CN101713022A - Ore proportioning and sintering method - Google Patents
Ore proportioning and sintering method Download PDFInfo
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- CN101713022A CN101713022A CN200910253459A CN200910253459A CN101713022A CN 101713022 A CN101713022 A CN 101713022A CN 200910253459 A CN200910253459 A CN 200910253459A CN 200910253459 A CN200910253459 A CN 200910253459A CN 101713022 A CN101713022 A CN 101713022A
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- aluminum
- iron ore
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Abstract
The invention relates to an ore proportioning and sintering method used for sintering a mixing iron ore material comprising high-silicon low-aluminum iron ore powder and high-aluminum low-silicon iron ore powder, wherein the high-silicon low-aluminum iron ore powder comprises the following components in percentage by weight: 45-55 percent of TFe, 10-20 percent of SiO2 and less than 1.0 percent of Al2O3; the high-aluminum low-silicon iron ore powder comprises the following components in percentage by weight: 60-70 percent of TFe, less than 5 percent of SiO2 and 2.0-4.0 percent of Al2O3, and Al2O3/SiO2 is 0.1-0.35; in the mixing iron ore material, the proportion of the high-silicon low-aluminum iron ore powder and the high-aluminum low-silicon iron ore powder is larger than 0 and not larger than 50 percent, and the grade of the iron of a sintering ore is 50-60 percent, the SiO2 occupies 5.0-9.0 percent, and the alkalinity is 1.2-2.5 percent. The method can reduce the cost of steel, increase the utilization efficiency of the two kinds of ore powder, improve the metallurgical property of the sintering ores and improve the breathability of a material layer in the process of sintering.
Description
Technical field
The present invention relates to smelting iron technology, relate in particular to a kind of ore deposit and sintering method of joining.
Background technology
The development of economy and technology is to the demand sustainable growth of steel products, therefore the demand to iron ore is also increasing, cause the price of iron ore to rise steadily, make the production cost of each iron and steel manufacturer significantly promote, and iron ore is a kind of Nonrenewable resources, especially the high-grad iron ore deposit resource still less, so the usage ratio of other iron ore types in actual production agglomerate process progressively increase, for example high alumina iron ore stone and high silicon iron ore.But the high alumina sintering deposit exists metallurgical performance decline, slag viscosity rise, is unfavorable for desulfurizing iron and makes the unsettled shortcoming of conditions of blast furnace; High silicon agglomerate exists that metallurgical performance is poor, the quantity of slag is big, be unfavorable for the improvement of indirect reduction development and permeability of stock column in the blast furnace.
Summary of the invention
The object of the present invention is to provide a kind of ore deposit and sintering method of joining, it has improved high alumina low-silicon iron ore and the application percentage of the low ferro-aluminum ore of high silicon in agglomerate is produced, and has reduced the production cost of agglomerate, has enlarged utilization of resources scope.
Another object of the present invention is to provide a kind of ore deposit and sintering method of joining, it is at different blast furnaces, the application percentage of the low ferro-aluminum ore of control high alumina low-silicon iron ore and high silicon in agglomerate is produced makes the agglomerate product can satisfy the ironmaking demand of different size blast furnace.
In order to realize above-mentioned purpose of the present invention, the invention provides a kind of ore deposit and sintering method of joining, it is used for the mixing iron ore material that sintering comprises the low ferro-aluminum breeze of high silicon and high-aluminum low-silicon Iron Ore Powder, and in the low ferro-aluminum breeze of described high silicon, the weight of TFe is 45-55%, SiO
2Weight be 10-20%, Al
2O
3Weight less than 1.0%, all the other are impurity; In described high-aluminum low-silicon Iron Ore Powder, the weight of TFe is 60-70%, SiO
2Weight less than 5%, Al
2O
3Weight be 2.0-4.0%, all the other are impurity; And mix Al in the iron ore material at this
2O
3/ SiO
2Be 0.1-0.35, the ratio that the low ferro-aluminum breeze of described high silicon and high-aluminum low-silicon Iron Ore Powder account for described mixing iron ore material weight is greater than 0 and be less than or equal to 50% so that the weight of the iron of sintering deposit is 50-60%, SiO
2Weight be 5.0-9.0%, basicity is at 1.2-2.5.Agglomerate according to this mix proportion scheme production preferably is applicable to 1000m
3Following blast furnace.
