of connecting ports 22a of the material-supplying pipes 22, and D is a diameter of the duct 21, a ratio H/D is set to 1.4 to 2.5. | ||||||
| 86 | METHOD FOR DENITRIFICATION OF BYPASS EXHAUST GASES IN A PLANT FOR PRODUCING CEMENT CLINKER | US15027626 | 2014-10-06 | US20160347657A1 | 2016-12-01 | Heiko Schuermann |
| Denitrifying bypass exhaust gases in a cement clinker producing plant. The plant comprises a rotary kiln connected to a calciner for the deacidification of raw material or to a rotary kiln riser shaft via a rotary kiln inlet chamber, and the bypass exhaust gas being drawn off in the region of the rotary kiln inlet chamber. The method comprises: cooling the bypass gas to between 260 C and 400 C in a cooling device, injecting an ammonia-, urea-, and/or ammonium-containing substance into the cooled bypass gas, introducing the cooled and mixed bypass gas into a ceramic filter system to filter out any halide and sulfate of the alkali metals and alkaline-earth metals precipitated during cooling the gas, and any nitrogen not reacted by the injected substances is chemically selectively reduced over a catalytic converter which is located in or directly downstream of the ceramic filter system. | ||||||
| 87 | Method for removal of radioactive cesium and facility therefor | US14357519 | 2012-10-30 | US09399598B2 | 2016-07-26 | Tetsuo Ogiri; Souichirou Okamura; Kenichi Honma |
| To provide a method and an apparatus for removing radioactive cesium from waste containing radioactive cesium at low cost. A radioactive cesium removal apparatus 1 including: an incinerator 22 for burning an inflammable waste polluted with radioactive cesium; a suspension preheater 23 for, with the combustion exhaust gas G5 and a sensible heat of the incineration ash of a combustible C discharged from the incinerator, generating calcium oxide or/and magnesium oxide from a source of calcium oxide or/and a source of magnesium oxide, cyclones of the suspension preheater being arranged in multistages; a rotary kiln 21 for burning an inorganic substance S polluted with radioactive cesium together with the calcium oxide or/and the magnesium oxide and the incineration ash D3 including the radioactive cesium; and collectors 31, 32 for collecting cesium volatilized in the rotary kiln. | ||||||
| 88 | Plant for producing cement with central grinding unit | US13977403 | 2012-01-04 | US09388073B2 | 2016-07-12 | Siegfried Strasser |
| A plant for producing cement, having a first stage for crushing raw material to form raw powder, a second stage for calcination and sintering of the raw powder to form cement clinker, a third stage for cooling the sintered cement clinker, and a fourth stage for crushing the sintered cement clinker to form cement. The first stage for crushing raw material to form raw powder and the fourth stage for crushing the sintered cement clinker to form cement are structurally combined. In this way, during servicing or repair of one crushing stage, the plant need not be shut down because, y variable circuitry switching, the crushing stages permit plant operation with reduced production output. | ||||||
| 89 | Process for producing a belite cement having a high reactivity and a low calcium/silicate ratio | US14409504 | 2013-06-10 | US09321682B2 | 2016-04-26 | Mohsen Ben Haha; Tim Link; Frank Bellmann; Horst-Michael Ludwig |
| The present invention relates to building materials, in particular a method for the production of a binder for concrete, mortar or plaster, and a binder produced according to this method as well the use thereof. | ||||||
| 90 | BELITE-CALCIUM ALUMINATE AS AN ADDITIVE | US14787006 | 2014-05-07 | US20160107933A1 | 2016-04-21 | Dirk SCHMITT; Mohsen BEN HAHA; Anca ITUL; Nicolas SPENCER |
| The present invention relates to the use of a belite calcium aluminate obtainable in a method comprising the following steps: a) providing a starting material that has a molar Ca/(Si+Al+Fe) ratio from 1.0 to 3.5 and a molar Al/Si ratio from 100 to 0.1, b) mixing the raw materials, c) hydrothermal treating of the starting material mixture produced in step b) in an autoclave at a temperature from 100 to 300° C. and a residence time from 0.1 to 24 h, wherein the water/solids ratio is 0.1 to 100, d) tempering the intermediate product obtained in step c) at 350 to 600° C., wherein the heating rate is 10-6000° C./min and the residence time is 0.01-600 min as an accelerator for Portland cement. | ||||||
| 91 | Method and plant for the production of cement clinker | US13516310 | 2010-10-07 | US09067828B2 | 2015-06-30 | Detlev Kupper |
