CN102865737A - Titanium-slag direct-current electric-arc furnace - Google Patents
Titanium-slag direct-current electric-arc furnace Download PDFInfo
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- CN102865737A CN102865737A CN2012103864196A CN201210386419A CN102865737A CN 102865737 A CN102865737 A CN 102865737A CN 2012103864196 A CN2012103864196 A CN 2012103864196A CN 201210386419 A CN201210386419 A CN 201210386419A CN 102865737 A CN102865737 A CN 102865737A
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- peripheral cloth
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Abstract
The invention discloses a titanium-slag direct-current electric-arc furnace. According to the furnace, a hollow electrode (1) is arranged in the center of the furnace top, 3-5 peripheral material distributing holes which are distributed evenly are arranged around the hollow electrode (1) on the circumference of the furnace top, all material distributing points are located above a melting bath, the total peripheral material distributing amount accounts for 20%-40% of the total feeding amount, part of ilmenite concentrate powder is mixed with anthracite and then is fed into the furnace through peripheral material distributing holes, and blanking speeds of all peripheral material distributing holes are equal, so that the uniformity of melting bath characteristics is guaranteed. By the aid of the furnace, the empty chamber temperature of the closed electric furnace is reduced, the thermal load of the furnace top is reduced, the flue gas temperature of the electric furnace is reduced, and the thermal efficiency of the electric furnace and the productivity of the electric furnace are improved.
Description
Technical field
The present invention relates to a kind of titanium slag DC electric arc furnace field.
Background technology
Produce the titanium slag electric arc furnaces and can be divided into ac arc furnace and direct current electric arc furnace by type, the raw material of direct current electric arc furnace uses the ilmenite concentrate powder, realize that fully continuous, hollow electrode feeds in raw material, realize the melting of titanium slag smelting open arc, solved titanium slag and turned over slag, boiling phenomenon in smelting, the working of a furnace is stable, and is simple to operate, power consumption is few, and the rate of recovery is high.Also caused the high temperature titanium slag stronger to the heat radiation of electric furnace furnace roof but open wide thoroughly the molten bath, the furnace roof of direct current electric arc furnace uses water cooling, and the heat that cooling water is taken away from furnace roof accounts for the over half of whole all energy losses of electric furnace.
Summary of the invention
Be head it off, the present invention adds peripheral cloth hole at furnace roof, drops into ilmenite sub-material and reducing agent in from peripheral cloth hole to stove.Peripheral cloth hole equates with the distance at electric furnace center.
The objective of the invention is to be achieved through the following technical solutions:
A kind of titanium slag direct current electric arc furnace, hollow electrode of the present invention is arranged on the furnace roof center; Offer 3 ~ 5 uniform peripheral cloth holes around hollow electrode at the furnace roof circumference; Each sub-material point be in the molten bath directly over, total peripheral cloth amount accounts for the 20%-40% of total inventory; Partial-titanium concentrate powder is mixed rear in the input stove of peripheral cloth hole with anthracite; The blanking velocity in each peripheral cloth hole equates to guarantee the even of molten bath characteristic.
The invention has the beneficial effects as follows:
(1) reduces top temperature, prolong the service life of furnace roof parts.
(2) reduce furnace gas temperature, reduced the load of smoke processing system.
(3) improve the electric furnace heat utilization rate, improved production capacity.With per hour minimum saving 1, the 000kWh electric weight calculates, but save power 660 per month, 000kWh, electro-titanium slag output per hour will increase 500kg simultaneously, count the profit of titanium slag generation in, and the benefit of creation is more considerable.
Below in conjunction with the drawings and specific embodiments the present invention is further explained.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of looking up of Fig. 1.
The specific embodiment
Embodiment one: shown in Figure 2 such as Fig. 1, and a kind of titanium slag direct current electric arc furnace, hollow electrode 1 of the present invention is arranged on the furnace roof center; Offer 3 ~ 5 uniform peripheral cloth holes 2,3,4 around hollow electrode 1 at the furnace roof circumference; Each sub-material point be in the molten bath directly over, total peripheral cloth amount accounts for 30% of total inventory; Partial-titanium concentrate powder is mixed rear in the input stove of peripheral cloth hole with anthracite; The blanking velocity in each peripheral cloth hole equates to guarantee the even of molten bath characteristic.
Each sub-material point be in the molten bath directly over, be convenient to absorb arc radiation, reduce top temperature, improve furnace heat efficiency and production capacity.
Peripheral cloth hole is evenly distributed on the circumference take the stove center as the center of circle, each sub-material point be in the molten bath directly over, avoided again the central electrode arc zone.
