CN110066916A - A method of utilizing coke-oven plant's square carbonization chamber reduced oxide mineral - Google Patents
A method of utilizing coke-oven plant's square carbonization chamber reduced oxide mineral Download PDFInfo
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- CN110066916A CN110066916A CN201910512499.7A CN201910512499A CN110066916A CN 110066916 A CN110066916 A CN 110066916A CN 201910512499 A CN201910512499 A CN 201910512499A CN 110066916 A CN110066916 A CN 110066916A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
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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
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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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
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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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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Abstract
The present invention provides a kind of method using coke-oven plant's square carbonization chamber reduced oxide mineral, belongs to metal reduction technique field.The method using coke-oven plant's square carbonization chamber metal reduction furnace reduced oxide mineral, including mixing, and it is pressed at the top of spherical use by ball press and is packed into square carbonization chamber progress reduction reaction, or block-like oxide is directly broken into well-regulated fritter mixing carbonaceous reductant and is packed into square carbonization chamber progress reduction reaction from top again, or oxide is pressed into hole honeycomb coaly and is carried out in such a way that pallet is pushed into square carbonization chamber progress reduction reaction from side again, more to adapt to the oxide mineral reduction reaction under different shape, generate elemental metals material.
Description
Technical field
The invention belongs to metal reduction technique fields, and in particular to a kind of to utilize coke-oven plant's square carbonization chamber reduced oxide
The method of mineral.
Background technique
The furnace kind of existing country's oxidized metal reduction furnace is revolution cellar metal reduction furnace respectively, erects cellar metal reduction furnace, tunnel
Store metal reduction furnace, the common oxide mineral metal reduction furnace such as rotary hearth furnace metal reduction furnace, wherein the operation point of revolution cellar in road
Gas-based reduction, gas-based reduction is at high cost using natural gas reduction, and the reduction reaction time is long, and coal base reduction is easy to operate, needs big
Amount coal injection environmental protection does not reach requirement.Shaft furnace enters furnace point oxidation lump ore and oxide pellet enters furnace, and cloth uses one layer of coal
One layer of oxide mineral enters furnace and completes reduction reaction, easy to operate, but the excessively high easy freezing of a furnace of temperature causes obstructing problem of coming out of the stove, reduction
Effect is uneven.Tunnel cellar enters cellar by the way of fine ore briquetting, and fine ore is beaten before entering cellar and is pressed into block type, and being packed into fire-resistant can need to order
Phase with changing, causes cost excessively high, and low output.Turn low furnace to be risen using fine ore mode and reducing agent mixing pressure ball feeding turntable
Temperature reaches specific reaction temperature in mineral and is sent into reduction room progress reduction reaction, and reduction reaction completes material and enters cooling chamber
It is cooling to prevent from aoxidizing into air.Coke-oven plant's square carbonization chamber coking makes into coal firm by ramming wall supporting plate side and fills feeding charing
Room, and coal top in bulk is packed into square charing, the heat transmitted by two side combusion chambers, by coal charge in the condition for completely cutting off air
Lower heating, gaseous products generated are escaped by the tedge of carbonization chamber top end part, remain in the indoor solid coke of charing
Coke heap is gone out the oven door opening before and after carbonization chamber with ram by factory's product, is sent into the cooling workshop of water.
Currently, domestic coke-oven plant is due to factory's energy environmental issue, oneself is shut down and is removed, and can only be closed according to developed countries
Stop steelmaking furnace ironmaking, be just unable to satisfy domestic steel demand, reduced iron (sponge iron) is much not achieved in existing reduction cellar
Supply amount.
Summary of the invention
The present invention is solved by providing a kind of method using coke-oven plant's square type Metal reduction furnace reduced oxide mineral
Metal reduced oxide mineral reduction is at high cost in the prior art, low, the technical problems such as effect difference are measured by factory, has low cost, produces
The unlimited amplification of amount, the technical effect of efficient reducing metal.
