CN102936143B - Composite thermal-shock-resisting high-aluminum refractory brick and preparation method thereof - Google Patents
Composite thermal-shock-resisting high-aluminum refractory brick and preparation method thereof Download PDFInfo
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- CN102936143B CN102936143B CN201210520207.2A CN201210520207A CN102936143B CN 102936143 B CN102936143 B CN 102936143B CN 201210520207 A CN201210520207 A CN 201210520207A CN 102936143 B CN102936143 B CN 102936143B
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Abstract
The invention relates to a composite thermal-shock-resisting high-aluminum refractory brick for steel smelting blast furnace hot blast stoves and a preparation method of the brick. The refractory brick is prepared by mixing and evenly grinding homogeneous material, sillimanite, andalusite, alpha-aluminum oxide, zirconium oxide, soft clay powder and water, forming via a machine and firing at a temperature of 1475-1500 DEG C. According to the composite thermal-shock-resisting high-aluminum refractory brick and the preparation method, the formula is reasonable, the cost is relatively low, the preparation method is simple, the operation is easy, the thermal shock resistance of the fired refractory brick is greatly enhanced, the service life of the hot blast stoves is prolonged and the economic benefit of the enterprises is improved.
Description
Technical field
The present invention relates to compound highly heatproof and shockproof refractory brick of a kind of iron and steel smelting blast funnace hot blast stove use and preparation method thereof.
Background technology
Along with the maximization of iron and steel smelting blast furnace and the development of the long-lived technology of hotblast stove, people are also more and more higher for the specification of quality of hotblast stove furnace lining material.Because the working conditions at the positions such as hot-blast stove gas burner pipeline, hot-blast outlet is severe, cold and heat succeed each other frequent, i.e. thermal shock phenomenon, causes the refractory materials at above-mentioned position to be more prone to be damaged, and causes lifetime of hot-air stove greatly to reduce.The anti-thermal shock brick that China refractory materials enterprise produces at present, as andalusite brick, cordierite-mullite brick, anti-peeling high aluminium brick etc., due to the problem of its refractory brick proportioning raw materials, it is not very desirable causing anti-thermal shock effect.The number of times of the current cold experiment of heat shock resistant refractory brick water resistant is generally below 80 times, and thermal shock resistance is poor, in use easily occurs falling brick, cracked phenomenon, and work-ing life is short, to enterprise, causes great financial loss.And Mineral resources is day by day exhausted at present, causes starting material deficient, the price of refractory brick is higher, and the cost burden of enterprise is overweight.
Summary of the invention
The object of this invention is to provide a kind of compound anti-thermal shock alumina firebrick and preparation method thereof.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A compound anti-thermal shock alumina firebrick, is made by base-material and stability bonding agent, and the addition of stability bonding agent is the 2%-15% of base-material gross weight; The parts by weight of raw materials of described base-material is: homogenization material 20-60 part, sillimanite 10-25 part, andaluzite 15-45 part, Alpha-alumina 10-25 part, zirconium white 5-15 part, soft clay powder 10-35 part; The raw material weight per-cent of described stability bonding agent is: zirconium white 15%-45%, Alpha-alumina 3%-15%, soft clay powder 10%-20%, surplus is water.
Formula rationally, cost is comparatively cheap, after above-mentioned raw materials mixes according to proportioning, even through edge runner-wet mill mixed grind, high-pressure molding, high temperature burns till and forms thick xln, and the number of times of the cold experiment of water resistant can reach more than 100 times, in metallurgy industry use procedure, greatly reduce fracture, fallen the phenomenon of brick, long service life.For economic benefit has improved in enterprise.
Preferably, described refractory brick, the addition of its stability bonding agent is the 5-10% of base-material gross weight; The parts by weight of raw materials of described base-material is: homogenization material 30-40 part, sillimanite 15-20 part, andaluzite 30-35 part, Alpha-alumina 15-20 part, zirconium white 7-10 part, soft clay powder 15-25 part; The raw material weight per-cent of described stability bonding agent is: zirconium white 25-35%, Alpha-alumina micro mist 5-10%, soft clay powder 13-17%, surplus is water.
Preferably, described refractory brick, the addition of its stability bonding agent is 8% of base-material gross weight; The parts by weight of raw materials of described base-material is: 35 parts of homogenization materials, 18 parts of sillimanites, 32 parts of andaluzites, 18 parts of Alpha-aluminas, 8 parts of zirconium whites, 20 parts, soft clay powder; The raw material weight per-cent of described stability bonding agent is: zirconium white 15%, Alpha-alumina 20%, soft clay powder 35%, surplus is water.
Preferably, in described stability bonding agent: zirconium white is that 325 orders, Alpha-alumina are that 325 orders, soft clay powder are 250 orders.
