CN101633578A - Special type composite low alumina mullite brick and preparation method thereof - Google Patents
Special type composite low alumina mullite brick and preparation method thereof Download PDFInfo
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- CN101633578A CN101633578A CN200910065859A CN200910065859A CN101633578A CN 101633578 A CN101633578 A CN 101633578A CN 200910065859 A CN200910065859 A CN 200910065859A CN 200910065859 A CN200910065859 A CN 200910065859A CN 101633578 A CN101633578 A CN 101633578A
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Abstract
The invention discloses a special type composite low alumina mullite brick which is prepared by raw materials by weight percent: 10-30% of mullite with granularity of 3-1mm, 20-40% of flint clay with granularity of 3-1mm, 10-20% of flint clay with granularity of 1-0mm, 5-15% of flint clay with granularity of -200 meshes, 10-30% of sillimanite or andalusite, and 15-25% of additive. The materials weighed according to the mixture ratio are mixed and ground, processed by ageing, extruded to be molded, dried and finally sintered, so that the special type composite low alumina mullite brick can be obtained. The special type composite low alumina mullite brick has the advantages of low apparent porosity and impurity, high strength and refractoriness under load, micro-expanded product, high mullite phase and the like, and has the function of one brick for multiple purposes. The application of the special type composite low alumina mullite brick can save a great deal of maintenance costs and energy conservation cost for steel users, thus having remarkable social and economic benefits.
Description
One, technical field:
The present invention relates to a kind of refractory materials, particularly relate to a kind of special type composite low alumina mullite brick and preparation method thereof.
Two, background technology:
Along with the maximization of modern blast furnace, high wind-warm syndrome and high strength are smelted, the working conditions of blast furnace constantly harshnessization, particularly blast furnace top more and more becomes the critical area that restricts its long-lived operation and on-road efficiency thereof.Research through numerous technician and worker's unremitting effort is explored, and the cause for erosion of blast furnace stack has been had further understood, and its reason mainly contains 3 points: one is that material is to the wearing and tearing of bricking and the erosion damage of coal gas stream; It two is the chemical erosion to bricking of basic metal and zinc fume; It three is the destruction of thermal stresses.
Iron ladle plays important effect as the visual plant of blast furnace transhipment molten iron in the blast furnace casting process, its working conditions is continuous harshnessization also, has now seriously restricted the work-ing life of iron ladle with the leck brick.Through the research of numerous technician and worker's unremitting effort, present main cause for erosion to the iron ladle bricking has had further understands in depth, and its major cause is: one is the erosion damage effect of molten iron; It two is the erosion damage of scum; Its three destruction for temperature fluctuation generation thermal stresses.
At present, now leck brick, phosphate impregnation clay brick, low pore clay brick etc. are arranged with the clay brick that uses on blast furnace, the iron ladle, used clay brick is of a great variety, the index request disunity, increased a lot of unnecessary troubles for like this refractory materials production firm, when ordering goods to metallurgy industry simultaneously a lot of doubts have been brought up in the reference of data.Therefore, now being badly in need of development research goes out one or more and has the apparent porosity that surpasses low pore clay brick, the intensity that surpasses high-strength clay brick, and has the performance that other clay bricks do not have, for example: higher refractoriness under load, thermal shock resistance preferably, good abrasion resistance, higher mullite phase content, the fire proof material brick of advantages such as anti-CO erosion test is unaffected, when this brick can satisfy blast furnace longevity, also can satisfy the service requirements at the multiple position of multiple industry, can play the function that a brick is used more, this brick can be used and on blast furnace, do furnace lining, a jar lining is made in use on iron ladle, also can be used as simultaneously kiln lining of glass kiln or the like, this Products Development will make refractories industry that the control of product is more prone to, and also makes simultaneously metallurgy industry unified reference standard be arranged at brickwork on brick.
The applicant Gongyi Wunai Technology Development Co., Ltd. is in order to adapt to the fast development of refractories industry, sum up the experience that each steel mill produces and self researches and develops of giving in recent years, in conjunction with blast furnace leck brick, the phosphate impregnation clay brick, the performance index requirement of the national standard of low pore clay brick of iron ladle brick and glass kiln, research through protracted and unremitting efforts, success develop the special type composite low alumina mullite brick that an a kind of brick is used more, this product has low apparent porosity, low impurity, high strength, high refractoriness under load, the goods microdilatancy, mullite phase advantages of higher.
