CN86103155A - Method for manufacturing high-quality high-aluminum refractory material - Google Patents
Method for manufacturing high-quality high-aluminum refractory material Download PDFInfo
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- CN86103155A CN86103155A CN86103155.5A CN86103155A CN86103155A CN 86103155 A CN86103155 A CN 86103155A CN 86103155 A CN86103155 A CN 86103155A CN 86103155 A CN86103155 A CN 86103155A
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000011819 refractory material Substances 0.000 title abstract description 12
- 238000004519 manufacturing process Methods 0.000 title abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 76
- 239000011449 brick Substances 0.000 claims abstract description 68
- 239000004927 clay Substances 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 36
- 239000004568 cement Substances 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 20
- 239000004411 aluminium Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 238000002791 soaking Methods 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 229910052849 andalusite Inorganic materials 0.000 abstract description 8
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000011068 loading method Methods 0.000 abstract description 3
- 239000007767 bonding agent Substances 0.000 abstract 2
- 230000002411 adverse Effects 0.000 abstract 1
- 238000009749 continuous casting Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 229910052742 iron Inorganic materials 0.000 description 9
- 239000000126 substance Substances 0.000 description 9
- 239000002893 slag Substances 0.000 description 8
- 239000012535 impurity Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 6
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 229910052863 mullite Inorganic materials 0.000 description 6
- 238000010304 firing Methods 0.000 description 4
- 229910052851 sillimanite Inorganic materials 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910001570 bauxite Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 235000010755 mineral Nutrition 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011800 void material Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- INJRKJPEYSAMPD-UHFFFAOYSA-N aluminum;silicic acid;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O INJRKJPEYSAMPD-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229910052850 kyanite Inorganic materials 0.000 description 2
- 239000010443 kyanite Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000011822 basic refractory Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 229910001648 diaspore Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000001095 magnesium carbonate Substances 0.000 description 1
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 1
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 1
- 235000014380 magnesium carbonate Nutrition 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Abstract
The invention relates to high-alumina refractory material technology. The high-quality high-aluminum raw material is used as a bonding agent instead of clay, so that the adverse factor of quality reduction caused by the fact that clay is used as the bonding agent in the traditional method for producing the high-aluminum brick can be eliminated, and the raw material is the quality basis of a refractory product. The discovery shows that the Baai high-alumina material in Henan has the excellent characteristics similar to andalusite, and the high-quality high-alumina refractory material with high loading softening point and small reburning shrinkage can be prepared by singly utilizing the Baai high-alumina material (comprising raw material and clinker). The method has simple process. The product is suitable for large blast furnaces, hot blast furnaces, large steel ladles, continuous casting tundishes, electric furnace tops, carbon anode roasting furnaces, cement kilns, glass furnaces and the like.
Description
One, this law relates to the use of the composition of raw materials and the product of high alumina refractory
1, to the creed of alumina content
It is late late that science enters refractory industry department, makes the user in this department or product, produces some creeds unavoidably, for example to the creed of alumina content, thinks " content of aluminum oxide is high more, and use properties is good more ".This is concerning clay brick, and refractoriness and hot strength are improved with the increase of alumina content, generally is correct.
Especially invade under the serious situation when slag, in order to cater to the increase of alumina content, during the sacrificial structure compactness, the execution of this creed, even in the clay brick scope, the consequence that can be drawn to despair.When the people expanded to the creed of " increasing alumina content should be improved " in the high alumina brick scope, consequence will be failed and waste more.
Form by the bauxitic clay of significant proportion and clay many years ago and obtain the many refractory materialss of total alumina content in 50～55% scopes, because their alumina content is more higher than bauxite clay brick, quite cheap on price, attracted the hobby of Iron And Steel Industry, because creep test also was not used as an important factor of quality evalution at that time.This material, especially make the hotblast stove brick, once produced serious actual lesson, these refractory materialss impolite by name " adulterated brick " show the creep resistance characteristic of their contained bonding clays, under heavily stressed situation, total alumina content is higher, almost be incoherent, because existing alumina component almost is isolated the existence, rather than the some of small matrix.
