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Preparation method of anti-erosion silica brick for carbon calcination furnace

An anti-erosion and calcining furnace technology, applied in the field of refractory materials, can solve the problems of kiln life and safety impact, technical performance cannot be satisfied, etc., to achieve the effect of superior high temperature performance of products, enhanced corrosion resistance, and change of pore shape.

Active Publication Date: 2016-01-27
REFRACTORY MATERIAL OF SINOSTEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, GZ-94 and GZ-95 ordinary silica bricks are generally used for carbon calciner. The technical performance cannot meet the requirements of calciners using petroleum coke raw materials with high sulfur content. The service life and safety of the kiln are seriously affected.

Method used

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  • Preparation method of anti-erosion silica brick for carbon calcination furnace

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A method for preparing an anti-corrosion silica brick for a carbon calciner, the raw materials are proportioned according to the following parts by weight:

[0035] Calcined silica material, particle size 1-2.36mm28%, particle size 0.5-1mm21%, particle size 0.2-0.5mm18%, particle size 0.075-0.1mm24%, particle size 0-0.045mm9%, sintering aid 4%, compound Admixture 1.5%, reinforcing agent 2%, binder 3.8%,

[0036] Mixing: Add the above-mentioned calcined silica material and reinforcing agent into the wet mill, mix for 2 minutes, then add the sintering aid and compound admixture and mix for 3 minutes, add the binder and mix for 15 minutes, and mix until the mud is uniform It can be rolled out softly;

[0037] Molding: Weigh the mixed mud according to a fixed weight and pour it into the mould, and shape it under a pressure of 630 tons;

[0038] Drying: Dry the adobe at 100°C until the residual moisture is 0.6%.

[0039] Firing: Put the obtained bricks into a kiln at 1400...

Embodiment 2

[0041] A method for preparing an anti-corrosion silica brick for a carbon calciner, the raw materials are proportioned according to the following parts by weight:

[0042] Calcined silica material, particle size 1-2.36mm35%, particle size 0.5-1mm15%, particle size 0.2-0.5mm13%, particle size 0.075-0.1mm30%, particle size 0-0.045mm7%, sintering aid 4%, compound Admixture 2.0%, reinforcing agent 1.0%, binder 4%,

[0043] Mixing: add the above-mentioned calcined silica material and reinforcing agent into the wet mill, mix for 2 minutes, then add the sintering aid and compound admixture and mix for 3 minutes, add the binder, mix and roll for 20 minutes, and mix until the mud is uniform It can be rolled out softly;

[0044] Molding: Weigh the mixed mud according to a fixed weight and pour it into the mould, and shape it under a pressure of 630 tons;

[0045] Drying: Dry the adobe at 150°C until the residual moisture is 0.7%.

[0046] Firing: Put the obtained bricks into a kiln a...

Embodiment 3

[0048] A method for preparing an anti-corrosion silica brick for a carbon calciner, the raw materials are proportioned according to the following parts by weight:

[0049] Calcined silica material, particle size 1-2.36mm25%, particle size 0.5-1mm25%, particle size 0.2-0.5mm23%, particle size 0.075-0.1mm20%, particle size 0-0.045mm7%, sintering aid 8%, compound Admixture 1.0%, reinforcing agent 1.2%, binder 6.0%,

[0050] Mixing: add the above-mentioned calcined silica material and reinforcing agent into the wet mill, mix for 2 minutes, then add the sintering aid and compound admixture and mix for 3 minutes, add the binder, mix and roll for 18 minutes, and mix until the mud is uniform It can be rolled out softly;

[0051] Molding: Weigh the mixed mud according to a fixed weight and pour it into the mould, and shape it under a pressure of 630 tons;

[0052] Drying: Dry the adobe at 120°C until the residual moisture is 0.8%.

[0053] Firing: Put the obtained bricks into a kiln...

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Abstract

The invention discloses a preparation method of an anti-erosion silica brick for a carbon calcination furnace. Calcined silica materials with different granularities are taken as main raw materials, a combustion aid, a compound additive, an enhancer and a binding agent are added, the raw materials are mulled, pressed, dried, then put into a kiln, and sintered under the thermal insulation condition for 24-30 hours at the temperature of 1,380 DEG C-1,440 DEG C, a finished product is formed and cooled to the normal temperature, and the anti-erosion silica brick is prepared. The high-temperature performance of the product is excellent, the compactness and the yield of finished products are improved, the erosion resistance is improved, and the service life of the carbon calcination furnace is greatly prolonged.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a method for preparing an erosion-resistant silica brick for a carbon calcination furnace, which can be used in a carbon calcination furnace and has super-strong corrosion resistance. Background technique [0002] In recent years, the high-quality petroleum coke raw materials for carbon calcination furnaces have been decreasing day by day, the grade of raw materials has been reduced, and the impurities such as sulfur, vanadium, and calcium are high. In order to reduce production costs, manufacturers have increased the proportion of high-sulfur coke raw materials used, which makes the working conditions of carbon calcination furnaces More harsh, the high concentration of sulfur, vanadium, and other impurities in the furnace and the calcium, iron and other mineralizers in the silica bricks form low-melting products, the lining silica bricks are severely erod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66
Inventor 刘勇陈艳吕桂英
Owner REFRACTORY MATERIAL OF SINOSTEEL CORP
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