CN103643094A - Smelting method of high-carbon ferromanganese - Google Patents
Smelting method of high-carbon ferromanganese Download PDFInfo
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Abstract
The invention provides a smelting method of high-carbon ferromanganese, which comprises the following steps: heating to melt 20-30 parts by weight of steelmaking dust removal ash, 45-55 parts by weight of manganese ore, 3-5 parts by weight of quartz sand, 20-25 parts by weight of carbonous material and 0.5-1 part by weight of fluorite in a submerged arc furnace; after the furnace materials are molten, keeping the temperature, controlling the temperature of the molten iron in the melting bath in the furnace at 1550-1650 DEG C to obtain a high-carbon ferromanganese liquid and melting slag, and separating, wherein the obtained high-carbon ferromanganese liquid comprises the following components in percentage by weight: 50-60% of Mn, 7.0-7.5% of C, 2.5-4.5% of Si, at most 0.2% of P, at most 0.03% of S and the balance of iron. The method sufficiently and effectively utilizes metal iron resources in the steelmaking dust removal ash and metal manganese resources in the manganese ores, solves the environmental problem caused by abundant accumulation of the steelmaking dust removal ash in the steel enterprise, opens up a new way for sufficient and effective utilization of the manganese ore resources, and has the advantages of simple technique, high yield of metal iron and manganese, and low smelting cost.
Description
Technical field
The present invention relates to alloy smelting field, more particularly, relate to a kind of method that steel-making dedusting ash, manganese ore, carbonaceous material, quartz sand, fluorite be raw material smelting high carbon ferromanganese of take.
Background technology
High carbon ferromanganese is mainly that ferromanganese is a kind of reductor and alloying material with the most use in STEELMAKING PRODUCTION by manganese, two kinds of elementary composition alloys of iron.Ferromanganese, as alloying element additive, can strengthen hardness, ductility, toughness and the fastness to wear of steel.It is widely used in the steel alloys such as structure iron, tool steel, stainless refractory steel, wear resisting steel.Manganese also has desulfurization and reduces the harmful effect effect of sulphur.
Publication number is that the Chinese patent of CN103088244A discloses a kind of manganeseirom and preparation method.Its composition of this manganeseirom includes 50～70% manganese by weight percentage, 3～5% silicon, and the carbon lower than 1.0%, the phosphorus lower than 0.1%, the sulphur lower than 0.02%, is no more than other impurity of 2%, and surplus is iron.Its preparation method comprises: select percentage composition by weight to calculate carbon containing lower than 1.0% scrap steel, adding the calcium that accounts for steel weight 13～15% is dephosphorization agent, and wherein, calcium is that in dephosphorization agent, silicon weight content is 30～35%; After above-mentioned raw materials all melts, add slag supplying agent slag making, after slag making, add again deslagging agent slagging-off, keep furnace temperature at 1350 ± 30 ℃, then add successively manganese to refine, then tapping casting becomes ingot.In this application, the phosphorus of resulting manganeseirom and carbon content, lower than the requirement of steel, have solved phosphorus and the too high problem of carbon content in existing manganeseirom.
Publication number is that the Chinese patent of CN102586669A discloses a kind of method of producing low carbon ferromanganese, with electrolytic metal Mn sheet or electrolytic metal manganese powder, do raw material, add 0.5～30% iron, adopt intermediate frequency furnace by electrolytic metal Mn sheet and iron melting, when ingot casting, limit casting, limit is sprinkled into electrolytic metal Mn sheet or electrolytic metal manganese powder in mold, low carbon ferromanganese parcel electrolytic metal Mn sheet or the electrolytic metal manganese powder of melting form a whole ingot casting, then ingot casting is broken into low carbon ferromanganese.With with the low carbon ferromanganese that scorification is produced, compare completely, its product foreign matter content is lower slightly, product antioxidant property is identical, product energy consumption per ton will reduce greatly.
Publication number is the production method that the Chinese patent of CN101775508A discloses a kind of low carbon ferromanganese, this method is produced low carbon ferromanganese, the operation of three kinds of production method organic linking linkages of the outer shaking ladle dilution processing of refining slag hearth by the rich manganese slag of blast-furnace smelting, electric refining furnaces, smelt the whole hot charging heat of pilot process (liquid rich manganese slag → electric refining furnaces, liquid low-carbon (LC) silicomanganese → electric refining furnaces, the outer shaking ladle of refining slag → stove) and convert, produce the low carbon ferromanganese that meets national standard (GB/T3795-1996).Successfully solved the production difficult problem that main raw material resource is nervous, price is high, product comprehensive energy consumption is high, products production cost is high existing in existing low carbon ferromanganese production process.
