CN105439579A - High-quality refractory material - Google Patents
High-quality refractory material Download PDFInfo
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- CN105439579A CN105439579A CN201510840751.9A CN201510840751A CN105439579A CN 105439579 A CN105439579 A CN 105439579A CN 201510840751 A CN201510840751 A CN 201510840751A CN 105439579 A CN105439579 A CN 105439579A
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Abstract
The invention discloses a high-quality refractory material. The high-quality refractory material is prepared from the following components: high alumina bauxite, perlite, silicon carbide powder, andalusite powder, quartz sand, rutile, magnesium oxide, calcium oxide and kaolinite. The refractory material adopts a simple preparation method and is low in cost and suitable for large-scale popularization; according to the refractory material, the added alumina bauxite, andalusite and silicon carbide are preprocessed, so that the thermal shock resistance of the refractory material can be improved greatly, and the refractory material has better high-temperature volume stability; by means of a coke thermal reduction nitridation technology performed on the quartz sand, the perlite and the rutile, the prepared refractory material has extremely high breaking strength and erosion resistance; the kaolinite is soaked in alkali and then calcined at a high temperature, accordingly, the structure is improved, and the service life of the refractory material is prolonged.
Description
Technical field
The present invention relates to technical field of refractory materials, particularly relate to a kind of high-quality refractory material.
Background technology
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 69% ~ 60% of ultimate production.Application to refractory is in the every field of the national economy such as iron and steel, non-ferrous metal, glass, cement, pottery, petrochemical industry, machinery, boiler, light industry, electric power, military project, be ensure above-mentioned industry production run and the requisite basic material of technical development, in hot industry production development, play irreplaceable vital role.Existing refractory materials, folding strength is low, and resistance to fouling and heat-shock resistance are not high.
Summary of the invention
The object of this invention is to provide a kind of high-quality refractory material.
The present invention is achieved through the following technical solutions:
A kind of high-quality refractory material, is made up of following composition, alumine 38 parts, quartz sand 50 parts, perlite 20 parts, rutile 6 parts, silicon carbide powder 25 parts, 12 parts, andaluzite powder, 15 parts, magnesium oxide, 13 parts, calcium oxide, 5 parts, kaolinite by weight.
Further, the granularity of described andaluzite powder is 50-60nm, and the granularity of described silicon carbide powder is 120-135nm.
Further, described alumine is through pre-treatment: to be the coal gangue of 15 parts and weight part by alumine and weight part be, and the alumina powder of 1 part is admixed together, first carries out mixed grinding, then puts into 1700 DEG C of temperature lower calcinations 1 hour.
Further, described andaluzite powder and silicon carbide powder mixed weight part are that the ferric oxide of 1.5 parts is through 800 DEG C, calcination processing 2 hours under the High Temperature High Pressure of 20MPa.
Further, described magnesium oxide and calcium oxide through 350 DEG C of high-temperature calcinations after 1 hour, grind into powder.
Further, described kaolinite adopts the soaking with sodium hydroxide of 5% concentration after 30 minutes, puts into 250 DEG C of temperature lower calcinations 30 minutes.
Further, described quartz sand, perlite and rutile are through pre-treatment: by admixed together to quartz sand, perlite and rutile, at 1800 DEG C of temperature, add the coke that weight part is 10 parts, continue to pass into nitrogen, react 4 hours.
The invention has the beneficial effects as follows, compared with prior art:
Refractory materials of the present invention, manufacture craft is simple, and cost is low, is suitable for large-scale promotion; Refractory materials of the present invention, by carrying out pre-treatment to the alumine added, andaluzite, silicon carbide, can greatly improve the heat-shock resistance of refractory materials, make refractory materials at high temperature have better high volume stability; Refractory materials of the present invention, by carrying out coke thermal reduction nitriding process to quartz sand, perlite and rutile, makes the refractory materials made have high folding strength and resistance to fouling; Soak rear high-temperature calcination by carrying out alkali to kaolinite, improve structure, improve the life-span of refractory materials.
Embodiment
A kind of high-quality refractory material, is made up of following composition, alumine 40 parts, perlite 20 parts, silicon carbide powder 30 parts, 15 parts, andaluzite powder, 15 parts, magnesium oxide, 15 parts, calcium oxide, 5 parts, kaolinite by weight.
Further, the granularity of described andaluzite powder is 50-60nm, and the granularity of described silicon carbide powder is 120-135nm.
Further, described alumine is through pre-treatment: to be the coal gangue of 15 parts and weight part by alumine and weight part be, and the alumina powder of 1 part is admixed together, first carries out mixed grinding, then puts into 1700 DEG C of temperature lower calcinations 1 hour.
Further, described andaluzite powder and silicon carbide powder mixed weight part are that the ferric oxide of 1.5 parts is through 800 DEG C, calcination processing 2 hours under the High Temperature High Pressure of 20MPa.
