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Corundum silicon carbide steel fiber castable

A corundum silicon carbide steel and castable technology, applied in the field of castables, can solve the problems of large thermal stress, high cost, large temperature difference, etc., and achieve the effects of good volume stability, low cost, and good construction performance.

Active Publication Date: 2021-07-13
宜兴市泰科耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The taphole of the blast furnace is the most severely eroded and corroded place by molten iron. The intermittent tapping forms a large temperature difference. The material is prone to cracking due to large thermal stress and multiple shock resistance cycles, and the commonly used water reducing agent is polycarboxylic acid. , the cost is too high, so the design of corundum silicon carbide steel fiber castable

Method used

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  • Corundum silicon carbide steel fiber castable
  • Corundum silicon carbide steel fiber castable
  • Corundum silicon carbide steel fiber castable

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see Figure 1-3 As shown, the corundum silicon carbide steel fiber castable is prepared from the following raw materials in parts by weight: 30 parts of dense corundum, 20 parts of white corundum, 10 parts of silicon carbide, 1 part of silicon oxide micropowder, 5 parts of alumina micropowder, 1 Part of modified silica sol, 0.5 part of composite additive, 1 part of chromium oxide, 1 part of magnesium oxide, 3 parts of cement;

[0036] The castable is prepared through the following steps:

[0037]Step 1. Preparation of modified silica sol: Pour 200mL of silica sol into a 500mL three-neck flask, add ethanol and water into the mixture, the volume ratio of ethanol and water is 1:1, then ultrasonically disperse for 1 hour, and then The three-neck flask was placed in a constant temperature water bath at a temperature of 50°C. Insert an electric stirring rod, a thermometer, and a spherical condenser to raise the temperature to 90°C, add 5.18g of KH-550, and stir and react at ...

Embodiment 2

[0047] see Figure 1-3 As shown, the corundum silicon carbide steel fiber castable is prepared from the following raw materials in parts by weight: 40 parts of dense corundum, 20 parts of white corundum, 15 parts of silicon carbide, 1 part of silicon oxide micropowder, 10 parts of alumina micropowder, 5 parts Part modified silica sol, 0.5 part composite additive, 3 parts chromium oxide, 1 part magnesium oxide, 8 parts cement;

[0048] The castable is prepared through the following steps: the same as in Example 1.

Embodiment 3

[0050] see Figure 1-3 As shown, the corundum silicon carbide steel fiber castable is prepared from the following raw materials in parts by weight: 40 parts of dense corundum, 35 parts of white corundum, 15 parts of silicon carbide, 3 parts of silicon oxide micropowder, 10 parts of alumina micropowder, 5 parts 1 part of modified silica sol, 1 part of composite additive, 2 parts of chromium oxide, 2 parts of magnesia, 5 parts of cement;

[0051] The castable is prepared through the following steps: the same as in Example 1.

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Abstract

The invention discloses a corundum silicon carbide steel fiber castable, which is prepared from the following raw materials in parts by weight: 30-40 parts of dense corundum, 20-35 parts of white corundum, 10-15 parts of silicon carbide, and 1-3 parts of silicon oxide Micropowder, 5-10 parts of alumina micropowder, 1-5 parts of modified silica sol, 0.5-3 parts of composite additives, 1-3 parts of chromium oxide, 1-3 parts of magnesium oxide, 3-8 parts of cement; the invention, through Modified silica sol is added to the raw materials, so that the modified silica sol combined with corundum-carbonized castables not only has good construction performance, but also has rapid curing and baking properties; compared with traditional cement-bonded materials, It can effectively avoid bursting during maintenance and rapid baking, shorten the construction period and baking period, and has good volume stability, thermal strength, shock resistance and corrosion resistance.

Description

technical field [0001] The invention relates to the technical field of castables, in particular to corundum silicon carbide steel fiber castables. Background technique [0002] Castable is a kind of granular or powdery mixture made by adding a certain amount of binding agent to refractory materials. Compared with qualitative refractory products, unshaped refractory materials represented by refractory castables have a short process flow, Due to the advantages of low production energy consumption and cost, convenient use, wide application range, integrity and good use effect, it has developed rapidly in the world, and its proportion in the entire refractory material is getting higher and higher. In some countries with advanced refractory technology, the output of unshaped refractories has approached or even exceeded the output of shaped products. For example, the current output of unshaped refractory materials in Japan accounts for about 60% of the total refractory materials;...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/66
CPCC04B35/66C04B2235/9607C04B2235/9669
Inventor 刘财军顾丽英朱华君王国平吴奇忠
Owner 宜兴市泰科耐火材料有限公司
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