CN107723403B - A kind of method that manganese oxide ore prepares high carbon ferromanganese - Google Patents
A kind of method that manganese oxide ore prepares high carbon ferromanganese Download PDFInfo
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- CN107723403B CN107723403B CN201710783987.2A CN201710783987A CN107723403B CN 107723403 B CN107723403 B CN 107723403B CN 201710783987 A CN201710783987 A CN 201710783987A CN 107723403 B CN107723403 B CN 107723403B
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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
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
- C21B13/146—Multi-step reduction without melting
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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
Abstract
A kind of method that manganese oxide ore prepares high carbon ferromanganese, it is the manganese ore and reducing agent for being 18-50% by manganese content, additive, activator, catalyst is uniformly mixed and is placed in reactor, use resistance furnace or micro-wave oven that reaction mass is heated to 1050 ± 50 DEG C with the heating rate of 10-50 DEG C/min, constant temperature 5-60min, then 1250 ± 50 DEG C are heated to the heating rate of 10-60 DEG C/min, constant temperature 12-60min is to fully reacting, guarantee that furnace atmosphere is neutral or weak reducing atmosphere in heating and thermostatic process, reaction product takes out reaction product when cooling to 600 ± 50 DEG C with the furnace, and to be greater than 360 DEG C/min under controlled atmosphere cooling condition, it is quickly cooled to 25-50 DEG C, reaction product is by natural crushing, screened or magnetic Choosing, can be obtained high carbon ferromanganese.Manganese content 60%-80%, iron content 10%-35%, carbon content 4.0%-7.5%, phosphorus content are less than 0.10%, sulfur content less than 0.10% in high carbon ferromanganese.The present invention has the characteristics that simple process, easy to operate, at low cost, manganese high conversion rate, has broad application prospects.
Description
Technical field
The invention belongs to field of metallurgy, are related to a kind of preparation method of high carbon ferromanganese.
Background technique
The 90% of world's manganese total output is consumed in steel and iron industry.Manganese is to intensity, toughness, hardness and the quenching property for improving steel
It plays an important role.Manganese is as alloying element generally with shapes such as manganese metal, manganese iron or manganese-silicons in steel manufacture process
Formula is added in molten steel.Manganese metal generally uses electrolysis method to produce, and manganese iron or silicomangan mainly use blast furnace or mineral hot furnace
Production.High carbon ferromanganese uses electric furnace or blast fumance, and corresponding product is electric furnace manganese iron and blast furnace ferromanganese.Existing high carbon ferromanganese is raw
It is liquid-solid under state and semi-molten state that production. art and related patents have a characteristic that the production process of high carbon ferromanganese is usually melted
Reaction and solid-solid reaction and gas-solid reaction, due to MnO and SiO in reduction course2Silicate is formed, causes MnO in slag living
Spend lower, reduction reaction is obstructed.In addition, not yet being promoted using activator or additive in existing manganeisen production technology
The quick reduction of Mn oxide；Further more, prior art does not consider according to Mn oxide in different reducing agents and different temperatures area
Between restore thermodynamics and kinetics condition variation, treat and design different temperature schedules with a certain discrimination, select different reducing agents
And reaction atmosphere, cause reaction temperature high, energy consumption is high, and product process is long, and pollutant discharge amount is big to wait adverse effect.Relevant manganese
It is as follows that ferroalloy produces Patent:
The Chinese patent literature of 102251115 A of Publication No. CN discloses a kind of high alkalinity manganese ore production high-carbon manganese
The method of ferroalloy, according to weight percent: reducing agent be 10~20% manganese ores be 70~80%, iron ore is 1~10%, fill
Melting is carried out in mineral hot furnace after dividing mixing, for the melt obtained after melting after cooling up to high carbon ferromanganese alloy, alloy is siliceous
Lower than 1.5%, basicity of slag is controlled in 1.6-2.0,82% or more product recovery rate；The technique is high-alkali for Honghe, Yunnan high phosphorus
It spends the processing of manganese ore and develops, there are stronger specific aim, but the technique existing defects, utilize the mine heat furnace smelting manganese of high energy consumption
Iron, meanwhile, the smelting temperature in mineral hot furnace is higher, is unfavorable for the removing of phosphorus in high-phosphorus manganese.