To achieve the above object, the technical solution of the invention is as follows:
A method of utilizing coke-oven plant's square carbonization chamber reduced oxide mineral, comprising the following steps:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: mixing: oxide mineral powder, reducing agent, sticking agent with 1:(0.08-0.15): the ratio of (0.01-0.O3)
Example mixing, or oxide mineral and sticking agent in 1:(0.01-0.O3) ratio mix, after being stirred with blender obtain mixture
Material；
S3: setting: the mixed material with reducing agent is pressed into spherical or is pressed into honeycomb coaly, and carries out drying and processing；
Or the mixed material without reducing agent is pressed into spherical or pelletizer and causes particle pellet, and carries out drying and processing；
S4: reduction: the glomerate mixture with reducing agent that will shape in step S3 is by dress at the top of rectangular carbonization chamber
Enter to reduction reaction is carried out in square carbonization chamber, generates elemental metals material；Or by step S3 figuration honeycomb coaly it is mixed
Object is closed by carrying out reduction reaction in square supporting plate feeding square carbonization chamber, generates elemental metals material；Or it will be without reducing agent
Spherical oxide mineral and particle oxide pellet beyond the region of objective existence portion's hybrid particles carbonaceous reductant by being packed at the top of square carbonization chamber
Reduction reaction is carried out in square carbonization chamber；
S5: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into height
Warm dress electric furnace in carry out separated and dissolved, make its by the metal containing simple substance iron substance by dissolution after and other elemental metals into
Row separation；
S6: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cold
But it is lower than 100 DEG C to temperature, isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S7: ore grinding sorting: elemental metals material after cooling being crushed and is ground, is sorted with magnetic separator, magnetic
Iron substance is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
Preferably, in the step S1 oxide ore raw mineral materials be iron ore extract powder, sefstromite fine powder, ferrous manganese ore fine powder,
Any one oxygen-containing mine in the oxide minerals powder such as ferronickel tantalite power, ferrochrome fine powder, zinc-iron tantalite power, iron scale (iron scale)
Powder or any one for aoxidizing blocky oxycompound mineral.
Preferably, the reduction reaction in the S4 step can also be by by the mixture of figuration honeycomb coaly in step S3
It is sent into square carbonization chamber by square supporting plate and carries out reduction reaction, generate elemental metals material；
Preferably, well-regulated small blocky metal oxide will be broken into step S1 by small blocky metal oxide and charcoal
Matter reducing agent is with 1:(0.1-0.2) reduction reaction is carried out, generate elemental metals material；
Preferably, the reduction reaction temperature in the S4 step is 800 DEG C -1150 DEG C, time 12H-24H.
Preferably, the metal oxide mineral, reducing agent, sticking agent with 1:(0.08-0.1 preferably, the reducing agent is
One of charcoal, coal dust (grain), coke powder (grain), semi-coke powder (grain) or more than one mixtures, the sticking agent are starch
Class.
Preferably, blender mixing speed is 10-15r/min, mixing time 8-20min in the step S1.
Preferably, in the step S3 temperature of reduction reaction between 800-1150 DEG C.
Preferably, elemental metals material high temperature hot charging is sent into cell therefor in cooling workshop in the step S4
Nitrogen is injected to cool down elemental metals in face.
Preferably, in the step S5, the liquid of the simple substance iron substance after separation becomes advanced steel by electric furnace is quenched
And special steel alloy, other and the immiscible elemental metals of iron pass through the quenched height that becomes of electric furnace and add matter product.
Preferably, the cooling further includes being cooled down using pressure sintering.
Preferably, the pressure sintering is that high temperature feeding hot-press equipment is hot pressed into shape after oxide mineral completes reduction reaction
High density is cylindric, in cooling procedure the oxygen inside air cannot be introduced into high density it is cylindric in aoxidized with elemental metals
Reaction, to prevent elemental metals material from reoxidizing.
