What does Mo Laishi firebrick have to manufacture technology recipe and shape is the technology how?
Mo Laishi brick is a aluminium is qualitative kind tall, it is the silicon aluminium that gives priority to brilliant photograph with Molaishi fasten refractory products, general alumina content is between 60%-75% . According to making technology cent is agglomeration Mo Laishi brick and electric frit Mo Laishi brick.
One, function of Mo Laishi brick
1, fireproof degree tall, loading bate temperature is high.
2, rate of high temperature creep is low.
3, heatproof shake performance is good.
4, acid-proof sex is slaggy erode.
2, Mo Laishi brick uses range
Mo Laishi brick is commonly used at hot-blast stove of puddling of high temperature of 1200 ℃ above, torpedo tank car suffers molten iron to pound line of place, broken bits, the roof of furnace of steel-making electric arc, furnace of kiln of potter course of study, structure of the regenerator arch of vitreous frit kiln, upside, liner of cement, rotary kiln.
1, low creep Mo Laishi brick
It is raw material in order to synthesize Mo Laishi grog, fancy tall aluminous aluminous grog, add a share additionally high pure quartz and additive, can make low creep Mo Laishi brick.
Raw material classics is broken to granuality 3mm hind, reserve via dividing iron, screening hind. Is stock recipe as follows: ? ?4% of handkerchief of word , ji earth grog 20% , quartz 6% , in all crocus 40% . Stock is in mix grind undertake mixing practice in machine. Join grain makings first, dry bond is joined to mix 3min after mixing 1min, rejoin fine pink. Always mix experienced time for 10? 12min. 24h of the classics after pug mixes practice expects tiredly, pug moisture with 5? 7% advisable. Pug granuality is comprised as follows: ≫3mm, 5%;3? 1mm, 35~40%;1? 0.5mm, 5? 10%;0.5? 0.1mm, 6? 10%;0.1mm, > 40% . 3mm, 5%;3? 1mm, 35~40%;1? 0.5mm, 5? 10%;0.5? 0.1mm, 6? 10%;0.1mm, > 40% . Shape to control bricky machine in 300t attrition aspirant travel. The bulk density of base substrate should be controlled in 2.70g/cm3 above. Is base substrate in 50? Below 110 ℃ dry, dry time 16h. Dry hind moisture of base substrate remains should is less than 0.5% . The * high fever of goods is 1600 ℃ into temperature, heat preservation 16h. The physical index of goods is as follows: Is apparent pore led 19? 21%; bulk density 2.55? 2.60g/cm3; compression intensity 69? 116MPa;1450°C, 50h pressing creep is led 0.12% .
2, low creep agglomerationMo Laishi brick
Make aggregate with andalusite, silicon line stone makes the grain intermediate, the collective fine crocus of pink of aluminium powder of oxidation of pink of silicon line stone, aluminous pink, industry, clay makes matrix makings can make agglomeration Mo Laishi brick. Its raw material deserves to fall for instance: Aggregate: Intermediate grain: Fine pink =50:12:38. Compound bond is added in burden, with 260t attrition the machine that press a brick shapes. Drying of base substrate classics is less than to leftover moisture 1% , in loading blaze kiln, undertake firing. Firing temperature is 1490 ℃ , heat preservation 19h, the porosity of goods can be amounted to 17.15% , bulk density 2.53g/cm3, 136.5MPa of intensity of normal temperature compression, loading bate temperature 1627 ℃ . 1450 ℃ , 50h creep rate can be amounted to 0.87% . If firing temperature is 1450 ℃ , heat preservation time is lengthened to 26h, also can achieve the goal of agglomeration. But, the products index with physical function more firing than 1490 ℃ index is a few lower. For example 1450 ℃ , 50h creep rate is 0.98% .
3, agglomeration Mo Laishi brick
The firing temperature of Mo Laishi brick is in agglomeration normally 1600 ℃ above. So high firing temperature makes agglomeration not comes stone brick be hard to mass production. Use active SiO? active, is right amount active SiO joined in burden? , can make agglomerationMo Laishi brickIn 1550 ℃ agglomeration. electric dissolve Molaishi makes the grain of 4mm, electric frit corundum makes the fine noodles or vermicelli made from bean or sweet potato starch of 0.088mm, of active SiO2 fineness 00076mm. Of stock deserve to fall for instance: Grain of electric frit Mo Laishi expects 60% , fine pink of electric frit corundum 36% , active SiO? Fine pink 4% . After burden classics mixes practice, go up in machine of attrition pressing brick shape. Base substrate classics after 24h of 110 ℃ drying, fall at 1550 ℃ firing. This kind of agglomeration not comes the physical index of stone brick is as follows: Apparent pore is led 20.88% , bulk density 2.61g/cm? , 84.4MPa of intensity of normal temperature compression, 1550 ℃ , creep of 50h high temperature is led 0.796% .
