CN102367524A - Smelting method of manganese alloy - Google Patents
Smelting method of manganese alloy Download PDFInfo
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- CN102367524A CN102367524A CN201110298267XA CN201110298267A CN102367524A CN 102367524 A CN102367524 A CN 102367524A CN 201110298267X A CN201110298267X A CN 201110298267XA CN 201110298267 A CN201110298267 A CN 201110298267A CN 102367524 A CN102367524 A CN 102367524A
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Abstract
The invention discloses a smelting method of a manganese alloy. The smelting method comprises the following steps of: A) mixing manganese ores and auxiliary materials evenly according to a preset ratio to obtain a mixed feeding material, wherein the manganese ores contain manganese oxide ores and manganese carbonate ores of which the weight content is no more than 20%; B) adding the mixed feeding material obtained in the step A) in an electric furnace to smelt and obtain fused slurry containing the manganese alloy; and C) separating the fused slurry obtained in the step B) to obtain the manganese alloy, and pouring to obtain the manganese alloy finished product. According to the smelting method of the manganese alloy in the embodiment of the invention, the smelting cost of the manganese alloy can be greatly reduced and the pollution to the environment can be greatly lowered.
Description
Technical field
The present invention relates to field of metallurgy, in particular to a kind of smelting process of manganese alloy.
Background technology
When utilizing manganese ore to smelt manganese alloy, before going into the stove smelting, need carry out roasting to remove carbonic acid gas to the manganese carbonate ore in the manganese ore, just can go into stove through the manganese carbonate ore after the roasting and use.Manganese carbonate ore generates manganese oxide and carbonic acid gas in roasting process.Wherein, The maturing temperature of manganese carbonate ore generally will reach 1423K; Because maturing temperature is too high; Not only to consume a large amount of fuel (improved cost, increased pollution), and the more important thing is the continuous oxidized generation manganic oxide of the manganese oxide that obtains after the roasting, trimanganese tetroxide and Manganse Dioxide, thereby reduce the manganese grade widely environment.The chemical equation of manganese carbonate ore in roasting process is as follows.
Summary of the invention
The present invention is intended to solve at least one of technical problem that exists in the prior art.
For this reason, one object of the present invention is to propose a kind of smelting process of the manganese alloy that can reduce production costs widely.
To achieve these goals; A kind of smelting process of manganese alloy is proposed according to embodiments of the invention; Said smelting process may further comprise the steps: A) manganese ore and auxiliary material are mixed to obtain parallel feeding by predetermined proportion, wherein said manganese ore comprises manganese oxide ore and weight content is not more than 20% manganese carbonate ore; B) with said steps A) parallel feeding that obtains adds the molten slurry of smelting and obtain containing manganese alloy in the electric furnace; With C) from said step B) separate said manganese alloy the molten slurry that obtains, and pour into a mould, so that obtain the manganese alloy finished product.
The contriver finds through bold exploration and test repeatedly; As long as the weight content directly into manganese carbonate ore in the manganese ore of stove is not more than 20% (weight percent that is manganese carbonate ore and manganese ore is not more than 20%), manganese carbonate ore decomposes the carbonic acid gas that produces just can not produce adverse influence to the smelting of manganese alloy.Because manganese carbonate ore can be smelted directly into stove, therefore not only can save the required equipment of roasting manganese carbonate ore, and can reduce the usage quantity of fuel widely and then reduce pollution widely environment.Smelting process according to the manganese alloy of the embodiment of the invention can reduce the cost that manganese alloy is smelted widely.Wherein, the production cost of high carbon ferromanganese has descended about 62 yuan/ton, calculates to produce 300,000 tons of high carbon ferromanganeses every year, can save about 18,600,000 yuan every year.The production cost of manganese silicon has descended about 55 yuan/ton, calculates to produce 300,000 tons of manganese silicon every year, can save about 16,500,000 yuan every year.Therefore, the smelting process of said manganese alloy can produce huge economic benefit.
In addition, the smelting process according to the embodiment of the invention can have following additional technical characterictic:
According to one embodiment of present invention, said auxiliary material comprises coke, and the weight ratio of wherein said manganese ore and said coke is 1: 0.16-0.22.
According to one embodiment of present invention, the weight ratio of said manganese ore and said coke is 1: 0.18-0.20.