Premium high-alumina refractory not only requires Al
2O
3The content height the more important thing is that to require foreign matter content low, and promptly purity wants high.Al
2O
3Content low though (as about 60%), the high alumina product that foreign matter content is also low is better than Al
2O
3Content high though (as about 80%), the also high product of foreign matter content simultaneously.
Raw material is the quality base of refractory products.Seek Al
2O
3Content is suitable, and the high aluminium material that while purity is higher also brings into play its characteristic fully, is significant to producing premium high-alumina refractory.
2, the brickmaking characteristic of andaluzite
Andaluzite is the high aluminium material that belongs to sillimanite family.Sillimanite family raw material comprises kyanite, sillimanite and andaluzite.Volume change when kyanite and sillimanite make a fire (expansion) is bigger, so to burn till grog be directly brickmaking without giving.It is little to have the volume change (+3.6%) of andaluzite in burning till only, directly brickmaking.In addition, its purity height (the andaluzite ore body generally contains the andaluzite below 10%, reaches high purity after washing, wet screening, flotation, magnetic separation) at high temperature easily generates mullite.Because mullite is determining capabilities of refractory materials and behaviour in service mutually, andaluzite has suitable advantage (seeing Figure of description) at aspects such as high-temperature stability, hot strength (load softening point) and homogeneity.Because it does not burn energy usefulness, has very great economic implications on energy-conservation.The energy consumption of various refractory raw material mature calcined materials is as shown in table 1:
Table 1. raw material calcinating consumption table
The raw material calcining temperature (℃) energy consumption Btu * 10
6/ T
Magnesite 1900～2,000 6～52
Mullite-19
Bauxitic clay (85～90%) 1700～1,800 13
Bauxitic clay (70%) 1,700 9
Bauxitic clay matter kaolin 1650～1,700 8
Kaolin 1500～1,650 7
One diaspore-5
Clay 1,350 4
The andaluzite nothing
Andaluzite is the refractory raw material that does not burn the high-quality province energy consumption of energy usefulness thus.
3, the range of application of andaluzite
(1) hotblast stove
1. 2. 3. burn the top checker brick vertical shaft ball top
(2) blast furnace
1. shaft and bosh 3. 5. trough and the slag runner of the 4. rotary chute of swing type chute of bustle pipe of laying bricks 2.
(3) bag jar
1. jumbo bag jar (slag line) 2. torpedo shape hot metal ladle (bottom and slag line) 3. steel mill's ladle 4. connect the notes tundish
(4) other application
1. 2. electric furnace pushes up 3. 4. carbon anode roasting furnace of Argon nozzle of soaking bell
(5) various industrial special shaped bricks
1. burn chew body 2. the combustion chamber 3. the 4. roasting copper stove of cement kiln (front and back belt of zone of combustion, zone of combustion are brick with alkalescence) 5. laying bricks of some position of glass furnace 6. burn 7. unshape refractory of kiln usefulness support brick that ceramic product uses
(6) unshape refractory
1. the 2. 3. casting model powder of ramming mass of comparable applications of the mould material of hotblast stove, blast furnace and above-listed various uses and spray mixture
In the application of monolith, though fine granules is used for jetting material and moldable.Gather materials and but be used for concrete mould material piece of class and ramming monolith.South african andalusite Randalusite is just made this purposes by promotion.Two kinds of possible purposes of this Coarse Aggregate are the mould material that are used for the ramming mass of iron notch and are used for the low cement content of ladle.Cement and wedding agent department develop in a large number, develop the more effective wedding agent in conjunction with this material.
Below explain the main application of andaluzite and the reason of preferentially using than other refractory materials.
