CN104961480A - Quartz anti-cracking refractory material and preparation method thereof - Google Patents

Abstract

The invention discloses a quartz anti-cracking refractory material, which is composed of the following raw materials by weight part: 3-6 of terpene resin, 0.2-0.3 of Sp-80, 10-14 of clay, 13-20 of chromium oxide, 50-70 of fused quartz, 10-13 of zirconium silicate, 2-3 of asphalt, 0.1-0.16 of polyvinyl alcohol, 0.4-1 of lanolin, 10-16 of flax fiber, 2-3 of glacial acetic acid, 26-30 of tetraethyl orthosilicate, 80-102 of 6-10% ammonia water, 100-110 of 3-5% hydrogen peroxide, and 0.4-1 of potassium dihydrogen phosphate. The tetraethyl orthosilicate involved in the invention is hydrolyzed into silanol sol under the condition of adding the catalyst glacial acetic acid, the silanol sol is mixed with a fiber activation solution, and by evaporation of the solvent, a heterocomplex containing carbon and silicon can be obtained, and finally high temperature carbonization is carried out, and the carbon source is provided by the fiber activation solution, thus obtaining a carbon silicon composite additive. The carbon silicon composite additive has the advantages of stable chemical properties, high heat conductivity coefficient, small thermal expansion coefficient, thermal shock resistance, light weight, and high strength.

Description

A kind of quartzy anti-be full of cracks refractory materials and preparation method thereof

Technical field

The present invention relates to a kind of refractory materials, particularly relate to a kind of quartzy anti-be full of cracks refractory materials and preparation method thereof.

Background technology

Refractory materials refers to that refractoriness is not less than a class ceramic of 1580 DEG C.Refractoriness refers to that refractory materials cone-shaped body sample is not having in loading situation, resists high temperature action and does not soften molten centigradetemperature.But only define with refractoriness and can not describe refractory materials, 1580 DEG C is not absolute comprehensively.Now be defined as the material that all physicochemical property allow it to use in high temperature environments and be called refractory materials.Refractory materials is widely used in the industrial circles such as metallurgy, chemical industry, oil, machinofacture, silicate, power, and in metallurgical industry, consumption is maximum, accounts for the 50%-60% of ultimate production.

Carbon composite refractory is raw material by two kinds or two or more refractory oxide of different nature and carbon materials and non-oxidic material, the heterogeneous composite refractory of one that carbonaceous organic material is made as bonding agent.The oxide compound adopted mainly contains MgO, Al2O3, ZrO2 and MgAl2O4, carbon is natural graphite mainly, non-oxidized substance is mainly the metals such as Al, Si, Mg, the alloy of AlSi, AlMg class and SiC, B4C mono-compound of class, then in addition shaping by adding the bonding agent such as resin or pitch, the composite refractory be made up of oxide compound, carbon, non-oxygen compound and bonding agent can be obtained.

Summary of the invention

The object of the invention is just to provide a kind of quartzy anti-be full of cracks refractory materials and preparation method thereof.

The present invention is achieved by the following technical solutions:

A kind of quartzy anti-be full of cracks refractory materials, it is made up of the raw material of following weight parts:

The hydrogen peroxide 100-110 of ammoniacal liquor 80-102,3-5% of terpine resin 3-6, Sp-80 0.2-0.3, clay 10-14, chromic oxide 13-20, fused quartz 50-70, zirconium silicate 10-13, pitch 2-3, polyvinyl alcohol 0.1-0.16, lanolin 0.4-1, flax fiber 10-16, Glacial acetic acid 2-3, tetraethoxy 26-30,6-10%, potassium dihydrogen phosphite 0.4-1.

A preparation method for the anti-be full of cracks refractory materials of quartz, comprises the following steps:

(1) mixed by the hydrogen peroxide of the ammoniacal liquor of above-mentioned 6-10%, 3-5%, stirring, is activation solution;

(2) potassium dihydrogen phosphite is joined in 10-12 times of water, after stirring, add flax fiber, be stirred to water at 80-90 DEG C and do, join in activation solution, ultrasonic 4-10 minute, regulate PH to be neutral, obtain fiber activation liquid;

(3) tetraethoxy is joined in 8-10 dehydrated alcohol doubly, stirring and dissolving, is added drop-wise in fiber activation liquid, after dropwising by lysate, add Glacial acetic acid, insulation reaction 10-12 hour at 40-45 DEG C, washs product with dehydrated alcohol and distilled water successively, filters, vacuum calcining: vacuum tightness is 8-10Pa, temperature rise rate is 80-100 DEG C/min, is incubated roasting 10-12 h after being warmed up to 1200-1300 DEG C, obtains carbon silicon composite assistant;

(4) get Sp-80, join in 16-20 times of sodium hydroxide solution, this concentration of sodium hydroxide solution is 16-20%, stirs, and obtains emulsified alkali;

(5) mixed with lanolin by pitch, stir 2-3 minute at 80-90 DEG C, join in above-mentioned emulsified alkali, add polyvinyl alcohol, stir, add terpine resin, 100-200 rev/min is stirred 20-30 minute, is cooled to normal temperature, obtains resin glue;

(6) by clay, chromic oxide, fused quartz mixing, mixed rolling 20-30 minute, adds resin glue, mixed rolling 6-10 minute, add each raw material of residue, adjustment temperature is 80-90 DEG C, mixed rolling 16-20 minute, hot-forming, burn till under 1200-1400 DEG C of condition under buried charcoal atmosphere.