Three, summary of the invention:
The technical problem to be solved in the present invention is: a kind of special type composite low alumina mullite brick with advantages such as low apparent porosity, high strength, high refractoriness under load, good thermal shock stability, high-wearing features and preparation method thereof is provided.
Technical scheme of the present invention is:
The invention provides a kind of special type composite low alumina mullite brick, represent with weight percentage, containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 10～30% of 3～1mm, granularity is the flint clay 20～40% of 3～1mm, granularity is the flint clay 10～20% of 1～0mm, granularity is-200 purpose flint claies 5～15%, sillimanite or andaluzite 10～30% and additive 15～25%.
According to above-mentioned special type composite low alumina mullite brick, containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 10～20% of 3～1mm, granularity is the flint clay 20～30% of 3～1mm, granularity is the flint clay 10～15% of 1～0mm, granularity is-200 purpose flint claies 10～15%, sillimanite or andaluzite 20～30% and additive 20～25%.
According to above-mentioned special type composite low alumina mullite brick, containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 20～30% of 3～1mm, granularity is the flint clay 30～40% of 3～1mm, granularity is the flint clay 10～20% of 1～0mm, granularity is-200 purpose flint claies 5～10%, sillimanite or andaluzite 10～20% and additive 15～20%.
According to above-mentioned special type composite low alumina mullite brick, containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 15～25% of 3～1mm, granularity is the flint clay 25～35% of 3～1mm, granularity is the flint clay 13～17% of 1～0mm, granularity is-200 purpose flint claies 6～12%, sillimanite or andaluzite 15～25% and additive 16～22%.
According to above-mentioned special type composite low alumina mullite brick, described mullite is Al
2O
3Content is 45% 45 mullites, Al
2O
3Content is 60% 60 mullites or Al
2O
3Content is 70% 70 mullites; Fe in the described mullite
2O
3≤ 1.2%, R
2O≤0.7%.
According to above-mentioned special type composite low alumina mullite brick, what described flint clay adopted is tafelberg flint clay, Shandong flint clay or Qinyang flint clay.
According to above-mentioned special type composite low alumina mullite brick, the granularity of described sillimanite is 180 orders～280 orders or 0.5～0mm, and described sillimanite is Jixi sillimanite or Linkou County's sillimanite; The granularity of described andaluzite is 180 orders～280 orders or 0.5～0mm, and described andaluzite is Xinjiang andaluzite, south african andalusite or Mei County andaluzite.
According to above-mentioned special type composite low alumina mullite brick, described additive is compound material in Linzhou City or zirconium powder, and the granularity of the compound material in described Linzhou City is 180 orders～280 orders, and the granularity of described zirconium powder is 200～320 orders.
A kind of preparation method of special type composite low alumina mullite brick: the proportioning raw materials according to above-mentioned each described special type composite low alumina mullite brick is prepared burden, prepared materials poured into carry out mixed grind in the wheel roller, the mixed grind time is 10～20 minutes, after mixed grind finishes with mixture ageing mixture 10～15 hours, behind the ageing mixture its material being adopted the friction press extrusion molding is adobe, then adobe is imported and carry out roasting in the tunnel furnace, utilize the waste heat of Cooling Section of Tunnel Kiln to dry in the roasting process earlier, carry out roasting after the oven dry, when reaching 1400～1440 ℃, maturing temperature enters insulating process, through insulation in 12～14h hour, get final product kiln discharge behind the naturally cooling, obtain the special type composite low alumina mullite brick product.
According to the preparation method of above-mentioned special type composite low alumina mullite brick, the adobe volume density of described extrusion molding is 2.4～2.6g/cm
3The waste heat supply temperature of described Cooling Section of Tunnel Kiln is 110～200 ℃, and drying time is 8～12h, and residual moisture content is＜0.5% in the oven dry back adobe.
The compound material in additive Linzhou City (being the compound material of sillmanite and andaluzite) that the present invention adopts, its manufacturer is Linzhou City big grand sillmanite company limited, model is GH-38; Performance: have the microstructure of the characteristic of andaluzite, two kinds of mineral of sillimanite, be heated to 1300 ℃ secondary mulliteization irreversibly takes place later on, and be attended by volumetric expansion to a certain degree.Purposes: this product is applicable in the high alumina matter goods and clayey product in the aluminium silicon series product, also is fit to very much the special type composite low alumina mullite brick of our development simultaneously.