The beneficial effects of the present invention are: the present invention, by oxide mineral and reducing agent, sticking agent mixes in proportion, it is pressed into ball
Or bulk oxide mineral are broken into regular uniform fritter mixing carbonaceous reductant by being packed into square at the top of rectangular carbonization chamber
Carbonization chamber, which is restored or suppressed into honeycomb briquette shape and is placed on supporting plate, is fed in coke-oven plant's square carbonization chamber by side opening fire door
Restored, be reduced into product and release carbonization chamber, be sent into cooling workshop and be cooled into product, have it is easy to operate, directly, yield
Greatly, the features such as reducing metal quality is high-efficient, easy to operate, and Reductive stability is good carries out oxide mineral using the method for the present invention
Reduction reaction, the metal reduction rate that oxide mineral is reduced into elemental metals reach 90 or more percent.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Specific embodiment
For a better understanding of the technical solution of the present invention, in conjunction with appended figures and specific embodiments
Technical solution of the present invention is described in detail.
Referring to Fig. 1, in following embodiment, the method using coke-oven plant's metal reduction furnace reduced oxide mineral,
The following steps are included:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: mixing: oxide mineral, reducing agent, sticking agent are mixed, mixed material is obtained after being stirred with blender；Or handle
Oxide mineral powder, sticking agent mixing, obtain mixed material after being stirred with blender；
S3: setting: being pressed into spherical or be pressed into honeycomb coaly the mixed material for having reducing agent obtained in S2 step, and
Carry out drying and processing；Or the mixed material without reducing agent is pressed into spherical or pelletizer and causes particle pellet, and is dried
Dry-cure；
S4: reduction: the glomerate mixture with reducing agent that will shape in step S3 is by dress at the top of rectangular carbonization chamber
Enter to reduction reaction is carried out in square carbonization chamber, generates elemental metals material；Or by step S3 figuration honeycomb coaly it is mixed
Object is closed by carrying out reduction reaction in square supporting plate feeding square carbonization chamber, generates elemental metals material；Or it will be crushed in step S1
Carbonaceous reductant is directly mixed at the oxide mineral of regular fritter shape, oxide ore material is packed by top and is gone back after mixing
Original reaction, generates elemental metals material: or will be without the spherical oxide mineral of reducing agent and particle oxide pellet beyond the region of objective existence
Portion's hybrid particles carbonaceous reductant is by carrying out reduction reaction in loading to square carbonization chamber at the top of square carbonization chamber；
S5: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into height
Warm dress electric furnace in carry out separated and dissolved, make its by the metal containing simple substance iron substance by dissolution after and other elemental metals into
Row separation,
S6: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cold
But it is lower than 100 DEG C to temperature, isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S7: ore grinding sorting: elemental metals material after cooling being crushed and is ground, is sorted with magnetic separator, magnetic
Iron substance is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
Metal oxide mineral is iron ore extract powder, sefstromite fine powder, ferrous manganese ore fine powder, josephinite essence in the step S1 material
Oxidiferous mineral in powder, ferrochrome fine powder and zinc-iron tantalite power any one.Any one of oxygen-containing bulk oxide mineral.
The reducing agent is one of charcoal, coal dust (grain), coke powder (grain), semi-coke powder (grain) or more than one mixing
Object, the sticking agent are one of starch, resin, industrial glue or more than one mixtures.
The cooling further includes being cooled down using pressure sintering, and the pressure sintering is after oxide mineral completes reduction reaction
High temperature is sent into hot press device and be hot pressed into that high density is cylindric, and the oxygen inside air cannot be introduced into highly dense in cooling procedure
Spend it is cylindric in elemental metals occur oxidation reaction, to prevent elemental metals material from reoxidizing.
