CN110004261A - The preparation process of FeO in a kind of metallurgical cinder - Google Patents
The preparation process of FeO in a kind of metallurgical cinder Download PDFInfo
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- CN110004261A CN110004261A CN201910440651.5A CN201910440651A CN110004261A CN 110004261 A CN110004261 A CN 110004261A CN 201910440651 A CN201910440651 A CN 201910440651A CN 110004261 A CN110004261 A CN 110004261A
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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
- C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
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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
- C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
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Abstract
The present invention relates to the preparation processes of FeO in metallurgical cinder a kind of, belong to metallurgical technology field.To solve the problems, such as that the FeO of prior art preparation is unstable, the present invention provides the preparation processes of FeO in metallurgical cinder a kind of, by reduced iron powder, Fe2O3And SiO2Mixed material is obtained after being fully ground mixing, carbon dust is added in mixed material and is heated to 1100~1500 DEG C, held for some time generates stable FeOSiO2Product is crushed, drying to obtain is containing the slag ingredient for stablizing FeO.FeO property in slag ingredient prepared by the present invention is stablized, and is not easy to be oxidized to ferric oxide in air, avoids the ferriferous oxide for largely generating non-FeO in slag.The application preparation process has the advantages that process is short, easy to operate, at low cost, be capable of forming with the close constituent element of practical metallurgical cinder, being applied to field of metallurgy can satisfy the demand of required FeO in metallurgical cinder.
Description
Technical field
The invention belongs to the preparation processes of FeO in metallurgical technology field more particularly to metallurgical cinder a kind of.
Background technique
FeO play the role of during metallurgical technology it is very important, content of the FeO in sinter be evaluation sintering life
The composite target produced, has very with performances such as drum strength, cold strength, low temperature reduction degradation index, the reproducibilities of sinter
Big correlation, and then influence the technological operation of blast furnace ironmaking process volume increase tar reduction synergy；In HIsmelt and oxygen top blown smelting
In reduction iron-smelting process and steelmaking process, the height of FeO content directly affects the solution rate of lime, slugging in slag
Speed, the quality of dephosphorization effect, clinker splash and return dry, iron loss and the erosion degree to furnace lining；Study FeO in slag
Content is of great significance.
In the prior art, the preparation of FeO needed for slag, one is utilized in heating ferrous oxalate system under isolation air conditions
?；Second is that restoring ferric oxide by controlling suitable reducing atmosphere.But the FeO of existing method preparation is unstable,
Iron and Fe are resolved under conditions of being lower than 575 DEG C3O4, therefore, inertia must be passed to during configuring the slag containing FeO
Gas is protected, to prevent FeO from aoxidizing；In addition, in the market, the price of the pure chemistry reagent of FeO is more expensive, and average price is
1900-2900 member/Kg, and it is not easy to maintain, Slag Properties influence is brought to using pure chemistry reagent configuration slag research FeO
Very big inconvenience.
Summary of the invention
To solve the problems, such as that the FeO of prior art preparation is unstable, the present invention provides the systems of FeO in metallurgical cinder a kind of
Standby technique.
Technical solution of the present invention:
The preparation process of FeO in a kind of metallurgical cinder, by reduced iron powder, Fe2O3And SiO2It mixes and fills by certain mol proportion
Divide after being ground and obtain mixed material, adds carbon dust by the molar ratio of certain carbon dust and reduced iron powder in the mixed material
Reaction system is obtained, reaction system is heated to by 1100~1500 DEG C and held for some time with certain heating rate, is generated steady
Fixed FeOSiO2Product, by the FeOSiO after furnace cooling2Product is broken, and drying to obtain is containing the slag for stablizing FeO
Ingredient.
Further, the addition manner of the carbon dust is in the mixed material surface bedding carbon dust.
Further, the addition manner of the carbon dust is uniformly to mix the mixed material with carbon dust.
Further, the addition manner of the carbon dust be by the mixed material and carbon dust after evenly mixing its surface again
Bedding carbon dust.
Further, the reduced iron powder, Fe2O3And SiO2Molar ratio be 1:1:1.5.