Positive beneficial effect of the present invention:
1, product special type composite low alumina mullite brick of the present invention has advantages such as low apparent porosity, low impurity, high strength, high refractoriness under load, goods microdilatancy, can satisfy the use of the used leck brick of modern big-and-middle-sized blast furnace, phosphate impregnation clay brick, glass kiln fully with numerous high temperature kiln like products such as low pore clay brick, iron ladle bricks, and to energy-saving and environmental protection, efficient, longevity have great importance (performance index of product of the present invention see table one for details).
2, the present invention is by the microstructure of the raw-material use of strict control, control goods, and take as the leading factor with crystallization effect, when producing the glassy phase acceleration of sintering, control matrix mullitization effect, thereby reach the characteristics of goods high strength, high refractoriness under load; Adopt on the other hand and add additive, thereby when utilizing it to participate in the phase transformation of goods sintering and reach low apparent porosity, make its product can reach higher mullite phase, thermal shock resistance, good alkali resistance and be not subjected to CO corrosive effect (performance index of product of the present invention see table one for details) preferably.
3, product of the present invention is to combine a kind of special type composite low alumina mullite brick that blast furnace is developed on leck brick, phosphate impregnation clay brick, the glass kiln basis with numerous standards such as low pore clay brick, iron ladle brick and present refractory materials development trend.The special type composite low alumina mullite brick of the present invention's preparation has not only reached blast furnace and has used the level (blast furnace sees Table two with leck brick, phosphate impregnation clay brick, glass kiln with the performance index national standard of low pore clay brick) of hanging down like products such as pore clay brick with leck brick, phosphate impregnation clay brick, glass kiln on every physical and chemical index, and its overall target surpassed the national standard of these three kinds of products, increased indexs such as anti-CO aggressiveness that three kinds of products did not have, mullite phase content height, good thermal shock stability simultaneously.Product of the present invention is used in steel mills of tens of family such as Wuhan Iron and Steel Plant, Shoudu Iron and Steel Co, elder brother's steel through promoting the use of widely, and productive capacity has surpassed the best level of the same period in the past, demonstrates good result of use in present use.Therefore, the application of product special type composite low alumina mullite brick of the present invention will have obvious social and economic benefit for steel users saving a large amount of maintenance cost and energy-conservation expense.
Table one: the performance index of product special type composite low alumina mullite brick of the present invention
| Project | ??FM1 | ??FM2 |
| Volume density BD, g/cm 3 | ??2.43 | ??2.37 |
| Apparent porosity AP, % | ??9.8 | ??14.7 |
| Cold crushing strength CCS, Mpa | ??136 | ??118 |
| 0.20Mpa loading softening begins temperature, ℃ | ??1521 | ??1508 |
| Heavily burn line and change %, 1450 ℃ * 3h | ??+0.1～-0.1 | ??+0.1～-0.1 |
| The mullite phase, % | ??50 | ??45 |
| Thermal shock resistance (1100 ℃ of water-cooleds, inferior) | ??10 | ??15 |
| Anti-CO corrodes | Unaffected | Unaffected |
| Wear resistance | ??7.43 | ??5.80 |
| ??Al 2O 3，％ | ??46.08 | ??46.71 |
| ??Fe 2O 3，％ | ??1.16 | ??1.35 |
| ??K 2O，％ | ??0.52 | ??0.67 |
| ??Na 2O，％ | ??0.23 | ??0.38 |
Table two: the national standard of three kinds of clay bricks
Four, embodiment:
Following examples only in order to further specify the present invention, do not limit content of the present invention.
Embodiment one: a kind of special type composite low alumina mullite brick and preparation method thereof
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 10% of 3～1mm, granularity is the Shandong flint clay 40% of 3～1mm, granularity is the Shandong flint clay 10% of 1～0mm, granularity is-200 purpose Shandong flint claies 15%, Jixi sillimanite (granularity is 200 orders) 10% and zirconium powder (granularity is 300 orders) 15%.