The Chinese patent literature of 102382977 A of Publication No. CN discloses a kind of preparing manganeisen from low grade manganese mine
Production technology, by metal manganese content be 15-30% low-grade manganese dry, with addition of reducing agent, activator, solvent and bonding
Agent mixes, and is made in compound material merging rotary kiln or tunnel oven, using coal gas or natural gas as the energy, coefficient of excess air
Control keeps weakly reducing atmosphere in furnace in 0.9-1.0, with 1-4 DEG C/min of heating rate that low-grade manganese is compound at normal temperature
Raw material is heated to 400 ± 80 DEG C, and keeps the temperature 0.5-5 hours, is then heated to 750 ± 80 DEG C with 2-5 DEG C/min of heating rate,
Heat preservation 0.5-5 hours finally would be heated to 1100 ± 150 DEG C with 1-4 DEG C/min of heating rate, keeps the temperature 0.5-6 hours, is rising
It is 0.12-0.15MPa that furnace inner air pressure is kept in mild insulating process, and reacting rear material obtains manganeisen through cooling, magnetic separation
And tailings.Metal Fe is 15-20% in alloy, and metal Mn is 65-75%, and carbon content is between 1.0-6.5%.The technique is one
The new process of kind processing low-grade manganese resource, but the technique is the gas base solid-phase reduction technique equipped using rotary kiln, is existed
The problem of be reaction mechanism mechanism of reaction complexity, so as to cause in same reactor Discrete control reaction atmosphere have certain operation difficult
Degree；In addition rotary kiln production process is easy ring formation, causes production process not steady.
The Chinese patent literature of 102373333 A of Publication No. CN discloses a kind of method for preparing high carbon ferromanganese, will mix
Close mine be added electric furnace in, then coke is added in the electric furnace, and under 1400~1600 degrees Celsius by the composite ore into
Row is smelted, to obtain the molten slurry containing high carbon ferromanganese, after the separation of slag gold high carbon ferromanganese containing 75.5% manganese, 14.71% iron,
2% silicon, 0.25% phosphorus, 7% carbon and 0.03% sulphur, while producing a large amount of clinker.The various differences of the process synthesis
The manganese ore of type optimizes its proportion, makes it have preferable smelting performance；But the technique is easily sprayed in smelting process
Phenomenon is splashed, causes the working of a furnace unstable；The use of raw material is mainly high-grade manganese ore, while smelting temperature is high, cause production cost compared with
Height, equipment investment are big.
The Chinese patent literature of 102367516 A of Publication No. CN discloses a kind of method for preparing high carbon ferromanganese, by
One composite ore is added in electric furnace, the second composite ore is added in the electric furnace by the center expects pipe of the electric stove tops, then
Coke is added in electric furnace, and is smelted first, second composite ore simultaneously under 1400~1600 degrees Celsius, to be contained
There is the molten slurry of high carbon ferromanganese, separates the high carbon ferromanganese.Wherein, in the first composite ore, manganese iron weight ratio is 6.55: 1；Second is mixed
It closes in mine, manganese iron weight ratio is 10.83: 1；By weight percentage, the high carbon ferromanganese include 75.5% manganese, 14.71%
Iron, 2% silicon, 0.25% phosphorus, 7% carbon and 0.03% sulphur.The technique can quickly adjust the content of manganese, but the technique
The duration of heat it is longer, cause mineral hot furnace power consumption higher.
To sum up, a series of problems, such as production process of high carbon ferromanganese alloy is weighed there are energy consumption height, long flow path, pollution, therefore,
Novel low-consumption, low pollution or free of contamination manganese oxide ore prepare high carbon ferromanganese new process and have become the efficiently comprehensive benefit of Current resource
Major fields.
Summary of the invention
It is an object of the present invention to provide one kind can low pollution, low cost inexpensively using low-grade manganese produce high-grade
The manganeisen technique of high quality, instead of the method for traditional manganeisen production technology；Reach and shortens manganese process for making iron stream
The purpose of journey reduces environmental pollution, and reduces production cost and improves product quality.
A kind of method that manganese oxide ore prepares high carbon ferromanganese, by manganese oxide ore, reducing agent, additive, activator, catalyst
It is mixed to get mixture, mixture is heated up, and carries out solid state reduction, it is then that reduzate is cooling, separate to obtain high carbon ferromanganese；
The reducing agent is at least one of coke, silicon carbide, calcium carbide, aluminium powder；
The additive is at least one of silica flour, Fluorspar Powder, quick lime；
The activator is at least one of sodium carbonate, potassium nitrate, borax；
The catalyst is at least one of manganese oxide, manganese powder, metal iron powder, vanadic anhydride.
The present inventor by numerous studies find, use manganese oxide ore for raw material, by the reducing agent, additive,
Activator, catalyst quaternary additive coordinated, can help to reduce manganese oxide ore solid state reduction temperature, hence it is evident that reduce
Energy consumption；High quality high carbon ferromanganese and extremely tractable solid-state can be obtained through magnetic separation screening in solid state reduction product chilling at high temperature
Gangue slag.
In the present invention, by manganese oxide ore and substance, the energy that can will be reduced into simple substance manganese or intermetallic manganese in manganese oxide
It reduces the substance of the activity of gangue in manganese ore, the activity of manganese oxide can be improved and the manganese that promotion restores and the object that iron crystal grain is grown up
Matter can reduce manganese oxide activation energy power or the substance for promoting manganese oxide to restore in manganese ore, carry out solid state reduction, pass through
High carbon ferromanganese is made in coordinated between component.
