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Process and device for lime calcining by cement kiln tail

A technology for calcining lime and cement kiln, which is applied in the field of lime calcining, which can solve the problems of high power consumption for grinding and poor grindability of massive lime, and achieve long equipment life, small footprint of equipment and utilization of vertical space Effect

Pending Publication Date: 2019-06-18
NANJING KISEN INT ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, powdery lime is obtained by selecting, crushing, and grinding block lime, but the grindability of block lime is worse than that of limestone, and the grinding power consumption is high

Method used

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  • Process and device for lime calcining by cement kiln tail
  • Process and device for lime calcining by cement kiln tail
  • Process and device for lime calcining by cement kiln tail

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Experimental program
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Embodiment 1

[0034] refer to figure 1 , Embodiment 1 of the present invention provides a kind of device that utilizes cement kiln tail calcined lime, comprises the preheating unit 1 of cement kiln tail, also comprises calciner 2, cyclone separator 3, cooling unit 4, and described preheating unit 1 consists of It consists of interconnected multi-stage preheating cyclones (from top to bottom are the first stage, the second stage, ..., the penultimate stage, the penultimate stage cyclone), and the penultimate stage of this preheating unit 1 The first-stage cyclone is replaced by the cyclone separator 3 (if the original cement kiln tail no longer produces cement, the last-stage cyclone of the preheating unit 1 of the preheating unit is no longer used, and the last stage of the preheating unit 1 of the original cement kiln tail can be replaced. The cylinder is directly transformed into a cyclone separator with a bottom material retention area, and the cooling unit 4 is arranged and designed acc...

Embodiment 2

[0039] refer to figure 2 , Embodiment 2 of the present invention provides a kind of device that utilizes cement kiln tail calcined lime, comprises the preheating unit 1 of cement kiln tail, also comprises calciner 2, cyclone separator 3, cooling unit 4, and described preheating unit 1 consists of It consists of interconnected multi-stage preheating cyclones (from top to bottom are the first stage, the second stage, ..., the penultimate stage, the penultimate stage cyclone), and the penultimate stage of this preheating unit 1 The first-stage cyclone is replaced by the cyclone separator 3 (if the original cement kiln tail no longer produces cement, the last-stage cyclone of the preheating unit 1 of the preheating unit is no longer used, and the last stage of the preheating unit 1 of the original cement kiln tail can be replaced. The cylinder is directly transformed into a cyclone separator with a bottom material retention area, and the cooling unit 4 is arranged and designed ac...

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Abstract

The invention provides a process and device for lime calcining by cement kiln tail. The device comprises a cement kiln tail preheating unit, a decomposition furnace, a cyclone separator and a coolingunit. The preheating unit is formed by connection of multistage preheating cyclones, the last-stage cyclone of the preheating unit is replaced by the cyclone separator, and a discharging port of the penultimate-stage cyclone of the preheating unit is connected with a feeding port of the decomposition furnace. An air inlet of the cyclone separator is connected with a strip airflow outlet of the decomposition furnace, a bottom discharging port of the cyclone separator is connected with a feeding port of the cooling unit, and an air outlet of the cooling unit is connected with a conical air inletof the decomposition furnace. The process and the device have advantages of low cement kiln transformation, small floor space, high raw material and fuel adaptability, stability in operation and highproduct quality.

Description

technical field [0001] The invention relates to the field of lime calcining, in particular to a device and process for calcining lime by using cement kiln tail. Background technique [0002] Lime is the basic raw material of the iron and steel industry, and it is also widely used in the fields of electric power, construction, chemical industry, environment, agriculture, etc. Among them, the iron and steel industry and the calcium carbide industry mainly use lump lime, while the industries such as electric power, building materials, papermaking, desulfurization, and sewage treatment mainly use lump lime. Use powdered lime. The technology of pressing powdered lime into balls is becoming more and more mature. Pressing powdered lime into pellets of various sizes will further expand the application range of powdered lime, and the market potential is huge. [0003] At present, powdery lime is obtained by selecting, crushing, and grinding block lime, but the grindability of block ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B2/10F27B17/00F27D13/00F27D15/02
CPCY02P10/143
Inventor 王飞康宇罗超
Owner NANJING KISEN INT ENG
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