An anti-corrosion refractory castable

A refractory castable and erosion-resistant technology, applied in the field of refractory castables, can solve problems such as hidden dangers of high temperature chemical kiln safety, increase production cost, reduce production efficiency, etc., achieve excellent corrosion resistance and penetration resistance, and reduce maintenance costs. , the effect of improving utilization

Active Publication Date: 2022-05-24
郑州金世耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When using castables in high-temperature kilns with complex slag bodies such as chemical synthesis, especially in chemical kilns with heavy treatment such as sodium (Na) high-sulfur salts or alkalis, conventional castables will be at room temperature After a certain period of use, it is eroded by chemical substances, and it is more likely to be eroded and melted in a high-temperature kiln, thus causing a great safety hazard to the high-temperature chemical kiln; in order to eliminate the safety hazard, it is necessary to Overhaul and maintenance of high-temperature chemical kilns have been carried out many times, which greatly increases production costs and reduces production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In one embodiment of the present invention, an erosion-resistant refractory castable, specifically select the following weight of the raw material: magnesium iron spinel sand 260 parts, magnesium chromium spinel powder 50 parts; while also adding particle size not more than 3 micron silicon micron powder 10 parts, and explosion-proof fiber 0.25 parts, Portland cement 20 parts, composite water reducer 0.5 parts, the aforementioned composite water reducer is sodium tripolyphosphate 0.5 parts;

[0022] In the present embodiment, the erosion-resistant fire-resistant casting material of the present invention is prepared according to the following steps:

[0023] a. The composite superplasticizer (sodium tripolyphosphate), explosion-proof fiber, silicon powder, magnesium iron spinel sand, magnesium chromium spinel powder are measured and weighed according to the demand, and then put into the mixing equipment for dry material mixing; the mixing time only needs to reach the visual ...

Embodiment 2

[0027] In another embodiment of the present invention, an erosion-resistant refractory castable, specifically select the following weight of the raw material: magnesium iron spinel sand 260 parts, the foregoing magnesium iron spinel sand has different particle sizes, wherein the particle size is 5-8mm50 parts, particle size 3-5mm150 parts, particle size 1-3mm50 parts, particle size 0-1mm10 parts; magnesium chromium spinel powder 50 parts, the particle size of the aforementioned magnesium chromium spinel powder is not less than 180 mesh; also added particle size is not more than 3 micron silicon powder 10 parts, The silica content of the aforementioned silicon powder is not less than 92%; and explosion-proof fiber 0.25 parts, the above-mentioned explosion-proof fiber using fusible chemical fibers, Portland cement 20 parts, the particle size of the aforementioned Portland cement is not less than 325 mesh, and the content of the aforementioned Portland cement aluminum trioxide is not...

Embodiment 3

[0034] In another embodiment of the present invention, an erosion-resistant refractory casting material, specifically selected the following weight of the raw material: magnesium iron spinel sand 1050 parts, the aforementioned magnesium iron spinel sand has different particle sizes, wherein respectively: particle size 5-8mm250 parts, particle size 3-5mm350 parts, particle size 1-3mm250 parts, particle size 0-1mm200 parts; magnesium chromium spinel powder 300 parts, the aforementioned magnesium chromium spinel powder particle size is not less than 180 mesh At the same time, the particle size is not more than 3 micron silicon powder 100 parts, the silica content of the aforementioned silicon powder is not less than 92%; and 2 parts of explosion-proof fiber, the above-mentioned explosion-proof fiber is made of fusible chemical fibers, Portland cement 130 parts, the particle size of the portland cement is not less than 325 mesh, and the content of the above-mentioned Portland cement a...

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Abstract

The invention discloses an anti-corrosion refractory castable, and in particular relates to the technical field of safe production of hazardous chemicals. The invention includes 310-1350 parts of magnesia spinel filler, 10.25-102 parts of functional filler, 20-130 parts of cement matrix, and 0.5-5 parts of functional additive; effectively utilizes the high-temperature chemical stability of materials and newly formed minerals at working temperatures High refractoriness and high temperature liquid phase viscosity to improve the corrosion resistance of low viscosity sodium (Na) and high sulfur alkali (or salt) solutions, so as to realize the long life of high temperature chemical kilns.

Description

Technical field [0001] The present invention discloses a refractory castable, specifically, is a high-performance resistant to sodium containing (Na) high sulfur alkali (or salt) solution erosion of a new refractory casting material. Background [0002] Castables, also known as refractory casting materials, are granular and powdery materials made of refractory materials with a certain amount of binder, with high fluidity, and amorphous refractory materials formed by pouring. [0003] When the castable material is applied to the high-temperature kiln with complex slag bodies such as chemical synthesis, especially in the chemical kiln containing sodium (Na) high sulfur salt or alkali and other heavy treatment, the conventional castable material will be eroded by chemical substances after a certain period of time at room temperature, and it is easier to be eroded and melted down in the high-temperature kiln, thus causing great safety hazards to the high-temperature chemical kiln; in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
Inventor 刘世杰刘志远郑磊
Owner 郑州金世耐火材料有限公司
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