CN110283991A - A kind of production method of acid sinter ore - Google Patents
A kind of production method of acid sinter ore Download PDFInfo
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- CN110283991A CN110283991A CN201910658010.7A CN201910658010A CN110283991A CN 110283991 A CN110283991 A CN 110283991A CN 201910658010 A CN201910658010 A CN 201910658010A CN 110283991 A CN110283991 A CN 110283991A
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- ore
- sintering
- acid sinter
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- sinter ore
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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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- Geochemistry & Mineralogy (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of production methods of acid sinter ore, the production method of the acid sinter ore is to utilize sintering machine, be prepared, specifically include through ore matching, sintering and post-processing step: using Alloying Ingredient Model before iron, obtaining proportion ore matching according to source situation, to obtain blending ore a spare；Mixture b is obtained by 78 ~ 82 parts of blending ore a of mass weight part, 7 ~ 12 parts of magnesium powder or magnesia, 5 ~ 6.5 parts of fuel and 0.025 ~ 0.03 part of composite bentonite mixing granulation containing identical mass fraction, mixture b is obtained into object acid sinter ore through sintering；CaCl is sprayed on object acid sinter ore surface2Solution.The present invention is by being satisfied the high-quality acid sinter ore of blast fumance with addition of measures such as high-quality flux containing magnesium, composite synergist, pre- heat mixtures.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a kind of production method of acid sinter ore.
Background technique
In blast furnace production process, to meet blast fumance demand, enters furnace ore and use alkaline sinter and acid sintering
Mine is arranged in pairs or groups into furnace, currently, producing alkaline sinter usually using sintering machine in the industry, uses even comb machine or shaft furnace production acidity mine
In (pellet), sintering machine production capacity and the matched situation of blast furnace production capacity, alkaline sinter is produced using sintering machine and is used for blast furnace,
If sintering machine production capacity has more than needed, iron ore resource meets using under conditions of sintering production technique, using sintering machine production acid
Sinter is used for blast furnace, can make full use of sintering production capacity, reduces enterprise's production cost.
Summary of the invention
The purpose of the present invention is to provide a kind of production methods of acid sinter ore.
The object of the present invention is achieved like this, and the production method of the acid sinter ore is using sintering machine, through matching
Mine, sintering and post-processing step are prepared, and specifically include:
A, ore matching: using Alloying Ingredient Model before iron, obtaining proportion ore matching according to source situation, to obtain blending ore a spare；
B, be sintered: by 78 ~ 82 parts of blending ore a of mass weight part, 7 ~ 12 parts of magnesium powder or magnesia containing identical mass fraction, 5 ~
6.5 parts of fuel and 0.025 ~ 0.03 part of composite bentonite mixing granulation obtain mixture b, and mixture b is obtained through sintering
Object acid sinter ore；
C, it post-processes: spraying CaCl on object acid sinter ore surface2Solution.
It is as follows that the present invention solves technical solution, operation principle and process that technical problem uses:
One, mixture structure:
Grade is allotted using sintered material model, harmful element meets the blending ore of blast fumance demand
| Ore | Shale limonite | High-quality magnet essence | Steel-smelting sewage sludge | Oxidizing slag | Magnetic separation iron powder | It is total |
| Proportion | 75 | 18 | 2 | 3 | 2 | 100 |
Two, blending ore makes heap:
Iron ore is purchased into after factory, according to the proportion tissue blending proportion for adding sintered material calculation using models, for guarantee Ti, Pb,
The mixing of the elements such as Zn, K, Na, Cu, Sn, mixing make heap process using four premixs, and premix heap operation total matter participates in, and makes heap
Flow control makes 200 layers/heap of the heap number of plies in 600t/h.
Three, process parameter control:
Sintered material workshop by mass percentage 78~82% blending ore, 7~12% magnesium powder (or identical magnesium mass fraction
Magnesia), 5~6.5% fuel and 0.025~0.03% composite bentonite, be sent into mixing and blending machine and stir granulation, mixed
Close material；Mixture temperature is preheated to 50 DEG C or more by logical steam.
