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High-strength quick-solidifying refractory adhesive

A refractory adhesive and adhesive technology, applied in the direction of adhesives, inorganic adhesives, etc., can solve the problems of poor cohesion, poor quick-setting, and difficulty in gunning, and achieve a smooth, smooth and good surface. Volume stability and thermal stability, the effect of fast setting time

Inactive Publication Date: 2003-02-26
蒋德奎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the adhesive can be operated at high temperature, there are still deficiencies. One is that the adhesive is used as a solvent, and it is easy to fall off during use, and the cohesiveness is not good. The above is difficult to spray; the second is that the formula contains phosphoric acid, which makes the binder acidic. It is only suitable for kilns built with acidic materials. Due to the neutralization of acid and alkali, it is not suitable for alkaline kilns like coke ovens. material masonry kiln

Method used

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  • High-strength quick-solidifying refractory adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In Example 1, 50 parts of high alumina powder (Al 2 O 3 ≥70%, Fe 2 O 3 ≤2%), 5 parts of Guangxi mud (Al 2 O 3 ≥35%, Fe 2 O 3 ≤0.9%), 5 parts of superfine powder (particle size2 O 3 ≥80%, Fe 2 O 3 ≤1.5%), put 1 part of sodium hexametaphosphate into a mixer and mix well, then add 39 parts of water glass and mix evenly. The resulting adhesive is thicker and can be used for coke oven refractory repair.

Embodiment 2

[0020] In Example 2, 35 parts of high aluminum powder (Al 2 O 3 ≥70%, Fe 2 O 3 ≤2%), 10 parts of Guangxi mud (Al 2 O 3 ≥35%, Fe 2 O 3 ≤0.9%), 5 parts of superfine powder (particle size2 O 3 ≥80%, Fe 2 O 3 ≤1.5%), 1 part of sodium hexametaphosphate, 1 part of sodium tripolyphosphate, 3 parts of silicon powder into the mixer and mix well, then add 45 parts of water glass, stir evenly, the resulting binder is relatively thin and can be used for coke Spraying of refractory parts of the furnace.

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Abstract

A refractory adhesive for repairing the liner of blast furnace or spraying it on the liner contains high-aluminium powder (30-75 portions), Guangxi clay (5-15), superfine powder (2-10), sodium hexametaphosphate (1-1.5) and water glass (15-50). Its advantages include high refractory temp up to 1800 deg.C, high adhesion, high compression strength, not shrinking and cracking at high temp, high resistance to wear and chemical corrosion, and quick solidification.

Description

Technical field [0001] The invention relates to a high-temperature binder of inorganic components, which is suitable for repairing and spraying coke oven refractories. technical background [0002] Refractory mud is an indispensable joint material for refractory anvil masonry. In the coke oven, it is the same as refractory masonry. It not only has to withstand the erosion and erosion of gas, molten iron, molten steel and slag, but also has to adapt to rapid changes in temperature. This requires the refractory mud to have similar technical properties to the refractory anvil masonry, and can bond the refractory anvil into a whole, so that the masonry has excellent abrasion resistance, compression resistance, and corrosion resistance, and ensures the normal operation of the coke oven . In the past, the general refractory mortar was composed of fine powder of refractory clinker and refractory raw clay. Although the price was low, the various properties of refractory mortar were not i...

Claims

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Application Information

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IPC IPC(8): C09J1/00
Inventor 蒋德奎
Owner 蒋德奎
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