CN1331351A - Process for smelting high-grade manganese blocks directly from electrolytic manganese as raw material - Google Patents
Process for smelting high-grade manganese blocks directly from electrolytic manganese as raw material Download PDFInfo
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- CN1331351A CN1331351A CN 00113501 CN00113501A CN1331351A CN 1331351 A CN1331351 A CN 1331351A CN 00113501 CN00113501 CN 00113501 CN 00113501 A CN00113501 A CN 00113501A CN 1331351 A CN1331351 A CN 1331351A
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Abstract
A process for smelting high-grade metal Mn blocks directly with electrolytic manganese features that the electrolytic magnanese with different qualities is smelted in different-type electric furnace and then is cooled to obtain Mg blocks. Its advantages include short technological route, simple and process.
Description
The invention belongs to the smelting process of special metal material, be specifically related to the improvement of reguline metal melting method.
Develop rapidly along with Iron And Steel Industry, elaboration steel, high-quality steel have become the leading product of steel market, and in steelmaking process, the practice that adds different trade mark ferromanganese in stove can not satisfy the needs of modern steel industry, directly adds the electrolytic metal Mn sheet in molten steel in the stove, very easily cause the oxidation of manganese sheet again, reduce the effective rate of utilization of manganese, and, be difficult to sink to molten steel because the specific surface area of manganese sheet is big, be unfavorable for alloying, adding block manganese has become a kind of trend.
The method that obtains reguline metal manganese in the prior art is generally aluminum reduction method (Al method) and Si reduction method (the hot method of electric Si).Aluminum reduction method (the hot method of Al) is with MnO
2Resolve into Mn at 1000 ℃ of heat-flashes
3O
4, or add charcoal or ventilation is reduced into MnO under 800 ℃～900 ℃ temperature, and then add aluminum shot and charcoal, in the shaft furnace of magnesia lining, high temperature reduction becomes manganese metal.This method mainly exists in the production process can not remove impurity, need to adopt highly purified pyrolusite, the 2nd, needs add the aluminium of theoretical amount 90%, production cost is higher, the 3rd, slag contains manganese usually 8%～12%, the rate of recovery of manganese is low, shortcomings such as waste resource, thereby this technology of using less all to the utmost both at home and abroad.Si reduction method (the hot method of electric Si), usually adopt manganese ore is smelt the rich manganese slag of low-phosphorous low iron, with rich manganese slag melting high silicon manganese-silicon alloy, and then be raw material with rich manganese slag, high silicon manganese-silicon alloy is made reductive agent, make the three step smelting methods that flux is smelted the reguline metal with lime, this method can be removed impurity such as de-iron, charcoal, silicon, phosphorus, sulphur in a large number, its shortcoming is that Production Flow Chart is long, technology is numerous and diverse, product contains manganese and generally has only below 95%, can not satisfy the needs of modern high-quality steel technology, and the total yield of manganese has only below 60%, the waste resource.China produces manganese big country, and the electrolytic manganese annual production accounts for more than 55% of global ultimate production, and electrolytic manganese aboundresources and product are superfluous but lack the higher-grade ANOMALY IN FINE QUALITY MANGANESE DEPOSITS.
The objective of the invention is to fully rationally utilize China's existing resource, what provide that a kind of Production Flow Chart is short, technology is simple, production cost is low makes the method for the direct melting higher-grade of raw material reguline metal manganese with electrolytic manganese,, to satisfy the needs of modern high-quality steel, the production of elaboration steel.
Technical scheme of the present invention is to be raw material with the electrolytic manganese, be smelted into melt with electric furnace after, coming out of the stove is cooled to reguline metal manganese.
As the further improvement of invention, it is characterized in that electrolytic manganese as raw material, comprise GB one-level electrolytic manganese sheet, secondary electrolytic manganese sheet, inferior manganese sheet and granular electrolytic manganese.Described electric furnace comprises high frequency furnace, intermediate frequency furnace, main frequency furnace, direct current electric arc furnace, trains electrode arc stove, Graphite Electrodes electric arc furnace and plasma heating furnace certainly.Smelting temperature is 1400 ℃～2000 ℃.The manganese content of reguline metal manganese is 90～99.8%.
Advantage of the present invention is that its Production Flow Chart is short, technology is simple, production cost is low, can satisfy the needs of modern high-quality steel, the production of elaboration steel.
