CN104944926A - Silicon carbide refractory material - Google Patents
Silicon carbide refractory material Download PDFInfo
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- CN104944926A CN104944926A CN201510251854.1A CN201510251854A CN104944926A CN 104944926 A CN104944926 A CN 104944926A CN 201510251854 A CN201510251854 A CN 201510251854A CN 104944926 A CN104944926 A CN 104944926A
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Abstract
The invention relates to a refractory material, particularly a silicon carbide refractory material. The silicon carbide refractory material is characterized by comprising the following components in parts by weight: 45-52 parts of magnesium oxide and calcium oxide raw materials, 8-15 parts of silicon carbide, 12-14 parts of quartz sand, 0.2-6 parts of magnesium-zirconium alloy, 3-8 parts of magnesium aluminum silicate and 2-5 parts of binder for carbonous refractory materials. The silicon carbide refractory material provided by the invention compromises oxidation resistance, high temperature resistance, molten slag permeation resistance, thermal shock resistance and productivity.
Description
Technical field
The present invention relates to a kind of refractory materials formula, particularly a kind of carborundum refractory.
Background technology
Silicon carbide be by American Acheson when electric smelting diamond in 1891 is tested, a kind of carbide serendipitous in laboratory, thought it is adamantine mixture at that time by mistake, therefore be named silicon carbide, within 1893, Acheson has found out the method for industrial silicon carbide smelting, and namely the acheson furnace said of the large daily life of a family, uses till today always, take carbonaceous material as the resistance furnace of furnace core body, the mixture Formed SiClx of electrified regulation quartz SIO2 and carbon.
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 50% ~ 60% of ultimate production.Application to refractory in iron and steel, non-ferrous metal, glass, cement, pottery, petrochemical industry, machinery, boiler, light industry, electric power,
The every field of the national economy such as military project, is ensure above-mentioned industry production run and the requisite basic material of technical development, in hot industry production development, plays irreplaceable vital role.In the art, also little for the refractory materials under sour environment, the refractory materials under existing acidity substantially work-ing life not long.
Summary of the invention
The invention provides a kind of carborundum refractory, this material has good fire performance.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of carborundum refractory, is characterized in that the formula rate of described carborundum refractory comprises following component by weight:
Magnesium oxide, calcium oxide raw material 45 ~ 52 parts,
8 ~ 15 parts, silicon carbide,
Quartz sand 12 ~ 14 parts,
Mg-Zr alloys 0.2 ~ 6 part,
Neusilin 3 ~ 8 parts,
Binding agent for carbonic refractory material 2 ~ 5 parts.
As preferably, the granularity of described Mg-Zr alloys is less than or equal to 0.2mm; In Mg-Zr alloys, zirconium content is 3% ~ 35%, and all the other are magnesium and impurity; Mg-Zr alloys is powdery;
Described magnesium oxide, calcium oxide raw material are one or both in calcium magnesia sand or dolomite sand, or the mixture of one or both and magnesia in calcium magnesia sand or dolomite sand; Described magnesium oxide, calcium oxide raw material are divided into particle and fine powder;
Described binding agent for carbonic refractory material is one or more in the mixture of pitch liquation, tar liquid, novolac resin liquid and urotropine.
As preferably, content >=5% of CaO in described carborundum refractory.
The invention has the beneficial effects as follows: the carborundum refractory adopting the technology of the present invention to prepare, taken into account oxidation-resistance, high thermal resistance, slag-resistant perviousness, heat-shock resistance and produceability.
Embodiment
Below by specific embodiment, technical scheme of the present invention is described in further detail.Should be appreciated that enforcement of the present invention is not limited to the following examples, any pro forma accommodation make the present invention and/or change all will fall into scope.
In the present invention, if not refer in particular to, all parts, per-cent are weight unit, and the equipment adopted and raw material etc. all can be buied from market or this area is conventional.Method in following embodiment, if no special instructions, is the ordinary method of this area.
Embodiment:
A kind of carborundum refractory, formula rate comprises following component by weight: magnesium oxide, calcium oxide raw material (dolomite sand) 48 parts, 10 parts, silicon carbide, quartz sand 12 parts, Mg-Zr alloys 3 parts, neusilin 6 parts, binding agent for carbonic refractory material 3 parts.Wherein in Mg-Zr alloys powder, zirconium content is 16%, and granularity is less than 0.25mm.
