Refractory composition for pure hydrogen atmosphere high temperature furnace

A high-temperature furnace and composition technology, applied in the field of refractory materials, can solve the problems of limited use field, poor chemical stability, etc., and achieve the effects of strong practical value and significance, large thermal conductivity, and low thermal expansion coefficient.

Inactive Publication Date: 2012-10-10
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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Problems solved by technology

[0004] However, due to the multi-component mineral composition of the mate

Method used

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Examples

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Embodiment

[0018] components Example 1 Example 2 Example 3 Example 4 Silica fume 10 17 22 30 Micropowder grade high titanium slag 0.05 2 4.5 1.0 Aluminum powder 0.05 0.5 1 toner 1.5 1.5 La 2 o 3 2 0.5 1 Y 2 o 3 1.0 2 Silicon Nitride Bonded Silicon Carbide 61 50 30 25 Fused green silicon carbide 8.9 20 25 Sintered Silicon Nitride 15 3.5 30 14 Sodium silicate 0.5 0.5 Aluminum oxide 0.5 1 2 sodium sulfate 1 0.25 sodium bisulfate 2 2 Aluminum phosphate 1 2 petroleum coke 1 2 0.25 Phenolic Resin 1 1 2

[0019] According to the above formula, the refractory bricks made by batching, kneading, machine pressing, baking, and nitriding sintering were tested under the ambient atmosphere conditions of the silicon steel high-temperature ring furnace, that is, the temperature in the furnace is 1300 °C, th

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Abstract

The invention relates to a high temperature heat treatment furnace, especially relates to a refractory composition for a pure hydrogen atmosphere high temperature furnace. The refractory composition is prepared by letting raw materials be subject to mixing, high-pressure forming and high temperature nitridation sintering, wherein the raw materials comprise 10-30 % of silicon powder, 0.1-5 % of medium-low temperature sintering agent, 1-10 % of binder, and the balance of refractory aggregate. The Si3N4-conjugated silicon carbide refractory material provided by the invention can be used in pure hydrogen atmosphere at the ambient temperature of higher than 1300 DEG C.

Description

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Claims

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Application Information

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Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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