Publication number is the production technique that the Chinese patent of CN101368244A discloses a kind of low carbon ferromanganese.After this production technique comprises and adds carboloy remover to melt by electric arc furnace with useless manganese powder or manganese-silicon, add again dephosphorization agent, desulfuration agent to send into shaking ladle and carry out preliminary desiliconization, thereby obtain the manganese-silicon of low-carbon (LC), low-phosphorous, low-sulfur, high silicon, then be poured in refining furnace, in refining furnace, add qualified manganese ore and unslaked lime, obtain the low carbon ferromanganese of high-quality.This invention production cost is low, save energy resource, has reduced environmental pollution, and waste residue can be used as cement mill raw material.
Yet above prior art does not all relate to the smelting process of high carbon ferromanganese.
Summary of the invention
For the deficiencies in the prior art, one of object of the present invention is to solve the one or more problems that exist in above-mentioned prior art.
One of object of the present invention is to provide a kind of method that steel-making dedusting ash, manganese ore, quartz sand, carbonaceous material and fluorite be raw material smelting high carbon ferromanganese of take.
To achieve these goals, the invention provides a kind of smelting process of high carbon ferromanganese.Described smelting process comprises the following steps: by weight, the fluorite of the steel-making dedusting ash of 20～30 parts, the manganese ore of 45～55 parts, the quartz sand of 3～5 parts, the carbonaceous material of 20～25 parts and 0.5～1 part is added and in mineral hot furnace, adds hot melt and divide; After furnace charge fusing, being incubated and controlling the molten iron temperature in molten bath in stove is 1550～1650 ℃, obtains high carbon ferromanganese liquid and molten minute slag; Described high carbon ferromanganese liquid and molten minute slag are carried out separated, the composition of the high carbon ferromanganese liquid obtaining is the iron of Mn50～60%, C7.0～7.5%, Si2.5～4.5%, P≤0.2%, S≤0.03% and surplus by weight percentage.
The smelting process of high carbon ferromanganese embodiment according to the present invention, described smelting process comprises by weight the fluorite of the steel-making dedusting ash of 22～28 parts, the manganese ore of 48～53 parts, the quartz sand of 3.5～4.5 parts, the carbonaceous material of 21～24 parts and 0.6～0.9 part is added and in mineral hot furnace, adds hot melt and divide.
The smelting process of high carbon ferromanganese embodiment according to the present invention, by weight percentage, contains SiO in described steel-making dedusting ash
25～8%, CaO15～25%, TFe50～70%, P≤0.1%, S≤0.05% and MnO1～2%.
According to the present invention, the smelting process of high carbon ferromanganese embodiment, by weight percentage, contains MnO40～60%, Fe in described manganese ore
2o
35～10%, CaO10～20%, SiO
210～20%, Al
2o
33～8%, MgO≤5%, P≤0.1% and S≤0.05%.
According to the present invention, the smelting process of high carbon ferromanganese embodiment, by weight percentage, contains SiO in described quartz sand
2>=90%, P≤0.01% and S≤0.01%.
The smelting process of high carbon ferromanganese embodiment according to the present invention, described carbonaceous material is carbon dust, it contains C by weight percentage
gu>=90%, P≤0.1% and S≤0.05%.
According to the present invention, the smelting process of high carbon ferromanganese embodiment, by weight percentage, contains CaF in described fluorite
2>=85%, SiO
25～10%, P≤0.1% and S≤0.05%.
The smelting process of high carbon ferromanganese embodiment according to the present invention, the granularity≤5mm of described steel-making dedusting ash, the granularity≤20mm of described manganese ore, the granularity≤3mm of described quartz sand, the granularity≤3mm of described carbonaceous material, the granularity≤10mm of described fluorite.
The smelting process of high carbon ferromanganese embodiment according to the present invention, the time of described insulation is 1～1.5 hour.
The smelting process of high carbon ferromanganese embodiment according to the present invention, the total amount that adds of described steel-making dedusting ash, manganese ore, quartz sand, carbonaceous material and fluorite is 10～13t.
The smelting process of high carbon ferromanganese embodiment according to the present invention, described smelting process also comprises carries out described high carbon ferromanganese liquid and molten minute slag separated, and described high carbon ferromanganese liquid cast, cooling and break process is obtained to high carbon ferromanganese alloy.