Embodiment one:
The method using coke-oven plant's square type Metal reduction furnace reduced oxide mineral, comprising the following steps:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: mixing: mealy oxide mineral, reducing agent, sticking agent are mixed in the ratio of 1:0.1:0.01, use blender
Mixed material is obtained after stirring, blender mixing speed is 20r/min, mixing time 10min；
S3: setting: by ball press being pressed into mixture obtained in S2 step spherical, and is dried by dryer
Processing；
S4: reduction: the glomerate mixture that will shape in step S3 is carbonized by being packed at the top of rectangular carbonization chamber to square
Indoor carry out reduction reaction generates elemental metals material；
S5: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into height
Warm dress electric furnace in carry out separated and dissolved, make its by the metal containing simple substance iron substance by dissolution after and other elemental metals into
Row separation；
S6: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cold
But it is lower than 100 DEG C to temperature, isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S7: ore grinding sorting: elemental metals material after cooling being crushed and is ground, is sorted with magnetic separator, magnetic
Iron substance is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
Embodiment two:
The method using coke-oven plant's square type Metal reduction furnace reduced oxide mineral, comprising the following steps:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: mixing: mealy oxide mineral and sticking agent are mixed in the ratio of 1:0.01, must be mixed after being stirred with blender
Material is closed, blender mixing speed is 20r/min, mixing time 10min；
S3: setting: mixture obtained in S2 step is caused pelletizing by pelletizer, and is dried by dryer
Processing；
S4: reduction: the glomerate mixture that will shape in step S3 is carbonized by being packed at the top of square carbonization chamber to square
Indoor carry out reduction reaction generates elemental metals material；
S5: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into height
Warm dress electric furnace in carry out separated and dissolved, make its by the metal containing simple substance iron substance by dissolution after and other elemental metals into
Row separation；
S6: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cold
But it is lower than 100 DEG C to temperature, isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S7: ore grinding sorting: elemental metals material after cooling being crushed and is ground, is sorted with magnetic separator, magnetic
Iron substance is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
Embodiment three:
The method using coke-oven plant's square type Metal reduction furnace reduced oxide mineral, comprising the following steps:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: reduction: will be broken into step S1 the small block-like oxide mineral mine of rule directly mix carbonaceous reductant into
Row reduction reaction generates elemental metals material；
S3: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into height
Warm dress electric furnace in carry out separated and dissolved, make its by the metal containing simple substance iron substance by dissolution after and other elemental metals into
Row separation；
S4: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cold
But it is lower than 100 DEG C to temperature, isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S5: ore grinding sorting: elemental metals material after cooling being crushed and is ground, is sorted with magnetic separator, magnetic
Iron substance is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
Example IV:
The method using coke-oven plant's square type Metal reduction furnace reduced oxide mineral, comprising the following steps:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: mixing: mealy oxide mineral, reducing agent, sticking agent are mixed in the ratio of 1:0.1:0.02, use blender
Mixed material is obtained after stirring, blender mixing speed is 15r/min, mixing time 30min；
S3: setting: by ball press being pressed into mixture obtained in S2 step spherical, and is dried by dryer
Processing；
S4: reduction: the glomerate mixture that will shape in step S3 is carbonized by being packed at the top of rectangular carbonization chamber to square
Indoor carry out reduction reaction generates elemental metals material；
S5: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into height
Warm dress electric furnace in carry out separated and dissolved, make its by the metal containing simple substance iron substance by dissolution after and other elemental metals into
Row separation；
S6: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cold
But it is lower than 100 DEG C to temperature, isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S7: ore grinding sorting: elemental metals material after cooling being crushed and is ground, is sorted with magnetic separator, magnetic
Iron substance is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
Embodiment five:
The method using coke-oven plant's square type Metal reduction furnace reduced oxide mineral, comprising the following steps:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: mixing: mealy oxide mineral and sticking agent are mixed in the ratio of 1:0.02, must be mixed after being stirred with blender
Material is closed, blender mixing speed is 15r/min, mixing time 30min；
S3: setting: mixture obtained in S2 step is caused pelletizing by pelletizer, and is dried by dryer
Processing；
S4: reduction: the glomerate mixture that will shape in step S3 is carbonized by being packed at the top of square carbonization chamber to square
Indoor carry out reduction reaction generates elemental metals material；
S5: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into height
Warm dress electric furnace in carry out separated and dissolved, make its by the metal containing simple substance iron substance by dissolution after and other elemental metals into
Row separation；
S6: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cold
But it is lower than 100 DEG C to temperature, isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S7: ore grinding sorting: elemental metals material after cooling being crushed and is ground, is sorted with magnetic separator, magnetic
Iron substance is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
Principle explanation:
The present invention is carried out using existing coke-oven plant's square carbonization chamber (being also known as square vacuum metal reduction furnace in the present invention)
Metal oxide mineral are reduced into elemental metals, are pressed into spherical after oxide mineral is mixed with other adminiclies, are pressed into honeycomb
Coaly is broken into blocky mixing carbonaceous reductant material, enters square carbonization chamber with different mode of entrance, and according to oxidation
The type reduction temperatures of object mineral adjusts charing room temperature, reducing agent generate CO gas and H2 gas with
Oxygen inside oxide mineral reacts to form CO2 gas and H2O water vapour from the evolution of the tedge of carbonization chamber top end part, then imports
Exhaust gas purifying treatment system is cleaned into qualified discharge object, and carbonizes indoor oxide mineral and be reduced into elemental metals
Material is re-fed into cooling workshop and is cooled down.