The preparation method of product special type composite low alumina mullite brick of the present invention:
Proportioning raw materials according to above-mentioned special type composite low alumina mullite brick is prepared burden, prepared materials poured into carry out mixed grind in the wheel roller, the mixed grind time is 10～20 minutes, after mixed grind finishes with mixture ageing mixture 10～15 hours, behind the ageing mixture its material being adopted the friction press extrusion molding is adobe, and the volume density of extrusion molding adobe is 2.4～2.6g/cm
3Then adobe is imported and carry out roasting in the tunnel furnace, utilize the waste heat of Cooling Section of Tunnel Kiln to dry in the roasting process earlier, the waste heat supply temperature of Cooling Section of Tunnel Kiln is 110～200 ℃, and drying time is 8～12h, residual moisture content is＜0.5% in the oven dry back adobe, carry out roasting after the oven dry, when maturing temperature reaches 1400～1440 ℃, enter insulating process, through insulation in 12～14h hour, get final product kiln discharge behind the naturally cooling, obtain the special type composite low alumina mullite brick product.
Embodiment two: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 20% of 3～1mm, granularity is tafelberg flint clay 20% of 3～1mm, granularity is tafelberg flint clay 20% of 1～0mm, granularity is-200 purpose tafelberg flint claies 5%, Linkou County's sillimanite (granularity is 240 orders) 15% and zirconium powder (granularity is 180 orders) 20%.
The preparation method of special type composite low alumina mullite brick of the present invention, with embodiment one difference be: the mixed grind time is 15 minutes, the ageing mixture time is 12h, insulation 13h when maturing temperature reaches 1420 ℃.
Embodiment three: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 30% of 3～1mm, granularity is tafelberg flint clay 20% of 3～1mm, granularity is tafelberg flint clay 10% of 1～0mm, granularity is-200 purpose tafelberg flint claies 5%, Linkou County's sillimanite (granularity is 280 orders) 10% and zirconium powder (granularity is 240 orders) 25%.
The preparation method of special type composite low alumina mullite brick of the present invention, with embodiment one difference be: the mixed grind time is 10 minutes, the ageing mixture time is 15h, insulation 12h when maturing temperature reaches 1440 ℃.
Embodiment four: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 15% of 3～1mm, granularity is the Qinyang flint clay 30% of 3～1mm, granularity is the Qinyang flint clay 15% of 1～0mm, granularity is-200 purpose Qinyang flint claies 5%, and (granularity is 0.5～0mm) 20% and zirconium powder (granularity is 320 orders) 15% to Jixi sillimanite.
The preparation method of special type composite low alumina mullite brick of the present invention, with embodiment one difference be: the mixed grind time is 20 minutes, the ageing mixture time is 10h, insulation 14h when maturing temperature reaches 1400 ℃.
Embodiment five: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 12% of 3～1mm, granularity is the Qinyang flint clay 23% of 3～1mm, granularity is the Qinyang flint clay 12% of 1～0mm, granularity is-200 purpose Qinyang flint claies 8%, Xinjiang andaluzite (granularity is 200 orders) 30% and the compound material in Linzhou City (granularity is 200 orders) 15%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment six: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 18% of 3～1mm, granularity is the Qinyang flint clay 22% of 3～1mm, granularity is the Qinyang flint clay 18% of 1～0mm, granularity is-200 purpose Qinyang flint claies 12%, Xinjiang andaluzite (granularity is 220 orders) 12% and the compound material in Linzhou City (granularity is 250 orders) 18%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment seven: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 10% of 3～1mm, granularity is the Shandong flint clay 26% of 3～1mm, granularity is the Shandong flint clay 13% of 1～0mm, granularity is-200 purpose Shandong flint claies 6%, south african andalusite (granularity is 180 orders) 22% and zirconium powder (granularity is 300 orders) 23%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment eight: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 26% of 3～1mm, granularity is the Shandong flint clay 20% of 3～1mm, granularity is the Shandong flint clay 11% of 1～0mm, granularity is-200 purpose Shandong flint claies 5%, Mei County andaluzite (granularity is 280 orders) 23% and the compound material in Linzhou City (granularity is 260 orders) 15%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment nine: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 10% of 3～1mm, granularity is the Shandong flint clay 34% of 3～1mm, granularity is the Shandong flint clay 10% of 1～0mm, granularity is-200 purpose Shandong flint claies 5%, and (granularity is 0.5～0mm) 26% and the compound material in Linzhou City (granularity is 200 orders) 15% to the Xinjiang andaluzite.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment ten: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 10% of 3～1mm, granularity is the Shandong flint clay 20% of 3～1mm, granularity is the Shandong flint clay 15% of 1～0mm, granularity is-200 purpose Shandong flint claies 15%, and (granularity is 0.5～0mm) 20% and the compound material in Linzhou City (granularity is 220 orders) 20% to the Xinjiang andaluzite.