(1) application in the blast funnace hot blast stove
Blast-furnace technique improves follows high hot blast temperature (1200-1300 ℃).The brick on blast funnace hot blast stove top uses high-quality silica brick in recent years.Though the load softening point height of silica brick.But shortcomings such as rate of expansion is big, thermal capacity is low, slag resistance difference are arranged, limited its use at furnace roof high-level structure and top checker brick.The high alumina brick that mullitization is good is because its heat-shock resistance, volume stability, creep resistant deforming, high thermal conductivity and high heat capacity are existing just in broadened application.Andalusite brick is high and do not have a crackle with its precision size degree; Be the production that ideal is suitable for the complicated abnormal shape checker brick.
(2) application in ladle and the hot metal ladle
Annotate applying of technology along with connecting, be inclined to use more excellent refractory materials.Because the problem of void content, volume stability and foreign matter content.Think that it is unsuitable using the material based on bauxitic clay in the ladle lining.Andaluzite, on the other hand, have higher creep resistance and make when heavily burning brickwork joint expand slightly closely, because ventilation property is low, behind hot working face, generate fine and close tendency easily, the infiltration of basic slag is effectively prevented.
The a certain integrated steel mill in South Africa uses the andalusite brick of 55% aluminum oxide and tonerde brick to compare, and its ladle life is increased to 60 times by 25 times.The variation of brick design is adopted different thickness with the ladle sidewall by the position, and ladle life is further brought up to 75 times.
Consider the working conditions of torpedo shape hot metal ladle refractory materials, many iron works are operated with the molten iron of the slag of the low basicity of a large amount of high silicon dioxides and temperature height to 1550 ℃ now, with clay brick or basic refractory, the life-span of refractory materials is prolonged, therefore produce the tendency of using high alumina brick.The at high temperature long-term loading of hot metal ladle so creep resistant deforming is the main requirement performance, requires heat-shock resistance and slag resistance in addition.Andalusite brick has high hot strength.Low porosity, good heat-shock resistance and volume stability, make its can and the brick ratio of 85～90% aluminum oxide.When the fortune molten iron, the top layer is softening to be sealed in addition, and result of use is remarkable.Use charcoal bonded brick better effects if.
(3) application on electric furnace top
South Africa produces andaluzite, but lacks the alumina that burns till, and has obtained suitable success so utilize the fine andaluzite to make High Alumina Bricks for EAF in South Africa.
(4) other purposes
1. the front and back belt of cement rotary kiln sintering zone, because cement rotary kiln imitates and output in order to increase heat, obviously trend is short and diameter is bigger, therefore requires brick more wear-resisting, 50～60%Al
2O
3Andalusite brick successfully adapt to this condition.
2. carbon anode roasting furnace
Because structure loading and aggressiveness chemical environment that refractory materials is subjected to long-term soaking, weighs, because the crude aluminum cost of 15-20% is from anodic production.Therefore most aluminium manufacturer's situ production carbon anode requires their stove to have suitable use achievement with refractory materials and reduces running cost.It is more suitable than previously used clay brick to find once more based on the refractory materials of andaluzite.
3. glass furnace
Andaluzite and mullite are all vast should be as the high-level structure material of glass furnace.Regenerator wall and checker brick.When fusing special glass and increased resistance invasion glass, use mullite, but its purposes is cost an arm and a leg and is limited, furnace crown and high-level structure, especially surpass 1500 ℃ position use mullite in temperature, the position andaluzite that low-temperature section of high-level structure (being lower than 1450 ℃) and atmosphere are clean.
4. municipal administration or industrial incinerator, heat treatment furnace and metallurgical baking oven
The chemerosiveness resistent of material and anti-physical abrasion impel its application to be better than the lower refractory materials of other quality.
Difficulty is extracted in natural red pillar a resource shrinkage, higher-grade, and the market of this material has made way for the substitute of andaluzite on some is used.
But this just good andaluzite substitute of Henan universal love high aluminium material.
