CN107083479A - The processing system and processing method of a kind of ferrous manganese ore - Google Patents
The processing system and processing method of a kind of ferrous manganese ore Download PDFInfo
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- CN107083479A CN107083479A CN201710380836.2A CN201710380836A CN107083479A CN 107083479 A CN107083479 A CN 107083479A CN 201710380836 A CN201710380836 A CN 201710380836A CN 107083479 A CN107083479 A CN 107083479A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/006—Starting from ores containing non ferrous metallic oxides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B47/00—Obtaining manganese
Abstract
The invention provides a kind of processing system of ferrous manganese ore and processing method.The system includes：Reduction apparatus, is exported provided with feed(raw material)inlet and metallized pellet；Screening device is ground, provided with metallized pellet entrance, metal iron powder outlet and the outlet of manganese slag, metallized pellet entrance is connected with the metallized pellet outlet of reduction apparatus；First mixing device, provided with the outlet of manganese slag entrance, reduction coal entrance, additive entrance and the first compound, manganese slag outlet of the manganese slag entrance with grinding screening device is connected；First shaped device, is exported provided with the first compound entrance and the first pelletizing, and the first compound entrance is connected with the first compound outlet of the first mixing arrangement；Molten separating device, is exported provided with the first pelletizing entrance and manganeisen, and the first pelletizing entrance is connected with the first pelletizing outlet of the first shaped device.The present invention can obtain metal iron powder and ferromanganese with the manganese in synthetical recovery Ferromanganese Ore and iron.
Description
Technical field
The invention belongs to the energy and field of metallurgy, in particular it relates to the processing system and processing method of a kind of ferrous manganese ore.
Background technology
Manganese product is widely used in the fields such as steel, electronics, light industry, chemical industry, agricultural.Except a small amount of rich manganese ore can be used directly
Outside in steel-making and as battery manganese powder, the overwhelming majority needs to apply after processing.Therefore, it is always the country that manganese ore, which carries manganese,
The emphasis of outer research.
The manganese ore of China is more based on lean ore, mainly exists with manganese carbonate and manganese oxide form, and the oxygen of manganese oxide mineral
Change manganese and iron oxide symbiosis, mainly for the production of Mn-rich slag and the pig iron.At present, the production of Mn series alloy mainly has three kinds of modes.
The first is blast furnace process steelmaking furnace ferromanganese, the technical maturity, and metal manganese content is more than 65% in the blast furnace ferromanganese of output, it is single will
Ask that the raw material manganese content into stove is higher, iron content is relatively low, therefore raising manganese content need to be sintered to manganese ore, therefore
Energy consumption is higher.Second is blast furnace+mineral hot furnace method Smelting Simn In A, that is, first passes through blast furnace process and obtain the pig iron and Mn-rich slag,
Then silicomangan is produced by Mn-rich slag with mineral hot furnace, this process resource strong adaptability, but long flow path.The third is intermediate frequency sense
Stove ferromanganese smelting alloy is answered, the technique produces different grades of manganeisen by the way of manganese metal is with addition of steel scrap, it is produced
Mode is simple, ripe, but the manganese metal manufacturing process in raw material is complicated, cost is high, environmental pollution is serious.Therefore, it is badly in need of exploitation
Middle-low grade manganese ore is that raw material directly produces the low energy consumption of high-grade manganeisen, pollution-free, inexpensive technique.
The content of the invention
In view of the shortcomings of the prior art, the invention provides a kind of processing system of ferrous manganese ore, it includes：
Reduction apparatus, is exported provided with feed(raw material)inlet and metallized pellet；
Screening device is ground, provided with metallized pellet entrance, metal iron powder outlet and the outlet of manganese slag, the metallized pellet entrance
It is connected with the metallized pellet outlet of the reduction apparatus；
First mixing device, it is described provided with the outlet of manganese slag entrance, reduction coal entrance, additive entrance and the first compound
Manganese slag entrance is connected with the manganese slag outlet of the mill screening device；
First shaped device, is exported, the first compound entrance and institute provided with the first compound entrance and the first pelletizing
The the first compound outlet for stating the first mixing arrangement is connected；
Molten separating device, is exported provided with the first pelletizing entrance and manganeisen, the first pelletizing entrance with it is described the first one-tenth
The first pelletizing outlet of type device is connected.