According to one embodiment of present invention, the granularity of said manganese ore is 5cm-15cm, and the granularity of said coke is 3cm-5cm.
According to one embodiment of present invention, the granularity of said manganese ore is 10cm, and the granularity of said coke is 4cm.
According to one embodiment of present invention, said auxiliary material comprises silica, coke and rhombspar, and the weight ratio of wherein said manganese ore, said silica, said coke and said rhombspar is 1: (0.10-0.20): (0.20-0.26): (0.05-0.10).
According to one embodiment of present invention, the weight ratio of said manganese ore, said silica, said coke and said rhombspar is 1: (0.14-0.16): (0.22-0.24): (0.06-0.08).
According to one embodiment of present invention, the granularity of said manganese ore is 5cm-15cm, and the granularity of said silica is that the granularity of 3cm-5cm, said coke is that the granularity of 3cm-5cm, said rhombspar is 5cm-10cm.
According to one embodiment of present invention, the granularity of said manganese ore is 10cm, and the granularity of said silica is that the granularity of 4cm, said coke is that the granularity of 4cm, said rhombspar is 8cm.
According to one embodiment of present invention, said electric furnace is the three-phase resistance stove, and the primary current of wherein said electric furnace is 220-300A, and the secondary voltage of said electric furnace is 140-160V.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize through practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage obviously with are easily understood becoming the description of embodiment from combining figs, wherein:
Fig. 1 is the schema according to the smelting process of the manganese alloy of the embodiment of the invention.
Embodiment
Describe embodiments of the invention below in detail, the example of said embodiment is shown in the drawings, and wherein identical from start to finish or similar label is represented identical or similar elements or the element with identical or similar functions.Be exemplary through the embodiment that is described with reference to the drawings below, only be used to explain the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention; It will be appreciated that; Term " vertically ", " laterally ", " on ", the orientation of indications such as D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward " or position relation be for based on orientation shown in the drawings or position relation; Only be to describe with simplifying for the ease of describing the present invention; Rather than the device or the element of indication or hint indication must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used to describe purpose, and can not be interpreted as indication or hint relative importance.
In description of the invention, unless otherwise prescribed and limit, need to prove; Term " installation ", " linking to each other ", " connection " should be done broad understanding, for example, can be mechanical connection or electrical connection; Also can be the connection of two element internals, can be directly to link to each other, and also can link to each other indirectly through intermediary; For those of ordinary skill in the art, can understand the concrete implication of above-mentioned term as the case may be.
In the smelting process of existing manganese alloy, all be earlier manganese carbonate ore to be carried out roasting, think and can remove the carbonic acid gas in the manganese carbonate ore through roasting.And directly manganese carbonate ore is joined in the manganese alloy smelting furnace (for example electric furnace); The carbon dioxide gas that manganese carbonate ore decompose to produce is known from experience and is caused that the smelting furnace internal gas pressure is too high, the thorn fire, turns over slag, working of a furnace variation, equipment burn out rate rising in the smelting furnace, the decline of smelting furnace operating rate, the rising of slag manganese etc.
But the contriver finds through bold exploration and test repeatedly; As long as the consumption of manganese carbonate ore is controlled within the specific limits; Can manganese carbonate ore directly be joined in the smelting furnace without roasting fully, and the carbonic acid gas that the manganese carbonate ore decomposition produces can not produce adverse influence to the smelting of manganese alloy.Therefore, overcome in the prior art manganese carbonate ore according to the smelting process of the manganese alloy of the embodiment of the invention and can not smelt this technological prejudice directly into stove.
With reference to Fig. 1 the smelting process according to the manganese alloy of the embodiment of the invention is described below.As shown in Figure 1, the smelting process of said manganese alloy may further comprise the steps:
A) manganese ore and auxiliary material are mixed to obtain parallel feeding by predetermined proportion, wherein said manganese ore comprises manganese oxide ore and weight content is not more than 20% manganese carbonate ore;
B) with said steps A) parallel feeding that obtains adds the molten slurry of smelting and obtain containing manganese alloy in the electric furnace; With
C) from said step B) separate said manganese alloy the molten slurry that obtains, and pour into a mould, so that obtain the manganese alloy finished product.
