CN108950193A - A kind of sinter and the sintering for metallurgy mix material and preparation method thereof - Google Patents
A kind of sinter and the sintering for metallurgy mix material and preparation method thereof Download PDFInfo
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- CN108950193A CN108950193A CN201810929659.3A CN201810929659A CN108950193A CN 108950193 A CN108950193 A CN 108950193A CN 201810929659 A CN201810929659 A CN 201810929659A CN 108950193 A CN108950193 A CN 108950193A
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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
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
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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
- C22B1/16—Sintering; Agglomerating
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Abstract
A kind of sinter and the sintering for metallurgy mix material and preparation method thereof, belong to metallurgical technology field.A kind of mix for metallurgical sintering expects to include sintered ore materials, fuel and solvent, and the mean particle size of sintering mixing material is greater than the partial size of sintered ore materials, the partial size of fuel.Part or all of coke powder in crude fuel is replaced using semi-coke, increase the mean particle size that sintering mixes material simultaneously, improve distribution of particles, it can be improved sintering and mix the thickness of feed layer for expecting manufactured sinter, in sintering, improved since the accumulation of heat of sinter bed acts on, solid burnup is lower when sintering, fuel consumption can be effectively reduced, therefore sulphur emissions effectively reduce.A kind of to be sintered the preparation method for mixing and expecting for metallurgy, using adhesive and solvent mixed sintering mineral aggregate and fuel, adhesive is capable of increasing sintering and mixes the mean particle size expected, improves the synthesized attribute for being sintered and mixing and expecting manufactured sinter.Furthermore the invention further relates to a kind of sinters.
Description
Technical field
The present invention relates to a kind of metallurgical technology fields, and in particular to a kind of sinter and the sintering for metallurgy mix material
And preparation method thereof.
Background technique
Since pellet production cost is higher, lump ore metallurgical performance is poor, and Iron and Steel Enterprises in China mainly passes through increase sintering
The method of mining amount reduces ironmaking cost.
Sinter is to be incorporated suitable fuel and flux, suitable water is added various powdery iron-containing raw materials, through mixing and
Make material that a series of physical chemical change occur after pelletizing on agglomerating plant, mineral powder granular is sticked into caked process.
But a large amount of smoke pollutions can be generated in sintering process, the oxide of sulfureous in flue gas is one of major pollutants, with
The variation of environmental protection policy, the environmental protection pressure of sintering process can be increasing, and the sulphur emissions for reducing sintering flue gas are imperative.
Summary of the invention
The first object of the present invention is that providing a kind of mix for metallurgical sintering expects, this sintering, which mixes, expects that particle is average
Partial size obviously becomes larger, and sulfur content is substantially reduced.
The second object of the present invention is to provide a kind of preparation method for mixing material for the sintering of metallurgy, can prepare
The more good sintering of particle diameter distribution mixes material.
The third object of the present invention is to provide sinter, and wherein sulfur content is substantially reduced.
The present invention solves its technical problem and adopts the following technical solutions to realize.
The present invention proposes that a kind of sintering for metallurgy mixes material comprising sintered ore materials, fuel and solvent, fuel are main
Including semi-coke, solvent includes water, and sintering mixes the aggregation expected for particle, and is sintered the mean particle size for mixing material greater than burning
Tie the partial size of mineral aggregate, the partial size of fuel.
The present invention proposes a kind of preparation method that material is mixed for the sintering of metallurgy comprising sintered ore materials and fuel exist
Add adhesive and solvent mixing under pulverulence.
The present invention proposes a kind of sinter, mixes material sintering preparation by the above-mentioned sintering for metallurgy.
The beneficial effect of the embodiment of the present invention is:
A kind of sintering for metallurgy provided by the invention mixes material, is replaced using semi-coke partly or entirely burnt in crude fuel
Powder can effectively reduce the compound of the sulphur discharged when sintering since the content of sulphur in semi-coke is lower than the content of sulphur in coke powder
Discharge.Increase the mean particle size that sintering mixes material simultaneously, improve distribution of particles, is conducive to improve the ventilative of sinter bed
Property, it can be improved sintering and mix the thickness of feed layer for expecting manufactured sinter.Further, in sintering, due to the storage of sinter bed
Heat effect improves, and solid burnup is lower when sintering, and fuel consumption can be effectively reduced, therefore sulphur emissions effectively reduce.