In some embodiments of the invention, above-mentioned processing system also includes：
Second mixing device, provided with the outlet of ferrous manganese ore entrance, reducing agent entrance and the second compound；
Second shaped device, is exported, the second compound entrance and institute provided with the second compound entrance and carbonaceous pelletizing
The the second compound outlet for stating the second mixing arrangement is connected, the carbonaceous pelletizing outlet and the feed(raw material)inlet phase of the reduction apparatus
Even.
In some embodiments of the invention, above-mentioned processing system also includes：
Drying unit, provided with wet bulb group's entrance and dry pelletizing outlet, wet bulb group's entrance and the described first shaping dress
The the first pelletizing outlet put is connected, and the dry pelletizing outlet is connected with the first pelletizing entrance of the molten separating device.
Present invention also offers a kind of method that utilization said system handles ferrous manganese ore, comprise the following steps：
Ferrous manganese ore and reducing agent are sent into the reduction apparatus and carry out reduction roasting, metallized pellet is obtained；
The metallized pellet feeding mill screening device is subjected to mill ore magnetic selection, metal iron powder and manganese slag is obtained；
The manganese slag and reduction coal, additive are sent into first mixing device, obtaining first after being well mixed mixes
Material；
First compound is sent into first shaped device to be molded, the first pelletizing is obtained；
The first pelletizing feeding molten separating device is subjected to molten office reason, manganeisen is obtained.
In some embodiments of the invention, the reducing agent is carbonaceous reducing agent, gaseous reducing agent H2, gaseous reducing agent
One or more in CO；Weight/mass percentage composition≤10% of the empty dry basis ash content of the carbonaceous reducing agent.
In some embodiments of the invention, carried out into after the ferrous manganese ore and the carbonaceous reducing agent being well mixed
Type, obtains carbonaceous pelletizing；
The carbonaceous pelletizing is sent into the reduction apparatus and carries out reduction roasting.
In some embodiments of the invention, the additive is one in calcium oxide, calcium carbonate, magnesia, magnesium carbonate
Plant or several.
In some embodiments of the invention, the temperature of the reduction roasting is 800 DEG C~1250 DEG C, preferably 900 DEG C
~1200 DEG C, be further preferably 900 DEG C~1100 DEG C；Time is 20min~90min, preferably 20min~60min.
In some embodiments of the invention, the temperature of the molten office reason for 1420 DEG C~1600 DEG C, preferably 1450
DEG C~1550 DEG C；Time is 30min~120min, preferably 40min~90min.
In some embodiments of the invention, the manganese slag, the reduction coal, the mass ratio of the additive are 100：
(10~25)：(1~10).
The present invention can be with the manganese in synthetical recovery Ferromanganese Ore and iron, and obtained final products are metal iron powder and ferromanganese.
Present invention process is short, and cost is low, and manganese content is high in obtained manganeisen, and the rate of recovery of manganese is high.
Brief description of the drawings
Fig. 1 be the embodiment of the present invention in a kind of ferrous manganese ore processing system structural representation.
Fig. 2 be the embodiment of the present invention in a kind of processing ferrous manganese ore process chart.
Fig. 3 be the embodiment of the present invention in another processing ferrous manganese ore process chart.
Embodiment
Below in conjunction with drawings and examples, the embodiment to the present invention is described in more details, so as to energy
Enough more fully understand the solution of the present invention and the advantage of its various aspects.However, specific embodiments described below and reality
Apply the purpose that example is only explanation, rather than limitation of the present invention.
In Ferromanganese Ore based on iron, because iron content is higher, manganese content is not high when preparing ferromanganese, the present invention first preliminary reduction
A part of iron is reclaimed, then Mn-rich slag is carried out molten point, the manganeisen of high Mn content is obtained.
As shown in figure 1, the processing system for the ferrous manganese ore that the present invention is provided includes：Second mixing device 1, the second shaped device
2nd, reduction apparatus 3, mill screening device 4, the first mixing device 5, the first shaped device 6, drying unit 7 and molten separating device 8.
