CN107021764A - High temperature sillimanite brick and its production method - Google Patents

High temperature sillimanite brick and its production method Download PDF

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Publication number
CN107021764A
CN107021764A CN201710330750.9A CN201710330750A CN107021764A CN 107021764 A CN107021764 A CN 107021764A CN 201710330750 A CN201710330750 A CN 201710330750A CN 107021764 A CN107021764 A CN 107021764A
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sillimanite
parts
high temperature
granularity
powder
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CN107021764B (en
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马金奎
王玉付
马金龙
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Huixian Dongfang Refractory Material Co Ltd
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Huixian Dongfang Refractory Material Co Ltd
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D1/00—Casings; Linings; Walls; Roofs
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
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    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3244—Zirconium oxides, zirconates, hafnium oxides, hafnates, or oxide-forming salts thereof
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3427—Silicates other than clay, e.g. water glass
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    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/34—Non-metal oxides, non-metal mixed oxides, or salts thereof that form the non-metal oxides upon heating, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/349—Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite
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    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
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    • C04B2235/5418—Particle size related information expressed by the size of the particles or aggregates thereof
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Abstract

The invention discloses a kind of high temperature sillimanite brick, contain the following raw materials in units of parts by weight, 5~10 parts of andalusite, 10~25 parts of zircon, 10~25 parts of mullite, 20~35 parts of pickling sillimanite, 10~25 parts of alumina powder, 10~25 parts of bonding clay；Wherein：The particulate material of mullite and the mass ratio 3 of fine powder material:7.The production method of the high temperature sillimanite brick, returned including raw material mixed grind, ageing mixture grind, compressing and sintering finished etc. processing step, adobe is incubated into 10~12 hours at a temperature of 1450~1500 by hyperthermia tunnel Kiln after compressing to burn till, natural cooling, by adobe finished product kiln discharge, obtains high temperature sillimanite brick after 48~52 hours.The present invention can extend service life of the high temperature sillimanite brick in high temperature melting furnaces, prevent high temperature sillimanite brick from occurring crackle and peeling phenomenon in use by adding the compositions such as zircon, andalusite, mullite in pickling sillimanite.