A kind of preparation method mixing material for the sintering of metallurgy provided by the invention, is burnt using adhesive and solvent mixing
Mineral aggregate and fuel are tied, adhesive is capable of increasing the mean particle size that sintering mixes material, improves sintering and mixes sintering made of material
The synthesized attribute of mine.
A kind of sinter provided by the invention mixes material sintering by the above-mentioned sintering for metallurgy and is prepared.
Specific embodiment
It in order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below will be in the embodiment of the present invention
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, according to normal conditions or manufacturer builds
The condition of view carries out.Reagents or instruments used without specified manufacturer is the conventional production that can be obtained by commercially available purchase
Product.
A kind of sinter of the embodiment of the present invention and sintering mixing material for metallurgy and preparation method thereof are carried out below
It illustrates.
The present invention provides a kind of sintering mixing material for metallurgy comprising sintered ore materials, fuel and solvent, fuel are main
Including semi-coke, solvent includes water, and sintering mixes the aggregation expected for particle, and is sintered the mean particle size for mixing material greater than burning
Tie the partial size of mineral aggregate, the partial size of fuel.
It is mixed in material in the sintering for being conventionally used to metallurgy, the main component of fuel is coke powder, the practical semi-coke part of the present invention
Or all instead of coke powder part, the main component of semi-coke and coke powder is as shown in table 1:
The main component of table 1 semi-coke and coke powder
| Ingredient | Fixed C (%) | S (%) | Ash content (%) |
| Coke powder | 80 | 0.55 | 13.16 |
| Semi-coke | 79.66 | 0.4 | 13.21 |
As shown in Table 1, the fixation C content of coke powder and semi-coke is not much different, and can meet the needs of fuel, while in semi-coke
Content of the content of sulphur obviously than sulphur in coke powder is low, partly or entirely replaces coke powder using semi-coke, can not only meet as burning
Knot mixes the effect of the fuel of material, while being effectively reduced the compound emission of the sulphur discharged when sintering.
Further, sintering mixes weight fraction of the grain diameter greater than 3mm in material greater than 70%.Increase sintering to mix
The mean particle size of material improves distribution of particles, is conducive to the gas permeability for improving sinter bed, can be improved sintering and mixes material system
At sinter thickness of feed layer.Further, it in sintering, is improved since the accumulation of heat of sinter bed acts on, solid fires when sintering
Consume lower, fuel consumption can be effectively reduced, therefore sulphur emissions effectively reduce.
Sintering mixes material and includes powder, 1~5 part of gas in 60~70 parts of Baima concentrate, 5~10 parts of level land concentrate, 4~8 parts
Ash, 5~10 parts of lime stones, 3~6 parts of active carbons, 0~2 part of coke powder and 3~5 parts of semi-cokes.
The present invention also provides a kind of preparation methods that material is mixed for the sintering of metallurgy comprising by sintered ore materials and fuel
Add adhesive and solvent mixing under pulverulence.It can using adhesive and solvent mixed sintering mineral aggregate and fuel, adhesive
Increase sintering and mix the mean particle size expected, improves sintering and mix the synthesized attribute for expecting manufactured sinter.
It is powdered firstly the need of semi-coke to be processed into, so that its grain diameter is less than 0.5mm；Then by powdered sinter
Material and fuel first mix 3~6min, are uniformly mixed and obtain sintered material mixture；Sintered material mixture one is added to again to mix
In, add adhesive and solvent to mix 3~6min；Finally two will be added in the dark sintered material mixture closed to mix,
Add adhesive and solvent to mix 3~6min, that is, sintering is prepared and mixes material.
It is strong mixed that sintered ore materials and fuel can be made to be uniformly mixed, one it is mixed be mainly used for making mother bulb and be uniformly mixed, two mixed masters
It is used for pelletizing.
In embodiments of the present invention, adhesive uses water, by weight ratio, and the additive amount of water is 7~7.8%, preferably
7.2~7.4%, a mixing two, which is mixed, respectively adds half water.
The present invention also provides a kind of sinters, mix material sintering preparation by the above-mentioned sintering for metallurgy.