| The method according to the invention for producing cement clinker comprises substantially the following method steps: raw cement material is preheated in a preheater, the preheated material is heated further in a calcining zone while admitting combustion air, and the material heated in this manner is fired in a kiln to form cement clinker, wherein a part of the waste gases developing in the kiln is used to preheat the raw cement material in the preheater, and another part is diverted, and is used in a heat exchanger to preheat the combustion air used in the calcining zone. | ||||||
| 92 | Process for controlling a crystal form of alite in portland cement clinker | US13509793 | 2010-07-15 | US08529690B1 | 2013-09-10 | Xiaodong Shen; Suhua Ma; Xuerun Li; Lin Chen; Weiqiang Zhou; Song Deng |
| The present invention relates to a process of controlling crystal form of Alite in Portland cement clinker, wherein the said Portland cement clinker is thermally treated in order to change the crystal form of Alite in Portland cement clinker, so as to improve performance of resulting Portland cement clinker. The said process of present invention is easy and feasible. | ||||||
| 93 | Method and facility for disposing wet sludge | US11990983 | 2005-08-26 | US08141501B2 | 2012-03-27 | Koji Nagamizu; Akihisa Koga; Hiroyuki Terunuma; Yusuke Nakai; Koyuru Horiike; Masafumi Ito |
| A wet sludge disposal facility is capable of smoothly transferring wet sludge to a kiln inlet part of a dry process kiln by a low feeding pressure and without substantially increasing the moisture content in the wet sludge. The disposal facility is used in a cement clinker manufacturing facility having a preheater for preheating a cement raw material, and a dry process kiln connected to the preheater at the kiln inlet part of the dry process kiln. Wet sludge is transferred to the side of the kiln inlet part by feeding water between the wet sludge and the inner wall surface of the pipe by a water injection apparatus in at least one place between the pressure feed pump and the kiln inlet part. | ||||||
| 94 | Method and apparatus for controlling pollution from a cement plant | US11026481 | 2004-12-30 | US07279039B2 | 2007-10-09 | James J. Schwab; Ronald L. Hawks |
| A method and apparatus for reducing air pollutants associated with dry process, precalciner cement manufacturing is shown. Raw feed meal used in cement production is heated in a special heating chamber to drive off volatile compounds, such as organic materials and salts of ammonia. Preferably, the feed meal is heated to a temperature of at least 350° F. The gases that are driven off flow to the precalciner where they are combusted and rendered harmless. Heat is provided by diverting at least a portion of the exhaust gases from the cement pyroprocessing kiln to the special heater. The raw feed meal is indirectly heated using a heat exchange wall between the feed meal and the kiln exhaust gas flow. In addition, abase-containing material such as lime or precalcined feed meal, may be added to the raw feed before treatment meal to promote the breakdown of inorganic ammonium compounds, thereby releasing gaseous ammonia which is also destroyed upon subsequent combustion. Hot precalcined meal may also be used to provide some of the heat required to heat the raw feed meal in the special heating chamber. | ||||||
| 95 | Method for producing white cement clinker | US8080 | 1987-01-27 | US4717337A | 1988-01-05 | Toshikazu Ichiyanagi; Kanzaburo Sudo; Zenzaburo Kawai; Shoji Sekine; Hiroshi Teshigawara |
| According to the present invention, white cement clinker particles are not burned in a rotary kiln and the burned clinker particles are not immersed in the water to be cooled. White cement clinker raw materials are burned in a fluidized bed burning furnace with a fluid bed or a spouted bed and the clinker particles thus burned are reduced with a reducing gas. The clinker particles thus reduced are first cooled with the water which is sprayed over the clinker particles and then further cooled with the air. The white cement clinker raw material particles fed into the fluidized bed burning furnace are burned into clinker particles while forming a fluidized bed and then the clinker particles thus burned drop through a jet injection pipe into a reduction chamber disposed below the burning furnace and are reduced. The clinker particles thus reduced are rapidly cooled to 600.degree.-700.degree. C. with the sprayed water while being isolated from the surrounding atmosphere in a primary cooling chamber and the clinker particles thus cooled are further cooled in a secondary cooling chamber with the air to 100.degree.-150.degree. C. | ||||||