The contriver finds through bold exploration and test repeatedly; As long as the weight content directly into manganese carbonate ore in the manganese ore of stove is not more than 20% (weight percent that is manganese carbonate ore and manganese ore is not more than 20%), manganese carbonate ore decomposes the carbonic acid gas that produces just can not produce adverse influence to the smelting of manganese alloy.Because manganese carbonate ore can be smelted directly into stove, therefore not only can save the required equipment of roasting manganese carbonate ore, and can reduce the usage quantity of fuel widely and then reduce pollution widely environment.Smelting process according to the manganese alloy of the embodiment of the invention can reduce the cost that manganese alloy is smelted widely.Wherein, the production cost of high carbon ferromanganese has descended about 62 yuan/ton, to produce 300,000 tons of high carbon ferromanganeses every year, can save about 18,600,000 yuan every year.The production cost of manganese silicon has descended about 55 yuan/ton, to produce 300,000 tons of manganese silicon every year, can save about 16,500,000 yuan every year.Therefore, the smelting process of said manganese alloy can produce huge economic benefit.
When smelting high carbon ferromanganese, said auxiliary material can comprise coke.Advantageously, the weight ratio of said manganese ore and said coke can be 1: 0.16-0.22.When the weight ratio of said coke and said manganese ore during, can cause manganese oxide in the said manganese ore can not be reduced to the carbide of manganese fully less than 0.16: 1.When the weight ratio of said coke and said manganese ore during greater than 0.22: 1; Said coke and carbonic acid gas (mainly decomposed by said manganese carbonate ore and produce) reaction produces a large amount of carbon monoxide; Thereby cause that the smelting furnace internal gas pressure is too high, thorn fire, turn over slag, working of a furnace variation, equipment burn out rate rising in the smelting furnace, the decline of smelting furnace operating rate, the rising of slag manganese etc.Further advantageously, the weight ratio of said manganese ore and said coke can be 1: 0.18-0.20.Further advantageously, the weight ratio of said manganese ore and said coke can be 1: 0.19.
The granularity of said manganese ore and the granularity of said coke also exert an influence to the smelting of high carbon ferromanganese.Advantageously, the granularity of said manganese ore can be 5cm-15cm, and the granularity of said coke can be 3cm-5cm.When the granularity of said manganese ore greater than the granularity of 15cm, said coke during greater than 5cm, not only bad for sorting of said manganese ore, and be unfavorable for heat transmission, reduced the efficient of smelting.When the granularity of said manganese ore less than the granularity of 5cm, said coke during less than 3cm; Can cause between manganese ore particle and the manganese ore particle, the slit between coke granule and the coke granule, between manganese ore particle and the coke granule is too small, is unfavorable for that therefore gas, particularly said manganese carbonate ore in the smelting furnace decomposes the carbonic acid gas that produces and discharge smelting furnace in time.
Further advantageously; The granularity of said manganese ore can be 10cm; The granularity of said coke can be 4cm; The carbonic acid gas that said manganese carbonate ore decomposition produces under this granularity can be discharged smelting furnace in time, and said like this manganese carbonate ore decomposes the carbonic acid gas that produces can not produce any adverse influence to the smelting of high carbon ferromanganese.
When smelting silicomanganese, said auxiliary material can comprise silica, coke and rhombspar.Advantageously, the weight ratio of said manganese ore, said silica, said coke and said rhombspar can be 1: (0.10-0.20): (0.20-0.26): (0.05-0.10).Further advantageously, the weight ratio of said manganese ore, said silica, said coke and said rhombspar is 1: (0.14-0.16): (0.22-0.24): (0.06-0.08).Further advantageously, the weight ratio of said manganese ore, said silica, said coke and said rhombspar is 1: 0.15: 0.23: 0.07.
The granularity of said manganese ore, said silica, said coke and said rhombspar also exerts an influence to the smelting of silicomanganese.Advantageously, the granularity of said manganese ore can be 5cm-15cm, and the granularity of said silica can be that the granularity of 3cm-5cm, said coke can be that the granularity of 3cm-5cm, said rhombspar can be 5cm-10cm.When the granularity of said manganese ore greater than the granularity of 15cm, said silica greater than the granularity of 5cm, said coke greater than the granularity of 5cm, said rhombspar during greater than 10cm; Not only bad for sorting of said manganese ore, and be unfavorable for heat transmission, reduced the efficient of smelting.When the granularity of said manganese ore less than the granularity of 5cm, said silica less than the granularity of 3cm, said coke less than the granularity of 3cm, said rhombspar during less than 5cm; Can cause the slit between the particle too small, be unfavorable for that therefore the interior gas of smelting furnace, particularly said manganese carbonate ore decompose the carbonic acid gas that produces and discharge smelting furnace in time.