A kind of method that manganese oxide ore prepares high carbon ferromanganese of the present invention, uses manganese oxide ore to prepare high carbon ferromanganese for raw material,
Manganese oxide ore is manganese oxide ore beneficiation concentrate or is the fine ore that manganese oxide ore is finely ground to -200 mesh (- 0.074mm) of 40 mesh.
The method of the present invention can be used for manganese oxide ore of the manganese metal weight percentage 18~50%.
The method of the present invention samples 20~30% especially suitable for manganese, samples lower manganese oxide ore.
The reducing agent includes at least one of coke, silicon carbide, calcium carbide, aluminium powder.
Preferably, in reducing agent, including coke, also selectivity include at least one in silicon carbide, calcium carbide, aluminium powder
Kind.
Preferably, in reducing agent, the weight percent of coke is 80-90 part, the weight percent of silicon carbide for less than
Or it is equal to 10 parts, the weight percent of calcium carbide is less than or equal to 10 parts, and the weight percent of aluminium powder is less than or equal to 4
Part.
Further preferably, in reducing agent, the parts by weight including coke are 80~90 parts；The parts by weight of silicon carbide are 3~10
Part；The parts by weight of calcium carbide are 3.5~7 parts；Parts by weight in aluminium powder are 1~4 part.
Still more preferably, in reducing agent, the parts by weight including coke are 85~90 parts；The parts by weight of silicon carbide are 4.5
~10 parts；The parts by weight of calcium carbide are 2~10 parts；Parts by weight in aluminium powder are 1~4 part.
The additive includes one or more of silica flour, Fluorspar Powder, quick lime.
Preferably, additive includes Fluorspar Powder and quick lime, also selectivity includes quartz.
Further preferably, in additive, quartzy weight percent is less than or equal to 15 parts, and the weight percent of fluorite is 8-
20 parts, 68-85 parts of the weight percent of quick lime.
Preferably, the parts by weight of Fluorspar Powder are 8~20 parts in additive；The parts by weight of quick lime are 68~85 parts；Stone
2~15 parts of the parts by weight of English powder.
Further preferably, in additive, the parts by weight of Fluorspar Powder are 10~15 parts；The parts by weight of quick lime are 75~82
Part；The parts by weight of silica flour are 6~10 parts.
The partial size of preferred additive is 40~200 mesh.
The activator includes one or more of sodium carbonate, potassium nitrate, borax.
Preferably, the activator, includes sodium carbonate, also selectivity includes potassium nitrate and/or borax.
It further preferably, include sodium carbonate and borax, also selectivity includes potassium nitrate in the activator.
It still more preferably, include sodium carbonate, borax and potassium nitrate in the activator.
Preferably, the parts by weight of sodium carbonate are 25~60 parts in the activator；The parts by weight of potassium nitrate be less than or
Equal to 50 parts；The parts by weight of borax are less than or equal to 40 parts.
Preferably, in activator, the weight percent of sodium carbonate is 25-60 parts, and the weight percent of potassium nitrate is 20-50
Part, the weight percent of borax is 2-40 parts.
Further preferably, in the activator, the parts by weight of sodium carbonate are 33~50 parts；The parts by weight 30 of potassium nitrate~
50 parts；2~30 parts of the parts by weight of borax.
Most preferably, in the activator, the parts by weight of sodium carbonate are 40~50 parts；The parts by weight 30~35 of potassium nitrate
Part；2~30 parts of the parts by weight of borax.
The catalyst is one or more of manganese oxide, manganese powder, metal iron powder, vanadic anhydride.
The catalyst is the mixture of manganese oxide, manganese powder, metal iron powder and vanadic anhydride.
Preferably, in catalyst, the weight percent of manganese oxide is 15-50 parts, the weight percent of manganese powder is 19-
50 parts, the weight percent of metal iron powder is 15-45 parts, and the weight percent of vanadic anhydride is 5-15 parts.
Preferably, in the catalyst, 25~40 parts of the parts by weight of manganese oxide；The parts by weight 20~40 of manganese powder
Part；30~35 parts of the parts by weight of metal iron powder；5-15 parts of the parts by weight of vanadic anhydride manganese oxide.
Preferably, in mixture manganese ore, reducing agent, additive, activator, catalyst mass ratio are as follows: (75-85)
∶(8-20)∶(1-4)∶(1-4)∶(1-4)。
Further preferably, in mixture manganese ore, reducing agent, additive, activator, catalyst mass ratio are as follows: (75-
80)∶(8-16)∶(3-4)∶(2-4)∶(2-3)。
A kind of method that manganese oxide ore prepares high carbon ferromanganese of the present invention, heating furnace be one of resistance furnace, micro-wave oven or
It is several.
In the present invention, in smelting process, first the mixture is warming up at 1050 ± 50 DEG C and carries out one section of solid-state also
Original is then warming up to two sections of solid state reductions of progress at 1250 ± 50 DEG C again.