The preparation method of described carborundum refractory, step is as follows:
(1) preparation of pre-mixing fine powder: the dolomite sand fine powder of granularity≤0.2mm and Mg-Zr alloys powder are added in mixing machine and mixes 20min, obtain pre-mixing fine powder;
(2) preparation of pug: dolomite sand particle, quartz sand, neusilin and binding agent for carbonic refractory material are added in mixing machine and mixes, then add silicon carbide continuation mixing 25 minutes; Add step (1) gained pre-mixing fine powder again, mix and obtain pug after 15 minutes;
(3) shaping: step (2) gained pug to be weighed, adds in mould and use pressing machine extrusion forming, obtain adobe; Adobe toasted, top temperature is 250 DEG C, toasts 10 hours;
(4) pack: by waterproof packing after step (3) gained adobe cooling, obtain product.
This product sample detects the oxidation-resistance of 1000 DEG C × 3h by GB/T13244, and Decarburized layer mean thickness is 2.5mm.This product sample detects the heat-shock resistance of 1100 DEG C-water-cooled by YB/T376.1.The test follower head that sample stands 18 times breaks.This product is used for stopper rod of tundish, and the life-span can reach 27.5 hours.
Above-described embodiment is one of the present invention preferably scheme, not does any pro forma restriction to the present invention, also has other variant and remodeling under the prerequisite not exceeding the technical scheme described in claim.
Claims (3)
1. a carborundum refractory, is characterized in that the formula rate of described carborundum refractory comprises following component by weight:
Magnesium oxide, calcium oxide raw material 45 ~ 52 parts,
8 ~ 15 parts, silicon carbide,
Quartz sand 12 ~ 14 parts,
Mg-Zr alloys 0.2 ~ 6 part,
Neusilin 3 ~ 8 parts,
Binding agent for carbonic refractory material 2 ~ 5 parts.
2. carborundum refractory according to claim 1, is characterized in that: the granularity of described Mg-Zr alloys is less than or equal to 0.2mm; In Mg-Zr alloys, zirconium content is 3% ~ 35%, and all the other are magnesium and impurity; Mg-Zr alloys is powdery;
Described magnesium oxide, calcium oxide raw material are one or both in calcium magnesia sand or dolomite sand, or the mixture of one or both and magnesia in calcium magnesia sand or dolomite sand; Described magnesium oxide, calcium oxide raw material are divided into particle and fine powder;
Described binding agent for carbonic refractory material is one or more in the mixture of pitch liquation, tar liquid, novolac resin liquid and urotropine.
3. carborundum refractory according to claim 1, is characterized in that: content >=5% of CaO in described carborundum refractory.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251854.1A CN104944926A (en) | 2015-05-18 | 2015-05-18 | Silicon carbide refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510251854.1A CN104944926A (en) | 2015-05-18 | 2015-05-18 | Silicon carbide refractory material |
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| CN104944926A true CN104944926A (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510251854.1A Pending CN104944926A (en) | 2015-05-18 | 2015-05-18 | Silicon carbide refractory material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105523770A (en) * | 2016-01-20 | 2016-04-27 | 广西丛欣实业有限公司 | Refractory material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950313A (en) * | 2004-03-05 | 2007-04-18 | 里弗雷克特里知识产权两合公司 | Ceramic batch and associated product for fireproof applications |
| CN102838361A (en) * | 2012-09-12 | 2012-12-26 | 首钢总公司 | MgCa-SiC-C fireproof material and preparation method thereof |
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
| CN104058758A (en) * | 2014-06-26 | 2014-09-24 | 中材高新成都能源技术有限公司 | Fireproof quartz material |
-
2015
- 2015-05-18 CN CN201510251854.1A patent/CN104944926A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1950313A (en) * | 2004-03-05 | 2007-04-18 | 里弗雷克特里知识产权两合公司 | Ceramic batch and associated product for fireproof applications |
| CN102838361A (en) * | 2012-09-12 | 2012-12-26 | 首钢总公司 | MgCa-SiC-C fireproof material and preparation method thereof |
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
| CN104058758A (en) * | 2014-06-26 | 2014-09-24 | 中材高新成都能源技术有限公司 | Fireproof quartz material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105523770A (en) * | 2016-01-20 | 2016-04-27 | 广西丛欣实业有限公司 | Refractory material |
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Application publication date: 20150930 |