According to above-mentioned ore deposit and the sintering method of joining, wherein, the ratio that low ferro-aluminum breeze of described high silicon and high alumina low-silicon iron breeze account for described mixing iron ore material weight is greater than 0 and be less than or equal to 40% and to make the weight of the iron of agglomerate be 53-60%, SiO
2Weight be 5.0-7.05%, basicity is at 1.6-2.5.Agglomerate according to this mix proportion scheme production preferably is applicable to 1000-2500m
3Blast furnace.
According to above-mentioned ore deposit and the sintering method of joining, wherein, the ratio that low ferro-aluminum breeze of described high silicon and high alumina low-silicon iron breeze account for described mixing iron ore material weight is greater than 0 and be less than or equal to 30% and to make the weight of the iron of agglomerate be 55-60%, SiO
2Weight be 5.0-6.5%, basicity is between 1.8-2.5.Agglomerate according to this mix proportion scheme production preferably is applicable to 2500-4000m
3Following blast furnace.
According to above-mentioned ore deposit and the sintering method of joining, wherein, the ratio that low ferro-aluminum breeze of described high silicon and high alumina low-silicon iron breeze account for described mixing iron ore material weight is greater than 0 and be less than or equal to 20% and to make the weight of the iron of agglomerate be 57-60%, SiO
2Weight be 4.0-6.0%, basicity is between 1.8-2.5.Agglomerate according to this mix proportion scheme production preferably is applicable to 4000m
3Above blast furnace.
The price of the low aluminium ore powder of high silicon and high-aluminum low-silicon breeze generally hangs down about 1/3rd than the Iron Ore Powder of equal grade, therefore the present invention can reduce the production cost of iron and steel, increase the utilization ratio of above-mentioned two types of breezes, produce sintering deposit according to each breeze ratio relation provided by the invention, can improve the metallurgical performance of sintering deposit, and in sintering process, improve bed permeability.Preferably technical scheme provides different iron material proportion relations for different blast furnaces, and realization purpose of the present invention that can be optimum better improves economic benefit and the environmental benefit of the low aluminium ore powder of high silicon and high-aluminum low-silicon breeze.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further detail.
In the low ferro-aluminum breeze of high silicon, each predominant quantity is 45-55% than the weight that is respectively TFe, SiO
2Weight be 10-20%, Al
2O
3Less than 1.0%, all the other are impurity; In the high-aluminum low-silicon Iron Ore Powder, each predominant quantity is 60-70% than the weight that is respectively TFe, SiO
2Less than 5%, Al
2O
3Weight be 2.0-4.0%, all the other are impurity.
For 1000m
3Following blast furnace the invention provides preferred embodiment one, and in the preferred embodiment, the TFe in the low aluminium ore powder of high silicon is 45%, SiO
2Be 20%, Al
2O
3Be 1.0%, the TFe in the high-aluminum low-silicon breeze is 60%, SiO
2Be 5%, Al
2O
3Be 4.0%, the two be 50% of total mixing iron ore material with addition of ratio, all the other then are other iron ore materials, such as fine ore etc., except mixing iron ore material, raw materials for sintering also comprises unclassified stores certainly, such as lime stone, coke blacking etc., and in the preferred embodiment Al
2O
3/ SiO
2Be 0.35, the iron grade of last sintering deposit is 50%, and basicity is 2.5, SiO
2Be 9%.For 1000m
3Following blast furnace, the present invention also provides preferred embodiment two, and in the preferred embodiment, the TFe in the low aluminium ore powder of high silicon is 55%, SiO
2Be 10%, Al
2O
3Be 0.1%, the TFe in the high-aluminum low-silicon breeze is 70%, SiO
2Be 1%, Al
2O
3Be 2%, the two be 10% of total mixing iron ore material with addition of ratio, Al in the preferred embodiment
2O
3/ SiO
2Be 0.1, the iron grade of last sintering deposit is 60%, and basicity is 1.2, SiO
2Be 5.0%.
At 1000m
3Following blast furnace, account for mix the iron ore material 50% for above-mentioned two class breezes with addition of the upper limit, if surpass 50% ratio, the metallurgical performance of last agglomerate product will descend.Certainly in other embodiments, should also can be reduced to 0 with addition of ratio, but also just can not embody advantage of the present invention in the case.