In the present invention, under the collaboration of the adding ingredient, under two sections of solid state reduction mechanism, can efficiently it make
Obtain the high carbon ferromanganese of good quality.
Preferably, mixture is warming up to one section of solid state reduction temperature with the heating rate of 10-50 DEG C/min, and in institute
Constant temperature 5-60min at a temperature of stating；After one section of solid state reduction, then two sections of solid-states are heated to the heating rate of 10-60 DEG C/min
Reduction temperature, and constant temperature 12-60min is to fully reacting；Smelting process carries out under for neutral or weak reducing atmosphere.
Preferably, smelting after the reaction was completed, smelts reaction product and cool to 600 ± 50 DEG C with the furnace；It is protected again in indifferent gas
Under shield, to be greater than the cooling rate of 360 DEG C/min, reaction product is quickly cooled to 25-50 DEG C, reaction product crushes naturally,
Screened or magnetic separation, can be obtained high carbon ferromanganese.
A kind of method that manganese oxide ore prepares high carbon ferromanganese of the present invention, the separation of reaction product is using in reaction mass
The natural separation that volume change of multi-element compounds when object mutually changes in rapid cooling is formed.
A kind of method that manganese oxide ore prepares high carbon ferromanganese of the present invention, includes the following steps:
Step 1: manganese content is mixed for the manganese oxide ore and reducing agent of 18-50%, additive, activator, catalyst
It is even, mixture is obtained, mixture is fitted into reactor；
Step 2: being put into the reactor for filling mixture in temperature automatically controlled heating furnace, to reaction mixture into
Reaction mass is heated to 1050 ± 50 DEG C, and constant temperature 5-60min with the heating rate of 10-50 DEG C/min, so by row heat temperature raising
1250 ± 50 DEG C are heated to the heating rate of 10-60 DEG C/min afterwards, and constant temperature 12-60min is to fully reacting, in heating and permanent
Guarantee that furnace atmosphere is neutral or weak reducing atmosphere during temperature；
Step 3: reaction product takes out reaction product when cooling to 600 ± 50 DEG C with the furnace, and in the cooling item of controlled atmosphere
To be greater than 360 DEG C/min under part, it is quickly cooled to 25-50 DEG C, screening is carried out to cooled product or magnetic separation obtains high carbon ferromanganese.
A kind of method that manganese oxide ore prepares high carbon ferromanganese of the present invention, manganese content 60%-80%, iron content in high carbon ferromanganese
10%-35%, carbon content 4.0%-7.5%, phosphorus content are less than 0.10%, sulfur content less than 0.10%.
Innovation point and technical principle of the invention is summarized as follows:
Innovation point and technical principle of the invention are as follows: according to manganese oxide ore in different reducing agents and different temperatures stage
Reduction characteristic, the generation of chemical reaction is effectively facilitated using additive, activator, catalyst, especially carbon restore MnO
Stage promotes the quick reduction and the raising of reduction conversion ratio of reaction.The separation of reaction product is more according to being formed in reaction
First compound has different phase compositions in different temperatures section, generates volume using its phase transformation under condition of fast cooling and receives
Contracting realizes that product crushes naturally, screened or magnetic separation separation.The production of medium high carbon manganese iron of the present invention can shorter time and compared with
It is completed at a temperature of low.Reactor in the present invention is resistance furnace or micro-wave oven, can be recycled for multiple times.
The present invention overcomes current blast furnace process and electric furnace process to produce upper energy consumption height, seriously polluted disadvantage, in technique
It is short with process, low energy consumption, the distinguishing features such as high-efficient, at low cost, environmental-friendly, it is easy to accomplish industrialized production has good
Good economic and social benefit.
Specific embodiment
Embodiment 1
Selecting the manganese ore (200 mesh) that manganese content be 20.3% is raw material, coke by weight in reducing agent: silicon carbide: carbon
Change calcium=85: 10: 5, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime=10: 15: 75, by weight in activator
Amount is than sodium carbonate: potassium nitrate: borax=48.6: 48.9: 2.5, by weight manganese dioxide in catalyst: manganese powder: metal
Iron powder: vanadic anhydride=25: 30: 30: 15, according to weight ratio manganese ore in mixture: reducing agent: additive: activator: catalysis
Agent=75: 14: 4: 4: 3 ratio is uniformly mixed, and is placed in the reactor that inner wall is graphite, reactor is placed in micro-wave oven,
Controlling furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1020 DEG C to mixture for 36 DEG C/min, and constant temperature 57min, then with 21
DEG C/heating rate of min is continuously heating to 1260 DEG C, and constant temperature 48min.Reaction product cools to 620 DEG C with the furnace, and from reaction
It takes out, is used with the cooling rate of 366 DEG C/min in device, 42 DEG C are quickly cooled under nitrogen protection, after material crushes naturally, through sieving
Divide and finished product high carbon ferromanganese can be obtained in magnetic separation, essential element content in high carbon ferromanganese are as follows: manganese content 62.6%, iron content
28.2%, carbon content 7.36%, phosphorus content are less than 0.10% (0.05%), sulfur content less than 0.10% (0.04%).