Description

High temperature sillimanite brick and its production method
Technical field：
The present invention relates to a kind of high temperature sillimanite brick and its production method, belong to technical field of refractory materials.
Background technology：
Sillimanite brick is usually used on the furnace lining of high temperature melting furnaces and high temperature hot-blast furnace.Traditional sillimanite brick containing certain because gluing Soil and inorganic matter bonding agent, easily cause sillimanite brick and occur crackle and peeling phenomenon in high temperature and cooling procedure, shorten silicon line The stone brick life-span in use, and then shorten the service life of high temperature melting furnaces and high temperature hot-blast furnace.
The content of the invention：
The technical problems to be solved by the invention are：A kind of high temperature sillimanite brick and its production method are provided, produced High temperature sillimanite brick can prevent occurring crackle and peeling phenomenon in high temperature and cooling procedure, extend the use longevity of sillimanite brick Life.
The present invention is for the technical solution adopted for solving the technical problem：
A kind of high temperature sillimanite brick, containing the following raw materials in units of parts by weight, 5~10 parts of andalusite, zircon 10~ 25 parts, 10~25 parts of mullite, 20~35 parts of pickling sillimanite, 10~25 parts of alumina powder, 10~25 parts of bonding clay；Its In：The particulate material of mullite and the mass ratio 3 of fine powder material:7 .
The andalusite is that granularity is less than the high-purity andalusite powder of 200 purposes, and the zircon is the zirconium that granularity is less than 350 mesh Diamond stone powder, the granularity of the mullite particle material is between 10~20 mesh, and the granularity of the mullite fine powder material is 300~350 Between mesh, the pickling sillimanite is that granularity is less than the high-purity pickling sillimanite powder of 200 purposes, and the alumina powder is less than for granularity The Highly pure alumina micro-powder of 625 mesh, the clay is the bonding clay that granularity is less than 200 mesh.
The pickling sillimanite is to obtain sillimanite by 10% watery hydrochloric acid soaking and stirring after 10~20 minutes, is done Pulverized and sieved after dry, obtain granularity less than the high-purity pickling sillimanite powder of 200 purposes.
The production method of high temperature sillimanite brick recited above, including raw material mixed grind, ageing mixture return stone roller, compressing and sintering The processing steps such as finished product, it is characterised in that：
1. raw material mixed grind：The selected each raw material for meeting granularity requirements, constitutes weighing, first by andalusite, zirconium English by parts by weight of raw materials Stone, mullite and bonding clay mixed grind 5~10 minutes, then add pickling sillimanite powder and alumina powder mixed grind 5~10 Minute, obtain compound A；
2. ageing mixture, which is returned, grinds：By compound A ageing mixtures 24~36 hours, stone roller is returned after shaping again 5~10 minutes, obtain compound B；
3. it is compressing：Compound B is pressed into adobe by forming press, then dries, is less than adobe water content 0.8%；
4. it is sintering finished：Adobe is incubated into 10~12 hours at a temperature of 1450~1500 by hyperthermia tunnel Kiln to burn till, from By adobe finished product kiln discharge after so cooling down 48~52 hours, high temperature sillimanite brick is obtained.
Wherein：Step 3. in drying stage, be using the waste heat of step 4. high temperature Cooling Section of Tunnel Kiln 120~ It is dried at a temperature of 200.
The innovation point of the present invention is as follows：
1st, the present invention can extend high temperature sillimanite by adding the compositions such as zircon, andalusite, mullite in pickling sillimanite Service life of the brick in high temperature melting furnaces, prevents high temperature sillimanite brick from occurring crackle and peeling phenomenon in use.
2nd, the present invention can be used for a long time at high temperature in order to control and increase sillimanite brick, and zircon is added in formula And andalusite, there is high temperature resistant, cold crushing strength height using them, thermal conductivity factor is small, the coefficient of expansion is uniform, thermal shock resistance （It is secondary）' 1100 DEG C of water coolings ' good, refractoriness under load is high, high-temerature creep value is small, resistance to chemical corrosion is good characteristic, can be by height The refractoriness under load of warm sillimanite brick brings up to 1700 DEG C, thermal shock resistance（It is secondary）' 1100 DEG C of water coolings ' bring up to 25 times, often Warm compressive resistance brings up to 130MPa, can substantially eliminate crackle and peel off existing that high temperature sillimanite brick easily occurs in use As.
Related high temperature sillimanite brick physical and chemical index of the invention is as follows：
As can be seen from the above table：The high temperature sillimanite brick that the present invention is produced, complies fully with national standard.The present invention is produced High temperature sillimanite brick can eliminate crackle and peeling phenomenon that high temperature sillimanite brick occurs in use.
Embodiment：
The present invention is made further explanation and description with reference to specific embodiment：
Embodiment 1：A kind of high temperature sillimanite brick, contains the following raw materials in units of parts by weight, 5 parts of andalusite, zircon 10 parts, 10 parts of mullite, 20 parts of pickling sillimanite, 10 parts of alumina powder, 10 parts of bonding clay；Wherein：The particulate material of mullite With the mass ratio 3 of fine powder material:7 .
The andalusite is that granularity is less than the high-purity andalusite powder of 200 purposes, and the zircon is the zirconium that granularity is less than 350 mesh Diamond stone powder, the granularity of the mullite particle material is between 10~20 mesh, and the granularity of the mullite fine powder material is 300~350 Between mesh, the pickling sillimanite is that granularity is less than the high-purity pickling sillimanite powder of 200 purposes, and the alumina powder is less than for granularity The Highly pure alumina micro-powder of 625 mesh, the clay is the bonding clay that granularity is less than 200 mesh.
The pickling sillimanite is to obtain sillimanite by 10% watery hydrochloric acid soaking and stirring after 10~20 minutes, is done Pulverized and sieved after dry, obtain granularity less than the high-purity pickling sillimanite powder of 200 purposes.
The production method of high temperature sillimanite brick recited above, including raw material mixed grind, ageing mixture return stone roller, compressing and sintering The processing steps such as finished product, it is characterised in that：
1. raw material mixed grind：The selected each raw material for meeting granularity requirements, constitutes weighing, first by andalusite, zirconium English by parts by weight of raw materials Stone, mullite and bonding clay mixed grind 5~10 minutes, then add pickling sillimanite powder and alumina powder mixed grind 5~10 Minute, obtain compound A；
2. ageing mixture, which is returned, grinds：By compound A ageing mixtures 24~36 hours, stone roller is returned after shaping again 5~10 minutes, obtain compound B；
3. it is compressing：Compound B is pressed into adobe by forming press, then dries, is less than adobe water content 0.8%；
4. it is sintering finished：Adobe is incubated into 10~12 hours at a temperature of 1450~1500 by hyperthermia tunnel Kiln to burn till, from By adobe finished product kiln discharge after so cooling down 48~52 hours, high temperature sillimanite brick is obtained.
Wherein：Step 3. in drying stage, be using the waste heat of step 4. high temperature Cooling Section of Tunnel Kiln 120~ It is dried at a temperature of 200.
Embodiment 2：The present embodiment is identical with the production method of embodiment 1, and something in common is not repeated, and difference exists In：A kind of high temperature sillimanite brick, contains the following raw materials in units of parts by weight, 10 parts of andalusite, 25 parts of zircon, Mo Lai 25 parts of stone, 35 parts of pickling sillimanite, 25 parts of alumina powder, 25 parts of bonding clay；Wherein：The particulate material of mullite and fine powder material Mass ratio 3:7 .
Embodiment 3：The present embodiment is identical with the production method of embodiment 1, and something in common is not repeated, and difference exists In：A kind of high temperature sillimanite brick, contains the following raw materials in units of parts by weight, 8 parts of andalusite, 20 parts of zircon, Mo Lai 20 parts of stone, 30 parts of pickling sillimanite, 20 parts of alumina powder, 20 parts of bonding clay；Wherein：The particulate material of mullite and fine powder material Mass ratio 3:7 .
Embodiment 4：The present embodiment is identical with the production method of embodiment 1, and something in common is not repeated, and difference exists In：A kind of high temperature sillimanite brick, contains the following raw materials in units of parts by weight, 6 parts of andalusite, 22 parts of zircon, Mo Lai 12 parts of stone, 26 parts of pickling sillimanite, 18 parts of alumina powder, 23 parts of bonding clay；Wherein：The particulate material of mullite and fine powder material Mass ratio 3:7 .
Embodiment 5：The present embodiment is identical with the production method of embodiment 1, and something in common is not repeated, and difference exists In：A kind of high temperature sillimanite brick, contains the following raw materials in units of parts by weight, 9 parts of andalusite, 14 parts of zircon, Mo Lai 17 parts of stone, 32 parts of pickling sillimanite, 20 parts of alumina powder, 19 parts of bonding clay；Wherein：The particulate material of mullite and fine powder material Mass ratio 3:7 .
Embodiment 6：The present embodiment is identical with the production method of embodiment 1, and something in common is not repeated, and difference exists In：A kind of high temperature sillimanite brick, contains the following raw materials in units of parts by weight, 9 parts of andalusite, 17 parts of zircon, Mo Lai 24 parts of stone, 27 parts of pickling sillimanite, 19 parts of alumina powder, 20 parts of bonding clay；Wherein：The particulate material of mullite and fine powder material Mass ratio 3:7 .