4, brick of Mo Laishi corundum
With synthesizing Molaishi and electric frit artificially Baigang jade is raw material, it is bond with Suzhou earth, can make electric roof use brick of Mo Laishi corundum. Mo Laishi of will artificial synthesis is broken make aggregate to 4mm, frit white corundum grinds report to make fine noodles or vermicelli made from bean or sweet potato starch to 0.074mm, the vibration of Suzhou earth classics after stoving grinds mill to make bond to 0.5mm. Burden scale limits is as follows: Synthesize Molaishi 55? 65% , electric frit white corundum 25? 30% , suzhou earth 8? 10% . Batch is used wet grind machine mix. Mix Lian Shixian to add grain to expect, mix practice 1? 2min, join bond to mix practice next 2? 3min, is fine pink joined to mix practice after * 3? 5min, always mix left and right sides of experienced time 10min. Its grain is comprised as follows: ≫2mm17.9? 20.2% , 2? 1mm14.3% ? 18.7% , 1? 0.5mm3.9? 5.8% , 0.5? 0.1mm13.1? 15.9% , 0.1mm 42.3? 44.7% , moisture 4.6? 5.4%2mm17.9? 20.2% , 2? 1mm14.3% ? 18.7% , 1? 0.5mm3.9? 5.8% , 0.5? 0.1mm13.1? 15.9% , 0.1mm 42.3? 44.7% , moisture 4.6? 5.4% .
Base substrate presses bricky machine to shape with 300t attrition, base substrate density is 2.70g/cm3. Base substrate undertakes inside channel desiccator dry. Entrance temperature 40? 50 ℃ , temperature of dry of * senior officer 130 ℃ , dry time 48h, base substrate moisture is more than 1.5% . Goods is firing inside channel kiln, firing temperature is 1550 ℃ , 10h of heat preservation time. The manage of goods changes index to be as follows: Al? O? 73.06% , siO? 24.10% , apparent pore is led 19.9% , bulk density 2.55g/cm3, 81.7MPa of intensity of normal temperature compression, 1550 ℃ , the heavy change that burn a line leads 3h - 0.11% , loading bate begins temperature 1710 ℃ .
5, Molaishi - brick of silicon line stone
Be able to bear or endure with Zhengzhou for aggregate, with silicon line stone, tall aluminous alumina, union clay is fine pink, it is bond with waste liquid of sulphurous acid pulp, can make Molaishi stone of one silicon line pledges kiln of pottery and porcelain is provided. Its raw material deserves to fall for instance: The grain of anxious lapidary grog of 3mm 55% , clay of silicon line stone, tall aluminous aluminous grog, union in all mill pink (0.088mm)45%(among them: Silicon line stone 10% , tall aluminium is aluminous 22% , argillaceous 13%) . Extra water 3% , waste liquid of sulphurous acid pulp (density is 1.2g/cm3)1% . Pug granuality is comprised (%):≫5mm, 3;5? 2mm, 25;2? 0.5mm, 24;0.5? 0.088mm, 9.5;0.088mm, 38.5; moisture 9. Pug confuses order of experienced feed in raw material: Grain makings, bond and water, mix fine pink. Mix experienced time 10min. In blaze kiln is falling after base substrate classics is dry, fall at 1370 ℃ firing. 5mm, 3;5? 2mm, 25;2? 0.5mm, 24;0.5? 0.088mm, 9.5;0.088mm, 38.5; moisture 9. Pug confuses order of experienced feed in raw material: Grain makings, bond and water, mix fine pink. Mix experienced time 10min. In blaze kiln is falling after base substrate classics is dry, fall at 1370 ℃ firing.
The manage of goods changes index to be as follows: Al? O? 51.9% , siO? 43.9% , apparent pore is led 23% , bulk density 2.27g/cm? , compression intensity 38.2MPa, loading bate temperature 1520 ℃ , thermal shock stability (1100 ℃ , water-cooling) > 20. Mo Laishi - products of silicon line rock makes ejector plate brick in kiln of ejector plate of pottery and porcelain, use changeless form 25 times or so, without wear away.