Further advantageously; The granularity of said manganese ore can be 10cm; The granularity of said silica can be 4cm, and the granularity of said coke is 4cm, and the granularity of said rhombspar can be 8m; The carbonic acid gas that said manganese carbonate ore decomposition produces under this granularity can be discharged smelting furnace in time, and said like this manganese carbonate ore decomposes the carbonic acid gas that produces can not produce any adverse influence to the smelting of silicomanganese.
Can utilize electrosmelting manganese alloy (for example high carbon ferromanganese and silicomanganese).Wherein, said electric furnace can be the three-phase resistance stove.When smelting manganese alloy, the primary current of said electric furnace can be 220A-300A, and the secondary voltage of said electric furnace can be 140V-160V, can make the temperature in the electric furnace satisfy the smelting needs better like this.Advantageously, when smelting manganese alloy, the primary current of said electric furnace can be 230A, and the secondary voltage of said electric furnace can be 150V.
Embodiment 1
With granularity is that the manganese ore of 5cm and coke that granularity is 3cm mix to obtain being used for the parallel feeding of smelting high carbon ferromanganese according to weight ratio at 1: 0.16.Wherein, the weight content of the manganese carbonate ore in the said manganese ore is 10%.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 220A, secondary voltage are 140V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains high carbon ferromanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains high carbon ferromanganese in the hot metal ladle is carried out slag iron and separate (promptly from said molten slurry, separating high carbon ferromanganese) and cast, and obtain up-to-standard high carbon ferromanganese finished product.In this embodiment, the taste of said manganese ore is 31.50%, the recovery is 77.30%, and the production cost of high carbon ferromanganese is 5498.54 yuan/ton.
Embodiment 2
With granularity is that the manganese ore of 15cm and coke that granularity is 5cm mix to obtain being used for the parallel feeding of smelting high carbon ferromanganese according to weight ratio at 1: 0.22.Wherein, the weight content of the manganese carbonate ore in the said manganese ore is 15%.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 300A, secondary voltage are 160V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains high carbon ferromanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains high carbon ferromanganese in the hot metal ladle is carried out separation of slag iron and cast, and obtain up-to-standard high carbon ferromanganese finished product.In this embodiment, the taste of said manganese ore is 31.40%, the recovery is 77.28%, and the production cost of high carbon ferromanganese is 5470.54 yuan/ton.
Embodiment 3
With granularity is that the manganese ore of 10cm and coke that granularity is 4cm mix to obtain being used for the parallel feeding of smelting high carbon ferromanganese according to weight ratio at 1: 0.19.Wherein, the weight content of the manganese carbonate ore in the said manganese ore is 20%.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 260A, secondary voltage are 150V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains high carbon ferromanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains high carbon ferromanganese in the hot metal ladle is carried out separation of slag iron and cast, and obtain up-to-standard high carbon ferromanganese finished product.In this embodiment, the taste of said manganese ore is 31.31%, the recovery is 77.31%, and the production cost of high carbon ferromanganese is 5445.5 yuan/ton.
Comparative Examples 1
Be that manganese carbonate ore in the manganese ore of 10cm carries out roasting with granularity at first, the weight content of the manganese carbonate ore in the wherein said manganese ore is 20%.Be that the coke of 4cm mixes to obtain being used for the parallel feeding of smelting high carbon ferromanganese according to weight ratio at 1: 0.19 with said manganese ore and granularity then.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 260A, secondary voltage are 150V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains high carbon ferromanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains high carbon ferromanganese in the hot metal ladle is carried out separation of slag iron and cast, and obtain up-to-standard high carbon ferromanganese finished product.In this embodiment, the taste of said manganese ore is 31.33%, the recovery is 77.20%, and the production cost of high carbon ferromanganese is 5507.5 yuan/ton.