Claims (5)

1. a kind of high temperature sillimanite brick, it is characterised in that：Contain the following raw materials in units of parts by weight, andalusite 5~10 Part, 10~25 parts of zircon, 10~25 parts of mullite, 20~35 parts of pickling sillimanite, 10~25 parts of alumina powder, bonding clay 10~25 parts；Wherein：The particulate material of mullite and the mass ratio 3 of fine powder material:7 .
2. high temperature sillimanite brick according to claim 1, it is characterised in that：The andalusite is that granularity is less than 200 purposes High-purity andalusite powder, the zircon is the zircon powder that granularity is less than 350 mesh, the granularity of the mullite particle material 10~ Between 20 mesh, the granularity of the mullite fine powder material is between 300~350 mesh, and the pickling sillimanite is that granularity is less than 200 mesh High-purity pickling sillimanite powder, the alumina powder be granularity be less than 625 mesh Highly pure alumina micro-powder, the clay be granularity Less than the bonding clay of 200 mesh.
3. high temperature sillimanite brick according to claim 2, it is characterised in that：The pickling sillimanite is to pass through sillimanite What 10% watery hydrochloric acid soaking and stirring was obtained after 10~20 minutes, crushed after being dried sieving obtains granularity high-purity less than 200 purposes Pickling sillimanite powder.
4. a kind of production method of the high temperature sillimanite brick described in claim 3, including raw material mixed grind, ageing mixture return and grind, are pressed into Type and the processing step such as sintering finished, it is characterised in that：
1. raw material mixed grind：The selected each raw material for meeting granularity requirements, constitutes weighing, first by andalusite, zirconium English by parts by weight of raw materials Stone, mullite and bonding clay mixed grind 5~10 minutes, then add pickling sillimanite powder and alumina powder mixed grind 5~10 Minute, obtain compound A；
2. ageing mixture, which is returned, grinds：By compound A ageing mixtures 24~36 hours, stone roller is returned after shaping again 5~10 minutes, obtain compound B；
3. it is compressing：Compound B is pressed into adobe by forming press, then dries, is less than adobe water content 0.8%；
4. it is sintering finished：Adobe is incubated into 10~12 hours at a temperature of 1450~1500 by hyperthermia tunnel Kiln to burn till, from By adobe finished product kiln discharge after so cooling down 48~52 hours, high temperature sillimanite brick is obtained.
5. the production method of high temperature sillimanite brick according to claim 4, it is characterised in that：Step 3. in drying rank Section, is to be dried using the waste heat of step 4. high temperature Cooling Section of Tunnel Kiln at a temperature of 120~200.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110229010A (en) * 2019-07-11 2019-09-13 武汉重远炉窑工程技术服务有限公司 A kind of zirconium matter soldering material and its application method
CN113773096A (en) * 2021-09-27 2021-12-10 山东耐材集团鲁耐窑业有限公司 High thermal shock high strength high-load soft coke oven sillimanite brick and preparation method thereof
CN116573944A (en) * 2023-04-28 2023-08-11 广东新岭南科技有限公司 Sillimanite refractory material, preparation method thereof and sillimanite brick

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