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    Center draft asphaltic concrete drum mixer
    31.
    发明授权
    Center draft asphaltic concrete drum mixer 失效
    沥青混凝土搅拌机中心草稿

    公开(公告)号：US4298287A

    公开(公告)日：1981-11-03

    申请号：US143787

    申请日：1980-04-25

    Applicant: Louis N. McCarter, III ,  W. Robert Deemer ,  Robert G. Meeker ,  Harry B. Weaver ,  John W. Smith

    Inventor： Louis N. McCarter, III ,  W. Robert Deemer ,  Robert G. Meeker ,  Harry B. Weaver ,  John W. Smith

    IPC: E01C19/10 ,  B28C1/22 ,  B28C5/00

    CPC classification number: E01C19/1031 ,  E01C19/1036 ,  E01C2019/1095

    Abstract: In a continuous drum mix asphalt plant, dust is exhausted from an intermediate zone of the drum mixer between its drying and mixing zones. The dust is exhausted radially through openings into a collection housing, which communicates with a dust collector and exhaust blower. An end housing at the discharge end of the drum communicates with the same dust collector and blower. Dampers are provided to control the relative proportion of air exhausted from the drum through the respective housings. Aggregate deflectors on the interior wall of the drum at the intermediate zone allow air and dust to flow while inhibiting the flow of aggregate. The collection housing surrounding the intermediate zone is of a size such as to produce a reduction in the velocity of the air as it passes out of the drum. Consequently, it serves as a knock-out box for the collection of larger particles which are carried out of the drum, but which settle out of the air stream as a result of the velocity decrease. These collected particles are reintroduced into the drum by scoops on the exterior of the drum. These scoops are also used for the introduction of recycled asphaltic concrete.

    Abstract translation: 在连续的鼓式混合沥青设备中，粉尘从其在干燥和混合区域之间的鼓式混合器的中间区域排出。 灰尘通过开口径向排放到收集壳体中，该收集壳体与集尘器和排风机连通。 滚筒排出端的端部壳体与相同的集尘器和鼓风机连通。 提供阻尼器以控制从鼓通过相应外壳排出的空气的相对比例。 在中间区域的鼓的内壁上的聚集偏转器允许空气和灰尘流动同时抑制聚集体的流动。 围绕中间区域的收集壳体具有的尺寸使得当空气流出滚筒时，空气的速度降低。 因此，它用作收集较大的颗粒的敲除箱，其由滚筒进行，但由于速度的降低而沉淀在空气流中。 这些收集的颗粒通过滚筒外部的勺子重新引入滚筒。 这些勺子也用于引进再生沥青混凝土。

    Process for recycling asphalt-aggregate compositions
    32.
    再颁专利
    Process for recycling asphalt-aggregate compositions 失效
    回收沥青骨料组合物的方法

    公开(公告)号：USRE30685E

    公开(公告)日：1981-07-21

    申请号：US875397

    申请日：1978-02-06

    Applicant: Robert L. Mendenhall

    Inventor： Robert L. Mendenhall

    IPC: B01F15/06 ,  C08J11/04 ,  C08L95/00 ,  E01C19/10 ,  F28D11/04

    CPC classification number: C08J11/04 ,  B01F15/066 ,  C08L95/00 ,  E01C19/1036 ,  E01C19/1077 ,  F28D11/04 ,  C08J2395/00 ,  E01C2019/109 ,  Y02P20/143 ,  Y02W30/70

    Abstract: In recycled asphalt-aggregate compositions prepared by adding a suitable amount of make-up asphalt to pieces of the used composition and heating the mixture in a rotating cylindrical drum by tumbling the composition over heated pipes as it is gradually directed towards an output end of the drum, the improvement comprising adding an amount of petroleum hydrocarbon to achieve a laid down asphalt penetration of between 25 and 300 dmm at 77.degree. F. A further embodiment of the improved process comprises venting a mixture of hydrocarbon gases and moisture vaporized from the hot composition mixture at the output end of the apparatus, condensing the moisture and removing it and returning the hydrocarbon gases to a combustion chamber for providing heat to the apparatus tubes. Still another improvement comprises an apparatus modification wherein a plurality of relatively short pipes are disposed in the forward ends of the heating tubes through a front plate displaced from the forward end wall of the drum with the open pipe ends exposed to the combustion chamber for providing heat to the interior of the heating tubes.

    Asphalt-aggregate production
    33.
    发明授权
    Asphalt-aggregate production 失效
    沥青骨料生产

    公开(公告)号：US4182631A

    公开(公告)日：1980-01-08

    申请号：US718063

    申请日：1976-08-26

    Applicant: Robert L. Mendenhall

    Inventor： Robert L. Mendenhall

    IPC: C08L95/00 ,  C10C3/00 ,  E01C19/10 ,  F26B11/02 ,  C04B13/30

    CPC classification number: F26B11/026 ,  C08L95/00 ,  C10C3/007 ,  E01C19/1036 ,  E01C19/1072 ,  E01C2019/1095

    Abstract: In a process for producing asphalt-aggregate compositions in a conventional type dryer-mixer drum in which aggregate is exposed directly to flame and hot gases of combustion while it cascades in the rotating drum, and in which the flame and hot gases of combustion are directed into an input end of the drum, the improvement comprises separating the aggregate into a plurality of different portions or increments each having different particle size ranges, introducing the coarse or larger aggregate particles into the drum and directly exposing them to the flame, its radient heat, hot gases of combustion at the input end, and introducing the finer or smaller aggregate particles downstream from the input end and away from direct exposure to the flame and extremely hot gases in a temperature zone which will avoid overheating the fine particles. The improved apparatus includes means for introducing the coarse particles at the input drum end for direct exposure to the flame or hottest gases and means for introducing the fine or smaller particles in a cooler zone of the apparatus.

    Abstract translation: 在用于在传统型干燥器 - 混合器鼓中生产沥青骨料组合物的方法中，其中聚集体直接暴露于火焰和热的燃烧气体中，同时在旋转滚筒中级联，并且其中燃烧的火焰和热气体被引导 进入滚筒的输入端，改进包括将聚集体分成多个不同的部分或每个具有不同粒度范围的增量，将粗的或较大的聚集体颗粒引入滚筒并将它们直接暴露于火焰中，其辐射热 在输入端的燃烧热气体，并且在输入端下游引入更细或更小的聚集体颗粒，并且避免在温度区域直接暴露于火焰和极热气体，这将避免细颗粒过热。 改进的装置包括用于将粗颗粒引入输入鼓端以直接暴露于火焰或最热气体的装置，以及用于将细颗粒或较小颗粒引入装置的较冷区域的装置。

    Recycled asphalt-aggregate process and apparatus
    34.
    发明授权
    Recycled asphalt-aggregate process and apparatus 失效

    公开(公告)号：US4142803A

    公开(公告)日：1979-03-06

    申请号：US867700

    申请日：1978-01-09

    Applicant: Robert L. Mendenhall

    Inventor： Robert L. Mendenhall

    IPC: E01C19/10 ,  B28C1/22

    CPC classification number: E01C19/1036 ,  E01C2019/1095

    Abstract: In a process for recycling asphalt and aggregate containing composition, the improvement comprises separating the composition into a plurality of portions having different particle sizes, ranging from coarse to fine, introducing the particle portions into different mixing and heating drums, one of the drums being for the coarse particle portion, and one or more additional drums for smaller particle portions, and heating the particles in the respective drums with hot gases of combustion at temperatures below that which will burn the asphalt particles in each of the respective drums.

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