Present invention utilizes the conditions such as the temperature of coke-oven plant's square carbonization chamber, equipment, time, carry out reduced oxide mineral.
In above-described embodiment, reducing agent is using carbonaceous classes such as charcoal, coal dust (grain), coke powder (grain), semi-coke powder (grain), in specific temperature
The CO gas and H2 gas of lower generation react formation in (the 800 DEG C or more) generations of specific temperature with the oxygen in oxide mineral
CO2 gas and H2O water vapor gas discharge furnace cellar, metal oxide mineral form elemental metals in the process.In specific temperature
Degree is lower to shorten oxide mineral recovery time saving cost.Sticking agent is using starch, polymerization species (including glue, industrial glue, tree
Rouge etc.), suitable water is added in use, by oxide mineral powder, alite paste mixing, ball press pressure ball, honeycomb briquet making making machine
It is pressed into honeycomb briquette shape, prevents material from being formed in the case where entering the hot conditions into furnace loosely.
By mixed material pressure ball or it is pressed into honeycomb briquette shape, oxide mineral bulk is broken into regular small blocky mixing
Carbonaceous reductant is packed into material every time and restores up to 40-1.Material is carried out pressure ball compared with the existing technology by this step, drying, then
The method for being sent into turntable reduction, the present invention have many advantages, such as to save technique, improve efficiency, reduce cost, the unlimited amplification of factory's amount.
It is preferably between 800-1150 DEG C, when Indoor Temperature reaches reduction that the temperature of reduction reaction is carried out in square carbonization chamber
The gas that the when marquis of agent generation CO gas and H2 gas volatilizes takes away the oxygen in oxide mineral, to form CO2 and H2O water
Steam volatilizes outside carbonization chamber, and oxide mineral forms elemental metals product, and the time of reduction reaction and temperature are according to oxide
Depending on the fineness of mineral and the composition of material structure, reaction proceeds to takes a small amount of metalliferous material to be detected whether after a certain period of time
Fully reacting.
Existing coke-oven plant goes out oven coke cooling system when coke releases cooling workshop shower water at high operating temperatures
Mode cools down coke, causes to pollute on a large scale, to environmental effects.The present invention is also primary in coke-oven plant's square carbonization chamber
The nitrogen type of cooling is used when producing cooling elemental metals, the large-scale production reducing metal type of cooling domestic at present does not have any one
It is cooling using nitrogen, nitrogen production equipment is installed additional according to the practical transformation factory in coke-oven plant, when reducing metal material releases reduction cellar
When be also that receptacle injects the cooling elemental metals of nitrogen in direct hot charging to a note nitrogen cascade, be cooled to specific temperature
Elemental metals material will not generate oxidation reaction under the conditions of degree.Hot-press cooling is the hot press for using 600 kilograms of pressure or more, when
Material high temperature hot pressing of coming out of the stove in reducing metal is cylindric at high density because density height make air cannot be introduced into inside elemental metals and
Prevent elemental metals from reoxidizing.Oxide mineral reduction reaction is carried out using the method for the present invention, oxide mineral is reduced into simple substance
The reduction rate of metal reaches 90% or more.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (6)
1. a kind of method using coke-oven plant's square carbonization chamber reduced oxide mineral, which comprises the following steps:
S1: broken: reguline metal oxide is carried out broken powdering or well-regulated small bulk by crusher；
S2: mixing: oxide mineral powder, reducing agent, sticking agent are mixed, mixed material is obtained after being stirred with blender；Or oxygen
Compound mineral powder, sticking agent mixing, obtain mixed material after being stirred with blender；
