Heating furnace heat storage box repairing material and preparation method thereof

A technology for repairing materials and heating furnaces, applied in the production of clay products, other household appliances, ceramic materials, etc., can solve problems such as affecting production efficiency, burning external steel structures, and increasing the temperature in the heating furnace area, and improving thermal shock stability. Service life, good wear resistance and erosion resistance, the effect of increasing the overall structural strength

Pending Publication Date: 2022-03-04
河北鑫达钢铁集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the use of steel rolling heating furnaces in iron and steel enterprises, the interior of the heat storage box belonging to the combustion system is subjected to the alternating action of cold and hot air and gas, and there will be different degrees of cold shrinkage cracks and cracks, which will seriously cause the heat storage box. The upper part of the refractory falls off, collapses, and even gas leaks and flames overflow, resulting in a low service life of the overall heat storage box, requiring frequent maintenance, which seriously affects pr

Method used

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  • Heating furnace heat storage box repairing material and preparation method thereof
  • Heating furnace heat storage box repairing material and preparation method thereof
  • Heating furnace heat storage box repairing material and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0023] Process step of the method of the present regenerative furnace casing repair materials are: (1) a small ball mill and crusher regeneration regenerator, silica, and alumina porcelain plants are crushed, milled; by magnetic attraction, and double perforated screen pore size of 0.001 ~ 0.1mm above four ball abrasive material is screened to remove impurities in the feedstock;

[0024] (2) selecting a particle diameter of 0.001 ~ 0.1mm selected metallic aluminum; refractory fiber blanket containing zirconium, zirconium-containing refractory processed into a cotton-like fiber filaments; and powder materials to obtain all of the aggregate material;

[0025] (3) The mixed powder aggregate, for the first time with stirring, the stirring time is 5 ~ 10min, to mix the aggregate, to obtain a mixed aggregate;

[0026] (4) adding the mixed aggregate resole, a second stirring, stirring time 20 ~ 30min; and the first material trapped, stuck feed time 24 ~ 30h, trapped material temperature ...

Example Embodiment

[0030] Example 1-7: This regenerative furnace casing repair materials and preparation method described below.

[0031] Group allocation (1) each of the embodiments shown in Table 1 aggregate ratio; excipients and the amount of binding agent added patch feed in Table 2.

[0032] Table 1: The distribution ratio set aggregate (wt%)

[0033]

[0034] Wherein the aggregate particle size is 0.001 ~ 0.1mm.

[0035] Table 2: The addition amount of excipients and binders in the feed patch (wt%)

[0036]

[0037] (2) prepared according to the process described above, each of the examples of specific embodiments of the process parameters shown in Table 3.

[0038] Table 3: Examples of process parameters for each specific embodiments

[0039]

[0040]

[0041] Table 3, and the stirring time units are trapped material min, feed temperatures are trapped deg.] C.

[0042] (3) The material obtained in Example repair performed at 110 deg.] C cold compressive strength, the compressive stren...

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Abstract

The invention discloses a repairing material for a heat storage box of a heating furnace and a preparation method of the repairing material. The repairing material comprises aggregate, auxiliary materials and a binding agent, the aggregate is prepared from the following components in percentage by weight: 70%-80% of regenerated heat accumulator powder, 5%-8% of silicon oxide micro powder, 5%-10% of power plant porcelain bottle micro powder, 5%-10% of alumina micro powder and 0.5%-2% of metal aluminum powder; the auxiliary material is zirconium-containing refractory fibers, and the addition amount of the auxiliary material in the repairing material is 0.1%-1%; the binding agent is added in the repairing material according to the following amounts: 0.5%-1.5% of resole, 2.5%-3% of aluminate coagulant, 1%-2% of silica gel expanding agent and 1%-2% of industrial tar. The repairing material can be made of waste materials, so that the utilization rate of the waste materials can be effectively increased; the wear-resistant and erosion-resistant thermal shock-resistant coating has good high-temperature adhesion, good wear-resistant and erosion-resistant performance and good durability, has the characteristics of wear resistance, scouring resistance, no falling and good thermal shock stability, prolongs the service life of the thermal shock-resistant coating, and reduces the maintenance cost.

Description

technical field [0001] The invention relates to a repairing material for a heating furnace, in particular to a repairing material for a heat storage box of a heating furnace and a preparation method thereof. Background technique [0002] During the use of steel rolling heating furnaces in iron and steel enterprises, the interior of the heat storage box belonging to the combustion system is subjected to the alternating action of cold and hot air and gas, and there will be different degrees of cold shrinkage cracks and cracks, which will seriously cause the heat storage box. The upper refractory material falls off, collapses, and even gas leaks and flames overflow, which leads to a low service life of the overall heat storage box and requires frequent maintenance, which seriously affects production efficiency. [0003] Generally, the heat storage tank cannot be repaired or temporarily repaired during routine maintenance. For temporary repairs, ordinary high-alumina refractory...

Claims

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Application Information

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IPC IPC(8): C04B35/66C04B33/13C04B33/132C04B33/36
CPCC04B35/66C04B33/1324C04B33/131C04B33/13C04B33/1305C04B33/36C04B33/1315C04B2235/3418C04B2235/9669C04B2235/9607C04B2235/402Y02P40/60
Inventor 王艳丽崔新华
Owner 河北鑫达钢铁集团有限公司
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