Embodiment 2
Selecting the manganese ore (180 mesh) that manganese content be 35.6% is raw material, coke by weight in reducing agent: silicon carbide: carbon
Change calcium: aluminium powder=85.7: 4: 6.5: 3.8, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime :=14.6: 8.2
: 77.2, by weight sodium carbonate in activator: potassium nitrate: borax=32.2: 35.6: 32.2, by weight dioxy in catalyst
Change manganese: manganese powder: metal iron powder: vanadic anhydride=16.5: 48.5: 25.7: 9.3, according to weight ratio manganese ore in mixture:
Reducing agent: additive: activator: catalyst=80: 11.2: 2.8: 2.4: 3.6 ratio is uniformly mixed, and being placed in inner wall is corundum
Reactor in, reactor is placed in micro-wave oven, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1098 DEG C to mixture for 15 DEG C/min, and constant temperature 38min, then with 45
DEG C/heating rate of min is continuously heating to 1210 DEG C, and constant temperature 28min.Products therefrom cools to 580 DEG C with the furnace, and from reaction
It takes out, is used with the cooling rate of 480 DEG C/min in device, 26 DEG C, after material crushes naturally are quickly cooled under CO2 gas shielded, warp
Finished product high carbon ferromanganese can be obtained in screening and magnetic separation, essential element content in high carbon ferromanganese are as follows: manganese content 63.7%, iron content
27.4%, carbon content 6.96%, phosphorus content are less than 0.15% (0.047%), sulfur content less than 0.02% (0.045%).
Embodiment 3
Selecting the manganese ore (100 mesh) that manganese content be 30.8% is raw material, coke by weight in reducing agent: silicon carbide: aluminium
Powder=88.2: 9: 2.8, by weight silica flour in additive: Fluorspar Powder: quick lime=2.8: 12.7: 84.5, it presses in activator
Weight ratio sodium carbonate: potassium nitrate: borax=25.1: 40.3: 22.6, by weight manganese dioxide in catalyst: manganese powder: gold
Belong to iron powder: vanadic anhydride=48.3: 27.3: 18.6: 5.8, according to weight ratio manganese ore in mixture: reducing agent: additive: living
Agent: catalyst=83: 9.5: 3.5: 2.8: 1.2 ratio is uniformly mixed, and is placed in the reactor that inner wall is magnesium aluminate spinel,
Reactor is placed in resistance furnace, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1030 DEG C to mixture for 48 DEG C/min, and constant temperature 10min, then with 12
DEG C/heating rate of min is continuously heating to 1280 DEG C, and constant temperature 58min.Products therefrom cools to 630 DEG C with the furnace, and from reaction
It is taken out in device, uses the cooling rate for being 360 DEG C/min with cooling rate, under helium protection, material is quickly cooled to 36 DEG C, object
Being sieved process after material natural separation can be obtained finished product high carbon ferromanganese, essential element content in high carbon ferromanganese are as follows: manganese content
65.3%, iron content 25.9%, carbon content 7.12%, phosphorus content are less than 0.15% (0.05%), sulfur content less than 0.02%
(0.04%).
Embodiment 4
Selecting the manganese ore (200 mesh) that manganese content be 40.3% is raw material, coke by weight in reducing agent: calcium carbide: aluminium
Powder=89.2: 9: 1.8.By weight silica flour in additive: Fluorspar Powder: quick lime=12.8: 10.9: 76.3.In activator
By weight sodium carbonate: potassium nitrate: borax=40.8: 20.5: 38.7.By weight manganese oxide, manganese powder, gold in catalyst
Category iron powder, vanadic anhydride=20.6: 28.1: 39.7: 11.6.
According to weight ratio manganese ore in mixture: reducing agent: additive: activator: catalyst=79: 13.2: 2.8: 1.8:
3.2 ratio is uniformly mixed, and is placed in the reactor that inner wall is graphite, reactor is placed in resistance furnace, control furnace atmosphere
For neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1060 DEG C to mixture for 24 DEG C/min, and constant temperature 46min, then with 58
DEG C/heating rate of min is continuously heating to 1218 DEG C, and constant temperature 48min.Products therefrom cools to 570 DEG C with the furnace, and from reaction
It is taken out in device, (420 DEG C/min) is quickly cooled down to 30 DEG C using nitrogen protection, it is available through screening process after material natural separation
Finished product high carbon ferromanganese, essential element content in high carbon ferromanganese are as follows: manganese content 70.8%, iron content 21.8%, carbon content 5.3%,
Phosphorus content is less than 0.10%, sulfur content less than 0.10%.