S3: setting: the mixed material with reducing agent is pressed into spherical or is pressed into honeycomb coaly, and carries out drying and processing；Or handle
Spherical or pelletizer is pressed into without the mixed material of reducing agent and causes particle pellet, and carries out drying and processing；
S4: reduction: the glomerate mixture with reducing agent that will shape in step S3 at the top of rectangular carbonization chamber by being packed into extremely
Reduction reaction is carried out in square carbonization chamber, generates elemental metals material；Or by the mixture of figuration honeycomb coaly in step S3
It is sent into square carbonization chamber by square supporting plate and carries out reduction reaction, generate elemental metals material；Or it will be without the ball of reducing agent
Shape oxide mineral and particle oxide pellet beyond the region of objective existence portion's hybrid particles carbonaceous reductant at the top of square carbonization chamber by being packed into side
Reduction reaction is carried out in type carbonization chamber；
S5: separation: after oxide is reduced into elemental metals, square carbonization chamber is released under the condition of high temperature, and be packed into high warm
It fills and carries out separated and dissolved in electric furnace, divide it metal containing simple substance iron substance after dissolution with other elemental metals
From；
S6: cooling: elemental metals material to be sent into cooling workshop cooling after the completion of reduction reaction, the method for filling nitrogen is cooled to
Temperature is lower than 100 DEG C, and isolation air enters inside elemental metals material, prevents elemental metals material from reoxidizing；
S7: ore grinding sorting: elemental metals material after cooling is crushed and is ground, is sorted with magnetic separator, magnetic iron object
Matter is sucked out, and is sorted and is come without other metalliferous materials of magnetic.
2. the method that metal oxide mineral according to claim 1 is directly reduced to elemental metals, it is characterised in that: described
Reduction reaction in step S4 can also be by will directly be broken into well-regulated small blocky metal oxide and carbonaceous in step S1
Reducing agent carries out reduction reaction, generates elemental metals material.
3. the method that metal oxide mineral according to claim 1 is directly reduced to elemental metals, it is characterised in that: described
In step S2, the metal oxide mineral, reducing agent, sticking agent are with 1:(0.08-0.15): the ratio mixing of (0.01-0.O3).
4. the method that metal oxide mineral according to claim 1 is directly reduced to elemental metals, it is characterised in that: described
In step S2, the oxide mineral and sticking agent are in 1:(0.01-0.O3) ratio mixing.
5. the method that metal oxide mineral according to claim 2 is directly reduced to elemental metals, it is characterised in that: described
Small reguline metal oxide and carbonaceous reductant are in step S4 with 1:(0.1-0.2) ratio restored.
6. the method that metal oxide mineral according to claim 1 is directly reduced to elemental metals, it is characterised in that: described
In step S1 oxide ore raw mineral materials be iron ore extract powder, sefstromite fine powder, ferrous manganese ore fine powder, ferronickel tantalite power, ferrochrome fine powder,
Zinc-iron tantalite power, any one oxygen-containing miberal powder in iron scale (iron scale) oxide mineral powder aoxidize blocky oxycompound mine
Any one of object.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910337107.8A CN109929994A (en) | 2019-04-25 | 2019-04-25 | A method of utilizing coke-oven plant's square carbonization chamber reduced oxide mineral |
| CN2019103371078 | 2019-04-25 |
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| Publication Number | Publication Date |
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| CN110066916A true CN110066916A (en) | 2019-07-30 |
| CN110066916B CN110066916B (en) | 2020-11-06 |
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| WO2020216320A1 (en) * | 2019-04-25 | 2020-10-29 | 李海鸥 | Method for reducing oxide ores by using square carbonization chamber of coking plant |
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| WO2020216320A1 (en) | 2020-10-29 |
| CN109929994A (en) | 2019-06-25 |
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