After mixture enters sintering machine by belt-conveying, sintering material layer thickness is controlled by 700mm, and sintering machine machine speed is pressed
0.90~1.20m/min control.Sintering ignition temperature presses 1150 ± 50OC control, suction pressure are controlled by 15~17KPa, are obtained
Acid sinter ore.
Purchasing the concentration into factory is the CaCl that 35~40%, PH is 3~72Solution, by being diluted with water, obtaining concentration is 2
~3%, the CaCl that pH value is 4~72Dilution, by the fountain height of 0.5~0.7kg/t in CaCl2In sinter finished belt
It is sprayed at agglomerate surface evenly.
3. invention effect
By using this method, the high magnesium acid sinter ore of following quality index can be obtained.
The present invention is by being satisfied blast furnace with addition of measures such as high-quality flux containing magnesium, composite synergist, pre- heat mixtures
The high-quality acid sinter ore of production.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated, but the present invention is limited in any way,
Based on present invention teach that it is made it is any transform or replace, all belong to the scope of protection of the present invention.
The production method of acid sinter ore of the present invention is using sintering machine, through ore matching, sintering and post-processing step
It is prepared, specifically includes:
A, ore matching: using Alloying Ingredient Model before iron, obtaining proportion ore matching according to source situation, to obtain blending ore a spare；
B, be sintered: by 78 ~ 82 parts of blending ore a of mass weight part, 7 ~ 12 parts of magnesium powder or magnesia containing identical mass fraction, 5 ~
6.5 parts of fuel and 0.025 ~ 0.03 part of composite bentonite mixing granulation obtain mixture b, and mixture b is obtained through sintering
Object acid sinter ore；
C, it post-processes: spraying CaCl on object acid sinter ore surface2Solution.
The sintering is that control sintering material layer thickness is 600 ~ 800mm, and sintering machine speed is 0.50 ~ 1.50m/min, is burnt
Knot machine firing temperature is 1000 ~ 1300 DEG C, and suction pressure is 10 ~ 20KPa.
The sintering is that control sintering material layer thickness is 700mm, and sintering machine speed is 0.90 ~ 1.20m/min, sintering machine
Firing temperature is 1100 ~ 1200 DEG C, and suction pressure is 15 ~ 17KPa.
The CaCl2The mass percentage concentration of solution is 2 ~ 3%.
The CaCl2The pH value of solution is 4 ~ 7.
Case is embodied, the present invention will be further described below:
Embodiment 1
1, blending ore ore matching
Using Alloying Ingredient Model before iron, following proportion ore matching is obtained according to source situation:
| Ore | Shale limonite | High-quality magnet essence | Steel-smelting sewage sludge | Oxidizing slag | Magnetic separation iron powder | It is total |
| Proportion | 75 | 18 | 2 | 3 | 2 | 100 |
2, Iron Ore Matching in Sintering
Sintered material workshop by mass percentage 78~82% blending ore, 7~12% magnesium powder (or identical magnesium mass fraction
Magnesia), 5~6.5% fuel and 0.025~0.03% compound boron-moisten soil, be sent into mixing and blending machine and stir granulation, mixed
Close material；Mixture temperature is preheated to 50 DEG C or more by logical steam.
3, sintering parameter controls
After mixture enters sintering machine by belt-conveying, sintering material layer thickness is controlled by 700mm, and sintering machine machine speed presses 0.90
~1.20m/min control.Sintering ignition temperature presses 1150 ± 50OC control, suction pressure are controlled by 15~17KPa, obtain acidity
Sinter.
4、CaCl2The sprinkling of solution
Purchasing the concentration into factory is the CaCl that 35~40%, PH is 3~72Solution, by being diluted with water, obtaining concentration is 2~3%,
The CaCl that pH value is 4~72Dilution, by the fountain height of 0.5~0.7kg/t in CaCl2In sinter finished belt equably
It is sprayed at agglomerate surface.