6, brick of silicon line stone
It is aggregate in order to synthesize grog of earth of Molaishi, tall aluminous Ji, Jiao Baoshi grog, with chicken silicon line stone is matrix on the west, use the technological equipment that produces argillaceous brick, can make brick of silicon line stone. Of raw material deserve to fall for instance: Silicon line stone 45? 50% , mo Laishi + Jiao Baoshi + is the tall aluminium such as Ⅱ aluminous 35? 50% , the earth of tall aluminous Ji such as Ⅰ 5? 10% , clay 5? 10% . Above raw material undertakes metage by burden scale and be in mix grind undertake mixing practice in machine. Join grain makings first, rejoin bond, fine white is joined after mixing , mix experienced 10min, is pug moisture control in 3? 3.5% .
Brick of silicon line stone presses bricky machine to shape with the attrition of 300t above, is control of base substrate density in 2.53g/cm? Above. The base substrate after shaping undertakes in channel oast dry. Oast inlet temperature 40? 50 ℃ , outlet temperature 150? 200 drying 8? 10h, leftover moisture is more than 0.5% . Of brick of silicon line stone firing temperature is 1350? 1400 ℃ , heat preservation 8? 10h. The main reason of brick of silicon line stone changes index to be as follows: Al? O? 61.45%;SiO? Does 35.15%; apparent pore lead 2.58g/cm of 15.3%; bulk density? ℃ of 123.4MPa;1500 of intensity of compression of; normal temperature, 2h burns a line to change again + 0.17%;1450 ℃ , does 0.72%; of 50h creep rate fight thermal shock sex (1100 ℃ ? Water-cooling) be more than 15 times.
7, silicon line stone rotates canal
Rotate the canal is the main job part that glass provides the opportunity that pull a tube. Its work requirement is slashing, want those who endure the vitreous fluid of 1150 ℃ to erode not only, erode, and still ask to have the job in rotation. Accordingly, requirement goods is had stronger be able to bear or endure vitreous fluid aggressivity. With Shandong fancy Jiao Baoshi is aggregate, with chicken it is OK that clay of knag of silicon line Shi Hezi is fine pink on the west stone of production silicon line rotates character canal. Its burden falls for instance: Jiao Baoshi 60? 65% , silicon line stone 20? 30% , clay 5? 10% , waste liquid of pulp of adscititious sulphurous acid 1.5% , water 4% . Pug is in wet grind undertake mixing practice in machine, order of feed in raw material is: Stone of line of waste liquid of pulp of Jiao Baoshi, water, sulphurous acid, clay, silicon. Mix experienced time 10min. Pug granuality (%): ? ?.84mm13? 18, 0.84? 0.50mm15? 20, 0.5? 0.08mm20? 25, 0.08mm40, moisture 6.
Use wind hammer to pound dozen shape, leeway of wind hammer job 0.39? 0.49MPa. After base substrate classics is dry, leftover moisture 1% . Goods is firing inside kiln pouring blaze, * high fever becomes temperature 1370 ℃ , 48h of heat preservation time. The manage of goods changes index to be as follows: Al2O349% , siO247% , apparent pore is led 15.7% , loading bate temperature 1550 ℃ , 149.7MPa of intensity of normal temperature compression. After goods classics burnishs, can throw use.
8, bowl of metal of silicon line rock
The main job component that makings bowl is the vitreous current outcome that bottom of settling tank of vitreous frit kiln produces container glass service with a future life. Concentrate of stone of the line that use silicon and clay make raw material can create bowl of metal of silicon line rock. Raw material deserves to fall for instance: Concentrate of silicon line stone 3? 0.5mm 30? 40% , 0.5? 0.088mm 20? 30% , 0.088mm 20? 30%; clay 8? 12% , waste liquid of pulp of adscititious sulphurous acid 3% . Batch mixing is in mix grind undertake in machine. After deserving to mix 1min than joining grain makings to work first by pug, join bond to mix experienced 3min, does rejoin fine pink mix practice 4? 6min, is pug moisture control in 3? 3.5% . Base substrate shapes below the pressure of 14.7MPa, in 40? Below the temperature of 60 ℃ dry 3? 4d, in 1450 ℃ firing. The main physics index of goods is as follows: Apparent pore is led 22.5% , bulk density 2.07g/cm? , 83MPa of intensity of normal temperature compression, loading bate temperature 1320 ℃ , thermal shock stability (1100 ℃ , water-cooling) 18.
9, ball of silicon line stone
With tall aluminous aluminous grog, chicken concentrate of silicon line stone is raw material on the west, soft qualitative clay and powder of sulphurous acid pulp can make blast furnace hot-blast stove use ball of simple stuff of silicon line stone for bond. Raw material deserves to fall for instance: Grain of tall aluminous aluminous grog, 0.9? Fine pink of grog of alumina of 0.5mm 55%; tall aluminium, shi Xifen of line of 0.074mm 15%; silicon, 0.045mm 20%; joins argillaceous fine white, powder of 0.074mm 10%; adscititious pulp, 0.28mm 5% .
