CN103643094B - The smelting process of high carbon ferromanganese - Google Patents

The smelting process of high carbon ferromanganese Download PDF

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CN103643094B
CN103643094B CN201310611646.9A CN201310611646A CN103643094B CN 103643094 B CN103643094 B CN 103643094B CN 201310611646 A CN201310611646 A CN 201310611646A CN 103643094 B CN103643094 B CN 103643094B
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high carbon
carbon ferromanganese
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steel
smelting process
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CN103643094A (en
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蒋龙奎
戈文荪
何为
王敦旭
黄正华
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Pangang Group Research Institute Co Ltd
Pangang Group Panzhihua Steel and Vanadium Co Ltd
Pangang Group Xichang Steel and Vanadium Co Ltd
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Pangang Group Research Institute Co Ltd
Pangang Group Panzhihua Steel and Vanadium Co Ltd
Pangang Group Xichang Steel and Vanadium Co Ltd
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Abstract

The invention provides a kind of smelting process of high carbon ferromanganese.Described smelting process comprises the following steps: by weight, is added in mineral hot furnace by 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 to carry out adding hot melt and divide; After load melting, to be incubated and the molten iron temperature controlled in stove in molten bath is 1550 ~ 1650 DEG C, obtain high carbon ferromanganese liquid to be separated with melting point slag and carrying out slag liquid, the composition of the high carbon ferromanganese liquid obtained 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 present invention has carried out fully effectively utilizing to the manganese metal resource in metallic iron resource in steel-making dedusting ash and manganese ore, solve 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 opening new way, have that technique is simple, metallic iron, manganese yield are high, the low advantage of smelting cost.

Description

The smelting process of high carbon ferromanganese
Technical field
The present invention relates to alloy smelting field, more particularly, relate to a kind of to make steel the method that dedusting ash, manganese ore, carbonaceous material, quartz sand, fluorite be raw material smelting high carbon ferromanganese.
Background technology
High carbon ferromanganese is mainly by the alloy that manganese, iron two kinds are elementary composition, and ferromanganese is a kind of reductor with the most use in STEELMAKING PRODUCTION and alloying material.Ferromanganese, as alloying element additive, can strengthen the hardness of steel, ductility, toughness and fastness to wear.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 the manganese of 50 ~ 70% by weight percentage, and the silicon of 3 ~ 5%, lower than the carbon of 1.0%, lower than the phosphorus of 0.1%, lower than the sulphur of 0.02%, be no more than other impurity of 2%, surplus is iron.Its preparation method comprises: select percentage composition by weight to calculate carbon containing lower than the scrap steel of 1.0%, add the calcium system dephosphorization agent accounting for steel weight 13 ~ 15%, wherein, in calcium system dephosphorization agent, silicon weight content is 30 ~ 35%; After above-mentioned raw materials all melts, add slag supplying agent slag making, add deslagging agent slagging-off after slag making again, keep furnace temperature at 1350 ± 30 DEG C, then add manganese successively and refine, then tapping casting becomes ingot.The phosphorus of the manganeseirom obtained in this application and carbon content, lower than the requirement of steel, solve the phosphorus in existing manganeseirom and the too high problem of carbon content.