Embodiment 4
The rhombspar that granularity is the manganese ore of 5cm, silica that granularity is 3cm, granularity is 3cm coke and granularity are 5cm was according to weight ratio 1: 0.10: 0.20: 0.05 mixes to obtain being used to smelt the parallel feeding of silicomanganese.Wherein, the weight content of the manganese carbonate ore in the said manganese ore is 10%.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 220A, secondary voltage are 140V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains silicomanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains silicomanganese in the hot metal ladle is carried out slag iron and separate (promptly from said molten slurry, separating silicomanganese) and cast, and obtain up-to-standard silicomanganese finished product.In this embodiment, the taste of said manganese ore is 32.01%, the recovery is 81.20%, and the production cost of silicomanganese is 7065.54 yuan/ton.
Embodiment 5
The rhombspar that granularity is the manganese ore of 15cm, silica that granularity is 5cm, granularity is 5cm coke and granularity are 10cm was according to weight ratio 1: 0.20: 0.26: 0.10 mixes to obtain being used to smelt the parallel feeding of silicomanganese.Wherein, the weight content of the manganese carbonate ore in the said manganese ore is 15%.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 300A, secondary voltage are 160V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains silicomanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains silicomanganese in the hot metal ladle is carried out separation of slag iron and cast, and obtain up-to-standard silicomanganese finished product.In this embodiment, the taste of said manganese ore is 31.96%, the recovery is 81.22%, and the production cost of silicomanganese is 7035.65 yuan/ton.
Embodiment 6
The rhombspar that granularity is the manganese ore of 10cm, silica that granularity is 4cm, granularity is 4cm coke and granularity are 8cm was according to weight ratio 1: 0.15: 0.23: 0.07 mixes to obtain being used to smelt the parallel feeding of silicomanganese.Wherein, the weight content of the manganese carbonate ore in the said manganese ore is 20%.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 260A, secondary voltage are 150V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains silicomanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains silicomanganese in the hot metal ladle is carried out separation of slag iron and cast, and obtain up-to-standard silicomanganese finished product.In this embodiment, the taste of said manganese ore is 31.87%, the recovery is 81.18%, and the production cost of silicomanganese is 7010.51 yuan/ton.
Comparative Examples 2
Be that manganese carbonate ore in the manganese ore of 10cm carries out roasting with granularity at first, the weight content of the manganese carbonate ore in the wherein said manganese ore is 20%.Be the silica of 4cm, coke that granularity is 4cm and the granularity rhombspar that is 8cm according to weight ratio 1: 0.15: 0.23 with said manganese ore, granularity then: 0.07 mixes to obtain being used to smelt the parallel feeding of silicomanganese.Above-mentioned parallel feeding joined in the three-phase resistance stove smelt, the primary current of said three-phase resistance stove is that 260A, secondary voltage are 150V.Every opened said three-phase resistance stove at a distance from four hours and the molten slurry that contains silicomanganese in the said three-phase resistance stove is poured in the hot metal ladle.Subsequently the molten slurry that contains silicomanganese in the hot metal ladle is carried out separation of slag iron and cast, and obtain up-to-standard silicomanganese finished product.In this embodiment, the taste of said manganese ore is 31.89%, the recovery is 81.02%, and the production cost of silicomanganese is 7075.54 yuan/ton.
Can find out by embodiment 1-6 and Comparative Examples 1-2, can reduce the cost that manganese alloy is smelted widely according to the smelting process of the manganese alloy of the embodiment of the invention.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means the concrete characteristic, structure, material or the characteristics that combine this embodiment or example to describe and is contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete characteristic, structure, material or the characteristics of description can combine with suitable manner in any one or more embodiment or example.
Although illustrated and described embodiments of the invention; Those having ordinary skill in the art will appreciate that: under the situation that does not break away from principle of the present invention and aim, can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited claim and equivalent thereof.
Claims (10)
1. the smelting process of a manganese alloy, said smelting process may further comprise the steps:
A) manganese ore and auxiliary material are mixed to obtain parallel feeding by predetermined proportion, wherein said manganese ore comprises manganese oxide ore and weight content is not more than 20% manganese carbonate ore;
B) with said steps A) parallel feeding that obtains adds the molten slurry of smelting and obtain containing manganese alloy in the electric furnace; With
C) from said step B) separate said manganese alloy the molten slurry that obtains, and pour into a mould, so that obtain the manganese alloy finished product.
