公开(公告)号：US09982947B2

公开(公告)日：2018-05-29

申请号：US14958839

申请日：2015-12-03

Applicant: SICHUAN KO CHANG TECHNOLOGY CO., LTD

Inventor： Yonghe Hou ,  Shifa Wei ,  Pengsheng Wang ,  Jiabin Wang

IPC: F27D25/00 ,  F27B7/04 ,  F27B7/20 ,  C01B25/18 ,  F27B7/28 ,  F27B7/32

CPC classification number: F27D25/00 ,  C01B25/185 ,  F27B7/28 ,  F27B7/32

Abstract: A rotary kiln for reducing phosphate ore in kiln phosphoric acid process, comprising a kiln body, a kiln head box, a kiln tail box and a driving device for driving the rotation of the kiln body, wherein a fuel burner is provided at the kiln head, a feed pipe and an outlet flue connected to an external hydration tower are provided at the kiln tail box, the upper part of the kiln body is provided with no air pipe, the outlet flue is provided in the radius range of the kiln body with the axis of the rotary kiln as a center, and the fume conveying direction in the outlet flue is substantially parallel to the axis direction of the rotary kiln or has an included angle of less than 45° thereto. The rotary kiln can effectively mitigate the phenomenon of ring forming in the kiln tail of the rotary kiln.

公开(公告)号：US08267685B2

公开(公告)日：2012-09-18

申请号：US12360057

申请日：2009-01-26

Applicant: Eric R. Hansen ,  Ralph A. Supelak ,  James R. Tutt ,  Peter F. Way

Inventor： Eric R. Hansen ,  Ralph A. Supelak ,  James R. Tutt ,  Peter F. Way

IPC: F27B7/36

CPC classification number: F27B7/362 ,  C04B7/43 ,  C04B7/434 ,  F27B7/16 ,  F27B7/162 ,  F27B7/2033 ,  F27B7/32 ,  F27B7/34 ,  F27B7/42 ,  Y02P40/121 ,  C04B7/364

Abstract: A method is described for reducing NOx emissions and improving energy efficiency during mineral processing in a rotary kiln. The method comprises injection of air with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel or in a preheater/precalciner vessel.

Abstract translation: 描述了一种用于在回转窑矿物加工过程中减少NOx排放并提高能量效率的方法。 该方法包括将高速/高动能的空气注入窑内以减少或消除窑气的分层。 该方法可用于在回转窑容器或预热器/预分解器容器中混合气体。

公开(公告)号：US07311519B2

公开(公告)日：2007-12-25

申请号：US10535903

申请日：2003-11-21

Applicant: Shinji Shima ,  Yuichi Sakurai ,  Masahide Nagatomi

Inventor： Shinji Shima ,  Yuichi Sakurai ,  Masahide Nagatomi

IPC: F27B9/18

CPC classification number: F27D3/0033 ,  F27B3/18 ,  F27B7/32 ,  F27D3/0025 ,  F27D3/12 ,  F27D2003/0063 ,  F27D2003/0066 ,  F27D2003/121

Abstract: The invention provides a raw materials feeding apparatus capable of uniformly dispersing and feeding into a furnace agglomerated raw materials that are likely to undergo dusting, deformation and mutual adhesion. In a raw material feeding apparatus for a rotary hearth furnace, for feeding raw materials to a rotary hearth furnace by using a flat belt conveyor, the invention employs a construction in which a scraper for guiding the raw materials on the flat belt conveyor to a side surface of the flat belt conveyor is arranged obliquely to a traveling direction of the flat belt conveyor. Preferably, the scraper is arranged in such a manner as to guide the raw materials to both sides of the flat belt conveyor.