Compared with prior art, beneficial effect of the present invention comprises: utilizing steel-making dedusting ash, manganese ore is raw material, smelting cost is low, manganese metal resource in metallic iron resource and manganese ore in steel-making dedusting ash has been carried out fully effectively utilizing, solved the environmental problem that iron and steel enterprise causes due to steel-making dedusting ash bulk deposition, for manganese resource carries out fully effectively utilizing and having opened up new way.Have that technique is simple, metallic iron, manganese yield advantages of higher.
Embodiment
Hereinafter, in connection with exemplary embodiment, describe the smelting process according to high carbon ferromanganese of the present invention in detail.
Contriver finds, makes steel at present dedusting ash bulk deposition, the environmental problem that is not utilized effectively and causes, and the metallic iron that contains high level in steel-making dedusting ash, and for this reason, contriver proposes a kind of method that adopts steel-making dedusting ash smelting high carbon ferromanganese.
To adopt steel-making dedusting ash, manganese ore, quartz sand, carbonaceous material (for example, carbon dust) and fluorite be that raw material adds hot melt and divides (within molten minute, refer to and melt separated abbreviation) in mineral hot furnace to the smelting process of high carbon ferromanganese according to an exemplary embodiment of the present invention.By weight, the proportioning of each raw material is: 20～30 parts of dedusting ash of steel-making, 45～55 parts of manganese ores, 3～5 parts of quartz sands, 20～25 parts of carbon dusts, 0.5～1 part, fluorite, it is 10～13t that each raw material adds total amount.After furnace charge fusing, being incubated 1～1.5 hour and controlling the molten iron temperature in molten bath in stove is 1550～1650 ℃, obtains high carbon ferromanganese liquid and molten minute slag.After insulation, will melt a minute slag and put into slag ladle, and iron liquid be gone out to iron ladle, then be cast into fritter, after cooling, fragmentation, obtain high carbon ferromanganese alloy.The composition of described high carbon ferromanganese alloy is the iron of Mn50～60%, C7.0～7.5%, Si2.5～4.5%, P≤0.2%, S≤0.03% and surplus by weight percentage.
Wherein, in steel-making dedusting ash, contain SiO
25～8%, CaO15～25%, TFe50～70%, P≤0.1%, S≤0.05% and MnO1～2%, granularity≤5mm.In manganese ore, contain MnO40～60%, Fe
2o
35～10%, CaO10～20%, SiO
210～20%, Al
2o
33～8%, MgO≤5%, P≤0.1% and S≤0.05%, granularity≤20mm.In quartz sand, contain SiO
2>=90%, P≤0.01% and S≤0.01%, granularity≤3mm.In carbon dust, contain fixed carbon >=90%, P≤0.1% and S≤0.05%, granularity≤3mm.In fluorite, contain CaF
2>=85%, SiO
25～10%, P≤0.1% and S≤0.05%, granularity≤10mm.
Preferably, by weight, the proportioning of each raw material is 0.6～0.9 part, steel-making 22～28 parts of dedusting ash, 48～53 parts of manganese ores, 3.5～4.5 parts of quartz sands, 21～24 parts of carbonaceous materials and fluorite.
In the present invention, relating to principal reaction principle is: 1. each raw material is melted into liquid state after being heated in mineral hot furnace; 2. the carbon of melting reacts with the ferriferous oxide in iron liquid, is reduced to liquid metal iron; 3. the carbon of melting reacts with MnO, and the liquid manganese of generation that reduced enters into iron liquid.
The reason of each proportioning raw materials setting is: the setting that is first bessemer furnace slag and manganese ore proportioning is that (wherein the manganese in high carbon ferromanganese mainly comes from manganese ore based on the component content demand of manganese, iron being set in high carbon ferromanganese, iron mainly comes from dedusting ash, therefore can require to set out demand proportioning raw materials according to its component content).Next is that the setting of carbonaceous material proportioning is based on producing reduction reaction to the demand of carbon content in the demand of carbon, high carbon ferromanganese and setting according to the utilising efficiency of carbon.The setting of quartz sand, fluorite is to set based on needing to regulate good slag state and basicity in steel-making dedusting ash and the molten minute process of manganese ore.