Publication number is that the Chinese patent of CN102586669A discloses a kind of method of producing low carbon ferromanganese, raw material is done with electrolytic metal Mn sheet or electrolytic metal manganese powder, add the iron of 0.5 ~ 30%, adopt intermediate frequency furnace by electrolytic metal Mn sheet and iron melting, when ingot casting, cast in limit, while be sprinkled in mold by electrolytic metal Mn sheet or electrolytic metal manganese powder, the low carbon ferromanganese parcel electrolytic metal Mn sheet of melting or electrolytic metal manganese powder form an overall ingot casting, then ingot casting is broken into low carbon ferromanganese.Compared with the low carbon ferromanganese produced with scorification completely, its product foreign matter content is lower slightly, and product antioxidant property is identical, and 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, blast-furnace smelting Mn-rich slag, electric refining furnaces are produced low carbon ferromanganese, the outer shaking ladle dilution process three productions method organic linking linkage operation of refining slag hearth by this method, smelt pilot process (the outer shaking ladle of liquid Mn-rich slag → electric refining furnaces, liquid low-carbon (LC) silicomanganese → electric refining furnaces, refining slag → stove) whole hot charging heat to convert, produce the low carbon ferromanganese meeting national standard (GB/T3795-1996).Successfully solve the difficult problem that production main raw material resource is nervous, price is high, product comprehensive energy consumption is high, products production cost is high existed 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.This production technique comprises and adds after carboloy remover melted by electric arc furnace with useless manganese powder or manganese-silicon, add dephosphorization agent again, desulfuration agent feeding shaking ladle carries out preliminary desiliconization, thus 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, namely obtain the low carbon ferromanganese of high-quality.This invention production cost is low, save energy resource, and decrease environmental pollution, waste residue can be used as cement mill raw material.
But 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, an object of the present invention is to solve in above-mentioned prior art the one or more problems existed.
An object of the present invention is to provide a kind of to make steel dedusting ash, manganese ore, quartz sand, carbonaceous material and the fluorite method for raw material smelting high carbon ferromanganese.
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, is added in mineral hot furnace by 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 to carry out adding hot melt and divide; After load melting, to be incubated and the molten iron temperature controlled in stove in molten bath is 1550 ~ 1650 DEG C, to obtain high carbon ferromanganese liquid and a molten point slag; Be separated with a molten point slag by described high carbon ferromanganese liquid, the composition of the high carbon ferromanganese liquid obtained 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.
According to an embodiment of the smelting process of high carbon ferromanganese of the present invention, described smelting process comprises being added in mineral hot furnace by 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 by weight carries out adding hot melt and divides.
According to an embodiment of the smelting process of high carbon ferromanganese of the present invention, by weight percentage, SiO is contained in described steel-making dedusting ash 25 ~ 8%, CaO15 ~ 25%, TFe50 ~ 70%, P≤0.1%, S≤0.05% and MnO1 ~ 2%.
According to an embodiment of the smelting process of high carbon ferromanganese of the present invention, by weight percentage, MnO40 ~ 60%, Fe is contained 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 an embodiment of the smelting process of high carbon ferromanganese of the present invention, by weight percentage, SiO is contained in described quartz sand 2>=90%, P≤0.01% and S≤0.01%.
According to an embodiment of the smelting process of high carbon ferromanganese of the present invention, described carbonaceous material is carbon dust, and it is by weight percentage containing C gu>=90%, P≤0.1% and S≤0.05%.
According to an embodiment of the smelting process of high carbon ferromanganese of the present invention, by weight percentage, CaF is contained in described fluorite 2>=85%, SiO 25 ~ 10%, P≤0.1% and S≤0.05%.
According to an embodiment of the smelting process of high carbon ferromanganese of 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.
According to an embodiment of the smelting process of high carbon ferromanganese of the present invention, the time of described insulation is 1 ~ 1.5 hour.
According to an embodiment of the smelting process of high carbon ferromanganese of 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.
According to an embodiment of the smelting process of high carbon ferromanganese of the present invention, described smelting process also comprises divides a slag to be separated with melting described high carbon ferromanganese liquid, and described high carbon ferromanganese liquid cast, cooling and break process are obtained high carbon ferromanganese alloy.
Compared with prior art, beneficial effect of the present invention comprises: utilization steel-making dedusting ash, manganese ore are raw material, smelting cost is low, carry out fully effectively utilizing to the manganese metal resource in metallic iron resource in steel-making dedusting ash and manganese ore, solve 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 opening new way.Have that technique is simple, metallic iron, manganese yield advantages of higher.
Embodiment
Hereinafter, the smelting process according to high carbon ferromanganese of the present invention will be described in detail in conjunction with exemplary embodiment.