Abstract translation: 本发明提供一种能够均匀分散并投入炉中的可能发生粉尘，变形和相互粘附的附聚原料的原料进料装置。 在用于转底炉的原材料供给装置中，通过使用平带式输送机将原料供给到转底炉中，本发明采用这样一种结构，其中将用于将平皮带式输送机上的原料引导到一侧 扁平带式输送机的表面倾斜地布置在平带式输送机的行进方向上。 优选地，刮刀布置成将原材料引导到平带式输送机的两侧。

公开(公告)号：US6050203A

公开(公告)日：2000-04-18

申请号：US895434

申请日：1997-07-16

Applicant: Theodore J. Reese ,  Eric R. Hansen ,  Michel R. Benoit ,  James R. Tutt

Inventor： Theodore J. Reese ,  Eric R. Hansen ,  Michel R. Benoit ,  James R. Tutt

IPC: C04B7/44 ,  F23G5/08 ,  F23G5/20 ,  F23G5/44 ,  F27B7/32 ,  F27B7/34 ,  F27D99/00 ,  A47J36/00

CPC classification number: F27B7/32 ,  C04B7/4407 ,  C04B7/4438 ,  F23G5/08 ,  F23G5/20 ,  F23G5/448 ,  F27B7/34 ,  F23G2203/206 ,  F23G2205/16 ,  F23G2206/201 ,  F23G2207/101 ,  F23G2900/52002 ,  F23J2217/101 ,  F23J2217/102 ,  F27B2007/3247 ,  F27D2099/0051 ,  Y02E20/363 ,  Y02P40/126

Abstract: A method and apparatus is described for environmentally sound usage of combustible hazardous waste as supplemental fuel in operating rotary cement kilns. The apparatus comprises an open port in the rotary vessel at a point where during cement kiln operation the in-process mineral material is in a calcining state and where kiln gas temperatures are sufficient to decompose volatile components of the waste fuel. A drop tube extending from the port into the kiln is provided to prevent in-process mineral from escaping through the port during rotation of the rotary vessel. Combustible solids are delivered through the port under the force of gravity and air is continuously drawn into the rotary vessel through the open port during kiln operation. The apparatus and method allow efficient usage of combustible solid waste as a supplemental fuel for cement kiln operation.

Abstract translation: 描述了在操作旋转水泥窑中作为补充燃料的可燃危险废物的无害环境使用的方法和装置。 该设备包括旋转容器中的开放端口，在水泥窑操作过程中，工艺中的矿物材料处于煅烧状态，并且其中窑气温度足以分解废燃料的挥发性组分。 提供从端口延伸到窑内的落管，以防止在旋转容器旋转期间在工艺中的矿物质通过端口逸出。 可燃固体在重力的作用下通过端口输送，并且在窑炉操作期间，空气通过开口连续地吸入旋转容器。 该装置和方法允许有效利用可燃固体废物作为水泥窑操作的补充燃料。

公开(公告)号：US5989017A

公开(公告)日：1999-11-23

申请号：US837690

申请日：1997-04-22

Applicant: Lawrence Paul Evans

Inventor： Lawrence Paul Evans

IPC: C04B7/43 ,  C04B7/44 ,  F23G7/12 ,  F27B7/20 ,  F27B7/32 ,  F27B7/34 ,  F27D3/00 ,  F27D99/00 ,  F27B15/00

CPC classification number: F27B7/20 ,  C04B7/434 ,  C04B7/443 ,  F23G7/12 ,  F27B7/2016 ,  F27B7/2033 ,  F27B7/2066 ,  F27B7/32 ,  F27B7/34 ,  F23G2206/201 ,  F23G2209/281 ,  F27D2003/0063 ,  F27D2099/0051 ,  Y02E20/363 ,  Y02P40/126

Abstract: Waste tires are disposed of in a cement-manufacturing or other mineral-burning process by introducing the tires into the hot gas stream at at least one point between the mineral-inlet end of a rotary kiln and the lowermost cyclone of an associated preheater system, e.g. into the gas stream within a precalciner vessel or riser duct, the tires being maintained in contact with the hot gas for a sufficient period to effect at least partial combustion of the tires. As an alternative, the tires may be introduced into a Lepol grate preheater.

