CN1122371A - Method for remelting ferro-silicon alloy powder in induction furnace - Google Patents
Method for remelting ferro-silicon alloy powder in induction furnace Download PDFInfo
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- CN1122371A CN1122371A CN94111960A CN94111960A CN1122371A CN 1122371 A CN1122371 A CN 1122371A CN 94111960 A CN94111960 A CN 94111960A CN 94111960 A CN94111960 A CN 94111960A CN 1122371 A CN1122371 A CN 1122371A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
The said method builds furnace lining with quartz sand and uses graphite carbon/rod as melting guiding body to realize the remelting of ferro-silicon alloy powder in induction furnace. It reuses the ferro-silicon alloy powder with low power consumption.
Description
The invention belongs to metal remelting technical field, particularly relate to a kind of method of remelting ferro-silicon alloy powder in induction furnace.
The ferrous metal smelting manufacturing needs a large amount of master alloys, and ferro-silicon is exactly wherein a kind of.Ferro-silicon is delivered goods according to the bulk product that national standard and customer requirements must be broken for it in 20-100 millimeters scopes after ferroalloy works smelt into product.Therefore, iron alloy production and the granular and powdery that uses producer to produce a large amount of lumpiness＜20 millimeter in broken ferro-silicon process do not conform to investigate things, and these powder and particulate Si iron alloy, ferrous metallurgy factory will not use, and ferroalloy works melt down also difficult.
In the prior art, the someone attempts it to be lumpd again be used with induction furnace remelting ferro-silicon powder, but its purpose that is unrealized.Chief reason is, induction furnace heat fused mode is to form the eddy current self-heating with conduction, the good material cutting induced current of magnetic diffusivity, makes the melt intensification of conduction, magnetic conduction and melts.Yet the silicon in the ferro-silicon is non-metallic element, and the content of its silicon is generally greater than 70%, so ferro-silicon resistivity height cuts the ability extreme difference that induced current produces the eddy current self-heating.In induction furnace, ferro-silicon can only be heated to 700-800 ℃, but its fusing point is about 1300 ℃, about 500 ℃ apart from the temperature head of fusing point.Because the ferro-silicon powder can not reduce its resistance under 800 ℃ temperature condition, therefore, do not reach the purpose of melted silicon alloy powder in induction furnace.
Purpose of the present invention, just provide a kind of conduction or good material of magnetic diffusivity of utilizing, in induction furnace, draw the method that melts the ferro-silicon powder and make its remelting, this method is not only saved the energy and effectively utilized the ferro-silicon powder, and the requirement that can be up to state standards of the ferro-silicon after the remelting.
The objective of the invention is to realize by the following technical solutions:
The method of remelting ferro-silicon alloy powder in induction furnace is with stamp mass knotting induction furnace furnace lining, places in the stove drawing melt, makes itself and furnace wall keep equidistant gap, and its step of drawing molten remelting is:
A, to induction furnace energising, make that temperature rises to 1400～1500 ℃ in the stove;
After b, adding furnace charge to burner hearth are expired, improve induction furnace power and draw molten;
When the furnace charge fusing is fallen in c, the stove, replenish the adding furnace charge, molten full until the stove inner melt;
D, propose to draw melt, continue in stove, to feed intake and strengthen induction furnace power, make liquation in the whole stove molten full till;
E, refining liquation;
F, pour out in the stove 40-60% qualified liquation and cast finished product, in stove, replenish again and add furnace charge and melt; Circulation d → e → f → d step.
Further be that the stamp mass that is adopted in the aforesaid method is quartz sand or magnesia.
Further be that the melt that draws that is adopted in the aforesaid method is a graphite carbon rod.
Further be that the induction furnace furnace volume is 1: 2.8-3.2 with drawing the melt volume ratio in the aforesaid method.
Further be that in a step of aforesaid method, the speed of induction furnace heat temperature raising is 20-30 ℃/minutes.
Further be, in the f step of aforesaid method, preferably pour out the liquation of stove interior 50% and cast finished product that restock adds furnace charge and melts.
The present invention not only can remelting ferro-silicon powder, make it obtain regeneration, and current consumption is low, and can carries out scale production, the regulation that its product can be up to state standards.
Accompanying drawing is a process flow diagram of the present invention.
Below, in conjunction with the accompanying drawings thought of the present invention is further described.
Embodiment 1
500kg frequently induction furnace adopt graphite carbon rod to draw melt to draw molten remelting less than 20 millimeters ferro-silicon powder, its stamp mass is a magnesia.Be placed in the induction furnace drawing melt, make itself and furnace wall on every side keep equidistant gap.To the induction furnace energising, make the interior temperature of stove rise to 1400-1500 ℃.The weighing apparatus temperature adds furnace charge to burner hearth and expires after 10-30 minutes, strengthen inductor block power and draw molten.When the furnace charge fusing is fallen in the stove, replenish the adding furnace charge, solution melts till the full stove in stove.Weigh warm solution after 5-15 minutes, propose graphite carbon rod, continue in stove, to drop into furnace charge and strengthen induction furnace power, make that solid charge is molten to be finished and make in the whole stove solution molten full.Sampling analysis is also adjusted composition till qualified.Pour out in the stove 40-60% qualified ferro-silicon solution-cast finished product, and then in stove, replenish and add furnace charge, melt → refining → 40-60% liquation casting finished product → reinforced → this circulation technology step of fusing.