Further, described magnesium oxide and calcium oxide through 350 DEG C of high-temperature calcinations after 1 hour, grind into powder.
Further, described kaolinite adopts the soaking with sodium hydroxide of 5% concentration after 30 minutes, puts into 250 DEG C of temperature lower calcinations 30 minutes.
The performance index of refractory materials of the present invention are:
| Index, unit | Refractory materials of the present invention |
| Volume density g/cm3 | 3.35 |
| Compressive strength MPa | 170-186 |
| Refractoriness under load DEG C | ＞1950 |
| Folding strength MPa | 13-16 |
Table 1
As can be seen from Table 1, capabilities of refractory materials of the present invention is superior, applied widely.
To refractory materials of the present invention and general invention refractory materials at 1100 DEG C, carry out cold cycling, contrast folding strength conservation rate:
| Cold cycling 3 times | Cold cycling 6 times | Cold cycling 9 times | Cold cycling 12 times | |
| Refractory materials of the present invention | 99% | 98.5% | 98% | 97.5% |
| General refractory materials | 98% | 97.1% | 96% | 94.8% |
Table 2
As can be seen from Table 2, refractory materials of the present invention is more superior than the heat-shock resistance of general refractory materials.
Claims (7)
1. a high-quality refractory material, it is characterized in that, be made up of following composition by weight, alumine 38 parts, quartz sand 50 parts, perlite 20 parts, rutile 6 parts, silicon carbide powder 25 parts, 12 parts, andaluzite powder, 15 parts, magnesium oxide, 13 parts, calcium oxide, 5 parts, kaolinite.
2. a kind of high-quality refractory material according to claim 1, is characterized in that, the granularity of described andaluzite powder is 50-60nm, and the granularity of described silicon carbide powder is 120-135nm.
3. a kind of high-quality refractory material according to claim 1, it is characterized in that, described alumine is through pre-treatment: to be the coal gangue of 15 parts and weight part by alumine and weight part be, and the alumina powder of 1 part is admixed together, first carry out mixed grinding, then put into 1700 DEG C of temperature lower calcinations 1 hour.
4. a kind of high-quality refractory material according to claim 1, is characterized in that, described andaluzite powder and silicon carbide powder mixed weight part are that the ferric oxide of 1.5 parts is through 800 DEG C, calcination processing 2 hours under the High Temperature High Pressure of 20MPa.
5. a kind of high-quality refractory material according to claim 1, is characterized in that, described magnesium oxide and calcium oxide through 350 DEG C of high-temperature calcinations after 1 hour, grind into powder.
6. a kind of high-quality refractory material according to claim 1, is characterized in that, described kaolinite adopts the soaking with sodium hydroxide of 5% concentration after 30 minutes, puts into 250 DEG C of temperature lower calcinations 30 minutes.
7. a kind of high-quality refractory material according to claim 1, it is characterized in that, described quartz sand, perlite and rutile are through pre-treatment: by admixed together to quartz sand, perlite and rutile, at 1800 DEG C of temperature, add the coke that weight part is 10 parts, continue to pass into nitrogen, react 4 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510840751.9A CN105439579A (en) | 2015-11-27 | 2015-11-27 | High-quality refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510840751.9A CN105439579A (en) | 2015-11-27 | 2015-11-27 | High-quality refractory material |
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| Publication Number | Publication Date |
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| CN105439579A true CN105439579A (en) | 2016-03-30 |
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| CN201510840751.9A Pending CN105439579A (en) | 2015-11-27 | 2015-11-27 | High-quality refractory material |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010936A (en) * | 1973-06-05 | 1977-03-08 | Aikoh Co., Ltd. | Process for tapping a steel-making converter |
| JPS5585478A (en) * | 1978-12-20 | 1980-06-27 | Kurosaki Refractories Co | Waterrsetting refractory composition |
| CN103319186A (en) * | 2013-05-24 | 2013-09-25 | 霍山县新裕炉窑模具有限公司 | Aluminum melting furnace cast refractory material and preparation method thereof |
| CN104944991A (en) * | 2015-07-07 | 2015-09-30 | 中材高新成都能源技术有限公司 | Novel fire resisting material |
-
2015
- 2015-11-27 CN CN201510840751.9A patent/CN105439579A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4010936A (en) * | 1973-06-05 | 1977-03-08 | Aikoh Co., Ltd. | Process for tapping a steel-making converter |
| JPS5585478A (en) * | 1978-12-20 | 1980-06-27 | Kurosaki Refractories Co | Waterrsetting refractory composition |
| CN103319186A (en) * | 2013-05-24 | 2013-09-25 | 霍山县新裕炉窑模具有限公司 | Aluminum melting furnace cast refractory material and preparation method thereof |
| CN104944991A (en) * | 2015-07-07 | 2015-09-30 | 中材高新成都能源技术有限公司 | Novel fire resisting material |
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Application publication date: 20160330 |