A fluidized reaction device and fluidized reaction method for coating anti-sticking agent to inhibit iron ore powder from cohesive loss

A technology of fluidization reaction and anti-adhesion agent, applied in the direction of fluidized bed furnace, furnace type, furnace, etc., can solve the problem of difficulty in effectively suppressing the loss of iron ore powder adhesion, so as to inhibit the loss of adhesion and accelerate the cooling process. , the effect of improving experimental efficiency

Active Publication Date: 2018-04-20
ANHUI UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above technology has improved the existing technology, but it is difficult to effectively suppress the cohesion loss during the iron ore powder reduction process

Method used

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  • A fluidized reaction device and fluidized reaction method for coating anti-sticking agent to inhibit iron ore powder from cohesive loss
  • A fluidized reaction device and fluidized reaction method for coating anti-sticking agent to inhibit iron ore powder from cohesive loss
  • A fluidized reaction device and fluidized reaction method for coating anti-sticking agent to inhibit iron ore powder from cohesive loss

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] combine figure 1 , figure 2 and Figure 5 , a fluidized reaction device coated with an anti-adhesive agent of the present invention to inhibit the cohesion and loss of iron ore powder, including a double-layer tube reaction unit 100, a heating unit 200 and a material mixing unit 300; Figure 5 As shown, the material mixing unit 300 is used to mix the iron ore powder and the anti-sticking agent, and the mixed iron ore powder and the anti-sticking agent are added to the double-layer tube reaction unit 100; the material mixing unit 300 includes a mixing tank 310 and agitator 320, iron ore powder and anti-sticking agent are added into the mixing tank 310, and the agitator 320 is turned on for mixing.

[0043] The double-tube reaction unit 100 of the present embodiment includes a reaction inner tube 110, an outer sleeve 120 and a support platform 130, the middle part of the support platform 130 is provided with a through hole matched with the outer sleeve 120, and the out...

Embodiment 2

[0052] The basic content of this embodiment is the same as that of Embodiment 1, and the difference is that: the bottom of the reaction inner tube 110 is provided with a mesh-like support grate plate 116, and ceramic balls 117 are laid on the support grate plate 116. The ceramic balls 117 is set to 3-5 layers (such as image 3 As shown), preferably three layers, after the gas flows through the multilayer ceramic balls 117, the ceramic balls 117 can make the gas flow evenly distributed in the reaction inner tube 110.

[0053] Such as Figure 6 and Figure 7As shown, the fluidized bed sieve plate 114 includes outer edge air holes 1141, middle air holes 1142, inner edge air holes 1143 and central air holes 1144; inner edge air holes 1143, middle air holes 1142 and outer edge air holes 1141 are arrayed in the center sequentially from inside to outside Outside the air hole 1144; the aperture of the outer edge air hole 1141 is larger than the aperture of the inner edge air hole 11...

Embodiment 3

[0055] The basic content of this embodiment is the same as that of Embodiment 1, the difference being that a transparent observation port 1151 is arranged on the top of the feeding port 115, and the fluidized reduction process of the iron ore powder in the reaction inner tube 110 can be observed through the observation port 1151, thereby improving Visually and accurately study the fluidized reduction process of iron ore powder (such as Figure 4 shown).

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Abstract

The invention discloses a fluidization reaction device and a fluidization reaction method for inhibiting adhesive flow loss of iron ore powder by coating an anti-bonding agent, and belongs to the technical field of ore powder fluidization reduction. The device comprises a double-layer pipe reaction unit, a heating unit and a material uniform mixing unit; the double-layer pipe reaction unit comprises a reaction inner pipe and an external sleeve; the bottom of the reaction inner pipe communicates with the bottom of the external sleeve; a fluidized bed screen plate is arranged in the reaction inner pipe; and a feed port of a reaction cavity and the fluidized bed screen plate form a wrapping reaction cavity. The iron ore powder generates the fluidization reduction reaction under the condition of coating the anti-bonding agent in the fluidization reaction method; and the anti-bonding agent forms uniform graphite or adhesive carbons on the surface of the iron ore powder. The iron ore powder and the anti-bonding powder are fully mixed in the wrapping reaction cavity; the anti-bonding agent coats the surface of the iron ore powder; and the anti-bonding agent forms uniform graphite or adhesive carbons on the surface of the iron ore powder, so that mutual connecting agglomeration of iron whiskers or iron atoms can be prevented, and the adhesive flow loss of the iron ore powder can be inhibited.

Description

technical field [0001] The invention belongs to the technical field of ore powder fluidized reduction, and more specifically relates to a fluidized reaction device and a fluidized reaction method for coating an anti-sticking agent to suppress iron ore powder from cohesive loss. Background technique [0002] The fluidized bed direct reduction process is a major breakthrough in the field of metallurgy. Since the fluidized bed does not require air permeability, it can directly use iron ore powder that cannot be directly used in blast furnaces and shaft furnaces; the fluidized bed ironmaking process is ironmaking Process energy saving and environmental protection, rational use of domestic low-grade, compound symbiotic ore and solving the problem of tight supply of iron ore resources provide a new smelting approach; the fluidized bed direct reduction process not only expands the source of ironmaking raw materials, but also reduces production costs , Improve the competitiveness of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B13/00
CPCC21B13/0033C21B13/008
Inventor 徐其言王海川何飞王建军
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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