LF furnace (LADLE FURNACE) namely steel wraps finery, it is equipment of the fine outside the main furnace in steely production. LF furnace points to the finery in steely industry commonly, actual a kind of be electric arc furnace special form.
Fireproof material includes line
Offer line of goods limits job: Magnesian carbon brick, alumina, magnesian carbon brick, magnesian, aluminous carbon brick, tall aluminous brick, corundum pointed spar is pouring makings.
The limits that offer money is safe line: Magnesia brick, tall aluminous brick, argillaceous brick, alumina is pouring makings.
Offer lining of goods limits insulation: Beaverboard of pottery and porcelain.
Material of work skill fire: Breathe freely brick, steel includes spray head, slip water mouth board, and piece.
Other and fireproof material: Corundum do as one pleases is pouring makings, freedom board is pouring makings, all round bottom pouring makings, backfill, mixture mortar.
Fireproof material includes line
Offer line of goods limits job: Magnesian carbon brick, alumina, magnesian carbon brick, magnesian, aluminous carbon brick, tall aluminous brick, corundum pointed spar is pouring makings.
The limits that offer money is safe line: Magnesia brick, tall aluminous brick, argillaceous brick, alumina is pouring makings.
Offer lining of goods limits insulation: Beaverboard of pottery and porcelain.
Material of work skill fire: Breathe freely brick, steel includes spray head, slip water mouth board, and piece.
Other and fireproof material: Corundum do as one pleases is pouring makings, freedom board is pouring makings, all round bottom pouring makings, backfill, mixture mortar.
LF furnace is refined facility has electric steel water in steel bag, be heat with electric arc method of the fine outside the furnace that is main technique feature. Its structure is main by add pyroelectricity to respect system, steel to include lid, alloy and system of feed in raw material of broken bits makings, measure the bag of Wen Quxiang aperture, steel, system that blow argon to comprise.
LF furnace is a kind of muti_function fine container, its characteristic is undertake by 3 electrode; heats through electric arc on one hand burying arc to heat build; of tall alkalinity reducing slag to undertake deoxidization, to decoke wait on one hand. To make molten steel and slag are contacted adequately, stimulative fine reaction makes molten steel temperature even, bottom inbreathe inert gase is wrapped in steel (argon is angry) have molten steel mix. Make the steel that add a person wraps the alloy inside to be achieved inside molten steel thereby change equably.
Take off gas to come true, LF furnace adds vacuum processing to weigh LF(V) . The vacuum device that cooperates with LF(V) basically has two kinds: RH and VD. Current, the electric stove of above of Japanese apt 80t or converter use combination of the refined outside LF+RH furnace, because the existence of the slag in steel bag does not affect RH to operate, so LF and RH combination are in what use dispute Chang Qia becomes in a pull current Cheng. The refined outside be less than 80t electric stove or converter to use LF10 VD heat is combined (steel bag wraps use) as vacuum steel. Compare with LF10 RH photograph, because broken bits amount is too large, the effect taking off gas of LF10 VD is differred slightly a few. The form of VD has two kinds again: One kind is vacuum lid direct lid is buckled go up in steel bag, call structure of bucket type vacuum. Steel bag puts another kind in a canister, call structure of vacuum of coal tub type.
LF lining mars an element:
(1) chemical reaction and frit corrode;
Broken bits and brick react, grain brim forms photograph of not stable mine: C2S, C3MS2, CMS, C2AS
(2) the volatilization below high temperature vacuum;
The volatilization of different and fireproof material speed: Electric frit magnesian chromium is qualitative > magnesium is qualitative > zirconium stone > limy > dolomite
(3) erode slaggily;
Slaggy penetrate the interior to the brick along the blowhole of be linked together of bricky matrix part, produced degenerative layer, easy flake
(4) thermal shock and machinery erode.
|
Finery capacity |
Bao Bi |
By the bag |
Broken bits line |
|
90t |
Magnalium carbon brick |
Magnalium carbon brick |
MT14A Magnesian carbon brick |
|
75t |
Magnalium carbon brick |
Magnalium carbon brick |
MT14A Magnesian carbon brick |
|
40t |
Brick of aluminium magnesium carbon |
Magnalium carbon brick |
MT14B Magnesian carbon brick |
|
40t |
MT14C Magnesian carbon brick |
Magnalium carbon brick |
MT14B Magnesian carbon brick |
|
40tLF ( V ) |
Magnesian calcic brick |
Magnesian calcic brick |
Magnesian carbon brick |
Commonly used and fireproof material has LF stove: Magnesian carbon brick, magnesian calcic brick, aluminous carbon brick, brick of MT14C magnesian carbon, magnalium carbon brick.
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