That is to say, the effect that manganese ore, steel-making dedusting ash play is: the iron, the manganese element that provide high carbon ferromanganese to need, and composition will cause the change of high carbon ferromanganese composition greater or less than its ratio; Carbonaceous material (carbon dust) Main Function is to provide carbon and ferriferous oxide, V
2o
5reaction, a part of carbon also needs to fuse in iron liquid simultaneously, when the additional proportion of carbonaceous material is too small, under existing utilization ratio condition, iron oxidation, MnO can not be reduced fully completely, and the carbon content of fusing into iron liquid reduces, when the additional proportion of carbonaceous material is excessive, cause the waste of resource, and the carbon content of fusing into iron liquid exceeds cast iron upper range; The effect of quartz sand is to regulate slag state and the basicity of the molten minute process of raw material, reaches slag state better, is easy to the effect of slag iron separation, the add-on of quartz sand is excessive or too small, to cause slag state poor, slag iron separation difficulty, is unfavorable for the abundant efficient recovery of valuable resource in slag, dedusting ash.Acting on of fluorite regulates slag state, makes slag state better, is easy to slag iron separated, and add-on is too small, and slag state is thicker, slag iron separation difficulty, and add-on is excessive, serious to the etch of furnace lining, and causes the wasting of resources.
The setting of molten iron temperature is dissolve and reduction reaction demand occurs based on carbonaceous material, and the temperature losses of the process that taps a blast furnace is larger, for guaranteeing that iron enters in iron ladle with liquid state, needs suitable molten iron temperature.If molten iron temperature is too low, react abundant not, and because the temperature losses of the process that taps a blast furnace is larger, iron liquid does not enter iron ladle and solidifies, the difficulty of tapping a blast furnace.If molten iron temperature is too high, will cause electric power resource waste (mineral hot furnace melt raw material adopts electric power energy), make production cost increase.The setting of soaking time is too short, reacts insufficient in mineral hot furnace, if the setting of soaking time is long, makes the production time extend, and is unfavorable for organization of production, and the used time is caused electric power resource waste, makes production cost increase.
In order to understand better above-mentioned exemplary embodiment of the present invention, below in conjunction with concrete example, it is further described.
Example 1
The steel-making dedusting ash, the manganese ore of 51 parts, the quartz sand of 3.5 parts, the carbon dust of 22 parts, the fluorite of 0.5 part of 23 parts are by weight joined in mineral hot furnace, and total Intake Quantity 12t, adds hot melt and divides.After furnace charge fusing, be incubated 1 hour, in stove, iron liquid temp is 1560 ℃, obtains high carbon ferromanganese liquid and molten minute slag.After insulation, will melt a minute slag and put into slag ladle, and iron liquid be gone out to iron ladle, then be cast into fritter, after cooling, fragmentation, obtain high carbon ferromanganese alloy.This high carbon ferromanganese alloying constituent is: Mn53%, C7.3%, Si3.5%, P0.08%, S0.03%, surplus are iron.
Wherein, in steel-making dedusting ash, contain SiO
28%, CaO25%, TFe64.9%, P0.05%, S0.05% and MnO2%, granularity≤5mm.In manganese ore, contain MnO54%, Fe
2o
35%, CaO15%, SiO
215%, Al
2o
37%, MgO3.9%, P0.06% and S0.04%, granularity≤20mm.In quartz sand, contain SiO
290%, P0.01% and S0.005%, granularity≤3mm.In carbon dust, contain fixed carbon 92%, P0.05% and S0.05%, granularity≤3mm.In fluorite, contain CaF
290%, SiO
29.9%, P0.05% and S0.05%, granularity≤10mm.
Example 2
The steel-making dedusting ash, the manganese ore of 48 parts, the quartz sand of 4 parts, the carbon dust of 23 parts, the fluorite of 0.6 part of 24.4 parts are by weight joined in mineral hot furnace, and total Intake Quantity 13t, adds hot melt and divides.After furnace charge fusing, be incubated 1.5 hours, in stove, iron liquid temp is 1620 ℃, obtains high carbon ferromanganese liquid and molten minute slag.After insulation, will melt a minute slag and put into slag ladle, and iron liquid be gone out to iron ladle, then be cast into fritter, after cooling, fragmentation, obtain high carbon ferromanganese alloy.This high carbon ferromanganese alloying constituent is: Mn52%, C7.1%, Si3.0%, P0.1%, S0.02%, surplus are iron.
Wherein, in steel-making dedusting ash, contain SiO
27%, CaO22.9%, TFe68%, P0.06%, S0.04% and MnO2%, granularity≤5mm.In manganese ore, contain MnO55%, Fe
2o
35%, CaO14%, SiO
215%, Al
2o
38%, MgO2.9%, P0.07% and S0.03%, granularity≤20mm.In quartz sand, contain SiO
293%, P0.01% and S0.005%, granularity≤3mm.In carbon dust, contain fixed carbon 95%, P0.05% and S0.05%, granularity≤3mm.In fluorite, contain CaF
293%, SiO
26.9%, P0.05% and S0.05%, granularity≤10mm.