Contriver finds, at present steel-making dedusting ash bulk deposition, is not utilized effectively and the environmental problem caused, and makes steel the metallic iron containing high level in dedusting ash, and for this reason, contriver proposes a kind of method adopting steel-making dedusting ash smelting high carbon ferromanganese.
The smelting process of high carbon ferromanganese adopts steel-making dedusting ash, manganese ore, quartz sand according to an exemplary embodiment of the present invention, carbonaceous material (such as, carbon dust) and fluorite be that raw material carries out adding hot melt and divides (molten point refers to the abbreviation that fusing is separated) in mineral hot furnace.By weight, the proportioning of each raw material is: steel-making dedusting ash 20 ~ 30 parts, manganese ore 45 ~ 55 parts, quartz sand 3 ~ 5 parts, carbon dust 20 ~ 25 parts, 0.5 ~ 1 part, fluorite, it is 10 ~ 13t that each raw material adds total amount.After load melting, be incubated 1 ~ 1.5 hour and the molten iron temperature controlled in stove in molten bath is 1550 ~ 1650 DEG C, obtain high carbon ferromanganese liquid and a molten point slag.After insulation, a molten point slag is put into slag ladle, iron liquid is gone out in iron ladle, then is 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, SiO is contained in steel-making dedusting ash 25 ~ 8%, CaO15 ~ 25%, TFe50 ~ 70%, P≤0.1%, S≤0.05% and MnO1 ~ 2%, granularity≤5mm.Containing MnO40 ~ 60%, Fe in manganese ore 2o 35 ~ 10%, CaO10 ~ 20%, SiO 210 ~ 20%, Al 2o 33 ~ 8%, MgO≤5%, P≤0.1% and S≤0.05%, granularity≤20mm.Containing SiO in quartz sand 2>=90%, P≤0.01% and S≤0.01%, granularity≤3mm.Containing fixed carbon >=90%, P≤0.1% and S≤0.05% in carbon dust, granularity≤3mm.Containing CaF in fluorite 2>=85%, SiO 25 ~ 10%, P≤0.1% and S≤0.05%, granularity≤10mm.
Preferably, by weight, the proportioning of each raw material is steel-making dedusting ash 22 ~ 28 parts, manganese ore 48 ~ 53 parts, quartz sand 3.5 ~ 4.5 parts, carbonaceous material 21 ~ 24 parts and 0.6 ~ 0.9 part, fluorite.
Relating to principal reaction principle in the present invention is: 1. each raw material is melted into liquid state after being heated in mineral hot furnace; 2. the ferriferous oxide in the carbon of melting and iron liquid reacts, and is reduced to liquid metal iron; 3. the carbon of melting and MnO react, and are reduced to generate liquid manganese and enter into iron liquid.
The reason that each proportioning raw materials is arranged is: be first the setting of bessemer furnace slag and manganese ore proportioning be that (manganese wherein in high carbon ferromanganese mainly comes from manganese ore based on setting the component content demand of manganese, iron 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).To be the setting of carbonaceous material proportioning be for next based on producing the demand of carbon content in the demand of reduction reaction to carbon, high carbon ferromanganese and setting according to the utilising efficiency of carbon.The setting of quartz sand, fluorite sets based on needing to regulate good slag state and basicity in steel-making dedusting ash and the molten point process of manganese ore.