Embodiment 2:
On the 500kg medium-frequency induction furnace, adopt electric arc furnace depleted graphite carbon rod electrode remelting ferro-silicon alloy powder.The furnace lining stamp mass adopts the quartz sand of various granularities, and its furnace diameter is 420 millimeters, and the burner hearth height is 750 millimeters.The graphite carbon rod diameter is 250 millimeters, and its length is a little more than burner hearth.Graphite carbon rod is put into burner hearth, and it is equidistant making itself and gap on every side, furnace wall, and its induction furnace furnace volume and graphite carbon rod volume ratio are 1: 3.Connect induction furnace induction coil power supply, open SCR control power supply recirculated cooling water.Heat up with the speed that went up 25 kilovolt-amperes of adjusting powers in per 10 minutes, its speed is 20-30 ℃/minutes.In 1 hour power is transferred to 100 kilovolt-amperes, temperature rises to 1400 ℃ in the stove.It is full until stove to add ferro-silicon alloy powder, improves induction furnace power and draws molten.When furnace charge in the stove falls, drop into furnace charge while stirring, extremely expire stove up to ferro-silicon powder fusing back.Graphite carbon rod propose stove outer after, in stove, drop into furnace charge immediately and melt, constantly replenish furnace charge to stove, up to the stove inner melt molten full till.Sampling analysis is adjusted composition and is carried out refining, makes liquation reach qualified standard.Pour out 1/2 of qualified liquation in the stove and cast finished product, in stove, add solid ferro-silicon powder again and melt → cyclic process of refining → 1/2 solution-cast → feed intake → melt.
Claims (6)
1, the method for remelting ferro-silicon alloy powder in induction furnace is with stamp mass knotting induction furnace furnace lining; The present invention is characterized in that, places in the stove drawing melt, makes itself and furnace wall keep equidistant gap; It draws molten reflow step:
A, to induction furnace energising, make that temperature rises to 1400-1500 ℃ in the stove;
After b, adding furnace charge to burner hearth are expired, improve induction furnace power and draw molten;
When the furnace charge fusing is fallen in c, the stove, replenish the adding furnace charge, molten full until the stove inner melt;
D, propose to draw melt, continue in stove, to feed intake and strengthen induction furnace power, make whole stove inner melt molten full till;
E, refining liquation;
F, pour out in the stove 40-60% qualified liquation and cast finished product, in stove, replenish again and add furnace charge and melt circulation d → e → f → d step.
As the said method of claim 1, it is characterized in that 2, stamp mass wherein preferably adopts quartz sand or magnesia.
As the said method of claim 1, it is characterized in that 3, the melt that draws wherein is a graphite carbon rod.
As the said method of claim 1, it is characterized in that 4, the induction furnace furnace volume is 1: 2.8～3.2 with drawing the melt volume ratio.
5, as the said method of claim 1, it is characterized in that, be 20-30 ℃/minutes to the temperature rise rate of induction furnace energising heating furnace.
As the said method of claim 1, it is characterized in that 6, preferably pour out the liquation of stove interior 50% and cast finished product, restock adds furnace charge and melts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111960A CN1122371A (en) | 1994-11-02 | 1994-11-02 | Method for remelting ferro-silicon alloy powder in induction furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111960A CN1122371A (en) | 1994-11-02 | 1994-11-02 | Method for remelting ferro-silicon alloy powder in induction furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1122371A true CN1122371A (en) | 1996-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94111960A Pending CN1122371A (en) | 1994-11-02 | 1994-11-02 | Method for remelting ferro-silicon alloy powder in induction furnace |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744977A (en) * | 2016-12-09 | 2017-05-31 | 永平县泰达废渣开发利用有限公司 | A kind of graphite furnace lifting method of the molten silicon of utilization induction furnace |
| WO2018103711A1 (en) * | 2016-12-09 | 2018-06-14 | 成都斯力康科技股份有限公司 | Process for producing silicon ingots by smelting silicon powder |
| CN110078077A (en) * | 2019-05-14 | 2019-08-02 | 刘亮 | A method of the clay standby metallic silicon of Buddha's warrior attendant wire cutting silicon is recycled based on intermediate frequency (IF) smelting |
| WO2020248643A1 (en) * | 2019-06-13 | 2020-12-17 | 中国电子科技集团公司第二十六研究所 | Polycrystalline material synthesizing device and synthesizing method for scintillation crystal having gallium-containing garnet structure |
-
1994
- 1994-11-02 CN CN94111960A patent/CN1122371A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106744977A (en) * | 2016-12-09 | 2017-05-31 | 永平县泰达废渣开发利用有限公司 | A kind of graphite furnace lifting method of the molten silicon of utilization induction furnace |
| WO2018103711A1 (en) * | 2016-12-09 | 2018-06-14 | 成都斯力康科技股份有限公司 | Process for producing silicon ingots by smelting silicon powder |
| CN110078077A (en) * | 2019-05-14 | 2019-08-02 | 刘亮 | A method of the clay standby metallic silicon of Buddha's warrior attendant wire cutting silicon is recycled based on intermediate frequency (IF) smelting |
| CN110078077B (en) * | 2019-05-14 | 2021-10-22 | 刘亮 | Method for preparing metal silicon based on intermediate frequency smelting recovered diamond wire cutting silicon mud |
| WO2020248643A1 (en) * | 2019-06-13 | 2020-12-17 | 中国电子科技集团公司第二十六研究所 | Polycrystalline material synthesizing device and synthesizing method for scintillation crystal having gallium-containing garnet structure |
| US11623872B2 (en) | 2019-06-13 | 2023-04-11 | China Electronics Technology Group Corporation No. 26 Research Institute | Device and method for synthesis of gallium-containing garnet-structured scintillator poly crystalline material |
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