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 11: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 20% of 3～1mm, granularity is the Shandong flint clay 20% of 3～1mm, granularity is the Shandong flint clay 10% of 1～0mm, granularity is-200 purpose Shandong flint claies 10%, south african andalusite (granularity is 200 orders) 20% and zirconium powder (granularity is 200 orders) 20%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 12: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 15% of 3～1mm, granularity is the Shandong flint clay 20% of 3～1mm, granularity is the Shandong flint clay 10% of 1～0mm, granularity is-200 purpose Shandong flint claies 10%, Xinjiang andaluzite (granularity is 250 orders) 20% and zirconium powder (granularity is 220 orders) 25%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 13: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 10% of 3～1mm, granularity is the Shandong flint clay 30% of 3～1mm, granularity is the Shandong flint clay 10% of 1～0mm, granularity is-200 purpose Shandong flint claies 10%, and (granularity is 0.5～0mm) 20% and zirconium powder (granularity is 280 orders) 20% to Jixi sillimanite.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 14: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 10% of 3～1mm, granularity is tafelberg flint clay 25% of 3～1mm, granularity is tafelberg flint clay 10% of 1～0mm, granularity is-200 purpose tafelberg flint claies 10%, Jixi sillimanite (granularity is 180 orders) 25% and the compound material in Linzhou City (granularity is 280 orders) 20%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 15: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 10% of 3～1mm, granularity is tafelberg flint clay 20% of 3～1mm, granularity is tafelberg flint clay 10% of 1～0mm, granularity is-200 purpose tafelberg flint claies 10%, Linkou County's sillimanite (granularity is 280 orders) 30% and the compound material in Linzhou City (granularity is 240 orders) 20%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 16: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 12% of 3～1mm, granularity is tafelberg flint clay 21% of 3～1mm, granularity is tafelberg flint clay 12% of 1～0mm, granularity is-200 purpose tafelberg flint claies 13%, Linkou County's sillimanite (granularity is 200 orders) 21% and the compound material in Linzhou City (granularity is 180 orders) 21%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 17: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 17% of 3～1mm, granularity is tafelberg flint clay 20% of 3～1mm, granularity is tafelberg flint clay 10% of 1～0mm, granularity is-200 purpose tafelberg flint claies 10%, Jixi sillimanite (granularity is 180 orders) 20% and the compound material in Linzhou City (granularity is 200 orders) 23%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 18: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 20% of 3～1mm, granularity is tafelberg flint clay 40% of 3～1mm, granularity is tafelberg flint clay 10% of 1～0mm, granularity is-200 purpose tafelberg flint claies 5%, Xinjiang andaluzite (granularity is 200 orders) 10% and zirconium powder (granularity is 200 orders) 15%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment 19: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 20% of 3～1mm, granularity is tafelberg flint clay 30% of 3～1mm, granularity is tafelberg flint clay 15% of 1～0mm, granularity is-200 purpose tafelberg flint claies 10%, Xinjiang andaluzite (granularity is 180 orders) 10% and zirconium powder (granularity is 260 orders) 15%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment 20: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 30% of 3～1mm, granularity is tafelberg flint clay 30% of 3～1mm, granularity is tafelberg flint clay 10% of 1～0mm, granularity is-200 purpose tafelberg flint claies 5%, Xinjiang andaluzite (granularity is 240 orders) 10% and zirconium powder (granularity is 280 orders) 15%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment 21: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 20% of 3～1mm, granularity is the Shandong flint clay 30% of 3～1mm, granularity is the Shandong flint clay 10% of 1～0mm, granularity is-200 purpose Shandong flint claies 5%, south african andalusite (granularity is 260 orders) 20% and zirconium powder (granularity is 320 orders) 15%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment 22: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 20% of 3～1mm, granularity is the Shandong flint clay 30% of 3～1mm, granularity is the Shandong flint clay 10% of 1～0mm, granularity is-200 purpose Shandong flint claies 5%, south african andalusite (granularity is 280 orders) 15% and zirconium powder (granularity is 200 orders) 20%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment 23: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 20% of 3～1mm, granularity is the Shandong flint clay 30% of 3～1mm, granularity is the Shandong flint clay 20% of 1～0mm, granularity is-200 purpose Shandong flint claies 5%, and (granularity is 0.5～0mm) 10% and zirconium powder (granularity is 200 orders) 15% to south african andalusite.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment one.
