CS260171B1 - Charge for the production of ferro-silicon - Google Patents
Charge for the production of ferro-silicon Download PDFInfo
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- CS260171B1 CS260171B1 CS856786A CS678685A CS260171B1 CS 260171 B1 CS260171 B1 CS 260171B1 CS 856786 A CS856786 A CS 856786A CS 678685 A CS678685 A CS 678685A CS 260171 B1 CS260171 B1 CS 260171B1
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Abstract
Vsádzka pre výrobu ferosilikozirkónu metalotermickým spósobom v elektrickej oblúkovej peci s použitím Komblnácie redukovadiel kremíka a hliníka s vymedzením spotřeby hliníka v rozmedzí 10 až 20 °/o hmotnosti Zr koncentrátu. Dosahuje sa tým) vyššia čistota zliatlny na hliník vyjádřená obsahom max. 2 % hmotnosti a pomerom Al: Zr 0,01. Vysoké využitie zirkónu 75 až 80 % je zabezpečené dávkováním vápna v množstve minimálně 80 % hmotnosti Zr koncentrátu.Charge for the production of ferrosilicozirconium by metallothermal method in an electric arc furnace using a combination of silicon and aluminum reducing agents with a limitation of aluminum consumption in the range of 10 to 20 % of the weight of the Zr concentrate. This achieves a higher purity of the alloy for aluminum expressed as a content of max. 2 % by weight and an Al:Zr ratio of 0.01. High utilization of zirconium of 75 to 80 % is ensured by dosing lime in an amount of at least 80 % by weight of the Zr concentrate.
Description
Vynález sa týká vsádzky pre výrobu ferosilikozirkónu v elektrickej oblúkovej peci.The invention relates to a batch for the production of ferro-silicosircon in an electric arc furnace.
Pri výrobě ferosilikozirkónu metalotermickým sposobom v elektrickej oblúkovej peci sa ako redukovadlo používá křemík alebo kombinácia kremíka s hliníkom. Množstvo používaného hliníka nie je však nižšie ako 40 % hmotnosti zirkónového koncentrátu. Vápno sa používá v množstve okolo 50 percent hmotnosti zirkónového koncentrátu.Silicon or a combination of silicon and aluminum is used as the reducing agent in the production of ferro-silicon-zirconium by a metallothermic method in an electric arc furnace. However, the amount of aluminum used is not less than 40% by weight of the zirconium concentrate. Lime is used in an amount of about 50 percent by weight of the zirconium concentrate.
Nedostatkom postupu je predovšetkým nízké využitie zirkónu zo vsádzky, alebo vysoký obsah hliníka v zliatine, v rozmedzí 4 až 10 % hmot., s pomerom AI: Zr 0,06 až 0,2.The disadvantage of the process is in particular the low utilization of the zirconium from the batch or the high aluminum content in the alloy, in the range of 4 to 10% by weight, with an Al: Zr ratio of 0.06 to 0.2.
Tyto nedostatky sú odstránené vsádzkou pre výrobu ferosilikozirkónu metalotermlckým spósobom v elektrickej oblúkovej peci, s použitím kombinácie křemíkového a hliníkového redukovadla podlá vynálezu, ktorého podstata je, že vsádzka obsahuje 10 až 20 % hmotnosti hliníka a najmenej 80 % hmotnosti vápna z celkovej hmotnosti zirkónového koncentrátu.These drawbacks are overcome by a batch for the production of ferro-silicosircon by a metallothermic method in an electric arc furnace, using a combination of a silicon and aluminum reducer according to the invention, wherein the batch comprises 10 to 20% aluminum by weight and at least 80% lime by weight of total zirconium concentrate.
Vymedzením množstva hliníkového redukovadla používaného v kombinácií s kremikom na rozmedzie 10 až 20 % hmotnosti zirkónového koncentrátu za zaistí výroba zliatiny s nízkým obsahom hliníka do 2 % hmot. s pomerom AI : Zr 0,01 až 0,02. Vysoké využitie zirkónu zo vsádzky je zaistené přidáváním vápna v množstve min. 80 % hmotnosti zirkóinového koncentrátu.By limiting the amount of aluminum reducing agent used in combination with silicon to a range of 10 to 20% by weight of the zirconium concentrate, the production of an alloy with a low aluminum content up to 2% by weight is ensured. with an Al: Zr ratio of 0.01 to 0.02. High utilization of zirconium from the batch is ensured by adding lime in the amount of min. 80% by weight of zirconium concentrate.
Příklad zloženia vsádzky pri tavení v elektrickej oblúkovej peci:Example of composition of melting charge in electric arc furnace:
100 dielov hmotných Zr koncentrátu, dielov hmotných FeSi 90, dielov hmotných vápna,100 parts by weight of Zr concentrate, parts by weight of FeSi 90, parts by weight of lime,
17,5 dielov hmotných AI odpadu.17.5 parts of mass AI waste.
Zloženie kovu:Metal composition:
až 40 % hmotnosti Zr, až 55 % hmotnosti Si,up to 40% Zr, up to 55% Si,
0,4 % hmotnosti AI, poměr AI: Zr 0,01.0.4% Al by weight, Al: Zr ratio 0.01.
Využitie zirkónu 75 až 80 %.Use of zirconium 75 to 80%.
Zloženie trosky:Slag composition:
až 8 % hmotnosti ZrO2, až 48 % hmotnosti CaO, až 29 % hmotnosti SiO2, až 13 % hmotnosti AI2O3,up to 8% ZrO2, up to 48% CaO, up to 29% SiO2, up to 13% Al2O3,
0,7 až 1 % hmotnosti FeO.0.7 to 1% FeO.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS856786A CS260171B1 (en) | 1985-09-23 | 1985-09-23 | Charge for the production of ferro-silicon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS856786A CS260171B1 (en) | 1985-09-23 | 1985-09-23 | Charge for the production of ferro-silicon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS678685A1 CS678685A1 (en) | 1988-05-16 |
| CS260171B1 true CS260171B1 (en) | 1988-12-15 |
Family
ID=5415680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS856786A CS260171B1 (en) | 1985-09-23 | 1985-09-23 | Charge for the production of ferro-silicon |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS260171B1 (en) |
-
1985
- 1985-09-23 CS CS856786A patent/CS260171B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS678685A1 (en) | 1988-05-16 |
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