Is fine pink of fine pink of silicon line stone, will tall aluminous aluminous grog, clay fine pink pressed deserve to be ground than grinding the Communist Party of China at vibration 10? 15min reserves. Mix practice to be in wet grind undertake in machine. Join grog of earth of tall aluminous Ji first, rejoin is right amount water, mix practice 2? Powder of pulp of the rejoin after 3min, join after the 1min that mix practice mix fine pink, mix practice in all 7? 10min, is moisture control in 5? 17% . Is the base substrate after shaping in 60? Below the temperature of 80 ℃ dry 8? 10h, make leftover water is divided 2% . Of goods firing temperature is 1500 ℃ , heat preservation 10? 12h. The main physics index of goods: Apparent pore is led 25.41% , bulk density 2.45g/cm? , 54MPa of intensity of normal temperature compression, loading bate temperature 1450 ℃ , thermal shock stability 1100 ℃ water-cooling) > 30.
10, andalusite brick
It is aggregate with andalusite, with stone of line of tall aluminous aluminous grog, silicon and clay fine pink is matrix, can make the andalusite brick that canister of torpedo molten iron uses. Classics of Jiang Gongzhu stone is broken, after classificationing, reserve. Will tall aluminous aluminous grog and clay mix mill to reserve in oscillatory ball mill. Its raw material deserves to fall for instance: Andalusite 50? 55% , silicon line stone 15? 25% , is tall aluminium aluminous 15? 20% , clay 5? 10% . With annulus grind machine undertake mixing practice, when mixing practice, join first big grain, medium grain, dry mix 2? 3min, add bond next, in all crocus, always mix experienced time 15min.
The grain group of pug becomes: 3? 2mm 25% , 2? 1mm 15% , 1? 0.5mm 6.5% , 0.5? 0.088mm 10.5% , 0.088mm 43% . After pug classics 25h expects tiredly, with 630t attrition presses bricky machine to shape, adobe density 2.65? 2.75g/cm? . It is after goods classics is dry in channel kiln firing, * high fever becomes temperature 1350 ℃ , heat preservation 8h. The main physics index of goods: Bulk density 2.48g/cm? , apparent pore is led 13.7% , 110.8MPa of intensity of normal temperature compression, loading bate temperature 1560 ℃ , creep is led (1350 ℃ , 50h)15% , the heavy change that burn a line (1450 ℃ , 2h)0.07% , thermal shock stability (1100 ℃ water-cooling) > 30.
11, silicon line stone brick of one carborundum refractory slab
With carborundum arenaceous for aggregate, it is matrix with silicon line stone and clay, it is bond with waste liquid of sulphurous acid pulp, can make silicon line stone brick of one carborundum refractory slab, its recipe is as follows: Carborundum (one class) 50? 65% , silicon line stone 15? 35% , clay 10? 15% . Pug granuality comprises as follows: 3? 2mm12? 20% , 2? 1mm15? 24% , 1? 0.5mm10? 12% , 0.5~0.088mm20? 25% , 0.088mm30? 35% . Pug is in mix grind undertake mixing practice in machine, order of feed in raw material: Add carborundum grain first, add waste liquid of sulphurous acid pulp again, mix even hind add the fine pink that has mixed again. Continue to mix experienced 10min to be able to go out makings, should be pug moisture controlled in 3? 4% .
Shaping is undertake on 500t hydraulic press, base substrate density not under 2.65g/cm? . Base substrate classics 40 ℃ dry 3d, leftover moisture should is less than 1% . Firing can undertake inside kiln pouring blaze, firing temperature 1430 ℃ , heat preservation time 8? 16h, always firing time 90h. Silicon line stone - index of physics of brick of carborundum refractory slab is as follows: Apparent pore is led 21% , bulk density 2.3? 2.35g/cm? , compression intensity > 35.2MPa, loading bate temperature > 1520 ℃ , thermal shock stability (1100 ℃ , water-cooling) > 8. 35.2MPa, loading bate temperature > 1520 ℃ , thermal shock stability (1100 ℃ , water-cooling) > 8. 1520 ℃ , thermal shock stability (1100 ℃ , water-cooling) > 8. This goods can use as firing the brick of refractory slab of kiln of channel of pottery and porcelain that temperature is 1370 ℃ . Stability of this goods thermal conductivity, thermal shock is good, be able to bear or endure oxidation, manufacturing technology is simple, cost is low, brick of replaceable tall aluminous qualitative refractory slab.