Abstract translation: 废轮胎在水泥制造或其他矿物燃烧过程中通过将轮胎在回转窑的矿物入口端和相关联的预热器系统的最低旋风分离器之间的至少一点处引入热气流中来处理， 例如 进入预分解器容器或提升管内的气流中，轮胎保持与热气接触足够的时间以至少部分地燃烧轮胎。 作为替代方案，可将轮胎引入Lepol炉排预热器。

公开(公告)号：US5082534A

公开(公告)日：1992-01-21

申请号：US494256

申请日：1990-03-14

Applicant: Fred A. Breu

Inventor： Fred A. Breu

IPC: B09B3/00 ,  C10B1/10 ,  C10B49/04 ,  C10B53/00 ,  C10B53/07 ,  C10G1/00 ,  C10G1/10 ,  C10J3/00 ,  F27B7/00 ,  F27B7/08 ,  F27B7/32

CPC classification number: C10B53/07 ,  C10B1/10 ,  C10B49/04 ,  C10B53/00 ,  F27B7/00 ,  F27B7/08 ,  F27B7/32 ,  Y02E50/30 ,  Y02P20/143

Abstract: A rotary, continuous pyrolytic conversion system converts solid hydrocarbon containing feedstocks into gases, liquid hydrocarbons and char. A converter drum is contained within an outer drum which is in substantially air-tight relationship with an injector for introducing the feedstock in the form of bales and with a discharge chute for the solid products of pyrolysis. A casing around the outer stationary drum defines an oven chamber which is heated by combustion products. A rod extends into the injection end of the converter drum for supporting scrapers against the inner periphery of the converter drum. A crusher bar is carried in the drum at the discharge end thereof and crushes the solid products. A second pyrolysis reactor may receive the solid pyrolysis products and be operative at higher temperature than the first converter to destroy chlorinated hydrocarbons.

公开(公告)号：US4930965A

公开(公告)日：1990-06-05

申请号：US275788

申请日：1988-11-23

Applicant: Charles D. Peterson ,  James R. Tutt ,  John Cody

Inventor： Charles D. Peterson ,  James R. Tutt ,  John Cody

IPC: B09B20060101 ,  B09B3/00 ,  C04B7/24 ,  C04B7/44 ,  C10L5/48 ,  F23G5/08 ,  F23G5/20 ,  F23G5/44 ,  F27B7/32 ,  F27B7/34 ,  F27D99/00

CPC classification number: C04B7/4438 ,  C04B7/4407 ,  F23G5/08 ,  F23G5/20 ,  F23G5/448 ,  F27B7/32 ,  F27B7/34 ,  F23G2203/206 ,  F23G2206/201 ,  F27B2007/3247 ,  F27D2099/0051 ,  Y02E20/363 ,  Y02P40/126

Abstract: An apparatus is provided for charging containerized fuel, particularly combustible hazardous waste homogenates, through a wall of a rotating kiln with minimal perturbation of mineral processing conditions. During kiln rotation fuel modules are loaded into the apparatus and charged into the kiln through a port in the kiln cylinder wall and onto the contained mineral bed. In a preferred embodiment the apparatus includes a device for actuating a port closure and a drop tube extending from the port into the kiln cylinder and positioned so that in-process mineral material does not contact the port closure during rotation of the kiln cylinder.

Abstract translation: 提供了一种装置，用于通过旋转窑的壁对集装箱燃料，特别是可燃危险废物均质器进行充气，以最小的矿物加工条件扰动。 在窑转动期间，将燃料模块装载到设备中，并通过窑缸壁中的一个端口和所含的矿床装入窑内。 在优选实施例中，该装置包括用于致动端口封闭件的装置和从该端口延伸到窑缸中并且定位成使得在窑缸旋转期间处理中的矿物材料不接触端口封闭件的落管。

公开(公告)号：US3584850A

公开(公告)日：1971-06-15

申请号：US3584850D

申请日：1969-07-02

Applicant: UNITED STATES STEEL CORP

Inventor： BRANDVOLD WILLIAM W ,  TRESOUTHICK STEWART W

IPC: C22B1/24 ,  F27B7/02 ,  F27B7/04 ,  F27B7/20 ,  F27B7/32 ,  F27B7/38 ,  F27B7/42 ,  F27B7/00

CPC classification number: C22B1/2406 ,  C22B1/2413 ,  F27B7/32 ,  F27B7/386 ,  F27B7/42 ,  F27B2007/022 ,  F27B2007/025 ,  F27B2007/046 ,  F27B2007/2008 ,  F27B2007/327

