CN1122442A - Burden preheating furnace for electric furnace - Google Patents
Burden preheating furnace for electric furnace Download PDFInfo
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- CN1122442A CN1122442A CN 95100486 CN95100486A CN1122442A CN 1122442 A CN1122442 A CN 1122442A CN 95100486 CN95100486 CN 95100486 CN 95100486 A CN95100486 A CN 95100486A CN 1122442 A CN1122442 A CN 1122442A
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- furnace
- preheating
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- smelting
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Abstract
The burden preheating furnace preheats the burden for electric furnace including calcium carbide, silicon, manganese, copper, iron, etc. to one required temp. The preheated burden is discharged from the outlet of the preheating furnace bottom and fed to the feeding port of electric furnace. The use of the preheating furnace can decrease power consumption and raise efficiency in electric furnace steel-smelting.
Description
The present invention relates to the charge preheating smelting process of a kind of electric furnace smelting calcium carbide, ferrosilicon, ferromanganese, copper, aluminium and steel-making, metal, electric smelting such as nonmetal.
Existing production calcium carbide, ferrosilicon, ferromanganese, copper, aluminium and steel-making.All manufacturers are single smelting with electrical heating entirely.Its power consumption is very big, makes finished product high.Supply falls short of demand owing to electric power, and some producer does not always just have the guarantee of ordinary production, often is in occurrence in half a lifetime attitude.Normal causing to each side diminishes unhelpful situation.
Purpose of the present invention is exactly in order to overcome above-mentioned existing technical deficiency, and a kind of device for preheating charging stock is provided, and needed furnace charge is preheated to preference temperature with coal combustion process earlier changes electric furnace smelting again over to.Make electric furnace in smelting process, reduce the consumption of electric energy heat, extenuate the power shortage situation.Shorten the duration of heat in the electric furnace.Accelerate smelting speed, improved electric furnace smelting efficient, reduced product cost.For country increases wealth.
The present invention can realize by following scheme.Near the side charge door of electric furnace, (near being advisable), the calcium carbide shown in Figure of description one was smelted preheating furnace by adorning a device for preheating charging stock, (body of heater is to go up garden shape, square down) and electric arc furnaces operation schematic construction.Furnace charge is delivered to by conveyer belt and is fallen into preheating in the stove in the preheating furnace furnace roof end charging hopper.Be preheated to 850 ℃ through preheating furnace, pack the electric furnace charging mouth into to cupola well material level line through preheating furnace lower curtate funnel discharging opening again, at this moment electric furnace begins the starting smelting.Delivery bag is the dried preheating furnace of feed constantly, behind the charge preheating ceaselessly power supply stove smelt to constitute the smelting production line of a system.(especially big electric furnace can and connect feed with two preheating furnaces).Figure two: be the preheating furnace for steel-making usefulness, large-scale electric arc furnaces can be established the ceaselessly reinforced preheating of three device for preheating charging stock rounds in specie; Figure three: can only use for a power frequency or middle frequency furnace by a device for preheating charging stock.Establish on power frequency or the middle frequency furnace table one with the same big movable fire-resistant preheating ring of stove crucible bore, highly be suitable for to appropriate, furnace charge is contained in and rotates the preheating grate in the fire-resistant preheating ring and adjust bocca preheating furnace charge arbitrarily.The preheat temperature of various furnace charges, 850 ℃ in calcium carbide furnace charge, 1100 ℃ of ferrosilicon, 950 ℃ in ferromanganese is made steel 800 ℃, 750 ℃ of copper, 400 ℃ in aluminium.Preheat temperature is can not Tai Gaotai low.
By the figure construction, be mainly electric welding after plate is good down.Preheating furnace furnace wall refractory brick, heating furnace tracery wall quirk high-alumina brick.Have nothing in common with each other in the combustion chamber of figure one, figure one, figure three, as shown in the figure.Figure one, figure two are Coal powder spray heatings.Figure three is that coal is piled up the blast roasting heating.To adjust the heating clamber fire box temperature at any time in a word, guarantee that all the time the preheat temperature that needs of supplying with furnace charge is as the criterion.
The present invention and single power supply, singlely smelt in electric furnace, one ton of calcium carbide of every production is an example, can reduce power consumption 1/3rd, and efficient improves more than 1/4th.Other silicomanganese copper aluminium and steel-making all are higher than or approximate this numeral.Can be described as one " not electricity consumption of low temperature, high temperature refines fast." the power-economizing method of production skilful use electricity.Product cost has obviously reduced.The power shortage situation will inevitably be slowed down a step.