Claims (5)
1. a kind of production method of acid sinter ore, it is characterised in that the production method of the acid sinter ore is to utilize sintering
Machine is prepared through ore matching, sintering and post-processing step, specifically includes:
A, ore matching: using Alloying Ingredient Model before iron, obtaining proportion ore matching according to source situation, to obtain blending ore a spare；
B, be sintered: by 78 ~ 82 parts of blending ore a of mass weight part, 7 ~ 12 parts of magnesium powder or magnesia containing identical mass fraction, 5 ~
6.5 parts of fuel and 0.025 ~ 0.03 part of composite bentonite mixing granulation obtain mixture b, and mixture b is obtained through sintering
Object acid sinter ore；
C, it post-processes: spraying CaCl on object acid sinter ore surface2Solution.
2. the production method of acid sinter ore according to claim 1, it is characterised in that the sintering is control sintering
Thickness of feed layer is 600 ~ 800mm, and sintering machine speed is 0.50 ~ 1.50m/min, and ignition of sintering process temperature is 1000 ~ 1300 DEG C, is taken out
Wind negative pressure is 10 ~ 20KPa.
3. the production method of acid sinter ore according to claim 1 or 2, it is characterised in that the sintering is that control is burnt
Knot thickness of feed layer is 700mm, and sintering machine speed is 0.90 ~ 1.20m/min, and ignition of sintering process temperature is 1100 ~ 1200 DEG C, exhausting
Negative pressure is 15 ~ 17KPa.
4. the production method of acid sinter ore according to claim 1, it is characterised in that the CaCl2The quality of solution
Percentage concentration is 2 ~ 3%.
5. the production method of acid sinter ore according to claim 1, it is characterised in that the CaCl2The pH value of solution
It is 4 ~ 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658010.7A CN110283991A (en) | 2019-07-20 | 2019-07-20 | A kind of production method of acid sinter ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910658010.7A CN110283991A (en) | 2019-07-20 | 2019-07-20 | A kind of production method of acid sinter ore |
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| Publication Number | Publication Date |
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| CN110283991A true CN110283991A (en) | 2019-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910658010.7A Pending CN110283991A (en) | 2019-07-20 | 2019-07-20 | A kind of production method of acid sinter ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832339A (en) * | 2021-09-29 | 2021-12-24 | 包头钢铁（集团）有限责任公司 | Flux for sintering |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011136556A2 (en) * | 2010-04-27 | 2011-11-03 | Oh Mi Hye | Additive composition for metal sintering |
| CN104263913A (en) * | 2014-09-27 | 2015-01-07 | 武钢集团昆明钢铁股份有限公司 | Preparation method for acidic hemispherical sinters |
| CN108950189A (en) * | 2018-07-13 | 2018-12-07 | 武汉科技大学 | A method of sinter containing MgO is produced using waste magnesia carbon bricks |
-
2019
- 2019-07-20 CN CN201910658010.7A patent/CN110283991A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011136556A2 (en) * | 2010-04-27 | 2011-11-03 | Oh Mi Hye | Additive composition for metal sintering |
| CN104263913A (en) * | 2014-09-27 | 2015-01-07 | 武钢集团昆明钢铁股份有限公司 | Preparation method for acidic hemispherical sinters |
| CN108950189A (en) * | 2018-07-13 | 2018-12-07 | 武汉科技大学 | A method of sinter containing MgO is produced using waste magnesia carbon bricks |
Non-Patent Citations (3)
| Title |
|---|
| 习乃文等主编: "《烧结技术》", 31 May 1993, 云南人民出版社 * |
| 朱苗勇主编: "《现代冶金工艺学 钢铁冶金卷》", 31 December 2016, 冶金工业出版社 * |
| 潘鹤等: "济钢酸性烧结矿生产实践", 《烧结球团》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113832339A (en) * | 2021-09-29 | 2021-12-24 | 包头钢铁（集团）有限责任公司 | Flux for sintering |
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Application publication date: 20190927 |
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