Brick of Mo Laishi heat preservation - Mo Laishi condole hangs a brick - use of product of brick of Mo Laishi anchorage solid:
Mo Laishi condole carries a brick on the head, whiteness is tall, air hole is arranged even, fight lose compression strength tall, the liner lift up or let down with a rope that can be used at furnace of each industry kiln directly supports.
Brick of Mo Laishi heat preservation - Mo Laishi condole hangs a brick - brick of Mo Laishi anchorage solid suitable scope:
Apply at all sorts of industrial kiln furnace, like kiln of kiln of type of furnace of bell furnace, heating furnace, splitting decomposition, heat treatment furnace, shuttle, channel, roller the condole of kiln of kiln, enamel kiln, pottery and porcelain supports and wall body and adiabatic liner material.
Brick of Mo Laishi heat preservation - Mo Laishi condole hangs a brick - trade of building materials of brick of Mo Laishi anchorage solid is large furnace of roller path kiln, trade of daily expense pottery and porcelain is large furnace of furnace of channel kiln furnace, shuttle type kiln, ejector plate kiln, kiln of channel of product line of large red brick, kiln of fireproof material channel, furnace of shuttle type kiln.
Brick of Mo Laishi heat preservation - Mo Laishi condole hangs a brick - brick of Mo Laishi anchorage solid item characteristics:
1. low heat conduction is led, have effect of very good adiabatic heat preservation.
Frit of 2. low heat, low heat conduction is led, mo Laishi series pledges gently the heat energy with adiabatic brick very few save up, energy-saving in intermittent operation effect is distinct;
3. matter content is low have the oxide content such as alkali metal of low-down iron box, fireproof degree tall; The higher volume that contain aluminium makes its still maintain good performance below reducing atmosphere;
Intensity of compression of 4. hot condition is high;
5. exterior size is exact, accelerate build by laying bricks or stones to build career, reduce fireproof mud to use an amount, assured the intensity of body of build by laying bricks or stones and stability, prolong the life of liner thereby;
3, firebrick manage changes Molaishi index:
|
Project |
RM-35 |
RM-30 |
RM-25 |
|
|
Al 2 O3 , % ≥ |
70 |
65 |
60 |
|
|
Fe 2 O3 , % ≤ |
0.8 |
1.2 |
1.5 |
|
|
TiO 2 , % ≤ |
0.5 |
0.6 |
- |
|
|
K 2 O+Na2 O, % ≤ |
0.5 |
0.6 |
0.6 |
|
|
Apparent pore rate, % ≤ |
19 |
19 |
19 |
|
|
Bulk density, g/cm 3 ≥ |
2.65 |
2.6 |
2.5 |
|
|
Intensity of normal temperature compression, mpa ≥ |
75 |
70 |
60 |
|
|
Weigh ratio of the change that burn a line, (1500 ℃ X3h) % |
- 0.3 |
- 0.3 |
- 0.3 |
|
|
Temperature of 0.2Mpa loading bate, ℃ |
1650 |
1600 |
1550 |
|
|
Thermal shock stability, second |
35 |
30 |
25 |
|
|
Linear expansion rate, (20-1000 ℃ ) % |
0.8 |
0.7 |
0.7 |
|
|
Creep rate, % |
Temperature condition ℃ |
1450 |
1400 |
1350 |
|
0-50h |
0.6 |
0.6 |
0.6 |
|
|
20-50h |
0.2 |
0.2 |
0.2 |
|
|
Utility |
Sirocco conduit |
|||
4, Mo Laishi brick makes a method
1, agglomeration Mo Laishi brick is grain to expect with agglomeration Mo Laishi, fine pink is synthetic Mo Laishi, join a few clay or unripe alumina to make bond, via shaping, firing and make. AgglomerationMo Laishi brickWith makings deserve to compare: Stone of line of 5-40% of agglomeration Mo Laishi, silicon 5? 30% , andalusite 5? 30% , board shape corundum 5? 30% , tenacity accretion 4? 15% with combinative clay 3? 10% make.
2, electric frit Mo Laishi brick has burden with tall alumina or industrial alumina, silica or saggar, in the melt inside electric arc furnace, note again irrigate shape reach anneal to be made.
5, the quality that affects Mo Laishi firebrick and structural element
1, the scale of Al2O3 of raw material of Mo Laishi brick and SiO2.
2, the sort of the impurity in raw material and content.
3, Molaishi is the granuality of raw material, firing temperature and heat preservation time.
6, Mo Laishi brick uses a note
1, prohibit be being contacted with basic material below high temperature environment.
2, unfavorable use below the environment of tall vapor content.
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