Preparing sinter includes that sintering will be prepared and mix to expect to be put into sintered cup to be sintered.
The thickness of feed layer of sinter is 900~1000mm, and the mass fraction of sinter sulphur is 0.02~0.027%.
Feature and performance of the invention are described in further detail with reference to embodiments.
Embodiment 1
The embodiment of the present invention provides a kind of sinter and the sintering for metallurgy mixes material and preparation method thereof.
1, preparation sintering mixes material
(1) it crushes: taking 5 parts of semi-cokes to be put into ball mill and be ground into powder, the grain diameter of semi-coke is made to be less than 0.5mm；
(2) it mixes: taking 67 parts of Baima concentrate, 7 parts of level land concentrate, powder, 3 parts of gas ash, 7 parts of lime stones, 4.5 parts in 6 parts
Active carbon and 5 parts of smashed semi-cokes are added in mixed machine by force and mix 5min, obtain sintered material mixture；
Then by uniformly mixed sintered material mixture be added to one it is mixed in, 3.65% water is added, mixes 5min；
Again by a dark sintered material mixture closed be added to two it is mixed in, 3.65% water, mixing 5min is added.I.e.
Sintering is prepared and mixes material.
2, sinter is prepared
The sintering of preparation is mixed material to be layered on sintered cup, sintering obtains sinter.
Embodiment 2
The embodiment of the present invention provides a kind of sinter and the sintering for metallurgy mixes material and preparation method thereof.
1, preparation sintering mixes material
(1) it crushes: taking 5 parts of semi-cokes to be put into ball mill and be ground into powder, the grain diameter of semi-coke is made to be less than 0.5mm；
(2) it mixes: taking 60 parts of Baima concentrate, 5 parts of level land concentrate, powder, 1 part of gas ash, 5 parts of lime stones, 3 parts of work in 4 parts
Property charcoal and 5 parts of smashed semi-cokes be added in mixed machines by force and mix 4min, obtain sintered material mixture；
Then by uniformly mixed sintered material mixture be added to one it is mixed in, 3.5% water is added, mixes 4min；
Again by a dark sintered material mixture closed be added to two it is mixed in, 3.5% water, mixing 4min is added.I.e.
Sintering is prepared and mixes material.
2, sinter is prepared
The sintering of preparation is mixed material to be layered on sintered cup, sintering obtains sinter.
Embodiment 3
The embodiment of the present invention provides a kind of sinter and the sintering for metallurgy mixes material and preparation method thereof.
1, preparation sintering mixes material
(1) it crushes: taking 5 parts of semi-cokes to be put into ball mill and be ground into powder, the grain diameter of semi-coke is made to be less than 0.5mm；
(2) it mixes: taking 70 parts of Baima concentrate, 10 parts of level land concentrate, powder, 5 parts of gas ash, 10 parts of lime stones, 6 parts in 8 parts
Active carbon and 5 parts of smashed semi-cokes are added in mixed machine by force and mix 3min, obtain sintered material mixture；
Then by uniformly mixed sintered material mixture be added to one it is mixed in, 3.9% water is added, mixes 3min；
Again by a dark sintered material mixture closed be added to two it is mixed in, 3.9% water, mixing 3min is added.I.e.
Sintering is prepared and mixes material.
2, sinter is prepared
The sintering of preparation is mixed material to be layered on sintered cup, sintering obtains sinter.
Embodiment 4
The embodiment of the present invention provides a kind of sinter and the sintering for metallurgy mixes material and preparation method thereof.
1, preparation sintering mixes material
(1) it crushes: taking 3 parts of semi-cokes to be put into ball mill and be ground into powder, the grain diameter of semi-coke is made to be less than 0.5mm；
(2) it mixes: taking 65 Baima concentrate of part, 8 parts of level land concentrate, powder, 2 parts of gas ash, 7 parts of lime stones, 5 parts of work in 6 parts
Property charcoal, 2 parts of coke powders and 3 parts of smashed semi-cokes be added in mixed machines by force and mix 6min, obtain sintered material mixture；
Then by uniformly mixed sintered material mixture be added to one it is mixed in, 3.6% water is added, mixes 6min；
Again by a dark sintered material mixture closed be added to two it is mixed in, 3.6% water, mixing 6min is added.I.e.
