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    Recovery of cement kiln dust through precipitation of calcium sulfate using sulfuric acid solution
    21.
    发明申请
    Recovery of cement kiln dust through precipitation of calcium sulfate using sulfuric acid solution 失效
    使用硫酸溶液通过沉淀硫酸钙回收水泥窑灰尘

    公开(公告)号：US20030061972A1

    公开(公告)日：2003-04-03

    申请号：US10207316

    申请日：2002-09-26

    发明人： Jerry F. Key JR.

    IPC分类号： C04B011/00

    CPC分类号： C04B22/146 ,  C01F11/46 ,  C04B7/24 ,  C04B7/436 ,  C05D3/04 ,  C05D9/00 ,  Y02P40/121 ,  Y02P40/145 ,  C04B7/425 ,  C04B20/023

    摘要： A method and apparatus for recovering gypsum from spent cement kiln dust for reuse within a cement making process as a filler for use in the production of Portland cement. The invention advantageously provides for a method of producing a fertilizer as a byproduct of the gypsum production process. The invention also provides a method of producing Portland cement using the gypsum derived from the cement kiln dust.

    摘要翻译： 一种用于从废水泥窑灰中回收石膏的方法和装置，用于在用于生产波特兰水泥的填料中的水泥制备工艺中再利用。 本发明有利地提供了作为石膏生产方法的副产物的肥料的生产方法。 本发明还提供了一种使用来自水泥窑灰的石膏生产波特兰水泥的方法。

    Method of regulating the flue gas temperature and voltage supply in an electrostatic precipitator for a cement production plant
    22.
    发明授权
    Method of regulating the flue gas temperature and voltage supply in an electrostatic precipitator for a cement production plant 有权
    调节水泥生产厂静电除尘器烟气温度和电压供应的方法

    公开(公告)号：US06293787B1

    公开(公告)日：2001-09-25

    申请号：US09214012

    申请日：1999-08-20

    申请人： Victor Reyes

    发明人： Victor Reyes

    IPC分类号： F27B1500

    CPC分类号： C04B7/436 ,  B03C3/014 ,  F27B7/2033 ,  F27B7/42 ,  Y10S261/09

    摘要： A cement production plant and method of regulating the flue gas temperature in a cement production plant. The cement production plant includes a kiln, a flue gas conditioning device, a mill and an electrostatic precipitator. The flue gas from the kiln is passed through the conditioning device. From there, the flue gas is conveyed either via the mill or directly to the electrostatic precipitator. The measurements are carried out in the flow path of the gas of the flue gas temperature before the electrostatic precipitator, and the water is supplied to the flue gas for cooling purposes in the conditioning device as a response to this temperature measurement, provided the temperature is too elevated.

    摘要翻译： 一个水泥生产厂和调节水泥生产厂烟气温度的方法。 水泥生产设备包括窑炉，烟道气调节装置，磨机和静电除尘器。 来自窑的废气通过调节装置。 从那里，烟气通过磨机或直接输送到静电除尘器。 测量在静电除尘器之前的烟道气体的气体的流动路径中进行，并且作为对该温度测量的响应，在调节装置中将水供应到用于冷却目的的烟道气，条件是温度为 太高了

    Cement dust recovery system
    23.
    发明授权
    Cement dust recovery system 失效
    水泥粉尘回收系统

    公开(公告)号：US5782973A

    公开(公告)日：1998-07-21

    申请号：US841056

    申请日：1997-04-29

    申请人： Sidney M. Cohen ,  Michael E. Prokesch

    发明人： Sidney M. Cohen ,  Michael E. Prokesch

    IPC分类号： C04B7/43 ,  F27B1/00 ,  F27B15/00 ,  F27D17/00 ,  C04B7/45 ,  C04B7/60

    CPC分类号： C04B7/436 ,  F27B15/00 ,  F27D17/008 ,  F27B1/005

    摘要： A process of treating dust from a cement manufacturing operation. The process comprises adding carbon bearing material to the dust catch from a cement manufacturing operation to form a mixture, which is formed into nodules and sizing the nodules to obtain a feed material having a selected size range. The nodules are directed as feed material to a fluidized bed which is maintained by passing air for combustion upwardly through a bed of material. The material is thermal processed within the fluidized bed in a reducing atmosphere by supplying fuel for combustion in the fluidized bed to maintain temperatures sufficient to volatilize alkali and sulfur compounds in the feed material and produce a product having an increased concentration of cement forming compounds and reduced alkali and sulfur compounds as compared to the feed material. The reduced clinker is then re-oxidized to minimize/reverse adverse color and mineralogy.