Abstract: This invention relates to a method of and apparatus for pyroprocessing raw material having a reaction temperature and containing moisture into sinter. The apparatus has a rotary kiln adapted to receive the raw material pellets at one end of the rotary kiln and to move the raw material pellets along a path of movement in the rotary kiln to the other end of the rotary kiln. Heating means are adjacent the other end of the rotary kiln for directing a heated fluid through the rotary kiln, the rotary kiln having a drying means adjacent the one end of the rotary kiln for heating the raw material pellets by the heated fluid to substantially remove the moisture in the raw material pellets. Cooling means communicate with the drying means for mixing a cooling fluid with the heated fluid to limit the temperature in the drying means below the temperature at which the raw material pellets explode due to rapid heating to a deleteriously high temperature. The rotary kiln has a preheating zone adjacent the drying means further along the path of movement for heating the raw material pellets to a temperature below the reaction temperature. The rotary kiln has a reaction zone adjacent the other end of the rotary kiln for heating the raw material pellets above the reaction temperature to pyroprocess the raw material pellets into the sinter. Restriction means are between the preheating zone and the reaction zone for damming a reservoir of the raw material pellets adjacent the restriction means so that the reservoir of the raw material pellets is protected from the direct radiation of the heated fluid and the temperature of the reservoir of raw material pellets remains unaffected by instantaneous changes in the temperature of the heated fluid, the restriction means being operable to meter minimum layers of the raw material pellets into the reaction zone so that the minimum layers of the raw material pellets are individually and rapidly heated to the reaction temperature by the heated fluid and the raw material pellets are converted into sinter. The method includes the steps of receiving the raw material pellets at one end of a rotary kiln and moving the raw material pellets along a path of movement in the rotary kiln to the other end of the rotary kiln; directing a heated fluid through the rotary kiln; heating the raw material pellets by the heated fluid adjacent the one end of the rotary kiln to substantially remove the moisture in the raw material pellets; mixing a cooling fluid with the heated fluid to limit the temperature (during the removal of the moisture) below the temperature at which the raw material pellets explode due to rapid heating to a deleteriously high temperature; heating the raw material pellets in a preheating zone of the rotary kiln further along the path of movement to a temperature below the reaction temperature; damming a reservoir of the raw material pellets adjacent the preheating zone and further along the path of movement so that the reservoir of the raw material pellets is protected from the direct radiation of the heated fluid and the temperature of the reservoir of the raw material pellets remains unaffected by instantaneous changes in the temperature of the heated fluid; metering minimum layers of the raw material pellets adjacent the preheating zone and further along the path of movement into a reaction zone of the rotary kiln adjacent the other end of the kiln; and heating raw material pellets individually and rapidly in the reaction zone of the rotary kiln to indivIdually and rapidly heat the raw material pellets to the reaction temperature by the heated fluid, thus converting the raw material pellets into the sinter.

公开(公告)号：US2908737A

公开(公告)日：1959-10-13

申请号：US63908057

申请日：1957-02-08

Applicant: DE DOMINICIS GIOVANNI

Inventor： DE DOMINICIS GIOVANNI

IPC: F27B3/10 ,  F27B7/32 ,  F27D11/08 ,  F27D17/00

CPC classification number: F27D17/003 ,  F27B3/10 ,  F27B7/32 ,  F27D11/08 ,  F27D17/00

公开(公告)号：US2590090A

公开(公告)日：1952-03-25

申请号：US69737346

申请日：1946-09-16

Applicant: ERIE MINING CO

Inventor： DE VANEY FRED D

IPC: C22B1/24 ,  F27B7/00 ,  F27B7/32 ,  F27B7/38 ,  F27D99/00

CPC classification number: C22B1/2413 ,  F27B7/00 ,  F27B7/32 ,  F27B7/383 ,  F27D2099/0056 ,  Y10S425/101