Second mixing device 1 is used to mix ferrous manganese ore and reducing agent, mixed provided with ferrous manganese ore entrance, reducing agent entrance and second
Close material outlet.
Second shaped device 2 is used to the second compound being molded, and is exported provided with the second compound entrance and carbonaceous pelletizing, the
Two compound entrances are connected with the second compound outlet of the second mixing arrangement 1.
Second mixing device 1 and the second shaped device 2 are not the necessary device of the present invention, the reducing agent used in the present invention
Can be that solid reductant can also be gaseous reducing agent, when using solid reductant, the system can add the second batch mixing
Ferrous manganese ore and solid reductant, i.e., be first well mixed and be prepared into pelletizing, then reduced by the shaped device 2 of device 1 and second.
Reduction apparatus 3 is used to reduce ferrous manganese ore, is exported provided with feed(raw material)inlet and metallized pellet, feed(raw material)inlet with the second one-tenth
The carbonaceous pelletizing outlet of type device 2 is connected.
Grinding screening device 4 is used for mill ore magnetic selection, provided with metallized pellet entrance, metal iron powder outlet and the outlet of manganese slag, metal
Pellet entrance is connected with the metallized pellet outlet of reduction apparatus 3.
First mixing device 5 is used to mix manganese slag, reduction coal and additive, provided with manganese slag entrance, reduction coal entrance, addition
Agent entrance and the outlet of the first compound, manganese slag outlet of the manganese slag entrance with grinding screening device 4 are connected.
First shaped device 6 is used to the first compound being molded, and is exported provided with the first compound entrance and the first pelletizing, the
One compound entrance is connected with the first compound outlet of the first mixing arrangement 5.
Drying unit 7 is used to dry the first pelletizing, provided with wet bulb group's entrance and dries pelletizing outlet, wet bulb group's entrance and the
The first pelletizing outlet of one shaped device 6 is connected.
Drying unit 7 nor the indispensable device of the system, if the water content influence of the first pelletizing subsequently molten office reason,
First pelletizing needs just be admitted to the molten office reason of the molten progress of separating device 8 after drying unit 7 is dried.
Molten separating device 8 is used to carry out molten office reason to drying pelletizing, is exported provided with the first pelletizing entrance and manganeisen, institute
The first pelletizing entrance is stated with the drying pelletizing outlet of the drying unit 7 to be connected.
As shown in Fig. 2 a kind of method for processing ferrous manganese ore that the present invention is provided comprises the following steps：
Ferrous manganese ore and reducing agent feeding reduction apparatus 3 are subjected to reduction roasting, metallized pellet is obtained；
Metallized pellet feeding mill screening device 4 is subjected to mill ore magnetic selection, metal iron powder and manganese slag is obtained；
Manganese slag and reduction coal, additive are sent into the first mixing device 5, the first compound is obtained after being well mixed；
First compound is sent into the first shaped device 6 to be molded, the first pelletizing is obtained；
The molten separating device 8 of first pelletizing feeding is subjected to molten office reason, manganeisen is obtained.
The present invention is first reduced the iron in Ferromanganese Ore, and manganese is reduced into manganous oxide, passes through mill ore magnetic selection recovery section
Iron obtains Iron concentrate, then selects tailings to carry out molten point with addition of carbonaceous reducing agent on mill, obtains the ferromanganese that manganese content is 65%~85%
Alloy.
It is the same as those described above, the present invention can also use solid reductant using gaseous reducing agent.Currently preferred
In embodiment, reducing agent is carbonaceous reducing agent, gaseous reducing agent H2, one or more in gaseous reducing agent CO；Wherein, carbonaceous
Weight/mass percentage composition≤10% of the empty dry basis ash content of reducing agent.
When using solid reductant, ferrous manganese ore and carbonaceous reducing agent can be sent into the second compound 1 and are well mixed, obtained
Second compound；The second compound is sent into the second shaped device 2 again to be molded, carbonaceous pelletizing is obtained；Again by carbonaceous pelletizing
Send into reduction apparatus 3 and carry out reduction roasting, as shown in Figure 3.
Be the same as those described above, when the moisture influence subsequently molten office reason of the first pelletizing, it is necessary to first pass through dry after melted again
Office is managed, as shown in Figure 3.
