Heating furnace is in the action in metallurgical industry is all in all, it is stock or workpiece (it is a metal commonly) heat to be become to rolling forging the equipment of temperature (industrial furnace) . Heating furnace application pervades the domain of a lot of industry such as oil, chemical industry, metallurgy, mechanical, heat treatment. The build by laying bricks or stones of heating furnace builds material to had taken so old change, had gone to centre of gravity from firebrick product move pouring makings on this kind of adventitious fireproof material, this is the one great progress that heating furnace develops.
Adventitious fireproof data is used on heating furnace, because this kind of fireproof material has a lot of advantages,be:
Construction is convenient, avoided the brick in construction much problem;
Construction method masters easily, do not need technical skilled worker, the Yang Chen when construction is little;
Be able to bear or endure flake the gender is good, can use at operating the place with slashing condition;
The part of body of heater with complex form, if give makings mouth, roof next pressing place, when using a brick easy bad, with but plastic whole pounds the life when making longer.
Below, let us come to a few commonly used kinds understand heating furnace pouring material product:
1, argillaceous union is pouring makings
Argillaceous union is pouring the applied development of makings is very rapid, this kind pouring expect by fireproof aggregate, fine pink, unripe clay, chemistry dispersive agent is mixed hurried coagulates agent composition, but pouring construction, have already but the characteristic of plastic high temperature sex, avoided the flaw of construction inconvenience again, aborning got applied extensively.
Be united in wedlock with clay pouring expect average service life is built heating furnace 3, 5 years. Boiler setting is the spot mostly pouring, roof has the spot pouring or prefabricated component. The prefab clay band that uses new-style and stretch section to hang anchorage firm system is pouring heating furnace roof, the construction is reasonable, construction is handy, performance is good, special agree with big span (L ＞ 10m) heating furnace roof is used.
2, pledge gently pouring makings
Pledge gently pouring the occurrence of makings is to lower the hear rate of heating furnace. Use at making up to pledge gently normally pouring the light qualitative aggregate of makings has diatomite, vermiculite, pearlite to wait. These material melting point are inferior, make adiabatic insulation material commonly. Grog of existing light qualitative clay can be used at the temperature limits under 1300 ℃ only mostly, and alumina is hollow ball price is high, use Yugaowente only different place.
3, aggregate of light qualitative clay
The needle is costly to cost, we returned specially to develop with low alumina content, tall fireproof spent clay is given priority to, it is good with agglomeration sex to match, have expand the aggregate of new-style light qualitative clay of the clay of action and light qualitative filling.
What with this kind light qualitative aggregate makes up is pouring makings have good high temperature capability. Current what we use is pouring makings Al2O3 content is amounted to 50% , 65% , 83% , siO2 content is 4l% accordingly, 30% , 79% . High use temperature amounts to 1650 ℃ , the compression intensity when 1400 ℃ is amounted to 30, 35MPa. Line change leads: Dry hind is very small; The ﹣ after high temperature is firing 0.8% , 0.2% .
4, tall aluminium is pouring makings
In the meantime, those who face need of heating furnace place is high temperature resistant ability, we also were designed expect for aggregate and pink with tall aluminous qualitative raw material, those who join bond to be made is fireproof and pouring makings.
This kind pouring makings have higher mechanical intensity and good heatproof shake, fight the function such as abrasion, basically use the liner that makes furnace of kiln of hot-blast stove of boiler, blast furnace, heating furnace, pottery and porcelain wait for all sorts of kiln furnace.
We choose these a few kinds in the project that builds heating furnace fireproof and pouring makings, the performance through mastering them is quality, will realize the industrial demand of heating furnace. Pouring the use of makings reached crucial one stage since the development for metallurgical industry.
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