Embodiment 5
Selecting the manganese ore that manganese content is 49.3% is raw material, by weight coke in reducing agent: silicon carbide: calcium carbide: aluminium
Powder=81.3: 7.6: 8: 2.8, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime :=11.1: 19.8: 69.1,
By weight sodium carbonate in activator: potassium nitrate: borax=54.6: 36.9: 8.5, by weight manganese dioxide in catalyst: gold
Belong to manganese powder: metal iron powder: vanadic anhydride=37.6: 32.5: 21.2: 8.7, according to weight ratio manganese ore in mixture: reducing agent:
Additive: activator: catalyst=82.2: 11.6: 1.2: 3.2: 1.8 ratio is uniformly mixed, and being placed in inner wall is the anti-of corundum
It answers in device, reactor is placed in micro-wave oven, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1080 DEG C to mixture for 12 DEG C/min, and constant temperature 26min, then with 35
DEG C/heating rate of min is continuously heating to 1281 DEG C, and constant temperature 36min.It uses with the cooling rate of 360 DEG C/min, is protected in CO2 gas
32 DEG C, after material crushes naturally are quickly cooled under shield, finished product high carbon ferromanganese, high-carbon manganese can be obtained in screened (80 mesh) and magnetic separation
Essential element content in iron are as follows: manganese content 78.6%, iron content 15.3%, carbon content 4.9%, phosphorus content are less than 0.15%
(0.06%), sulfur content is less than 0.02% (0.05%).
Embodiment 6
Selecting the manganese ore (120 mesh) that manganese content be 45.6% is raw material, coke by weight in reducing agent: silicon carbide: carbon
Change calcium: aluminium powder=83: 3.3: 9.8: 3.9, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime :=6.9: 13.5
: 74.6, by weight sodium carbonate in activator: potassium nitrate: borax=59.6: 23.7: 16.7, by weight dioxy in catalyst
Change manganese: manganese powder: metal iron powder: vanadic anhydride=22.8: 33.7: 33.3: 10.2, according to weight ratio manganese ore in mixture
: reducing agent: additive: activator: catalyst=78: 13.9: 1.9: 3.7: 2.5 ratio is uniformly mixed, and it is rigid for being placed in inner wall
In beautiful reactor, reactor is placed in micro-wave oven, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1020 DEG C to mixture for 36 DEG C/min, and constant temperature 36min, then with 30
DEG C/heating rate of min is continuously heating to 1210 DEG C, and constant temperature 25min.Products therefrom cools to 580 DEG C with the furnace, and from reaction
It takes out, is used with the cooling rate of 420 DEG C/min in device, 28 DEG C, after material crushes naturally are quickly cooled under CO2 gas shielded, warp
Finished product high carbon ferromanganese can be obtained in screening and magnetic separation, essential element content in high carbon ferromanganese are as follows: manganese content 75.2%, iron content
17.2%, carbon content 6.1%, phosphorus content are less than 0.15% (0.05%), sulfur content less than 0.02% (0.06%).
Embodiment 7
Selecting the manganese ore (150 mesh) that manganese content be 26.7% is raw material, coke by weight in reducing agent: silicon carbide: carbon
Change calcium: aluminium powder=89.8: 4.5: 3.5: 2.2, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime :=9.9:
10.3: 79.8, by weight sodium carbonate in activator: potassium nitrate: borax=41.2: 30.6: 28.2, in catalyst by weight
Manganese dioxide: manganese powder: metal iron powder: vanadic anhydride=28.9: 19.5: 44.5: 7.1, according to weight ratio in mixture
Manganese ore: reducing agent: additive: activator: catalyst=84: 8.1: 2.6: 2.5: 2.8 ratio is uniformly mixed, and being placed in inner wall is
In the reactor of corundum, reactor is placed in micro-wave oven, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1050 DEG C to mixture for 41 DEG C/min, and constant temperature 42min, then with 52
DEG C/heating rate of min is continuously heating to 1290 DEG C, and constant temperature 12min.Products therefrom cools to 580 DEG C with the furnace, and from reaction
It takes out, is used with the cooling rate of 480 DEG C/min in device, 31 DEG C, after material crushes naturally are quickly cooled under CO2 gas shielded, warp
Finished product high carbon ferromanganese can be obtained in screening and magnetic separation, essential element content in high carbon ferromanganese are as follows: manganese content 64.3%, iron content
27.3%, carbon content 7.17%, phosphorus content are less than 0.15% (0.06%), sulfur content less than 0.02% (0.06%).