2. smelting process according to claim 1 is characterized in that said auxiliary material comprises coke, and the weight ratio of wherein said manganese ore and said coke is 1: 0.16-0.22.
3. smelting process according to claim 2 is characterized in that, the weight ratio of said manganese ore and said coke is 1: 0.18-0.20.
4. smelting process according to claim 2 is characterized in that, the granularity of said manganese ore is 5cm-15cm, and the granularity of said coke is 3cm-5cm.
5. smelting process according to claim 4 is characterized in that, the granularity of said manganese ore is 10cm, and the granularity of said coke is 4cm.
6. smelting process according to claim 1; It is characterized in that; Said auxiliary material comprises silica, coke and rhombspar, and the weight ratio of wherein said manganese ore, said silica, said coke and said rhombspar is 1: (0.10-0.20): (0.20-0.26): (0.05-0.10).
7. smelting process according to claim 6 is characterized in that, the weight ratio of said manganese ore, said silica, said coke and said rhombspar is 1: (0.14-0.16): (0.22-0.24): (0.06-0.08).
8. smelting process according to claim 6 is characterized in that, the granularity of said manganese ore is 5cm-15cm, and the granularity of said silica is that the granularity of 3cm-5cm, said coke is that the granularity of 3cm-5cm, said rhombspar is 5cm-10cm.
9. smelting process according to claim 8 is characterized in that, the granularity of said manganese ore is 10cm, and the granularity of said silica is that the granularity of 4cm, said coke is that the granularity of 4cm, said rhombspar is 8cm.
10. according to each described smelting process among the claim 1-9, it is characterized in that said electric furnace is the three-phase resistance stove, the primary current of wherein said electric furnace is 220-300A, and the secondary voltage of said electric furnace is 140-160V.
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| CN106756350A (en) * | 2017-01-18 | 2017-05-31 | 中信锦州金属股份有限公司 | Half manganese carbonate ore smelts the production technology of medium-low carbon ferromanganese |
| CN107541609A (en) * | 2016-06-23 | 2018-01-05 | 陕西友力实业有限公司 | A kind of manganese alloy smelting process |
| CN113981210A (en) * | 2021-10-29 | 2022-01-28 | 吉铁铁合金有限责任公司 | Production process for producing manganese series ferroalloy by roasting manganese ore |
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| CN103219561A (en) * | 2013-03-28 | 2013-07-24 | 四川天齐锂业股份有限公司 | Method for recovering lithium manganate battery anode material |
| CN107541609A (en) * | 2016-06-23 | 2018-01-05 | 陕西友力实业有限公司 | A kind of manganese alloy smelting process |
| CN106086558A (en) * | 2016-08-25 | 2016-11-09 | 广西蒙山县水电铁合金厂 | A kind of smelting process of the conversion ratio improving manganese-silicon |
| CN106119642A (en) * | 2016-08-25 | 2016-11-16 | 广西蒙山县水电铁合金厂 | A kind of smelting process of the manganese-silicon of energy-saving high yield |
| CN106119640A (en) * | 2016-08-25 | 2016-11-16 | 广西蒙山县水电铁合金厂 | A kind of smelting process of energy-conservation manganese-silicon |
| CN106119641A (en) * | 2016-08-25 | 2016-11-16 | 广西蒙山县水电铁合金厂 | A kind of smelting process of the manganese-silicon reducing energy consumption |
| CN106191584A (en) * | 2016-08-25 | 2016-12-07 | 广西蒙山县水电铁合金厂 | A kind of smelting process of the manganese-silicon of energy-conservation high conversion |
| CN106222505A (en) * | 2016-08-25 | 2016-12-14 | 广西蒙山县水电铁合金厂 | A kind of smelting process improving manganese-silicon conversion ratio |
| CN106756350A (en) * | 2017-01-18 | 2017-05-31 | 中信锦州金属股份有限公司 | Half manganese carbonate ore smelts the production technology of medium-low carbon ferromanganese |
| CN106756350B (en) * | 2017-01-18 | 2018-11-02 | 中信锦州金属股份有限公司 | Half manganese carbonate ore smelts the production technology of medium-low carbon ferromanganese |
| CN113981210A (en) * | 2021-10-29 | 2022-01-28 | 吉铁铁合金有限责任公司 | Production process for producing manganese series ferroalloy by roasting manganese ore |
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