Further, the molar ratio of the carbon dust and reduced iron powder is 1~4:1.
Further, the carbon dust is the charcoal powder or coke blacking that granularity is 100~300 mesh.
Further, the heating rate is 5 DEG C/min, and the soaking time is 30min.
Further, the heating temperature is 1100 DEG C, 1200 DEG C, 1300 DEG C, 1400 DEG C or 1500 DEG C.
Further, the partial size containing the slag ingredient for stablizing FeO is 100-300 mesh.
Beneficial effects of the present invention:
The present invention provides the preparation processes of FeO in metallurgical cinder a kind of, using reduced iron powder and analyze pure Fe2O3In height
Chemical reaction is carried out under temperature and with SiO2Fixed mode is obtained containing the slag ingredient for stablizing FeO, can be avoided FeO in air
It is oxidized to the ferriferous oxide of trivalent, therefore avoids the ferriferous oxide for largely generating non-FeO in slag.
Preparation process flow of the present invention is short, easy to operate, used to go back during the preparation process without being passed through inert gas
Former iron powder and the pure Fe of analysis2O3Price is low, has the advantages that at low cost.It is melted using 1100 DEG C~1500 DEG C of high temperature, at
Divide uniformly, is capable of forming and the close constituent element of practical metallurgical cinder, obtained FeO are the 70%- of Theoretical Design calculated value
95%, meet the demand of required FeO in metallurgical cinder.
Specific embodiment
Below with reference to embodiment, the following further describes the technical solution of the present invention, and however, it is not limited to this, all right
Technical solution of the present invention is modified or replaced equivalently, and without departing from the spirit and scope of the technical solution of the present invention, should all be contained
Lid is within the protection scope of the present invention.
Embodiment 1
The preparation process of FeO in a kind of metallurgical cinder, by reduced iron powder, Fe2O3And SiO2It mixes and fills by certain mol proportion
Divide after being ground and obtain mixed material, adds carbon dust by the molar ratio of certain carbon dust and reduced iron powder in the mixed material
Reaction system is obtained, reaction system is heated to by 1100~1500 DEG C and held for some time with certain heating rate, is generated steady
Fixed FeOSiO2Product, by the FeOSiO after furnace cooling2Product is broken, and drying to obtain is containing the slag for stablizing FeO
Ingredient.
Embodiment 2
The preparation process of FeO in a kind of metallurgical cinder, by reduced iron powder, Fe2O3And SiO21:1:1.5 is mixed in molar ratio
And mixed material is obtained after being fully ground mixing, the molar ratio that carbon dust and reduced iron powder are pressed in the mixed material is 1~4:1
It adds carbon dust and obtains reaction system, reaction system is heated to 1100~1500 DEG C with the heating rate of 5 DEG C/min and keeps the temperature one
It fixes time, generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is broken, and drying to obtain contains
Stablize the slag ingredient of FeO.
The present embodiment is in the MoSi for not leading to any protection gas2In furnace, by configuring slag with pure chemistry reagent.This reality
Example is applied in mixed material surface bedding charcoal powder or is sufficiently mixed mixed material with carbon dust or mixed material is uniform with carbon dust
In its surface bedding carbon dust after mixing, adding carbon dust oxygen can be isolated in pyroreaction, and reaction product is prevented to be oxidized,
And it can further promote reduced iron powder and Fe2O3Reaction.
Embodiment 3
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the wood that mixture surface of material bedding 0.6675g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1100 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 4
The present embodiment provides the preparation process of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the wood that mixture surface of material bedding 1.3350g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1200 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 5
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the wood that mixture surface of material bedding 2.0025g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1300 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 6
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the charcoal that mixture surface of material bedding 2.67g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powder, and reaction system is heated to 1400 DEG C with the heating rate of 5 DEG C/min and keeps the temperature 30min,
Generate stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying to obtain contains
Stablize the slag ingredient of FeO.