The temperature of reduction roasting directly affects the degree of metalization of metallized pellet, in the preferred embodiment of the invention, also
The temperature of original roasting is 800 DEG C~1250 DEG C, is further preferably 900 DEG C~1200 DEG C, more preferably 900 DEG C~1100 DEG C.It is preferred that
Roasting time be 20min~90min, more preferably 20min~60min.
Additive used in the present invention is the compound of calcium or magnesium, and the compound of calcic is mainly used in replacing silicon, containing magnesium
Compound is mainly used in increasing the mobility of slag.In the preferred embodiment of the invention, additive is calcium oxide, calcium carbonate, oxidation
One or more in magnesium, magnesium carbonate.
Very little, the manganese in manganese slag can not be effectively reduced for reduction coal, additive, influence the rate of recovery and grade of manganese；Too much,
It can cause to waste.In the preferred embodiment of the invention, manganese slag, reduction coal, the mass ratio of additive are 100：(10~25)：(1
~10).
The temperature of molten office reason is too low, and manganese cannot be reduced effectively, it is difficult to obtain manganeisen；Temperature is too high, can increase
The volatility of manganese addition, influences the rate of recovery of manganese, while also wasting the energy.In the preferred embodiment of the invention, office reason is melted
Temperature is 1420 DEG C~1600 DEG C, more preferably 1450 DEG C~1550 DEG C.Processing time is preferably 30min~120min, more excellent
Elect 40min~90min as.
Below with reference to specific embodiment, the present invention will be described.Institute's taking technique condition value is in following embodiments
Exemplary, its desirable number range is as shown in foregoing summary.Detection method used in following embodiments is one's own profession
The conventional detection method of industry.
Embodiment 1
Ferromanganese Ore used in the present embodiment, its composition is：TFe25.28%, TMn14.35%；Reducing agent used is coal
Powder, the weight/mass percentage composition of its fixed carbon is 82.63%, and the weight/mass percentage composition of empty dry basis ash content is 8.17%；Used goes back
Raw coal is also the coal dust；Additive therefor is calcium oxide.
The present embodiment is specific as follows using the system shown in Fig. 1 and the processing ferrous manganese ore of the technological process shown in Fig. 3：
By ferrous manganese ore and coal dust according to mass ratio 100：20 the second compounds 1 of feeding are well mixed, and obtain the second compound.
Second compound is sent into the second shaped device 2 to be molded, carbonaceous pelletizing is obtained.
Carbonaceous pelletizing feeding reduction apparatus 3 is subjected to reduction roasting, the reductase 12 0min at 1100 DEG C obtains metallization ball
Group.
Metallized pellet feeding mill screening device 4 is subjected to mill ore magnetic selection, obtain TFe90.01% metal iron powder and
TFe8.79%, TMn32.39% manganese slag.
By manganese slag, coal dust, calcium oxide according to mass ratio be 100:10:5 the first mixing devices 5 of feeding, are obtained after being well mixed
Obtain the first compound.
First compound is sent into the first shaped device 6 to be molded, the first pelletizing is obtained.
The molten separating device 8 of first pelletizing feeding is subjected to molten office reason, a point 40min is melted at 1550 DEG C, manganeisen is obtained.
After testing, the mass content that Fe mass content is 19.90%, Mn in the manganeisen is 77.42%.
Embodiment 2
Ferromanganese Ore used in the present embodiment, its composition is：TFe25.28%, TMn14.35%；Reducing agent used is H2
With CO mixed gas, wherein (H in mixed gas2+ CO) volume fraction >=70%, the matter of fixed carbon in reduction coal used
It is 76% to measure percentage composition；Additive therefor is magnesia.
The present embodiment is specific as follows using the system shown in Fig. 1 and the processing ferrous manganese ore of the technological process shown in Fig. 2：
Ferrous manganese ore is sent into reduction apparatus 3, and toward above-mentioned mixed gas is passed through in reduction apparatus 3, ferrous manganese ore gone back
Original roasting, reduces 90min at 800 DEG C, obtains metallized pellet.
Metallized pellet feeding mill screening device 4 is subjected to mill ore magnetic selection, obtain TFe91.18% metal iron powder and
TFe9.06%, TMn32.71% manganese slag.