Two, existing technology
1, mixes the volume clay in the batching
The conventional formulation of producing high alumina brick is to utilize high alumina to mix volume clay (making wedding agent), because the adding of volume clay not only reduces the alumina content of preparing burden, the content of impurity in the batching (or flux) is increased, and adobe is made a fire shrink to increase.The high alumina brick that the result makes, tissue odds is even, and quality index is low, and is low as load softening point, heavily burn and shrink greatly, so that high alumina brick has the performance of clay brick.
2, lay particular stress on the alumina content of product, ignore the influence of impurity (or flux)
Existing technology biases toward the alumina content (reason by ministerial standard regulation and procurement contract requirement is arranged) of brick here.When unfortunately this province high alumina alumina content is high, the also higher (K especially of general foreign matter content
2O and Na
2The content of O is higher, has to seriously influence).When using the high bauxitic clay brickmaking of this province alumina content, the qualification rate of high alumina brick is descended, the high-temperature behavior that also influences product is also relatively poor, as load softening point low (1520 ℃), heavily burn shrink big.
3, there is the difficulty on quality control and the complete processing in dependence other provinces raw material
Since the bauxitic clay grog that this province alumina content is high because of the foreign matter content height, should not be made the brick (as High Alumina Bricks for EAF and stove fillings) that quality is strict with, therefore must rely on other provinces charging.Fire-resistant factory in Luoyang and our factory that Here it is is located in this province produce High Alumina Bricks for EAF and stove fillings respectively, rely on the reason place that high alumina is advanced in Yangquan, Shanxi for a long time.
When producing first-class high alumina brick with Yangquan one-level high alumina, have the problem of raw material underburnt, mixed level to bring outside the difficulty for artificial pick, size was expanded the reason that the finished product void content increases after also generation was burnt often.The first-class high alumina stove fillings that the our factory produced for Nanjing Mei Shan steelwork headquarters in 84 years the back size occurs burning and expands, and causes the loss of a plurality of kiln bricks (every kiln is adorned more than 100 ton), promptly is a tangible example.In addition, one-level high alumina hardness height damages machinery equipment and liner plate easily.
Three, purpose of the present invention
Be to make the high alumina refractory product of high quality and low cost.
Reason of four, achieving success and condition
The key of this law success is that batching adopts 100% universal love high aluminium material (100% raw material; Or some is raw material, and another partly is a grog).Under the situation of batching, the superiority (the various performances that promptly have similar andaluzite brickmaking) of universal love high aluminium material is fully played without clay.
The universal love raw bauxite has cohesiveness (though its cohesiveness is if clay is not good) can make wedding agent by substitute for clay; Because batching does not have clay, just there is not the detrimentally affect of clay certainly yet.In this case, the characteristic of universal love high aluminium material just can fully play out.Here, " quality of raw material equals the quality of product ".The reason of making quality products almost completely depends on the characteristic of universal love high aluminium material itself.The high-quality of product proves the high-quality of raw material conversely, so the universal love high aluminium material can deserve to be called and is natural premium high-alumina refractory pebbles.Its mineral composition is based on agalmatolite and diaspore, also has a spot of montmorillonite and titaniferous ore (as rutile, anatase octahedrite).
Owing to do not have clay in the batching, therefore can improve the firing temperature (1520 ℃ are incubated 24 hours) of brick greatly.High temperature burns till assurance quality product (physical index such as intensity, void content, load softening point, heavily burning contraction or the like) and better finishes.
Owing to do not have clay in the batching, therefore batching is still possessed the original composition of raw material, purity and characteristic.
Can take the prescription of 50～80% universal love high aluminas and 50～20% universal love raw bauxites.For the brick that quality is strict with, can how use a little grogs to improve the purity (because of burning till after the grog, impurity is easy to naked eyes and recognizes and artificial pick) of raw material.For hollow high alumina brick,, can take the prescription of low clinker content or full raw material in order to reduce cost.Pug is advisable with the prescription of taking 50～60% grogs and 50～40% raw material with the formability of friction press.