Sintering is prepared and mixes material.
2, sinter is prepared
The sintering of preparation is mixed material to be layered on sintered cup, sintering obtains sinter.
Embodiment 5
The embodiment of the present invention provides a kind of sinter and the sintering for metallurgy mixes material and preparation method thereof.
1, preparation sintering mixes material
(1) it crushes: taking 4 parts of semi-cokes to be put into ball mill and be ground into powder, the grain diameter of semi-coke is made to be less than 0.5mm；
(2) it mixes: taking 63 parts of Baima concentrate, 6 parts of level land concentrate, powder, 4 parts of gas ash, 9 parts of lime stones, 4 parts of work in 5 parts
Property charcoal, 1 part and 4 parts of smashed semi-cokes be added in mixed machines by force and mix 4min, obtain sintered material mixture；
Then by uniformly mixed sintered material mixture be added to one it is mixed in, 3.7% water is added, mixes 4min；
Again by a dark sintered material mixture closed be added to two it is mixed in, 3.7% water, mixing 4min is added.I.e.
Sintering is prepared and mixes material.
2, sinter is prepared
The sintering of preparation is mixed material to be layered on sintered cup, sintering obtains sinter.
Comparative example 1
The embodiment of the present invention provides a kind of sinter and the sintering for metallurgy mixes material and preparation method thereof.
1, preparation sintering mixes material
(1) it mixes: taking 67 parts of Baima concentrate, 7 parts of level land concentrate, powder, 3 parts of gas ash, 7 parts of lime stones, 4.5 parts in 6 parts
Active carbon and 5 parts of coke powders are added in mixed machine by force and mix 5min, obtain sintered material mixture；
Then by uniformly mixed sintered material mixture be added to one it is mixed in, 3.6% water is added, mixes 5min；
Again by a dark sintered material mixture closed be added to two it is mixed in, 3.6% water, mixing 5min is added.I.e.
Sintering is prepared and mixes material.
2, sinter is prepared
The sintering of preparation is mixed material to be layered on sintered cup, sintering obtains sinter.
Comparative example 2
The embodiment of the present invention provides a kind of sinter and the sintering for metallurgy mixes material and preparation method thereof.
1, preparation sintering mixes material
(1) it crushes: taking 5 parts of semi-cokes to be put into ball mill and be ground into powder, the grain diameter of semi-coke is made to be less than 0.5mm；
(2) it mixes: taking 67 parts of Baima concentrate, 7 parts of level land concentrate, powder, 3 parts of gas ash, 7 parts of lime stones, 4.5 parts in 6 parts
Active carbon and 5 parts of smashed semi-cokes mix 5min, that is, sintered material mixture is prepared.
2, sinter is prepared
The sintered material mixture of preparation is layered on sintered cup, sintering obtains sinter.
Example 1~5 and the sinter of comparative example 1 survey wherein sulfur content respectively, as shown in table 2:
The sintering of 2 Examples 1 to 5 of table and comparative example 1 mixes material sulfur content
Sulfur emissions in 1 sintering flue gas of Examples 1 to 5 and comparative example is measured respectively simultaneously, as shown in table 3:
Sulfur emissions in 3 Examples 1 to 5 of table and comparative example 1,2 sintering flue gases
It is mixed material it is found that partly or entirely replacing coke powder that can effectively reduce sintering using semi-coke by table 2 and table 3 and burnt
The sulfur content in mine is tied, and the compound emission of the sulphur discharged when sintering can be effectively reduced, it is complete when being replaced using semi-coke
When portion's coke powder, the compound emission amount that sintering mixes the sulphur discharged when the sulfur content and sintering in material and sinter is minimum.
The sintering of Example 1~5 and comparative example 2 mixes material respectively, measures grain diameter in sintering mixing material and is greater than 3mm
Weight fraction, as shown in table 4:
4 Examples 1 to 5 of table and the sintering of comparative example 2 mix the weight fraction that grain diameter in material is greater than 3mm
The thickness of feed layer of 2 sinter of Examples 1 to 5 and comparative example is as shown in table 5:
The thickness of feed layer of 5 sinter of table
By table 3, table 4 and table 5 it is found that being capable of increasing the mean particle size that sintering mixes material using strong mixed machine, increases and burn
Knot mixes the mean particle size of material, improves distribution of particles, is conducive to the gas permeability for improving sinter bed, it is mixed to can be improved sintering
The thickness of feed layer of sinter made of refining.Further, it in sintering, is improved since the accumulation of heat of sinter bed acts on, when sintering
Solid burnup is lower, and fuel consumption can be effectively reduced, therefore sulphur emissions effectively reduce.