Example 3
The steel-making dedusting ash, the manganese ore of 45 parts, the quartz sand of 3 parts, the carbon dust of 25 parts, the fluorite of 1 part of 26 parts are by weight joined in mineral hot furnace, and total Intake Quantity 10t, adds hot melt and divides.After furnace charge fusing, be incubated 1 hour, in stove, iron liquid temp is 1600 ℃, obtains high carbon ferromanganese liquid and molten minute slag.After insulation, will melt a minute slag and put into slag ladle, and iron liquid be gone out to iron ladle, then be cast into fritter, after cooling, fragmentation, obtain high carbon ferromanganese alloy.This high carbon ferromanganese alloying constituent is: Mn50%, C7.5%, Si3.2%, P0.08%, S0.02%, surplus are iron.
Wherein, in steel-making dedusting ash, contain SiO
27.2%, CaO23.9%, TFe67%, P0.06%, S0.04% and MnO1.8%, granularity≤5mm.In manganese ore, contain MnO53%, Fe
2o
37%, CaO13%, SiO
216%, Al
2o
37%, MgO3.9%, P0.06% and S0.04%, granularity≤20mm.In quartz sand, contain SiO
290%, P0.01% and S0.005%, granularity≤3mm.In carbon dust, contain fixed carbon 96%, P0.05% and S0.05%, granularity≤3mm.In fluorite, contain CaF
295%, SiO
24.9%, P0.05% and S0.05%, granularity≤10mm.
Example 4
The steel-making dedusting ash, the manganese ore of 45 parts, the quartz sand of 3 parts, the carbon dust of 21 parts, the fluorite of 1 part of 30 parts are by weight joined in mineral hot furnace, and total Intake Quantity 11t, adds hot melt and divides.After furnace charge fusing, be incubated 1 hour, in stove, iron liquid temp is 1620 ℃, obtains high carbon ferromanganese liquid and molten minute slag.After insulation, will melt a minute slag and put into slag ladle, and iron liquid be gone out to iron ladle, then be cast into fritter, after cooling, fragmentation, obtain high carbon ferromanganese alloy.This high carbon ferromanganese alloying constituent is: Mn50%, C7.0%, Si2.5%, P0.06%, S0.015%, surplus are iron.
Wherein, in steel-making dedusting ash, contain SiO
28%, CaO24.9%, TFe65.2%, P0.06%, S0.04% and MnO1.8%, granularity≤5mm.In manganese ore, contain MnO60%, Fe
2o
35%, CaO12%, SiO
215%, Al
2o
35%, MgO2.9%, P0.06% and S0.04%, granularity≤20mm.In quartz sand, contain SiO
290%, P0.01% and S0.005%, granularity≤3mm.In carbon dust, contain fixed carbon 93%, P0.05% and S0.05%, granularity≤3mm.In fluorite, contain CaF
294%, SiO
25.9%, P0.05% and S0.05%, granularity≤10mm.
It is raw material that method of the present invention be take steel-making dedusting ash, manganese ore, quartz sand, carbon dust and fluorite, by rational proportioning raw materials, join in mineral hot furnace, adding hot melt divides, after furnace charge fusing, by controlling after suitable soaking time, obtain high carbon ferromanganese, have that technique is simple, a metallic iron, manganese yield advantages of higher.In addition, utilizing steel-making dedusting ash, manganese ore is raw material, smelting cost is low, and the manganese metal resource in metallic iron resource and manganese ore in steel-making dedusting ash has been carried out fully effectively utilizing, solved the environmental problem that iron and steel enterprise causes due to steel-making dedusting ash bulk deposition, meanwhile, for manganese resource carries out fully effectively utilizing and having opened up new way.
Although above by having described the present invention in conjunction with exemplary embodiment, it will be apparent to those skilled in the art that in the situation that do not depart from the spirit and scope that claim limits, can carry out various modifications and change to exemplary embodiment of the present invention.