By manganese slag, reduction coal, magnesia according to mass ratio be 100:15:1 the first mixing device 5 of feeding, after being well mixed
Obtain the first compound.
First compound is sent into the first shaped device 6 to be molded, the first pelletizing is obtained.
The molten separating device 8 of first pelletizing feeding is subjected to molten office reason, a point 120min is melted at 1420 DEG C, ferromanganese is obtained and closes
Gold.After testing, the mass content that Fe mass content is 19.86%, Mn in the manganeisen is 77.01%.
Embodiment 3
Ferromanganese Ore used in the present embodiment, its composition is：TFe18.15%, TMn17.97%；Reducing agent used is coal
Powder, the weight/mass percentage composition of its fixed carbon is 79.50%, and the weight/mass percentage composition of empty dry basis ash content is 9.78%；Used goes back
Raw coal is also the coal dust；Additive therefor is the mixture of calcium carbonate and magnesium carbonate.
The present embodiment is specific as follows using the system shown in Fig. 1 and the processing ferrous manganese ore of the technological process shown in Fig. 3：
By ferrous manganese ore and coal dust according to mass ratio 100:19.6 the second compounds 1 of feeding are well mixed, and are obtained second and are mixed
Material.
Second compound is sent into the second shaped device 2 to be molded, carbonaceous pelletizing is obtained.
Carbonaceous pelletizing feeding reduction apparatus 3 is subjected to reduction roasting, 60min is reduced at 900 DEG C, metallization ball is obtained
Group.
Metallized pellet feeding mill screening device 4 is subjected to mill ore magnetic selection, obtain TFe88.64% metal iron powder and
TFe4.62%, TMn36.39% manganese slag.
By manganese slag, coal dust, calcium carbonate, magnesium carbonate according to mass ratio be 100:11.08:5:2 the first mixing devices 5 of feeding,
The first compound is obtained after well mixed.
First compound is sent into the first shaped device 6 to be molded, the first pelletizing is obtained.
The molten separating device 8 of first pelletizing feeding is subjected to molten office reason, a point 90min is melted at 1450 DEG C, manganeisen is obtained.
After testing, the mass content that Fe mass content is 11.55%, Mn in the manganeisen is 84.76%.
Embodiment 4
Ferromanganese Ore used in the present embodiment, its composition is：TFe21.18%, TMn18.35%；Reducing agent used is CO
Mixed gas, wherein CO volumn concentration be 90%；The weight/mass percentage composition of fixed carbon is in reduction coal used
75%；Additive therefor is calcium carbonate.
The present embodiment is specific as follows using the system shown in Fig. 1 and the processing ferrous manganese ore of the technological process shown in Fig. 2：
Ferrous manganese ore is sent into reduction apparatus 3, and toward above-mentioned mixed gas is passed through in reduction apparatus 3, ferrous manganese ore gone back
Original roasting, reduces 35min at 1250 DEG C, obtains metallized pellet.
Metallized pellet feeding mill screening device 4 is subjected to mill ore magnetic selection, obtain TFe89.28% metal iron powder and
TFe7.18%, TMn33.69% manganese slag.
By manganese slag, reduction coal, magnesia according to mass ratio be 100:25:10 the first mixing devices 5 of feeding, after being well mixed
Obtain the first compound.
First compound is sent into the first shaped device 6 to be molded, the first pelletizing is obtained.
The molten separating device 8 of first pelletizing feeding is subjected to molten office reason, a point 30min is melted at 1600 DEG C, manganeisen is obtained.
After testing, the mass content that Fe mass content is 18.87%, Mn in the manganeisen is 79.93%.
It was found from above-described embodiment, manganese content is high in manganeisen produced by the present invention.
To sum up, the present invention can obtain metal iron powder and ferromanganese with the manganese in synthetical recovery Ferromanganese Ore and iron.
Present invention process is short, and cost is low, and manganese content is high in obtained manganeisen.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and not to embodiment
Limit.For those of ordinary skill in the field, other multi-forms can also be made on the basis of the above description
Change or variation.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out it is apparent
Change or change still in protection scope of the present invention among.