In conclusion a kind of sintering for metallurgy provided in an embodiment of the present invention mixes material, former combustion is replaced using semi-coke
Part or all of coke powder in material is released when effectively reducing sintering since the content of sulphur in semi-coke is lower than the content of sulphur in coke powder
The compound emission for the sulphur put.Increase the mean particle size that sintering mixes material simultaneously, improves distribution of particles, sintering is made to mix material
Weight fraction of the grain diameter greater than 3mm be greater than 70%, be conducive to the gas permeability for improving sinter bed, it is mixed to can be improved sintering
The thickness of feed layer of sinter made of refining.Further, it in sintering, is improved since the accumulation of heat of sinter bed acts on, when sintering
Solid burnup is lower, and fuel consumption can be effectively reduced, therefore sulphur emissions effectively reduce.
A kind of preparation method mixing material for the sintering of metallurgy provided by the invention, is burnt using adhesive and solvent mixing
Mineral aggregate and fuel are tied, adhesive is capable of increasing the mean particle size that sintering mixes material, and the bulkiness that improvement sintering mixes material makes
Wherein fuel can burn sufficiently, and fuel consumption is effectively reduced.
A kind of sinter provided by the invention mixes material sintering by the above-mentioned sintering for metallurgy and is prepared.Sinter
Sulfur content therein is substantially reduced, and its thickness of feed layer thickens.
Embodiments described above is a part of the embodiment of the present invention, instead of all the embodiments.Reality of the invention
The detailed description for applying example is not intended to limit the range of claimed invention, but is merely representative of selected implementation of the invention
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
1. a kind of sintering for metallurgy mixes material, which is characterized in that the sintering mixes material and includes sintered ore materials, fuel and molten
Agent, the fuel mainly include semi-coke, and the solvent includes water, and the sintering mixes the aggregation that material is particle, and the burning
The mean particle size that knot mixes material is greater than the partial size of the partial size of the sintered ore materials, the fuel.
2. the sintering according to claim 1 for metallurgy mixes material, which is characterized in that the sintering mixes in material
Weight fraction of the grain partial size greater than 3mm is greater than 70%.
3. the sintering according to claim 1 for metallurgy mixes material, which is characterized in that it includes white that the sintering, which mixes material,
Horse concentrate, level land concentrate, middle powder, gas ash, lime stone, active carbon, coke powder and semi-coke.
4. the sintering according to claim 3 for metallurgy mixes material, which is characterized in that according to parts by weight, the burning
Knot mixes material and includes powder, 1~5 part of gas ash, 5~10 parts in 60~70 parts of Baima concentrate, 5~10 parts of level land concentrate, 4~8 parts
Lime stone, 3~6 parts of active carbons, 0~2 part of coke powder and 3~5 parts of semi-cokes.
5. a kind of production such as described in any item preparation methods for mixing material for the sintering of metallurgy of Claims 1 to 4, feature
It is, it includes by the sintered ore materials and the fuel in pulverulence that the sintering for metallurgy, which mixes the preparation method of material,
Down plus adhesive and the solvent mixing.
6. the preparation method according to claim 5 for mixing material for the sintering of metallurgy, which is characterized in that described adhesive
For water, by weight ratio, the additive amount of water is 7~7.8%, preferably 7.2~7.4%.
7. the preparation method according to claim 5 for mixing material for the sintering of metallurgy, which is characterized in that the semi-coke
Grain diameter is less than 0.5mm.
8. a kind of sinter, which is characterized in that mix material by the described in any item sintering for metallurgy of such as Claims 1 to 4
Sintering preparation.
9. sinter according to claim 8, which is characterized in that the thickness of feed layer of the sinter is 900~1000mm.
10. sinter according to claim 8, which is characterized in that in the sinter mass fraction of sulphur be 0.02~
0.027%.
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Application publication date: 20181207 |