Embodiment 7
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and it is 100~300 purposes that 0.6675g partial size is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by charcoal powder, and reaction system is heated to 1100 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 8
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and it is 100~300 purposes that 1.335g partial size is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by charcoal powder, and reaction system is heated to 1200 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 9
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and it is 100~300 purposes that 2.0025g partial size is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by charcoal powder, and reaction system is heated to 1300 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 10
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the wood that 2.67g partial size is 100~300 mesh is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1500 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 11
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the charcoal powder that 0.6675g partial size is 100~300 mesh is divided equally into two parts,
A part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system,
Reaction system is heated to 1200 DEG C with the heating rate of 5 DEG C/min and keeps the temperature 30min, generates stable FeOSiO2Product,
By the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
Embodiment 12
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the charcoal powder that 1.335g partial size is 100~300 mesh is divided equally into two parts, and one
Part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system, with
Reaction system is heated to 1300 DEG C and keeps the temperature 30min by the heating rate of 5 DEG C/min, generates stable FeOSiO2Product, with
By the FeOSiO after furnace is cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
Embodiment 13
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the charcoal powder that 2.0025g partial size is 100~300 mesh is divided equally into two parts,
A part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system,
Reaction system is heated to 1400 DEG C with the heating rate of 5 DEG C/min and keeps the temperature 30min, generates stable FeOSiO2Product,
By the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
Embodiment 14
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the charcoal powder that 2.67g partial size is 100~300 mesh is divided equally into two parts, and one
Part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system, with
Reaction system is heated to 1500 DEG C and keeps the temperature 30min by the heating rate of 5 DEG C/min, generates stable FeOSiO2Product, with
By the FeOSiO after furnace is cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
Embodiment 15
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the coke that mixture surface of material bedding 0.6675g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1200 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 16
The present embodiment provides the preparation process of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the coke that mixture surface of material bedding 1.3350g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1300 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 17
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the coke that mixture surface of material bedding 2.0025g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1400 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 18
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, in the coke that mixture surface of material bedding 2.67g partial size is 100~300 mesh
Reaction system is placed in resistance furnace by powder, and reaction system is heated to 1100 DEG C with the heating rate of 5 DEG C/min and keeps the temperature 30min,
Generate stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying to obtain contains
Stablize the slag ingredient of FeO.
Embodiment 19
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and it is 100~300 purposes that 0.6675g partial size is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by coke blacking, and reaction system is heated to 1200 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 20
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and it is 100~300 purposes that 1.335g partial size is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by coke blacking, and reaction system is heated to 1300 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 21
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and it is 100~300 purposes that 2.0025g partial size is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by coke blacking, and reaction system is heated to 1400 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 22
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the coke that 2.67g partial size is 100~300 mesh is uniformly mixed in mixture material
Reaction system is placed in resistance furnace by powdered carbon, and reaction system is heated to 1500 DEG C with the heating rate of 5 DEG C/min and is kept the temperature
30min generates stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying is
It obtains containing the slag ingredient for stablizing FeO.
Embodiment 23
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the coke blacking that 0.6675g partial size is 100~300 mesh is divided equally into two parts,
A part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system,
Reaction system is heated to 1200 DEG C with the heating rate of 5 DEG C/min and keeps the temperature 30min, generates stable FeOSiO2Product,
By the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
Embodiment 24
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the coke blacking that 1.335g partial size is 100~300 mesh is divided equally into two parts, and one
Part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system, with
Reaction system is heated to 1300 DEG C and keeps the temperature 30min by the heating rate of 5 DEG C/min, generates stable FeOSiO2Product, with
By the FeOSiO after furnace is cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
Embodiment 25
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the coke blacking that 2.0025g partial size is 100~300 mesh is divided equally into two parts,
A part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system,
Reaction system is heated to 1400 DEG C with the heating rate of 5 DEG C/min and keeps the temperature 30min, generates stable FeOSiO2Product,
By the FeOSiO after furnace cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
Embodiment 26
The present embodiment provides the preparation processes of FeO in metallurgical cinder a kind of:
By 3.1g reduced iron powder, 8.9gFe2O3And 4.98gSiO2Mixing, is fully ground with agate mortar and is mixed
Mixed material is fitted into corundum crucible by material, and the coke blacking that 2.67g partial size is 100~300 mesh is divided equally into two parts, and one
Part with uniformly mixed in mixture material, remaining part bedding is placed in resistance furnace on mixed material surface, by reaction system, with
Reaction system is heated to 1500 DEG C and keeps the temperature 30min by the heating rate of 5 DEG C/min, generates stable FeOSiO2Product, with
By the FeOSiO after furnace is cooling2Product is crushed to 200 mesh, and drying to obtain is containing the slag ingredient for stablizing FeO.