Claims (10)
1. a smelting process for high carbon ferromanganese, is characterized in that, described smelting process comprises the following steps:
By weight, the fluorite of the steel-making dedusting ash of 20～30 parts, the manganese ore of 45～55 parts, the quartz sand of 3～5 parts, the carbonaceous material of 20～25 parts and 0.5～1 part is added and in mineral hot furnace, add hot melt and divide;
After furnace charge fusing, being incubated and controlling the molten iron temperature in molten bath in stove is 1550～1650 ℃, obtains high carbon ferromanganese liquid and molten minute slag;
Described high carbon ferromanganese liquid and molten minute slag are carried out separated, the composition of the high carbon ferromanganese liquid obtaining is the iron of Mn50～60%, C7.0～7.5%, Si2.5～4.5%, P≤0.2%, S≤0.03% and surplus by weight percentage.
2. the smelting process of high carbon ferromanganese according to claim 1, it is characterized in that, described smelting process comprises by weight the fluorite of the steel-making dedusting ash of 22～28 parts, the manganese ore of 48～53 parts, the quartz sand of 3.5～4.5 parts, the carbonaceous material of 21～24 parts and 0.6～0.9 part is added and in mineral hot furnace, adds hot melt and divide.
3. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, by weight percentage, in described steel-making dedusting ash, contains SiO
25～8%, CaO15～25%, TFe50～70%, P≤0.1%, S≤0.05% and MnO1～2%.
4. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, by weight percentage, contains MnO40～60%, Fe in described manganese ore
2o
35～10%, CaO10～20%, SiO
210～20%, Al
2o
33～8%, MgO≤5%, P≤0.1% and S≤0.05%.
5. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, by weight percentage, in described quartz sand, contains SiO
2>=90%, P≤0.01% and S≤0.01%.
6. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, described carbonaceous material is carbon dust, and it contains C by weight percentage
gu>=90%, P≤0.1% and S≤0.05%.
7. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, by weight percentage, in described fluorite, contains CaF
2>=85%, SiO
25～10%, P≤0.1% and S≤0.05%.
8. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, the granularity≤5mm of described steel-making dedusting ash, granularity≤the 20mm of described manganese ore, granularity≤the 3mm of described quartz sand, the granularity≤3mm of described carbonaceous material, the granularity≤10mm of described fluorite.
9. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, the time of described insulation is 1～1.5 hour.
10. the smelting process of high carbon ferromanganese according to claim 1, is characterized in that, described smelting process also comprises the cast of described high carbon ferromanganese liquid, cooling and break process are obtained to high carbon ferromanganese alloy.
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Cited By (4)
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| CN106119542A (en) * | 2016-07-18 | 2016-11-16 | 周三虎 | Silicon-manganese alloy smelting process |
| CN107723403A (en) * | 2017-09-01 | 2018-02-23 | 长沙东鑫环保材料有限责任公司 | A kind of method that manganese oxide ore prepares high carbon ferromanganese |
| CN110408780A (en) * | 2019-08-31 | 2019-11-05 | 中信锦州金属股份有限公司 | A kind of technique for smelting low-phosphorous manganeisen using high carbon ferromanganese liquid slag hot charging |
| CN111304437A (en) * | 2020-02-27 | 2020-06-19 | 钢铁研究总院 | Method for preparing high-carbon ferromanganese by using high-manganese slag |
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| CN101368244A (en) * | 2007-08-15 | 2009-02-18 | 周孝华 | Low-carbon ferromanganese manufacturing technique |
| CN102367516A (en) * | 2011-09-29 | 2012-03-07 | 云南文山斗南锰业股份有限公司 | Method for preparing high-carbon ferromanganese |
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| CN106119542A (en) * | 2016-07-18 | 2016-11-16 | 周三虎 | Silicon-manganese alloy smelting process |
| CN107723403A (en) * | 2017-09-01 | 2018-02-23 | 长沙东鑫环保材料有限责任公司 | A kind of method that manganese oxide ore prepares high carbon ferromanganese |
| CN107723403B (en) * | 2017-09-01 | 2019-05-24 | 长沙东鑫环保材料有限责任公司 | A kind of method that manganese oxide ore prepares high carbon ferromanganese |
| CN110408780A (en) * | 2019-08-31 | 2019-11-05 | 中信锦州金属股份有限公司 | A kind of technique for smelting low-phosphorous manganeisen using high carbon ferromanganese liquid slag hot charging |
| CN111304437A (en) * | 2020-02-27 | 2020-06-19 | 钢铁研究总院 | Method for preparing high-carbon ferromanganese by using high-manganese slag |
| CN111304437B (en) * | 2020-02-27 | 2021-06-29 | 钢铁研究总院 | Method for preparing high-carbon ferromanganese by using high-manganese slag |
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