Claims (10)
1. a kind of processing system of ferrous manganese ore, it is characterised in that including：
Reduction apparatus, is exported provided with feed(raw material)inlet and metallized pellet；
Screening device is ground, provided with metallized pellet entrance, metal iron powder outlet and the outlet of manganese slag, the metallized pellet entrance and institute
The metallized pellet outlet for stating reduction apparatus is connected；
First mixing device, provided with the outlet of manganese slag entrance, reduction coal entrance, additive entrance and the first compound, the manganese slag
Entrance is connected with the manganese slag outlet of the mill screening device；
First shaped device, is exported provided with the first compound entrance and the first pelletizing, the first compound entrance and described the
The first compound outlet of one mixing arrangement is connected；
Molten separating device, is exported provided with the first pelletizing entrance and manganeisen, and the first pelletizing entrance is filled with the described first shaping
The the first pelletizing outlet put is connected.
2. processing system according to claim 1, it is characterised in that also include：
Second mixing device, provided with the outlet of ferrous manganese ore entrance, reducing agent entrance and the second compound；
Second shaped device, is exported provided with the second compound entrance and carbonaceous pelletizing, the second compound entrance and described the
The second compound outlet of two mixing arrangements is connected, and the carbonaceous pelletizing outlet is connected with the feed(raw material)inlet of the reduction apparatus.
3. processing system according to claim 1, it is characterised in that also include：
Drying unit, provided with wet bulb group's entrance and dry pelletizing outlet, wet bulb group's entrance and first shaped device
The outlet of first pelletizing is connected, and the dry pelletizing outlet is connected with the first pelletizing entrance of the molten separating device.
4. a kind of method that any described system handles ferrous manganese ore in utilization claim 1-3, it is characterised in that including as follows
Step：
Ferrous manganese ore and reducing agent are sent into the reduction apparatus and carry out reduction roasting, metallized pellet is obtained；
The metallized pellet feeding mill screening device is subjected to mill ore magnetic selection, metal iron powder and manganese slag is obtained；
The manganese slag and reduction coal, additive are sent into first mixing device, the first compound is obtained after being well mixed；
First compound is sent into first shaped device to be molded, the first pelletizing is obtained；
The first pelletizing feeding molten separating device is subjected to molten office reason, manganeisen is obtained.
5. method according to claim 4, it is characterised in that the reducing agent is carbonaceous reducing agent, gaseous reducing agent H2、
One or more in gaseous reducing agent CO；Weight/mass percentage composition≤10% of the empty dry basis ash content of the carbonaceous reducing agent.
6. method according to claim 5, it is characterised in that
It is molded after the ferrous manganese ore and the carbonaceous reducing agent are well mixed, obtains carbonaceous pelletizing；
The carbonaceous pelletizing is sent into the reduction apparatus and carries out reduction roasting.
7. method according to claim 4, it is characterised in that the additive is calcium oxide, calcium carbonate, magnesia, carbon
One or more in sour magnesium.
8. method according to claim 4, it is characterised in that the temperature of the reduction roasting is 800 DEG C~1250 DEG C；When
Between be 20min~90min.
9. method according to claim 4, it is characterised in that the temperature of the molten office reason is 1420 DEG C~1600 DEG C；
Time is 30min~120min.
10. method according to claim 4, it is characterised in that the manganese slag, the reduction coal, the matter of the additive
Amount is than being 100：(10~25)：(1~10).
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Cited By (4)
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| CN107828930A (en) * | 2017-11-10 | 2018-03-23 | 唐竹胜 | A kind of high phosphorus high ferro difficulty selects the method that the deferrization of manganese ore dephosphorization produces ultrapure Mn-rich slag |
| CN108676951A (en) * | 2018-06-15 | 2018-10-19 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of hydrocarbon joint direct-reduction technique of iron ore concentrate |
| CN111100982A (en) * | 2019-12-27 | 2020-05-05 | 宁夏晟晏实业集团能源循环经济有限公司 | Process for smelting manganese-rich slag from high-aluminum lean-manganese iron ore and high-sulfur coke |
| CN114086004A (en) * | 2021-11-24 | 2022-02-25 | 安徽工业大学科技园有限公司 | Method for selectively and efficiently extracting manganese from manganese-rich slag |
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