The slag that 100g contains 12wt%FeO, inspection are prepared respectively using slag ingredient prepared by embodiment 3- embodiment 26
The actual content for surveying FeO in gained slag, the FeO mass concentration difference for being computed actually to contain in slag are as shown in table 1:
Table 1
It can be seen from data in table 1 in obtained slag FeO reagent content be Theoretical Design value 70~
95%, meet the demand that FeO is prepared in metallurgical cinder, compared with prior art, the present invention have process it is short, it is easy to operate,
Advantage at low cost.
Data are shown in table 1, and carbon dust and the mixed mode difference of mixed material are also different to the preparation effect of FeO, by carbon
Oxygen can be isolated on mixed material surface for powder bedding, and reaction product is prevented to be oxidized, while can also promote reduced iron powder
With Fe2O3Reaction；Mixed material, which is sufficiently mixed with carbon dust, both to be made contact closer, is further improved carbon dust and is promoted
The effect of reaction；And by mixed material and carbon dust after evenly mixing the mode of its surface bedding carbon dust both promoted react into
Row also improves the effect of isolation oxygen, therefore the FeO content that first after mixing prepared by the mode of bedding is higher.
Claims (10)
1. the preparation process of FeO in a kind of metallurgical cinder, which is characterized in that by reduced iron powder, Fe2O3And SiO2By certain mole
Than obtaining mixed material after mixing and being fully ground mixing, mole of certain carbon dust and reduced iron powder is pressed in the mixed material
Reaction system is obtained than addition carbon dust, reaction system is heated to 1100~1500 DEG C with certain heating rate and keeps the temperature a timing
Between, generate stable FeOSiO2Product, by the FeOSiO after furnace cooling2Product is broken, and drying to obtain is containing stabilization
The slag ingredient of FeO.
2. according to claim 1 in a kind of metallurgical cinder FeO preparation process, which is characterized in that the addition of the carbon dust
Mode is in the mixed material surface bedding carbon dust.
3. according to claim 1 in a kind of metallurgical cinder FeO preparation process, which is characterized in that the addition of the carbon dust
Mode is uniformly to mix the mixed material with carbon dust.
4. according to claim 1 in a kind of metallurgical cinder FeO preparation process, which is characterized in that the addition of the carbon dust
Mode is by the mixed material and carbon dust after evenly mixing in its surface bedding carbon dust.
5. according to claim 1 in a kind of -4 any metallurgical cinders FeO preparation process, which is characterized in that the reduction
Iron powder, Fe2O3And SiO2Molar ratio be 1:1:1.5.
6. according to claim 5 in a kind of metallurgical cinder FeO preparation process, which is characterized in that the carbon dust and reduction
The molar ratio of iron powder is 1~4:1.
7. according to claim 6 in a kind of metallurgical cinder FeO preparation process, which is characterized in that the carbon dust be granularity
For the charcoal powder or coke blacking of 100~300 mesh.
8. according to claim 7 in a kind of metallurgical cinder FeO preparation process, which is characterized in that the heating rate be 5
DEG C/min, the soaking time is 30min.
9. according to claim 8 in a kind of metallurgical cinder FeO preparation process, which is characterized in that the heating temperature is
1100 DEG C, 1200 DEG C, 1300 DEG C, 1400 DEG C or 1500 DEG C.
10. according to claim 9 in a kind of metallurgical cinder FeO preparation process, which is characterized in that it is described containing stablizing FeO
Slag ingredient partial size be 100-300 mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910440651.5A CN110004261B (en) | 2019-05-24 | 2019-05-24 | Preparation process of FeO in metallurgical slag |
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