    摘要翻译： 一种处理来自水泥制造操作的灰尘的过程。 该方法包括将碳载体材料从水泥制造操作中添加到除尘器中以形成混合物，其形成结节并对结节进行上浆以获得具有选定尺寸范围的进料。 结节作为进料输送到流化床，流化床通过通过空气向上通过材料床而保持。 该材料在还原气氛中在流化床内通过在流化床中供应燃料以保持足够的温度使得在进料中的碱和硫化合物挥发，并产生具有增加的水泥形成化合物浓度的产物并减少 碱和硫化合物与进料相比。 然后将还原的熟料再次氧化以最小化/逆转不利的颜色和矿物学。

    Process for treating cement plant dust catch
    24.
    发明授权
    Process for treating cement plant dust catch 失效
    水泥厂除尘处理工艺

    公开(公告)号：US4173487A

    公开(公告)日：1979-11-06

    申请号：US639539

    申请日：1975-12-10

    申请人： Sidney M. Cohen

    发明人： Sidney M. Cohen

    IPC分类号： C04B7/43 ,  C04B7/60 ,  C04B18/16 ,  C05D9/00 ,  C04B7/04

    CPC分类号： C04B18/162 ,  C04B7/436 ,  C04B7/60 ,  C05D9/00 ,  Y02W30/95

    摘要： A process for treating the dust catch from a cement manufacturing operation for producing cement clinker. The process includes blending the dust catch from a cement manufacturing operation with appropriate additives to produce a feed material. The blended feed material is pelletized and then supplied to a rotary kiln where it is burned at reducing conditions to produce cement clinker. The product discharged from the kiln is cooled and the exhaust gases from the kiln are quenched and the particulates collected. The process can be used to produce an alkali rich product from the exhaust system.

    摘要翻译： 一种用于生产水泥熟料的水泥制造操作中的除尘器的处理方法。 该方法包括将来自水泥制造操作的除尘器与适当的添加剂混合以产生进料。 混合的进料材料被造粒，然后供给到回转窑，在其中在还原条件下燃烧以产生水泥熟料。 从窑排出的产品被冷却，来自窑的废气被淬火并收集颗粒物。 该方法可用于从排气系统生产富碱产品。

    Integrated process for the production of clinker with treatment of bypass dusts produced by the kiln
    25.
    发明授权
    Integrated process for the production of clinker with treatment of bypass dusts produced by the kiln 有权

    公开(公告)号：US10011527B2

    公开(公告)日：2018-07-03

    申请号：US14374187

    申请日：2013-01-29

    申请人： Italcementi S.p.A.

    发明人： Roberto Fedi ,  Antonio Clausi ,  Giovanni Cinti

    IPC分类号： C04B7/60 ,  C05G3/00 ,  C04B7/43 ,  F27B7/20 ,  F27D17/00 ,  C04B7/36 ,  C05D1/02 ,  B01D53/77

    CPC分类号： C04B7/60 ,  B01D53/77 ,  B01D2253/34 ,  B01D2258/0233 ,  C04B7/364 ,  C04B7/436 ,  C05D1/02 ,  C05G3/00 ,  C05G3/0076 ,  F27B7/2016 ,  F27D17/008 ,  Y02P20/125

    摘要： It is described an integrated process for the production of clinker by dry process, with treatment in continuous of by-pass dusts produced by the kiln, wherein the solid matter to treat consists of bypass dusts of a clinker production process, containing compounds of chloride, sodium, potassium and sulphur, such a process comprising the following steps: a) extraction of the bypass dusts directly from the phase of quench, without intermediate storage, at a temperature comprised between 150 and 200° C., with a moisture content varying from 0.1 to 3% by weight, preferably from 0.1 to 0.5% by weight, and with a quantity of calcium carbonate lower than 55% by weight; b) mixing of said dusts coming from step a), within a maximum time comprised between 2 and 10 minutes, preferably lower than about 5 minutes, with water up to a water/dusts ratio varying from 2:1 to 4:1, preferably from 2.5:1 to 3.5:1, in a way to obtain a mixture with a moisture content comprised between 45 and 75% by weight, preferably between 50% and 55% by weight, even more preferably equal to about 50% by weight; c) mechanical stirring of the mixture diluted up to complete dissolution of the soluble salts; d) mechanical separation of the mixture so diluted in a liquid fraction containing water and soluble salts and in a solid fraction in form of cake or crust.

    Cement Kiln Dust Treatment System and Method
    28.
    发明申请
    Cement Kiln Dust Treatment System and Method 有权
    水泥窑除尘系统及方法

    公开(公告)号：US20160340243A1

    公开(公告)日：2016-11-24

    申请号：US15228673

    申请日：2016-08-04

    申请人： Mercutek LLC

    发明人： Peter D'Amico ,  Christopher Poling ,  Thomas Lesniak

    IPC分类号： C04B7/43 ,  B09B3/00 ,  C22B43/00

    CPC分类号： C04B7/436 ,  B01D53/64 ,  B01D2251/402 ,  B01D2251/404 ,  B01D2257/602 ,  B01D2258/0233 ,  B09B3/0025 ,  B09B3/0083 ,  C22B43/00 ,  Y10S588/90

    摘要： A system and method for treating cement kiln dust is provided. The method includes the steps of receiving cement kiln dust (CKD) from a kiln; heating the collected CKD; forming a gas stream of vaporized metal and CKD by sufficient heating to separate at least one heavy metal from the collected CKD stream to create a cleaned CKD stream and a metal stream; providing a water soluble alkaline-earth metal polysulfide; combining the heavy metal stream with the water soluble alkaline-earth metal sulfide to create a combined stream; and removing at least a portion of one heavy metal from the combined stream.

    摘要翻译： 提供了一种处理水泥窑灰的系统和方法。 该方法包括从窑炉接收水泥窑灰（CKD）的步骤; 加热收集的CKD; 通过充分加热形成汽化金属和CKD的气流，以从收集的CKD流中分离出至少一种重金属以产生清洁的CKD流和金属流; 提供水溶性碱土金属多硫化物; 将重金属流与水溶性碱土金属硫化物结合以产生组合流; 以及从组合流中除去至少一部分重金属。