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Reduction reaction device for powdery materials

A reaction device and technology for powdery materials, applied in the metallurgical field, can solve the problems of insufficient reduction reaction, low reduction reaction efficiency, poor sealing performance of the feeding port, etc., and achieve the effects of improving reduction reaction efficiency, avoiding clogging and uniform heating

Pending Publication Date: 2017-10-03
SHENWU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the related art, the reduction reaction device for powdery materials has problems such as uneven feeding, slow feeding speed, and poor sealing of the feeding port, resulting in low efficiency of the reduction reaction of the material, and the reduction reaction is not thorough enough

Method used

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  • Reduction reaction device for powdery materials
  • Reduction reaction device for powdery materials
  • Reduction reaction device for powdery materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Embodiment one: the present embodiment material (iron ore powder) rapid reduction method comprises the following steps:

[0071] (1), iron concentrate is added in the reaction chamber from the feed nozzle 3 of reduction reaction device 100;

[0072] (2) The iron grade of iron concentrate is 65%, and the proportion of ore powder particle size less than 0.074mm is not less than 80%;

[0073] (3), the temperature of the regenerative radiant tube 21 of the reduction section 12 of the reduction reaction device 100 is set to 950° C.;

[0074] (4), the normal temperature reducing gas is passed into the reaction chamber from the reducing gas inlet 1311 of the air-cooled area 131, and the reduction reaction is carried out with the iron ore concentrate;

[0075] (5), CO volume fraction in reducing gas is 80%, H 2 The volume fraction is 15%;

[0076] (6) The reducing gas is heated by the regenerative radiant tube 21 during the ascent process, heats up with the falling iron ore po...

Embodiment 2

[0079] Embodiment two: the present embodiment material (iron ore fines) rapid reduction method comprises the following steps:

[0080] (1), iron concentrate is added in the reaction chamber from the feed nozzle 3 of reduction reaction device 100;

[0081] (2) The iron grade of iron concentrate is 65%, and the proportion of ore powder particle size less than 1mm is not less than 80%;

[0082] (3), the temperature of the regenerative radiant tube 21 of the reduction section 12 of the reduction reaction device 100 is set to 950° C.;

[0083] (4), the normal temperature reducing gas is passed into the reaction chamber from the reducing gas inlet 1311 of the air-cooled area 131, and the reduction reaction is carried out with the iron ore concentrate;

[0084] (5), CO volume fraction in reducing gas is 60%, H 2 The volume fraction is 30%;

[0085] (6) The reducing gas is heated by the regenerative radiant tube 21 during the ascent process, heats up with the falling iron ore powde...

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Abstract

The invention discloses a reduction reaction device for powdery materials. The reduction reaction device for powdery materials comprises: a reaction furnace body, the reaction furnace body defines a reaction chamber, and the reaction furnace body is equipped with A feed port, a feed port, a reducing gas inlet, and a reduction tail gas outlet communicated with the reaction chamber and spaced apart from each other; a heating device is arranged in the reaction chamber and located at the feed port and the discharge port Provide heat for the reduction reaction of the material; at least one feed nozzle, the feed nozzle is arranged at the feed inlet, and the feed nozzle is configured to inject the material into the reaction chamber and make it enter The materials in the reaction chamber are dispersed across the cross-section of the reaction chamber. According to the reduction reaction device of the present invention, the feeding is smooth and the material is more evenly distributed on the cross section of the reduction reaction device, the material and the reducing gas can react quickly and fully, and the reduction reaction efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a reduction reaction device for powdery materials. Background technique [0002] In the related art, the reduction reaction device for powdery materials has problems such as uneven feeding, slow feeding speed, and poor sealing of the feeding port, resulting in low efficiency of the reduction reaction of the material, and the reduction reaction is not thorough enough. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. To this end, the present invention proposes a reduction reaction device for powdery materials, the reduction reaction device feeds smoothly and the material is more evenly distributed on the cross section of the reduction reaction device, and the material and the reducing gas can react quickly and fully , greatly improving the efficiency of the reduction reaction....

Claims

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Application Information

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IPC IPC(8): C21B13/04
CPCC21B13/04C21B13/0073
Inventor 吴道洪郑倩倩孟嘉乐窦从从彭丽王培伦
Owner SHENWU TECH GRP CO LTD