That is, the effect that manganese ore, steel-making dedusting ash play is: the iron providing high carbon ferromanganese to need, manganese element, 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, Fe forms, 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 raw material to melt slag state and the basicity of point process, reaches slag state better, is easy to the effect of slag sluicing system, the add-on of quartz sand is excessive or too small, slag state will be caused poor, and slag sluicing system difficulty, is unfavorable for the abundant efficient recovery of valuable resource in slag, dedusting ash.Acting on of fluorite regulates slag state, and make slag state better, be easy to slag sluicing system, add-on is too small, and slag state is thicker, slag sluicing system 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 dissolved based on carbonaceous material and reduction reaction demand occurs, and the temperature losses of the process that taps a blast furnace is comparatively large, for ensureing that iron enters in iron ladle with liquid state, needs suitable molten iron temperature.If molten iron temperature is too low, reaction is abundant not, and owing to tapping a blast furnace temperature losses of the process comparatively greatly, iron liquid does not enter iron ladle and solidifies, difficulty of tapping a blast furnace.If molten iron temperature is too high, electric power resource will be caused to waste (mineral hot furnace melt raw material adopts electric power energy), make production cost increase.The setting of soaking time is too short, and in mineral hot furnace, reaction is insufficient, if the setting of soaking time is long, then makes the production time extend, be unfavorable for organization of production, the used time causes electric power resource to waste, and makes production cost increase.
In order to understand above-mentioned exemplary embodiment of the present invention better, below in conjunction with concrete example, it is further described.
Example 1
Join in mineral hot furnace by 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 by weight, total Intake Quantity 12t, carries out adding hot melt and divides.After load melting, carry out insulation 1 hour, in stove, bonded hard ferrite magnet is 1560 DEG C, obtains high carbon ferromanganese liquid and molten point slag.After insulation, a molten point slag is put into slag ladle, iron liquid is gone out in iron ladle, then is 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, SiO is contained in steel-making dedusting ash 28%, CaO25%, TFe64.9%, P0.05%, S0.05% and MnO2%, granularity≤5mm.Containing MnO54%, Fe in manganese ore 2o 35%, CaO15%, SiO 215%, Al 2o 37%, MgO3.9%, P0.06% and S0.04%, granularity≤20mm.Containing SiO in quartz sand 290%, P0.01% and S0.005%, granularity≤3mm.Containing fixed carbon 92%, P0.05% and S0.05% in carbon dust, granularity≤3mm.Containing CaF in fluorite 290%, SiO 29.9%, P0.05% and S0.05%, granularity≤10mm.
Example 2
Join in mineral hot furnace by 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 by weight, total Intake Quantity 13t, carries out adding hot melt and divides.After load melting, carry out insulation 1.5 hours, in stove, bonded hard ferrite magnet is 1620 DEG C, obtains high carbon ferromanganese liquid and molten point slag.After insulation, a molten point slag is put into slag ladle, iron liquid is gone out in iron ladle, then is 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, SiO is contained in steel-making dedusting ash 27%, CaO22.9%, TFe68%, P0.06%, S0.04% and MnO2%, granularity≤5mm.Containing MnO55%, Fe in manganese ore 2o 35%, CaO14%, SiO 215%, Al 2o 38%, MgO2.9%, P0.07% and S0.03%, granularity≤20mm.Containing SiO in quartz sand 293%, P0.01% and S0.005%, granularity≤3mm.Containing fixed carbon 95%, P0.05% and S0.05% in carbon dust, granularity≤3mm.Containing CaF in fluorite 293%, SiO 26.9%, P0.05% and S0.05%, granularity≤10mm.
Example 3
Join in mineral hot furnace by 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 by weight, total Intake Quantity 10t, carries out adding hot melt and divides.After load melting, carry out insulation 1 hour, in stove, bonded hard ferrite magnet is 1600 DEG C, obtains high carbon ferromanganese liquid and molten point slag.After insulation, a molten point slag is put into slag ladle, iron liquid is gone out in iron ladle, then is 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, SiO is contained in steel-making dedusting ash 27.2%, CaO23.9%, TFe67%, P0.06%, S0.04% and MnO1.8%, granularity≤5mm.Containing MnO53%, Fe in manganese ore 2o 37%, CaO13%, SiO 216%, Al 2o 37%, MgO3.9%, P0.06% and S0.04%, granularity≤20mm.Containing SiO in quartz sand 290%, P0.01% and S0.005%, granularity≤3mm.Containing fixed carbon 96%, P0.05% and S0.05% in carbon dust, granularity≤3mm.Containing CaF in fluorite 295%, SiO 24.9%, P0.05% and S0.05%, granularity≤10mm.