The preparation method of described a kind of compound anti-thermal shock alumina firebrick, the steps include: by described base-material and stability bonding agent according to proportioning mixed grind evenly after, machine-processed moulding is fired at the temperature of 1475 ℃-1500 ℃.
Preferably, the preparation method of described refractory brick, during machine-processed moulding, adopts high tonnage hydraulic press or the compression moulding of high-pressure molding device.These two kinds of type efficiency are high, and pressing result is better.
Preferably, described firing temperature is 1485 ℃.Sintered refractory block at this temperature, better effects if, has also avoided the waste of heat energy.
Rationally, cost is comparatively cheap for formula, after raw material is mixed according to proportioning, even through edge runner-wet mill mixed grind, high-pressure molding, and high temperature burns till and forms thick xln, and the number of times of the cold experiment of water resistant can reach more than 100 times, and thermal shock resistance promotes greatly.Greatly reduced in the use procedure of metallurgy steel-making industry, occurred refractory brick because of lower former of thermal shock resistance thereby occur fracture, fall the phenomenon of brick, extended the work-ing life of hotblast stove, for economic benefit has improved in enterprise.
Compared with prior art, tool has the following advantages in the present invention: rationally, cost is comparatively cheap for formula, and preparation method is simple to operation, and the refractory brick thermal shock resistance burning out promotes greatly, has extended the work-ing life of hotblast stove, for economic benefit has improved in enterprise.
Embodiment
Embodiment 1
Get respectively 20 parts of homogenization materials, 10 parts of sillimanites, 15 parts of andaluzites, 10 parts of Alpha-aluminas, 5 parts of zirconium whites, 10 parts, soft clay powder; The addition of stability bonding agent is 2% of base-material gross weight; The raw material weight per-cent of stability bonding agent is: 325 object zirconium whites 15%, 325 object Alpha-aluminas 3%, 250 object soft clay powder 10%, surplus is water.Above-mentioned raw materials is mixed and through edge runner-wet mill mixed grind evenly after, use the compression moulding of high-pressure molding device, and be placed in the high temperature sintering furnace of 1475 ℃ and fire.
Embodiment 2
Get respectively 60 parts of homogenization materials, 25 parts of sillimanites, 45 parts of andaluzites, 25 parts of Alpha-aluminas, 15 parts of zirconium whites, 35 parts, soft clay powder; The addition of stability bonding agent is 15% of base-material gross weight; The raw material weight per-cent of stability bonding agent is: 325 object zirconium whites 45%, 325 object Alpha-aluminas 15%, 250 object soft clay powder 20%, surplus is water.Above-mentioned raw materials is mixed and through edge runner-wet mill mixed grind evenly after, use the compression moulding of high tonnage hydraulic press, and be placed in the high temperature sintering furnace of 1500 ℃ and fire.
Embodiment 3
Get respectively 30 parts of homogenization materials, 15 parts of sillimanites, 30 parts of andaluzites, 15 parts of Alpha-aluminas, 7 parts of zirconium whites, 15 parts, soft clay powder; The addition of stability bonding agent is 5% of base-material gross weight; The raw material weight per-cent of stability bonding agent is: 325 object zirconium whites 25%, 325 object Alpha-alumina micro mists 5%, 250 object soft clay powder 13%, surplus is water.Above-mentioned raw materials is mixed and through edge runner-wet mill mixed grind evenly after, use the compression moulding of high tonnage hydraulic press, and be placed in the high temperature sintering furnace of 1485 ℃ and fire.
Embodiment 4
Get respectively homogenization material 30-40 part, sillimanite 15-20 part, andaluzite 30-35 part, Alpha-alumina 15-20 part, zirconium white 7-10 part, soft clay powder 15-25 part; The addition of stability bonding agent is the 5-10% of base-material gross weight; The raw material weight per-cent of stability bonding agent is: 325 object zirconium white 25-35%, 325 object Alpha-alumina micro mist 5-10%, 250 object soft clay powder 13-17%, surplus is water.Above-mentioned raw materials is mixed and through edge runner-wet mill mixed grind evenly after, use the compression moulding of high-pressure molding device, and be placed in the high temperature sintering furnace of 1500 ℃ and fire.
Embodiment 5
Get respectively 35 parts of homogenization materials, 18 parts of sillimanites, 32 parts of andaluzites, 18 parts of Alpha-aluminas, 8 parts of zirconium whites, 20 parts, soft clay powder; The addition of stability bonding agent is 8% of base-material gross weight; The raw material weight per-cent of stability bonding agent is: 325 object zirconium whites 15%, 325 object Alpha-aluminas 20%, 250 object soft clay powder 35%, surplus is water.Above-mentioned raw materials is mixed and through edge runner-wet mill mixed grind evenly after, use the compression moulding of high-pressure molding device, and be placed in the high temperature sintering furnace of 1485 ℃ and fire.