For the associativity and the green strength that improve pug, batching can add the lignosulfite of 1.5% proportion 1.17.
Because batching is simple, so the useless base or the useless brick that occur in producing, can circulate and repeat to do batching or grog use, and not influence the quality of batching or product.
Raw material is possessed the brickmaking characteristic of similar andaluzite:
1. material chemical component and purity are close with andaluzite
Press the chemical ingredients (%) of grog calculating and the contrast of south african andalusite, as shown in table 2:
Table 2 material chemical component synopsis
Universal love high alumina chemical ingredients is a calculated value in the table, gets by calculating after the corresponding raw material chemical analysis removal igloss.Chemical ingredients and andaluzite by the visible universal love high alumina of table are close.The purity height of universal love high aluminium material (being that impurity or flux content are low) is one of its natural characteristic.In order to guarantee the purity of raw material, must be noted that artificial pick.Artificial pick is easier to carry out in order to make, and can use grog, because burn till after the grog, impurity exposes from outward appearance, is convenient to the naked eyes identification, artificial rejecting totally.
2. raw ore (raw material) volume change of making a fire is little
Equal zero through the volume change of 1430 ℃ of insulations after 24 hours, raw material burn till directly brickmaking of grog without giving.Linear shrinkage and the goods index of the adobe of different ingredients under different firing temperatures is as shown in table 3 during brickmaking.
The apparent porosity of raw material, volume density and water-intake rate are as shown in table 4.
3. brickmaking Main physical index height
Can be with Yangquan one-level high alumina brickmaking index contrast and not slightly time, as shown in table 5.
Table 4 raw material physicals table
Title firing temperature ℃ apparent porosity % BDg/cm
3Water-intake rate %
Universal love raw bauxite-2.5 2.93 0.85
Universal love high alumina 1380 insulations 6 hours 9.3 2.58 3.58
" " " 1430 insulations 24 hours 8.4 2.58 3.24
By table 5 as seen, the high alumina brick of universal love high aluminium material system removes Al
2O
3Outside content was done to consider in addition, all the other every indexs almost all can satisfy the requirement of electric furnace top high alumina brick, blast furnace and the hotblast stove high alumina brick of Ministry of Metallurgical Industry's ministerial standard regulation.Its Main physical index, as load softening point, it is all better heavily to burn linear shrinkage and thermostability, and performance and andalusite brick are similar, and the mineral composition of brick is that host is a mullite, is cristobalite and corundum secondly, a spot of rutile.
The high aluminium ore of universal love belongs to " hard " high alumina, be can be with the fire-resistant resource of the direct brickmaking of raw material, one team found out in 83 years through Henan Province's metallurgical geology, think 765.5 ten thousand tons of the evaluation geological prospecting total reservess of universal love seedling Cen clay pit (just comprise at present profound Tan Miao ore deposit that the people adopt), wherein the hard high alumina is 3,880,000 tons, 364.5 ten thousand tons of flint clays, the chemical ingredients and the reserves in ore deposit, mausoleum Cen clay pit (Al) are as shown in table 6.
Mountain range, table 6 mausoleum clay pit (Al
3) chemical ingredients and the reserves table in ore deposit
Table 6 (Al
3) the impurity average content (%) of 18 samples in ore deposit is MgO 0.292, TiO
21.348, Na
2O 0.11, K
2O 0.243, and CaO 0.32, this shows that the raw ore foreign matter content is low, and promptly the purity height is a high-quality mineral deposit.Be worth further exploration, development and utilization.
Another ore deposit of universal love is the packway clay pit, and its prediction total reserves is 7,630,000 tons, and wherein the hard high alumina is 2,550,000 tons, 5,080,000 tons of flint clays, and the prediction reserves of packway clay pit are as shown in table 7:
Table 7 packway clay pit is surveyed the reserves table
Some these class hard high alumina and flint clays are also arranged near Qinyang and Jiaozhuo in addition.