Embodiment 8
Selecting the manganese ore (180 mesh) that manganese content be 41.5% is raw material, coke by weight in reducing agent: silicon carbide: carbon
Change calcium: aluminium powder=86.5: 7.1: 4.8: 1.6, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime :=14.1:
13.8: 72.1, by weight sodium carbonate in activator: potassium nitrate: borax=41.2: 40.2: 18.6, in catalyst by weight
Manganese dioxide: manganese powder: metal iron powder: vanadic anhydride=28.2: 28.3: 34.2: 9.3, according to weight ratio in mixture
Manganese ore: reducing agent: additive: activator: catalyst=82: 12.8: 2.2: 1.5: 1.5 ratio is uniformly mixed, and is placed in inner wall
For in the reactor of corundum, reactor is placed in micro-wave oven, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1040 DEG C to mixture for 32 DEG C/min, and constant temperature 30min, then with 24
DEG C/heating rate of min is continuously heating to 1260 DEG C, and constant temperature 36min.Products therefrom cools to 580 DEG C with the furnace, and from reaction
It takes out, is used with the cooling rate of 600 DEG C/min in device, 42 DEG C, after material crushes naturally are quickly cooled under CO2 gas shielded, warp
Finished product high carbon ferromanganese can be obtained in screening and magnetic separation, essential element content in high carbon ferromanganese are as follows: manganese content 75.3%, iron content
16.8%, carbon content 6.18%, phosphorus content are less than 0.15% (0.06%), sulfur content less than 0.02% (0.04%).
Embodiment 9
Selecting the manganese ore that manganese content is 38.1% is raw material, by weight coke in reducing agent: silicon carbide: calcium carbide: aluminium
Powder=82.3: 9.8: 6.7: 1.2, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime :=6.8: 11.5:
81.7, by weight sodium carbonate in activator: potassium nitrate: borax=33.5: 49.3: 17.2, by weight dioxy in catalyst
Change manganese: manganese powder: metal iron powder: vanadic anhydride=38.7: 34.6: 20.5: 6.2, according to weight ratio manganese ore in mixture:
Reducing agent: additive: activator: catalyst=78: 15.8: 1.2: 2.1: 2.9 ratio is uniformly mixed, and being placed in inner wall is corundum
Reactor in, reactor is placed in micro-wave oven, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1070 DEG C to mixture for 36 DEG C/min, and constant temperature 21min, then with 16
DEG C/heating rate of min is continuously heating to 1230 DEG C, and constant temperature 52min.Products therefrom cools to 580 DEG C with the furnace, and from reaction
It takes out, is used with the cooling rate of 560 DEG C/min in device, 32 DEG C, after material crushes naturally are quickly cooled under CO2 gas shielded, warp
Finished product high carbon ferromanganese can be obtained in screening (200 mesh) and magnetic separation, essential element content in high carbon ferromanganese are as follows: manganese content 72.9%, iron
Content 19.7%, carbon content 5.95%, phosphorus content are less than 0.15% (0.06%), sulfur content less than 0.02% (0.05%).
Embodiment 10
Selecting the manganese ore that manganese content is 44.6% is raw material, by weight coke in reducing agent: silicon carbide: calcium carbide: aluminium
Powder=89.8: 5.6: 2.2: 2.4, by weight ultrafine quartz powder in additive: Fluorspar Powder: quick lime :=7.7: 14.1:
78.2, by weight sodium carbonate in activator: potassium nitrate: borax=48.1: 28.1: 23.8, by weight dioxy in catalyst
Change manganese: manganese powder: metal iron powder: vanadic anhydride=31.1: 30.2: 30.6: 8.1, according to weight ratio manganese ore in mixture:
Reducing agent: additive: activator: catalyst=75: 17.2: 2.9: 2.7: 2.2 ratio is uniformly mixed, and being placed in inner wall is corundum
Reactor in, reactor is placed in micro-wave oven, control furnace atmosphere is neutral or weak reducing atmosphere.
Control heating rate is rapidly heated to 1040 DEG C to mixture for 28 DEG C/min, and constant temperature 29min, then with 42
DEG C/heating rate of min is continuously heating to 1280 DEG C, and constant temperature 30min.Products therefrom cools to 580 DEG C with the furnace, and from reaction
It takes out, is used with the cooling rate of 420 DEG C/min in device, 35 DEG C, after material crushes naturally are quickly cooled under C02 gas shielded, warp
Finished product high carbon ferromanganese can be obtained in screening (150 mesh) and magnetic separation, essential element content in high carbon ferromanganese are as follows: manganese content 77.9%, iron
Content 14.8%, carbon content 5.73%, phosphorus content are less than 0.15% (0.06%), sulfur content less than 0.02% (0.05%).
Claims (8)
1. a kind of method that manganese oxide ore prepares high carbon ferromanganese, which is characterized in that by manganese oxide ore, reducing agent, additive, activation
Agent, catalyst are mixed to get mixture, and mixture is heated up, and first the mixture is warming up at 1050 ± 50 DEG C and carries out one
Section solid state reduction is then warming up to two sections of solid state reductions of progress at 1250 ± 50 DEG C again, then cools to reduzate with the furnace
600±50℃；Again under controlled atmosphere, to be greater than the cooling rate of 360 DEG C/min, reaction product is quickly cooled down to obtain height
Carbon ferromanganese；
The reducing agent is coke, also comprising at least two in silicon carbide, calcium carbide, aluminium powder；
The additive is silica flour, Fluorspar Powder and quick lime；
The activator is sodium carbonate, potassium nitrate and borax；
The catalyst is manganese oxide, manganese powder, metal iron powder and vanadic anhydride；
Manganese ore, reducing agent, additive, activator and catalyst are mixed by following weight quality percentage, and 75-85 parts of manganese ore,
8-20 parts of reducing agent, 1-4 parts of additive, 1-4 parts of activator, 1-4 parts of catalyst.