Claims (6)
1. a compound anti-thermal shock alumina firebrick, is characterized in that, by base-material and stability bonding agent, is made, and the addition of stability bonding agent is the 2%-15% of base-material gross weight;
The parts by weight of raw materials of described base-material is: homogenization material 20-60 part, sillimanite 10-25 part, andaluzite 15-45 part, Alpha-alumina 10-25 part, zirconium white 5-15 part, soft clay powder 10-35 part;
The raw material weight per-cent of described stability bonding agent is: zirconium white 15%-45%, Alpha-alumina 3%-15%, soft clay powder 10%-20%, and surplus is water; In described stability bonding agent: zirconium white is that 325 orders, Alpha-alumina are that 325 orders, soft clay powder are 250 orders.
2. a kind of compound anti-thermal shock alumina firebrick as claimed in claim 1, is characterized in that, the addition of stability bonding agent is the 5-10% of base-material gross weight;
The parts by weight of raw materials of described base-material is: homogenization material 30-40 part, sillimanite 15-20 part, andaluzite 30-35 part, Alpha-alumina 15-20 part, zirconium white 7-10 part, soft clay powder 15-25 part;
The raw material weight per-cent of described stability bonding agent is: zirconium white 25-35%, Alpha-alumina 5-10%, soft clay powder 13-17%, surplus is water.
3. a kind of compound anti-thermal shock alumina firebrick as claimed in claim 2, is characterized in that, the addition of stability bonding agent is 8% of base-material gross weight;
The parts by weight of raw materials of described base-material is: 35 parts of homogenization materials, 18 parts of sillimanites, 32 parts of andaluzites, 18 parts of Alpha-aluminas, 8 parts of zirconium whites, 20 parts, soft clay powder;
The raw material weight per-cent of described stability bonding agent is: zirconium white 15%, Alpha-alumina 20%, soft clay powder 35%, surplus is water.
4. the preparation method of a kind of compound anti-thermal shock alumina firebrick as claimed in claim 1, is characterized in that: by described base-material and stability bonding agent according to proportioning mixed grind evenly after, machine-processed moulding is fired at the temperature of 1475 ℃-1500 ℃.
5. the preparation method of a kind of compound anti-thermal shock alumina firebrick as claimed in claim 4, is characterized in that: during machine-processed moulding, adopt high tonnage hydraulic press or the compression moulding of high-pressure molding device.
6. the preparation method of a kind of compound anti-thermal shock alumina firebrick as claimed in claim 4, is characterized in that: described firing temperature is 1485 ℃.
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| TWI576329B (en) * | 2015-12-09 | 2017-04-01 | 財團法人金屬工業研究發展中心 | A sintering method for porous material |
| CN107337461A (en) * | 2017-07-19 | 2017-11-10 | 合肥铭佑高温技术有限公司 | A kind of manufacturing process of environmentally friendly refractory brick |
| CN109180146A (en) * | 2018-09-18 | 2019-01-11 | 明光瑞尔非金属材料有限公司 | A kind of anticracking refractory brick of environmental protection and preparation method thereof |
| CN109251017A (en) * | 2018-09-18 | 2019-01-22 | 明光瑞尔非金属材料有限公司 | A kind of pyrolysis oven composite light heat resistanceheat resistant refractory brick and preparation method thereof |
| CN111662075A (en) * | 2020-07-01 | 2020-09-15 | 郑州凯翔耐火材料有限公司 | Composite aluminum silicon carbide brick and preparation method thereof |
| CN111662076A (en) * | 2020-07-01 | 2020-09-15 | 郑州凯翔耐火材料有限公司 | High-strength high-alumina brick and preparation method thereof |
| CN114249596B (en) * | 2020-09-23 | 2023-03-17 | 河南中原特种耐火材料有限公司 | Semi-light clay brick for glass melting furnace pool bottom cushion layer and preparation method thereof |
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| CN102775165A (en) * | 2012-07-30 | 2012-11-14 | 浙江锦诚耐火材料有限公司 | Blast furnace tapping channel castable |
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| CN102775165A (en) * | 2012-07-30 | 2012-11-14 | 浙江锦诚耐火材料有限公司 | Blast furnace tapping channel castable |
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Effective date of registration: 20210409 Address after: 524000 No.18, ban Dao Dong Avenue, Dongjian street, Zhanjiang Economic and Technological Development Zone, Zhanjiang City, Guangdong Province Patentee after: BAOSTEEL ZHANJIANG IRON AND STEEL Co.,Ltd. Patentee after: ZHENGZHOU KAIXIANG REFRACTORIES Co.,Ltd. Address before: 452385 Chuling village, Chaohua Town, Xinmi City, Zhengzhou City, Henan Province Patentee before: ZHENGZHOU KAIXIANG REFRACTORIES Co.,Ltd. |
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