As seen by above-mentioned, universal love hard high alumina has the various brickmaking performances of very similar andaluzite, can be used as the good substitute of andaluzite, and aboundresources.
Five, this law has tangible advantage compared with the prior art.
1, the problem of former technology existence
When (1) using the universal love high alumina, owing to add the volume clay in the batching, so that raw materials used characteristic (superiority) buried by the performance of clay, so that honest material system do not become brick, causes the waste of honest material or useful resources.The our factory had produced 7000 tons of third-class high alumina ladle bricks to Wuhan Iron and Steel Plant in 78 years.Cause of poor qualityly for this reason, work-ing life is low, and Wuhan Iron and Steel Plant is reluctant to want, and causes heavy economic losses to the our factory at that time.
(2) use the high high alumina of alumina content, hardness is big, the apparatus processing difficulty, and equipment and liner plate are fragile, yield poorly.
(3) use high this province high alumina of alumina content, because the higher raw materials quality that promptly influenced of its foreign matter content descends.The certain system of bad raw material does not become good product, and qualification rate is low during production, is not durable, and causes bigger waste on the contrary.
(4) except existing outside the raw material quality control problems such as (as living selecting of burning, what mixed level was expected separate), also there is the problem of " can not gather materials on the spot " in the shortcoming of use Yangquan, Shanxi one-level high alumina.At the year ends 84, this station-service Yangquan one-level high alumina produces stove fillings for Nanjing Mei Shan iron and steel headquarters, causes several kiln bricks burning back sizes to expand because of raw material mixes level, and can not produce, cause very big waste, force to such an extent that the user agrees the amendment of contract at last, adopt this law production.
2, the advantage of this law
(1) fine raw material, good technology is brought the fine product.The main quality index of product as load softening point, is heavily burnt linear shrinkage, and thermostability etc. are all no less than the corresponding index of Yangquan one-level high alumina brickmaking, as described above.
(2) universal love high aluminium material (comprising raw material and grog) hardness is little, and apparatus processing is easy, can make the purposes for andaluzite, the resource abundance, and purposes is vast.
(3) production technique is easy, and production cost is low, the economic benefit height.
Gave economic benefit that 700 tons of second-class high alumina bricks of Baosteel seamless steel tubing mill process furnace production obtain more than 240,000 yuan with this law in 84 years; Produced economic benefit that 3100 tons of blast funnace hot blast stove high alumina bricks obtain more than 960,000 yuan for Nanjing Mei Shan steelwork headquarters with this law in 85 years.
The universal love high aluminium material is mixed the pug of clay brick, the quality of clay brick is significantly improved, for example the our factory gave the process furnace clay brick that the carbon anode roasting furnace of aluminium manufacturers' productions such as 503 factories, 205 factories is used clay brick and produced to Baosteel in 84 years, all be to improve and stabilised quality, earn a profit by mixing the universal love high alumina.
Produce unshape refractory in addition, as high alumina castable, moldable so that refractory mortar in order to ensure the quality of products, also all be unable to do without use universal love high alumina.
Six, method carried out therewith
Choose fine and close hard, the universal love raw bauxite piece of dark-grey black and beige or the uniform universal love high alumina of flaxen color and luster piece, Jiaozhuo clay and grog, respectively through artificial pick, remove iron sheet or other impurity, after garden conic crusher and the broken pulverizing of ball mill, can produce by table 8 prescription.
Prescription adds the lignosulfite 1.5～2% of proportion 1.17 and makes wedding agent.Pug mixes through edge runner-wet mill, be pressed into adobe through 300 tons of friction presses then, adobe volume density (BD) must not be lower than numerical value shown in the table, and adobe is loaded on tunnel furnace after tunnel moisture eliminator drying or down-draft kiln burns till, and firing temperature and soaking time are as shown in Table.