When electric furnace began feed, raw material was transported to respectively centre charging point and peripheral cloth hole, drops in the stove simultaneously.Total cloth amount in peripheral cloth hole accounts for the 20-40% of whole cloth amounts, and shared ratio is adjusted according to the overheat condition in molten bath.But the more high better fusing that guarantees again peripheral cloth of cloth amount percentage in peripheral cloth hole just reduces the shared percentage of peripheral cloth, until material all melts when weld pool surface has solid accumulation.Utilize simultaneously the variation of the heat of taking away of furnace roof cooling water, measure the cooling degree in molten bath in the stove, the auxiliary adjustment.
The embodiment of the invention is provided with 2,3,4, three the cloth points in 3 peripheral cloth holes at furnace roof and is evenly distributed on furnace roof, becomes each other hexagonal angle.When electric furnace begins to feed intake, there is 30% raw material to enter peripheral cloth system, 70% enters the hollow electrode charging system.Each peripheral cloth hole 2,3,4 inventory account for respectively always feed intake 10%.The material that enters in the stove from hollow electrode 1 forms liquid molten bath in the arc region reaction that is rapidly heated, and enlarges towards periphery under the effect of molten bath motion.Enter the material in the stove from peripheral cloth hole, at first scatter under the effect of furnace gas motion, then the heat of high-temperature gas in the absorption furnace takes a walk on the weld pool surface of melting boiling, and under the effect of high temperature, fusing enters the molten bath and participates in reaction.In this course, furnace gas lowered the temperature, the raw material stroll that enters in the stove from peripheral cloth is simultaneously flown upward, and has hidden the heat radiation in high temperature molten bath, has reduced the temperature of furnace roof.In terms of overall, improve the thermal efficiency of electric furnace, can increase the electric furnace inventory accordingly, improved production capacity.
Embodiment two:
Such as embodiment one described structure, peripheral cloth amount accounts for 20% of total inventory.
Embodiment three:
Such as embodiment one described structure, peripheral cloth amount accounts for 40% of total inventory.
Claims (1)
1. a titanium slag direct current electric arc furnace is characterized in that, hollow electrode (1) is arranged on the furnace roof center; Offer 3 ~ 5 uniform peripheral cloth holes around hollow electrode (1) at the furnace roof circumference; Each sub-material point be in the molten bath directly over, total peripheral cloth amount accounts for the 20%-40% of total inventory; Partial-titanium concentrate powder is mixed rear in the input stove of peripheral cloth hole with anthracite; The blanking velocity in each peripheral cloth hole equates to guarantee the even of molten bath characteristic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103864196A CN102865737A (en) | 2012-10-13 | 2012-10-13 | Titanium-slag direct-current electric-arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103864196A CN102865737A (en) | 2012-10-13 | 2012-10-13 | Titanium-slag direct-current electric-arc furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102865737A true CN102865737A (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103864196A Pending CN102865737A (en) | 2012-10-13 | 2012-10-13 | Titanium-slag direct-current electric-arc furnace |
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| CN (1) | CN102865737A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087710A (en) * | 2014-07-24 | 2014-10-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing titanium slag by electric furnace-smelted and pre-reduced pellets |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174810A (en) * | 1992-02-19 | 1992-12-29 | Dow Corning Corporation | Ferrosilicon smelting in a direct current furnace |
| CN101643805A (en) * | 2008-08-08 | 2010-02-10 | 苏永山 | New method for producing high-quality high titanium slag |
| CN201455266U (en) * | 2009-05-19 | 2010-05-12 | 方喜 | Transferred arc direct-current plasma zinc powder electric furnace |
| CN201935551U (en) * | 2010-10-27 | 2011-08-17 | 上海虹禧机械设备有限公司 | Low-frequency electric high-titanium slag smelting furnace |
-
2012
- 2012-10-13 CN CN2012103864196A patent/CN102865737A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5174810A (en) * | 1992-02-19 | 1992-12-29 | Dow Corning Corporation | Ferrosilicon smelting in a direct current furnace |
| CN101643805A (en) * | 2008-08-08 | 2010-02-10 | 苏永山 | New method for producing high-quality high titanium slag |
| CN201455266U (en) * | 2009-05-19 | 2010-05-12 | 方喜 | Transferred arc direct-current plasma zinc powder electric furnace |
| CN201935551U (en) * | 2010-10-27 | 2011-08-17 | 上海虹禧机械设备有限公司 | Low-frequency electric high-titanium slag smelting furnace |
Non-Patent Citations (1)
| Title |
|---|
| 杨绍利等: "《钛铁富集》", 31 January 2012, article "《直流电弧的偏向》", pages: 186-189 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104087710A (en) * | 2014-07-24 | 2014-10-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for preparing titanium slag by electric furnace-smelted and pre-reduced pellets |
| CN104087710B (en) * | 2014-07-24 | 2016-05-25 | 攀钢集团攀枝花钢铁研究院有限公司 | Electric furnace smelting pre-reduced pellet is prepared the method for titanium slag |
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Application publication date: 20130109 |