Embodiment 24: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 22% of 3～1mm, granularity is the Qinyang flint clay 32% of 3～1mm, granularity is the Qinyang flint clay 13% of 1～0mm, granularity is-200 purpose Qinyang flint claies 8%, Mei County andaluzite (granularity is 260 orders) 10% and zirconium powder (granularity is 200 orders) 15%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 25: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 25% of 3～1mm, granularity is the Qinyang flint clay 30% of 3～1mm, granularity is the Qinyang flint clay 10% of 1～0mm, granularity is-200 purpose Qinyang flint claies 5%, Mei County andaluzite (granularity is 200 orders) 12% and zirconium powder (granularity is 200 orders) 18%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 26: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 20% of 3～1mm, granularity is the Qinyang flint clay 37% of 3～1mm, granularity is the Qinyang flint clay 10% of 1～0mm, granularity is-200 purpose Qinyang flint claies 6%, and (granularity is 0.5～0mm) 10% and zirconium powder (granularity is 200 orders) 17% to the Mei County andaluzite.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment three.
Embodiment 27: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 15% of 3～1mm, granularity is tafelberg flint clay 25% of 3～1mm, granularity is tafelberg flint clay 13% of 1～0mm, granularity is-200 purpose tafelberg flint claies 6%, and (granularity is 0.5～0mm) 25% and the compound material in Linzhou City (granularity is 180 orders) 16% to Jixi sillimanite.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment three.
Embodiment 28: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 25% of 3～1mm, granularity is tafelberg flint clay 25% of 3～1mm, granularity is tafelberg flint clay 13% of 1～0mm, granularity is-200 purpose tafelberg flint claies 6%, and (granularity is 0.5～0mm) 15% and the compound material in Linzhou City (granularity is 200 orders) 16% to Linkou County's sillimanite.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment three.
Embodiment 29: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 45 mullites 15% of 3～1mm, granularity is tafelberg flint clay 35% of 3～1mm, granularity is tafelberg flint clay 13% of 1～0mm, granularity is-200 purpose tafelberg flint claies 6%, Jixi sillimanite (granularity is 180mm) 15% and the compound material in Linzhou City (granularity is 220 orders) 16%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment four.
Embodiment 30: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 15% of 3～1mm, granularity is the Shandong flint clay 25% of 3～1mm, granularity is the Shandong flint clay 15% of 1～0mm, granularity is-200 purpose Shandong flint claies 8%, Jixi sillimanite (granularity is 200 orders) 15% and the compound material in Linzhou City (granularity is 260 orders) 22%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment four.
The embodiment hentriaconta-: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 18% of 3～1mm, granularity is the Shandong flint clay 28% of 3～1mm, granularity is the Shandong flint clay 17% of 1～0mm, granularity is-200 purpose Shandong flint claies 6%, Jixi sillimanite (granularity is 200 orders) 15% and zirconium powder (granularity is 280 orders) 16%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 32: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 60 mullites 15% of 3～1mm, granularity is the Shandong flint clay 25% of 3～1mm, granularity is the Shandong flint clay 15% of 1～0mm, granularity is-200 purpose Shandong flint claies 8%, Jixi sillimanite (granularity is 200 orders) 15% and zirconium powder (granularity is 260 orders) 22%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 33: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 15% of 3～1mm, granularity is the Qinyang flint clay 25% of 3～1mm, granularity is the Qinyang flint clay 13% of 1～0mm, granularity is-200 purpose Qinyang flint claies 10%, Linkou County's sillimanite (granularity is 200 orders) 21% and zirconium powder (granularity is 200 orders) 16%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Embodiment 34: basic identical with embodiment one, difference is:
Represent with weight percentage, the proportioning raw materials of special type composite low alumina mullite brick of the present invention is: granularity is 70 mullites 22% of 3～1mm, granularity is the Qinyang flint clay 25% of 3～1mm, granularity is the Qinyang flint clay 13% of 1～0mm, granularity is-200 purpose Qinyang flint claies 7%, Linkou County's sillimanite (granularity is 200 orders) 16% and zirconium powder (granularity is 200 orders) 17%.