Claims (5)
1, the traditional proportioning method of high alumina brick is to use Al
2O
3The high alumina that content is high is made wedding agent with clay.This law feature is to utilize the natural purity height of the Henan universal love high aluminium material of being found (comprising raw material and grog), high-quality and do not burn can usefulness characteristic, make wedding agent with its raw material substitute for clay, adobe is burnt till through high temperature, produces the load softening point height and heavily burns the premium high-alumina brick that receipts are reduced into feature simultaneously.
2, the premium high-alumina brick of making can be used for blast furnace, stove fillings, big ladle, big hot metal ladle, connects and annotate front and back belt, glass furnace regenerator furnace wall and checker brick of tundish, electric furnace top, soaking bell, carbon anode roasting furnace, cement kiln zone of combustion or the like.
3, the characteristic of universal love high aluminium material according to claim 1 is copied brick-making formula, can make Al
2O
3The unshape refractory of content about 60%.
4, the unshape refractory of claim 3 (as mould material, ramming mass and spray mixture) can be made the comparable applications of claim 2.
5, the characteristic of universal love high aluminium material according to claim 1 to the clay brick batching an amount of universal love high aluminium material of admixture (mainly referring to raw material) fine powder, can improve the quality and the performance of clay brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103155 CN1029117C (en) | 1986-04-30 | 1986-04-30 | Method of making premium high-alumina refractory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86103155 CN1029117C (en) | 1986-04-30 | 1986-04-30 | Method of making premium high-alumina refractory |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86103155A true CN86103155A (en) | 1987-12-02 |
| CN1029117C CN1029117C (en) | 1995-06-28 |
Family
ID=4801971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86103155 Expired - Fee Related CN1029117C (en) | 1986-04-30 | 1986-04-30 | Method of making premium high-alumina refractory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1029117C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101913891A (en) * | 2010-09-02 | 2010-12-15 | 河南鑫诚耐火材料股份有限公司 | Refractory bricks for flue walls of carbon anode baking furnaces and preparation method thereof |
| CN101602610B (en) * | 2009-04-17 | 2012-02-01 | 陈红良 | Raw material formulation for furnace cover of cement-less entire electric furnace |
| CN103253943A (en) * | 2013-04-17 | 2013-08-21 | 孝义市和中兴矿产有限公司 | Sintering method for shaped product of fire resistant material by utilizing alumina red mud as binding agent |
| CN108373337A (en) * | 2018-03-05 | 2018-08-07 | 北京利尔高温材料股份有限公司 | A kind of wear-resisting gunning refractory of blast furnace lining |
| CN111908903A (en) * | 2020-06-16 | 2020-11-10 | 浙江攀盛冶金材料有限公司 | Aluminum-magnesium ramming mass |
-
1986
- 1986-04-30 CN CN 86103155 patent/CN1029117C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101602610B (en) * | 2009-04-17 | 2012-02-01 | 陈红良 | Raw material formulation for furnace cover of cement-less entire electric furnace |
| CN101913891A (en) * | 2010-09-02 | 2010-12-15 | 河南鑫诚耐火材料股份有限公司 | Refractory bricks for flue walls of carbon anode baking furnaces and preparation method thereof |
| CN101913891B (en) * | 2010-09-02 | 2012-06-20 | 河南鑫诚耐火材料股份有限公司 | Refractory bricks for flue walls of carbon anode baking furnaces and preparation method thereof |
| CN103253943A (en) * | 2013-04-17 | 2013-08-21 | 孝义市和中兴矿产有限公司 | Sintering method for shaped product of fire resistant material by utilizing alumina red mud as binding agent |
| CN108373337A (en) * | 2018-03-05 | 2018-08-07 | 北京利尔高温材料股份有限公司 | A kind of wear-resisting gunning refractory of blast furnace lining |
| CN111908903A (en) * | 2020-06-16 | 2020-11-10 | 浙江攀盛冶金材料有限公司 | Aluminum-magnesium ramming mass |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1029117C (en) | 1995-06-28 |
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