Process and apparatus for calcining finely divided cement raw materials
including finely divided combustible materials
    6.
    发明授权
    Process and apparatus for calcining finely divided cement raw materials including finely divided combustible materials 失效
    用于煅烧细碎水泥原料(包括细分的可燃材料)的方法和设备

    公开(公告)号:US4197137A

    公开(公告)日:1980-04-08

    申请号:US965989

    申请日:1978-12-04

    CPC分类号: F27B7/2033 C04B7/434

    摘要: Process and apparatus for calcining finely divided cement raw materials including finely divided combustible materials in a suspension preheater with a calcining furnace. Finely divided calcareous materials are directly charged into the suspension preheater while finely divided argillaceous materials, including combustibles such as oil shale, are charged into a bypass duct for bypassing part of the high temperature gases in the suspension preheater to a calcining zone or calcining furnace. The raw materials charged into the bypass duct are subjected to thermal decomposition, resulting in solids and combustible gases. The combustible gases are separated from the solids and are charged into the calcining zone or calcining furnace while the separated solids are charged into the suspension preheater, mixed with the finely divided calcareous materials, preheated and calcined. Since the finely divided argillaceous materials are mixed with the finely divided calcareous materials, the smooth flow of the cement raw materials in the suspension preheater is ensured.

    摘要翻译: 在具有煅烧炉的悬浮预热器中煅烧细分的水泥原料(包括细碎的可燃材料)的方法和设备。 精细分解的钙质材料直接装入悬浮预热器中,同时将细碎的泥质材料(包括可燃物如油页岩)装入旁路管道中,以将悬浮预热器中的一部分高温气体旁路到煅烧区或煅烧炉。 装入旁通管道的原料经受热分解,产生固体和可燃气体。 将可燃气体与固体分离,并将其装入煅烧区或煅烧炉中,同时将分离的固体装入悬浮预热器中,与细碎的钙质材料混合,预热和煅烧。 由于细碎的泥质材料与细碎的钙质材料混合,确保了悬浮预热器中水泥原料的平稳流动。