The preparation method of special type composite low alumina mullite brick of the present invention is identical with embodiment two.
Claims (10)
1, a kind of special type composite low alumina mullite brick, it is characterized in that: represent with weight percentage, containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 10～30% of 3～1mm, granularity is the flint clay 20～40% of 3～1mm, granularity is the flint clay 10～20% of 1～0mm, granularity is-200 purpose flint claies 5～15%, sillimanite or andaluzite 10～30% and additive 15～25%.
2, special type composite low alumina mullite brick according to claim 1, it is characterized in that: containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 10～20% of 3～1mm, granularity is the flint clay 20～30% of 3～1mm, granularity is the flint clay 10～15% of 1～0mm, granularity is-200 purpose flint claies 10～15%, sillimanite or andaluzite 20～30% and additive 20～25%.
3, special type composite low alumina mullite brick according to claim 1, it is characterized in that: containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 20～30% of 3～1mm, granularity is the flint clay 30～40% of 3～1mm, granularity is the flint clay 10～20% of 1～0mm, granularity is-200 purpose flint claies 5～10%, sillimanite or andaluzite 10～20% and additive 15～20%.
4, special type composite low alumina mullite brick according to claim 1, it is characterized in that: containing granularity in the described special type composite low alumina mullite brick raw material is the mullite 15～25% of 3～1mm, granularity is the flint clay 25～35% of 3～1mm, granularity is the flint clay 13～17% of 1～0mm, granularity is-200 purpose flint claies 6～12%, sillimanite or andaluzite 15～25% and additive 16～22%.
5, according to each described special type composite low alumina mullite brick of claim 1～4, it is characterized in that: described mullite is Al
2O
3Content is 45% 45 mullites, Al
2O
3Content is 60% 60 mullites or Al
2O
3Content is 70% 70 mullites; Fe in the described mullite
2O
3≤ 1.2%, R
2O≤0.7%.
6, according to each described special type composite low alumina mullite brick of claim 1～4, it is characterized in that: what described flint clay adopted is tafelberg flint clay, Shandong flint clay or Qinyang flint clay.
7, according to each described special type composite low alumina mullite brick of claim 1～4, it is characterized in that: the granularity of described sillimanite is 180 orders～280 orders or 0.5～0mm, and described sillimanite is Jixi sillimanite or Linkou County's sillimanite; The granularity of described andaluzite is 180 orders～280 orders or 0.5～0mm, and described andaluzite is Xinjiang andaluzite, south african andalusite or Mei County andaluzite.
8, according to each described special type composite low alumina mullite brick of claim 1～4, it is characterized in that: described additive is compound material in Linzhou City or zirconium powder, and the granularity of the compound material in described Linzhou City is 180 orders～280 orders, and the granularity of described zirconium powder is 200～320 orders.
9, a kind of preparation method of each described special type composite low alumina mullite brick of claim 1～4, it is characterized in that: the proportioning raw materials according to each described special type composite low alumina mullite brick of claim 1～4 is prepared burden, prepared materials poured into carry out mixed grind in the wheel roller, the mixed grind time is 10～20 minutes, after mixed grind finishes with mixture ageing mixture 10～15 hours, behind the ageing mixture its material being adopted the friction press extrusion molding is adobe, then adobe is imported and carry out roasting in the tunnel furnace, utilize the waste heat of Cooling Section of Tunnel Kiln to dry in the roasting process earlier, carry out roasting after the oven dry, when reaching 1400～1440 ℃, maturing temperature enters insulating process, through insulation in 12～14h hour, get final product kiln discharge behind the naturally cooling, obtain the special type composite low alumina mullite brick product.
10, the preparation method of special type composite low alumina mullite brick according to claim 9 is characterized in that: the adobe volume density of described extrusion molding is 2.4～2.6g/cm
3The waste heat supply temperature of described Cooling Section of Tunnel Kiln is 110～200 ℃, and drying time is 8～12h, and residual moisture content is＜0.5% in the oven dry back adobe.
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