Example 4
Join in mineral hot furnace by 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 by weight, total Intake Quantity 11t, carries out adding hot melt and divides.After load melting, carry out insulation 1 hour, in stove, bonded hard ferrite magnet is 1620 DEG C, obtains high carbon ferromanganese liquid and molten point slag.After insulation, a molten point slag is put into slag ladle, iron liquid is gone out in iron ladle, then is 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, SiO is contained in steel-making dedusting ash 28%, CaO24.9%, TFe65.2%, P0.06%, S0.04% and MnO1.8%, granularity≤5mm.Containing MnO60%, Fe in manganese ore 2o 35%, CaO12%, SiO 215%, Al 2o 35%, MgO2.9%, P0.06% and S0.04%, granularity≤20mm.Containing SiO in quartz sand 290%, P0.01% and S0.005%, granularity≤3mm.Containing fixed carbon 93%, P0.05% and S0.05% in carbon dust, granularity≤3mm.Containing CaF in fluorite 294%, SiO 25.9%, P0.05% and S0.05%, granularity≤10mm.
Method of the present invention is to make steel dedusting ash, manganese ore, quartz sand, carbon dust and fluorite for raw material, join in mineral hot furnace by rational proportioning raw materials, carry out adding hot melt to divide, after load melting, after controlling suitable soaking time, obtain high carbon ferromanganese, have that technique is simple, metallic iron, manganese yield advantages of higher.In addition, utilization steel-making dedusting ash, manganese ore are raw material, smelting cost is low, and carry out fully effectively utilizing to the manganese metal resource in metallic iron resource in steel-making dedusting ash and manganese ore, solve 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 opening new way.
Although above by describing the present invention in conjunction with exemplary embodiment, it will be apparent to those skilled in the art that when not departing from the spirit and scope that claim limits, various amendment and change can be carried out to exemplary embodiment of the present invention.

Claims (5)

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 in mineral hot furnace and carries out adding hot melt and divide, wherein, by weight percentage, SiO is contained in described steel-making dedusting ash 25 ~ 8%, CaO 15 ~ 25%, TFe 50 ~ 70%, P≤0.1%, S≤0.05% and MnO 1 ~ 2%, containing MnO 40 ~ 60%, Fe in described manganese ore 2o 35 ~ 10%, CaO 10 ~ 20%, SiO 210 ~ 20%, Al 2o 33 ~ 8%, MgO≤5%, P≤0.1% and S≤0.05%, containing SiO in described quartz sand 2>=90%, P≤0.01% and S≤0.01%, containing CaF in described fluorite 2>=85%, SiO 25 ~ 10%, P≤0.1% and S≤0.05%; Described carbonaceous material is carbon dust, and it is by weight percentage containing C gu>=90%, P≤0.1% and S≤0.05%;
After load melting, to be incubated and the molten iron temperature controlled in stove in molten bath is 1550 ~ 1650 DEG C, to obtain high carbon ferromanganese liquid and a molten point slag;
Be separated with a molten point slag by described high carbon ferromanganese liquid, the composition of the high carbon ferromanganese liquid obtained is the iron of Mn 50 ~ 60%, C 7.0 ~ 7.5%, Si 2.5 ~ 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 being added in mineral hot furnace by 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 by weight carries out adding hot melt and divides.
3. 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.
4. 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.
5. 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 high carbon ferromanganese alloy.
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CN106119542B (en) * 2016-07-18 2018-11-02 周三虎 Silicon-manganese alloy smelting process
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
CN110408780B (en) * 2019-08-31 2021-07-06 中信锦州金属股份有限公司 Process for smelting low-phosphorus ferromanganese alloy by hot charging high-carbon ferromanganese liquid 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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