Compared with prior art, advantage of the present invention is:

Tetraethoxy of the present invention is silanol colloidal sol in the Water Under solution that catalyzer Glacial acetic acid adds, by silanol colloidal sol, the mixing of fiber activation liquid, pass through evaporating solvent, obtain the heterocomplex of carbon, silicon, eventually pass high temperature cabonization, fiber activation liquid provides carbon source, obtains carbon silicon composite assistant, and the stable chemical performance of this carbon silicon composite assistant, thermal conductivity is high, thermal expansivity is little, resistance to thermal shock, lightweight, intensity is high;

The zirconium silicate etc. that refractory materials of the present invention adds effectively can improve resistance to cracking, and refractory materials good stability of the dimension of the present invention, high thermal resistance is strong.

Embodiment

Below in conjunction with embodiment, the present invention is described in further detail:

Embodiment:

A kind of quartzy anti-be full of cracks refractory materials, it is made up of the raw material of following weight parts:

Hydrogen peroxide 110, the potassium dihydrogen phosphite 0.4 of the ammoniacal liquor 102,5% of terpine resin 3, Sp-80 0.3, clay 14, chromic oxide 20, fused quartz 70, zirconium silicate 13, pitch 2, polyvinyl alcohol 0.16, lanolin 0.4, flax fiber 16, Glacial acetic acid 2, tetraethoxy 30,10%.

A preparation method for the anti-be full of cracks refractory materials of quartz, comprises the following steps:

(1) by the ammoniacal liquor of above-mentioned 10%, 3% hydrogen peroxide mixing, stirring, is activation solution;

(2) potassium dihydrogen phosphite is joined in 10 times of water, after stirring, add flax fiber, be stirred to water at 90 DEG C and do, join in activation solution, ultrasonic 4 minutes, regulate PH to be neutral, obtain fiber activation liquid;

(3) tetraethoxy is joined in the dehydrated alcohol of 10 times, stirring and dissolving, is added drop-wise in fiber activation liquid, after dropwising by lysate, add Glacial acetic acid, insulation reaction 12 hours at 40-45 DEG C, washs product with dehydrated alcohol and distilled water successively, filters, vacuum calcining: vacuum tightness is 10Pa, temperature rise rate is 100 DEG C/min, is incubated roasting 12 h after being warmed up to 1300 DEG C, obtains carbon silicon composite assistant;

(4) get Sp-80, join in 20 times of sodium hydroxide solutions, this concentration of sodium hydroxide solution is 20%, stirs, and obtains emulsified alkali;

(5) mixed with lanolin by pitch, stir 2 minutes, join in above-mentioned emulsified alkali, add polyvinyl alcohol, stir, add terpine resin at 90 DEG C, 200 revs/min are stirred 30 minutes, are cooled to normal temperature, obtain resin glue;

(6) by clay, chromic oxide, fused quartz mixing, mixed rolling 30 minutes, adds resin glue, and mixed rolling 6 minutes adds each raw material of residue, and adjustment temperature is 90 DEG C, and mixed rolling 20 minutes is hot-forming, burns till under buried charcoal atmosphere under 1400 DEG C of conditions.

Performance test:

Refractory materials of the present invention is pressed GB/T13244 and detect oxidation-resistance (1000 DEG C × 3h), practical decarburized depth is 4.8mm; Detecting the heat-shock resistance of 1100 DEG C of water-cooleds by YB/T376.1, there is not crackle in the test that sample can stand 8 times; High temperature break resistant intensity is 7.8MPa.

Claims (2)

1. the anti-be full of cracks refractory materials of quartz, is characterized in that what it was made up of the raw material of following weight parts:

The hydrogen peroxide 100-110 of ammoniacal liquor 80-102,3-5% of terpine resin 3-6, Sp-80 0.2-0.3, clay 10-14, chromic oxide 13-20, fused quartz 50-70, zirconium silicate 10-13, pitch 2-3, polyvinyl alcohol 0.1-0.16, lanolin 0.4-1, flax fiber 10-16, Glacial acetic acid 2-3, tetraethoxy 26-30,6-10%, potassium dihydrogen phosphite 0.4-1.

2. a preparation method for quartzy anti-be full of cracks refractory materials as claimed in claim 1, is characterized in that comprising the following steps:

(1) mixed by the hydrogen peroxide of the ammoniacal liquor of above-mentioned 6-10%, 3-5%, stirring, is activation solution;

(2) potassium dihydrogen phosphite is joined in 10-12 times of water, after stirring, add flax fiber, be stirred to water at 80-90 DEG C and do, join in activation solution, ultrasonic 4-10 minute, regulate PH to be neutral, obtain fiber activation liquid;

(3) tetraethoxy is joined in 8-10 dehydrated alcohol doubly, stirring and dissolving, is added drop-wise in fiber activation liquid, after dropwising by lysate, add Glacial acetic acid, insulation reaction 10-12 hour at 40-45 DEG C, washs product with dehydrated alcohol and distilled water successively, filters, vacuum calcining: vacuum tightness is 8-10Pa, temperature rise rate is 80-100 DEG C/min, is incubated roasting 10-12 h after being warmed up to 1200-1300 DEG C, obtains carbon silicon composite assistant;

(4) get Sp-80, join in 16-20 times of sodium hydroxide solution, this concentration of sodium hydroxide solution is 16-20%, stirs, and obtains emulsified alkali;

(5) mixed with lanolin by pitch, stir 2-3 minute at 80-90 DEG C, join in above-mentioned emulsified alkali, add polyvinyl alcohol, stir, add terpine resin, 100-200 rev/min is stirred 20-30 minute, is cooled to normal temperature, obtains resin glue;

(6) by clay, chromic oxide, fused quartz mixing, mixed rolling 20-30 minute, adds resin glue, mixed rolling 6-10 minute, add each raw material of residue, adjustment temperature is 80-90 DEG C, mixed rolling 16-20 minute, hot-forming, burn till under 1200-1400 DEG C of condition under buried charcoal atmosphere.