Embodiments of the invention are as follows: fill it up with one-level electrolytic metal Mn sheet in the intermediate frequency crucible oven, voltage of intermediate frequency is transferred to maximum, prolongation along with the time, insulation is best in the crucible, the part of electromagnetism intensity maximum (this local temperature is more than 1420 ℃) manganese sheet begins fusing, form tiny molten bath, expand to unfused manganese sheet acceleration infiltration all around with furnace hearth then, make manganese sheet piece fast thawingization in the crucible, until molten when exposing upper strata manganese sheet, must be in crucible continuous manganese supplement sheet, be full of crucible until molten mass, when testing oneself no obvious manganese sheet, be incubated 3～5 minutes, i.e. the tilting furnace ingot casting.After the fusion manganese liquid in the ingot mould solidifies, behind the naturally cooling 30 minutes, in order to quicken cooling, with ingot mould and incomplete cool metal manganese, hang in the previously prepd cooling trough with electric block and to soak about 10 minutes, hang out then the manganese ingot is poured out, promptly get reguline metal manganese finished product, recording the finished product manganese content through sample examination is 96%.
Claims (5)
1, a kind ofly make the method for the direct melting higher-grade of raw material reguline metal manganese, it is characterized in that with the electrolytic manganese being raw material with electrolytic manganese, be smelted into melt with electric furnace after, coming out of the stove is cooled to reguline metal manganese.
2, according to claim 1ly make the method for the direct melting higher-grade of raw material reguline metal manganese, it is characterized in that electrolytic manganese, comprise GB one-level electrolytic manganese sheet, secondary electrolytic manganese sheet, inferior manganese sheet and granular electrolytic manganese as raw material with electrolytic manganese.
3, according to claim 1ly make the method for the direct melting higher-grade of raw material reguline metal manganese, it is characterized in that described electric furnace comprises high frequency furnace, intermediate frequency furnace, main frequency furnace, direct current electric arc furnace, trains electrode arc stove, Graphite Electrodes electric arc furnace and plasma heating furnace certainly with electrolytic manganese.
4, according to claim 1ly make the method for the direct melting higher-grade of raw material reguline metal manganese, it is characterized in that smelting temperature is 1400 ℃～2000 ℃ with electrolytic manganese.
5, according to claim 1ly make the method for the direct melting higher-grade of raw material reguline metal manganese with electrolytic manganese, the manganese content that it is characterized in that reguline metal manganese is 90～99.8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113501 CN1331351A (en) | 2000-06-23 | 2000-06-23 | Process for smelting high-grade manganese blocks directly from electrolytic manganese as raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00113501 CN1331351A (en) | 2000-06-23 | 2000-06-23 | Process for smelting high-grade manganese blocks directly from electrolytic manganese as raw material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1331351A true CN1331351A (en) | 2002-01-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00113501 Pending CN1331351A (en) | 2000-06-23 | 2000-06-23 | Process for smelting high-grade manganese blocks directly from electrolytic manganese as raw material |
Country Status (1)
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| CN (1) | CN1331351A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259171A (en) * | 2010-05-26 | 2011-11-30 | 伍宏斌 | Method for producing metal manganese block |
| CN102586669A (en) * | 2011-01-10 | 2012-07-18 | 伍宏斌 | Method for producing low-carbon ferromanganese |
| CN102586665A (en) * | 2011-01-10 | 2012-07-18 | 伍宏斌 | Method for producing micro-carbon ferromanganese |
| CN102816962A (en) * | 2011-06-08 | 2012-12-12 | 伍宏斌 | Low silicon high-purity manganese metal and preparation method thereof |
-
2000
- 2000-06-23 CN CN 00113501 patent/CN1331351A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102259171A (en) * | 2010-05-26 | 2011-11-30 | 伍宏斌 | Method for producing metal manganese block |
| CN102586669A (en) * | 2011-01-10 | 2012-07-18 | 伍宏斌 | Method for producing low-carbon ferromanganese |
| CN102586665A (en) * | 2011-01-10 | 2012-07-18 | 伍宏斌 | Method for producing micro-carbon ferromanganese |
| CN102816962A (en) * | 2011-06-08 | 2012-12-12 | 伍宏斌 | Low silicon high-purity manganese metal and preparation method thereof |
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