Figure of description figure two explanations.
Figure one, 1, electric furnace, 2, electrode, 3, blow tank, 4, coal-ash spraying tube, 5, combustion chamber bocca, 6, refractory brick, 7, the wind band, 8, internal protecting wall, 9, shaft, 10, dust removing tube, 11, material-falling hopper, 12, conveyer belt, 13, furnace wall refractory brick, 14, discharge pipe, 15, tracery wall quirk, 16, refractory brick, 17, table, 18, shaft support column, 19, the discharging opening liner plate, 20, combustion chamber.
Figure two, 1, advance burner, 2, the combustion chamber, 3, the preheating material, 4, furnace wall refractory brick, 5, the stove inwall, 6, charge door, 7, hanger, 8, shaft, 9, the combustion chamber loam cake, 10, Coal powder spray input pipe, 11, heater profile, 12, arm-tie at the bottom of the ash disposal, 13, hinge, 14, take off the furnace charge bottom door, 15, hook.
Figure three, 1, intermediate frequency furnace or main frequency furnace, 2, fire door, 3, furnace bottom, 4, fire bars, 5, furnace wall refractory brick, 6, burner hearth, 7, bocca, add the coal mouth, 8, chain sling, 9, channel-section steel, 10, roller, 11, the preheating furnace top cover, 12, hole, position, stove rotational angle chamber, 13, preheating shaft, 14, fresh air inlet, 15, the refractory brick circle, 16, the preheating active ring.
Claims (2)
1, a kind of burden preheating furnace for electric furnace, particularly smelt the electric furnace smelting stove of calcium carbide, ferrosilicon, in the burner hearth wall (1) of smelting furnace, the method for (2) heat supply preheating furnace charge, obviously improved smelting speed, it is characterized in that the heat that furnace charge is packed into behind the coal dust firing that is sprayed into by heat supply hole (1) behind the burner hearth is preheated to more than 1000 ℃, has reduced the electric heating loss of electric furnace in smelting.
2, burden preheating furnace for electric furnace according to claim 1 is characterized in that being heated to more than 800 ℃ in preheating furnace bocca (7) the rotary alignment furnace charge circle (16), intermediate frequency furnace send electric smelting the furnace charge power frequency intermediate frequency furnace of packing into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100486 CN1122442A (en) | 1995-03-03 | 1995-03-03 | Burden preheating furnace for electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95100486 CN1122442A (en) | 1995-03-03 | 1995-03-03 | Burden preheating furnace for electric furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1122442A true CN1122442A (en) | 1996-05-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95100486 Pending CN1122442A (en) | 1995-03-03 | 1995-03-03 | Burden preheating furnace for electric furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1122442A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889944A (en) * | 2012-09-17 | 2013-01-23 | 许继集团有限公司 | Calcium carbide production furnace temperature monitoring method |
| CN104938510A (en) * | 2015-07-08 | 2015-09-30 | 安徽省农业科学院植物保护与农产品质量安全研究所 | Sterilization composition containing pyraclostrobin and thiabendazole |
| CN106979686A (en) * | 2017-05-02 | 2017-07-25 | 高金彦 | Two-period form smelting furnace |
| CN107760890A (en) * | 2016-08-18 | 2018-03-06 | 荣泽发动机零部件（常熟）有限公司 | A kind of duplex practice evaporative pattern aluminum process |
-
1995
- 1995-03-03 CN CN 95100486 patent/CN1122442A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102889944A (en) * | 2012-09-17 | 2013-01-23 | 许继集团有限公司 | Calcium carbide production furnace temperature monitoring method |
| CN104938510A (en) * | 2015-07-08 | 2015-09-30 | 安徽省农业科学院植物保护与农产品质量安全研究所 | Sterilization composition containing pyraclostrobin and thiabendazole |
| CN107760890A (en) * | 2016-08-18 | 2018-03-06 | 荣泽发动机零部件（常熟）有限公司 | A kind of duplex practice evaporative pattern aluminum process |
| CN106979686A (en) * | 2017-05-02 | 2017-07-25 | 高金彦 | Two-period form smelting furnace |
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