| 96 | Method and apparatus for producing white cement clinker | US743498 | 1985-06-11 | US4573908A | 1986-03-04 | Toshikazu Ichiyanagi; Kanzaburo Sudo; Zenzaburo Kawai; Shoji Sekine; Hiroshi Teshigawara |
| According to the present invention, white cement clinker particles are not burned in a rotary kiln and the burned clinker particles are not immersed in the water to be cooled. White cement clinker raw materials are burned in a fluidized bed burning furnace with a fluid bed or a spouted bed and the clinker particles thus burned are reduced with a reducing gas. The clinker particles thus reduced are first cooled with the water which is sprayed over the clinker particles and then further cooled with the air. The white cement clinker raw material particles fed into the fluidized bed burning furnace are burned into clinker particles while forming a fluidized bed and then the clinker particles thus burned drop through a jet injection pipe into a reduction chamber disposed below the burning furnace and are reduced. The clinker particles thus reduced are rapidly cooled to 600.degree.-700.degree. C. with the sprayed water while being isolated from the surrounding atmosphere in a primary cooling chamber and the clinker particles thus cooled are further cooled in a secondary cooling chamber with the air to 100.degree.-150.degree. C. | ||||||
| 97 | Method of recovering exhaust gas from boiler in electrical power generating device using combustible material as fuel and apparatus for performing such method | US471339 | 1983-03-02 | US4474010A | 1984-10-02 | Kyoichi Shibuya; Tomomi Ihara |
| A method of and apparatus for recovering exhaust gas from a boiler 2 of a thermal electric power generating device 1 are disclosed. The exhaust gas from the boiler 2 is fed through a conduit 30 to a preheat section 21 of a powder raw material treating device 20. The heat of the exhaust gas is recovered as a heat source for preheating the powder raw material. The ash contained in the exhaust gas is recovered as part of the powder raw material at the preheat section. The sulfur oxides in the exhaust gas react with the desulfurizing component of the powder raw material at the preheat section, and its reaction product is recovered as part of the powder raw material. | ||||||
| 98 | Method for reducing the concentration of sulfur compounds in a system for calcining fine grained materials | US484980 | 1983-04-04 | US4469664A | 1984-09-04 | Andris Abelitis; Jakob Hinterkeuser |
| A method and apparatus for reducing the sulfur content and/or the SO.sub.2 emission in a system for calcining fine grained materials such as in the manufacture of cement utilizing a pre-calcining and a final calcining stage. The sulfur content of a process gas or of a material stream is determined and then is mixed with appropriate amounts of a dust or a raw meal in a reaction zone, the dust or raw meal containing sulfur bonding substances such as alkaline earth carbonates. The exhaust gas from which the sulfur compounds are removed by the sulfur bonding is separated from the sulfur containing solids and the exhaust gas and solids are removed from the calcining system. | ||||||
| 99 | Production of cement clinker | US537179 | 1983-09-29 | US4465460A | 1984-08-14 | Paul Cosar |
| To permit the utilization of high-sulfur content solid fuels in the production of cement clinker in rotary kilns, the solid fuel is gasified and the gasified fuel is contacted with a fraction of the raw material used for the production of the cement clinker to desulfurize the gasified fuel, the desulfurized gasified fuel being delivered to a calcination stage and/or the rotary kiln for furnishing calories thereto. | ||||||
| 100 | System for burning fine-grained material, particularly for the manufacture of cement clinkers | US290177 | 1981-08-05 | US4425092A | 1984-01-10 | Kunibert Brachthauser; Horst Herchenbach |
| The invention relates to a method for burning fine-grain material, particularly for the manufacture of cement clinker from cement raw meal. The material is thermally treated in a multi-stage burning process with a pre-heating stage, a calcining stage with a high-degree of calcination, a sintering stage in a very short rotary kiln and a cooling stage. Fuel is introduced both into the sintering stage in the short rotary kiln as well as into the calcinating stage. Hot exhaust air from the cooling stage is supplied both to the sintering stage as well as to the calcining stage as furnace air. The invention also relates to an apparatus for the manufacture of mineral products of the burning process such as cement clinker. | ||||||
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