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Iron mine fluidization suspension preheating prereduction device and method

A suspension preheating and suspension device technology, applied to fluidized bed furnaces, furnaces, furnace types, etc., can solve the problems of high energy consumption, heavy pollution, and inability to carry out normal production in blast furnace ironmaking, so as to reduce energy consumption and improve social efficiency. benefit, save the effect of preheating heat

Pending Publication Date: 2018-01-26
徐州贝克福尔节能环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a high proportion of coking coal is used in traditional blast furnace ironmaking ingredients. Coking and roasting in blast furnace ironmaking will cause related environmental emission problems. Blast furnace ironmaking has disadvantages such as high energy consumption and heavy pollution. The price of coking coal is also high There are problems in the process. It is estimated that my country's coking coal resources will be exhausted after 2070, and the traditional blast furnace ironmaking process will not be able to carry out normal production.

Method used

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  • Iron mine fluidization suspension preheating prereduction device and method
  • Iron mine fluidization suspension preheating prereduction device and method
  • Iron mine fluidization suspension preheating prereduction device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: The iron ore suspension preheating pre-reduction device includes a feeder, a suspension preheating device, a roasting furnace, and a suspension device.

[0042] The suspension device includes a cyclone separator, and the cyclone separator is provided with a feeding pipe, an ascending pipe, a heat exchange pipe and an inner cylinder. Specific as image 3 As shown, the material falling from the upper stage meets the rising airflow in the heat exchange pipe, the material is blown away by the airflow, fully dispersed to complete the gas-solid heat exchange, the material is carried by the airflow into the cyclone separator to complete the separation of the material and the airflow, and the material enters the lower part The discharge nozzle, while the airflow enters the ascending pipe from the upper part.

[0043] attached figure 1 In order to implement the schematic diagram, in this embodiment, the suspension preheating and pre-reduction devices are two stag...

Embodiment 2

[0052] Embodiment 2: Iron ore suspension preheating pre-reduction device, including a feeder, a suspension preheating device, a roasting furnace, and a suspension device.

[0053] The suspension device includes a cyclone separator, and the cyclone separator is provided with a feeding pipe, an ascending pipe, a heat exchange pipe and an inner cylinder. Specific as image 3 As shown, the material falling from the upper stage meets the rising airflow in the heat exchange pipe, the material is blown away by the airflow, fully dispersed to complete the gas-solid heat exchange, the material is carried by the airflow into the cyclone separator to complete the separation of the material and the airflow, and the material enters the lower part The discharge nozzle, while the airflow enters the ascending pipe from the upper part.

[0054] When adopting three-stage suspension preheating device 2 and one-stage suspension device 4, the specific method process is as follows:

[0055] Each ...

Embodiment 3

[0064] Embodiment 3: The iron ore suspension preheating pre-reduction device includes a feeder, a suspension preheating device, a roasting furnace, and a suspension device. The preheating and pre-reduction method adopts no less than two-stage suspension preheating device 2 and one-stage suspension device 4. When three-stage suspension preheating device 2 and one-stage suspension device 4 are used, the process of the method is as follows:

[0065] attached figure 2 In order to implement the schematic diagram, in this embodiment, the suspension preheating and pre-reduction devices are three-stage, and the suspension devices are connected to each other. The first stage suspension preheating device is composed of suspension device C1A and suspension device C1B, the second stage suspension preheating device is composed of suspension device C2A and suspension device C2B, and the third stage suspension preheating device is composed of suspension device C3A and suspension device C3B ...

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Abstract

The invention relates to an iron mine fluidization suspension preheating prereduction device and an iron mine fluidization suspension preheating prereduction method, and belongs to an iron mine smelting device and an iron mine smelting method. The iron mine fluidization suspension preheating prereduction device comprises a loading machine, a suspension preheating device, a roasting furnace and a suspension device; the output end of the loading machine is connected with the feeding end of the suspension preheating device; the discharging end of the suspension preheating device is connected withthe feeding end of the roasting furnace; and the discharging end of the roasting furnace is connected with the feeding end of the suspension device. The iron mine powdered material is fed into the suspension preheating device by the loading machine, is preheated stage by stage, enters the roasting furnace to perform roasting preduction and enters the last-stage suspension device, and hot materials are sprayed into a melting reducing furnace after discharging to perform melting smelting. The suspension preheating device adopts parallel gas flow, heat exchange is realized for many times by a mixed connecting and mixed flowing mode of the crossed material liquid, hot flue gas discharged by the roasting furnace is subjected to heat exchange with the materials through the suspension preheatingdevice, the afterheat of the discharged waste gas is subjected to electricity generation, and the materials are dried and then are purified and discharged. The iron mine fluidization suspension preheating prereduction device realizes the technologies of suspension preheating, suspension roasting prereduction, afterheat utilization, raw material saving and waste gas treatment.

Description

technical field [0001] The invention relates to an iron ore smelting device and method, in particular to an iron ore fluidized suspension preheating and prereduction device and method. Background technique [0002] Most of my country's iron ore smelting technology adopts traditional blast furnace ironmaking technology. However, a high proportion of coking coal is used in traditional blast furnace ironmaking ingredients. Coking and roasting in blast furnace ironmaking will cause related environmental emission problems. Blast furnace ironmaking has disadvantages such as high energy consumption and heavy pollution. The price of coking coal is also high There are problems in the process. It is estimated that my country's coking coal resources will be exhausted after 2070, and the traditional blast furnace ironmaking process will not be able to carry out normal production. Contents of the invention [0003] In order to overcome the defects in the prior art, the present inventio...

Claims

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Application Information

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IPC IPC(8): C22B1/02C21B13/00
Inventor 张宏建刘刚王兆平王士军李梦
Owner 徐州贝克福尔节能环保技术有限公司