2. the method that manganese oxide ore as described in claim 1 prepares high carbon ferromanganese, which is characterized in that in reducing agent, coke
Parts by weight are 80 ~ 90 parts；The parts by weight of silicon carbide are 3 ~ 10 parts；The parts by weight of calcium carbide are 3.5 ~ 7 parts；Parts by weight in aluminium powder
It is 1 ~ 4 part.
3. the method that manganese oxide ore as described in claim 1 prepares high carbon ferromanganese, which is characterized in that in additive, Fluorspar Powder
Parts by weight be 8 ~ 20 parts；The parts by weight of quick lime are 68 ~ 85 parts；2 ~ 15 parts of the parts by weight of silica flour.
4. the method that manganese oxide ore as described in claim 1 prepares high carbon ferromanganese, which is characterized in that in activator, sodium carbonate
Weight percent be 25-60 part, the weight percent of potassium nitrate is 20-50 parts, and the weight percent of borax is 2-40 parts.
5. the method that manganese oxide ore as described in claim 1 prepares high carbon ferromanganese, which is characterized in that in catalyst, manganese oxide
Weight percent be 15-50 parts, the weight percent of manganese powder is 19-50 parts, the weight percent of metal iron powder is 15-
45 parts, the weight percent of vanadic anhydride is 5-15 parts.
6. the method for preparing high carbon ferromanganese such as the described in any item manganese oxide ores of claim 1 ~ 5, which is characterized in that with 10-50
DEG C/mixture is warming up to one section of solid state reduction temperature by the heating rate of min, and constant temperature 5-60min at a temperature of described；One
After section solid state reduction, then two sections of solid state reduction temperature are heated to the heating rate of 10-60 DEG C/min, and constant temperature 12-60min is extremely
Fully reacting；Solid state reduction process carries out under for neutral or weak reducing atmosphere.
7. the method that manganese oxide ore as described in claim 1 prepares high carbon ferromanganese, which is characterized in that the manganese oxide ore is
Manganese oxide ore beneficiation concentrate or the fine ore that 40 mesh to 200 mesh are finely ground to for manganese oxide ore；The manganese content of the manganese oxide ore is
18-50%；
The heating furnace that solid state reduction process uses is resistance furnace or micro-wave oven.
8. the method that manganese oxide ore as described in claim 1 prepares high carbon ferromanganese, which is characterized in that manganese content in high carbon ferromanganese
60%-80%, iron content 10%-35%, carbon content 4.0%-7.5%, phosphorus content are less than 0.10%, sulfur content less than 0.10%.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302586A (en) * | 2008-07-03 | 2008-11-12 | 太原理工大学 | Microwave heating, solid state reduction and gaseous dephosphorization method for manganese ore powder |
| CN102242252A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | Method for preparing high-nickel concentrate from low-grade red soil nickel ore |
| CN102373333A (en) * | 2011-09-29 | 2012-03-14 | 云南文山斗南锰业股份有限公司 | Method for preparing high carbon ferromanganese |
| CN103643094A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of high-carbon ferromanganese |
| CN104561548A (en) * | 2014-12-10 | 2015-04-29 | 昆明理工大学 | Method for producing high-carbon ferromanganese through combination of various manganese ores |
-
2017
- 2017-09-01 CN CN201710783987.2A patent/CN107723403B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101302586A (en) * | 2008-07-03 | 2008-11-12 | 太原理工大学 | Microwave heating, solid state reduction and gaseous dephosphorization method for manganese ore powder |
| CN102242252A (en) * | 2011-06-29 | 2011-11-16 | 中南大学 | Method for preparing high-nickel concentrate from low-grade red soil nickel ore |
| CN102373333A (en) * | 2011-09-29 | 2012-03-14 | 云南文山斗南锰业股份有限公司 | Method for preparing high carbon ferromanganese |
| CN103643094A (en) * | 2013-11-27 | 2014-03-19 | 攀钢集团研究院有限公司 | Smelting method of high-carbon ferromanganese |
| CN104561548A (en) * | 2014-12-10 | 2015-04-29 | 昆明理工大学 | Method for producing high-carbon ferromanganese through combination of various manganese ores |
Non-Patent Citations (2)
| Title |
|---|
| 氧化锰矿碳热法固相还原制备锰铁合金;周超洋;《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技I辑》;20130215;第15-16页 |
| 高铁锰矿固态还原-磁选及强化技术;柴斌;《中国优秀硕士学位论文全文数据库（电子期刊） 工程科技I辑》;20140515;第11、13、23页 |
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