For 1000m
3-2500m
3Blast furnace, the invention provides preferred embodiment three and preferred embodiment four, in preferred embodiment three, the TFe in the low aluminium ore powder of high silicon is 45%, SiO
2Be 20%, Al
2O
3Be 1.0%, the TFe in the high-aluminum low-silicon breeze is 60%, SiO
2Be 5%, Al
2O
3Be 4.0%, the two be 40% of total mixing iron ore material with addition of ratio, all the other then are other iron ore materials, such as fine ore etc., except mixing iron ore material, raw materials for sintering also comprises unclassified stores certainly, such as lime stone, coke blacking etc., and in the preferred embodiment Al
2O
3/ SiO
2Be 0.30, the iron grade of last sintering deposit is 53%, and basicity is 2.3, SiO
2Be 7.05%.In the preferred embodiment four, the TFe in the low aluminium ore powder of high silicon is 55%, SiO
2Be 10%, Al
2O
3Be 0.1%, the TFe in the high-aluminum low-silicon breeze is 70%, SiO
2Be 1%, Al
2O
3Be 2%, the two be 15% of total mixing iron ore material with addition of ratio, Al in the preferred embodiment
2O
3/ SiO
2Be 0.1, the iron grade of last sintering deposit is 60%, and basicity is 1.6, SiO
2Be 5.0%.
For 2500m
3-4000m
3Blast furnace, the invention provides preferred embodiment five and preferred embodiment six, in preferred embodiment five, the TFe in the low aluminium ore powder of high silicon is 50%, SiO
2Be 15%, Al
2O
3Be 0.5%, the TFe in the high-aluminum low-silicon breeze is 60%, SiO
2Be 3%, Al
2O
3Be 3.0%, the two be 30% of total mixing iron ore material with addition of ratio, all the other then are other iron ore materials, such as fine ore etc., except mixing iron ore material, raw materials for sintering also comprises unclassified stores certainly, such as lime stone, coke blacking etc., and in the preferred embodiment Al
2O
3/ SiO
2Be 0.2, the iron grade of last sintering deposit is 55%, and basicity is 2.2, SiO
2Be 6.5%.In preferred embodiment six, the TFe in the low aluminium ore powder of high silicon is 55%, SiO
2Be 10%, Al
2O
3Be 0.05%, the TFe in the high-aluminum low-silicon breeze is 70%, SiO
2Be 2%, Al
2O
3Account for 4%, the two be 10% of total mixing iron ore material with addition of ratio, Al in the preferred embodiment
2O
3/ SiO
2Be 0.33, the iron grade of last sintering deposit is 60%, and basicity is 1.8, SiO
2Be 5.0%.
In order to adapt to the increasing trend of furnace volume, for 4000m
3The application of above blast furnace increases very fast, and the present invention provides preferred embodiment seven and eight to this, and in preferred embodiment seven, the TFe in the low aluminium ore powder of high silicon is 45%, SiO
2Be 10%, Al
2O
3Be 0.1%, the TFe in the high-aluminum low-silicon breeze is 60%, SiO
2Be 1%, Al
2O
3Be 2.0%, the two be 10% of total mixing iron ore material with addition of ratio, all the other then are other iron ore materials, such as fine ore etc., except mixing iron ore material, raw materials for sintering also comprises unclassified stores certainly, such as lime stone, coke blacking etc., and in the preferred embodiment Al
2O
3/ SiO
2Be 0.1, the iron grade of last sintering deposit is 57%, and basicity is 1.8, SiO
2Be 4.0%.In preferred embodiment eight, the TFe in the low aluminium ore powder of high silicon is 55%, SiO
2Be 20%, Al
2O
3Be 1.0%, the TFe in the high-aluminum low-silicon breeze is 70%, SiO
2Be 5%, Al
2O
3Be 4%, the two be 20% of total mixing iron ore material with addition of ratio, Al in the preferred embodiment
2O
3/ SiO
2Be 0.35, the iron grade of last sintering deposit is 60%, and basicity is 2.5, SiO
2Be 6.0%.
The purpose of joining the ore deposit be exactly for the chemical ingredients that makes agglomerate and material properties stable, satisfy the requirement of SINTERING PRODUCTION, what the agglomerate product performance that obtain met blast furnace goes into the stove requirement, therefore after the low silicon ore deposit of high alumina and the low aluminium ore of high silicon being cooperated according to a certain percentage, the intensity of agglomerate and reductibility have all had raising, and reflowing temperature will raise, the reflowing temperature interval also narrows down, reducing property improves under the hot conditions, and the cohesive zone position moves down in the blast furnace simultaneously, and the ventilation property of stock column also is improved.
Because the reserves of the low aluminum ore of high-aluminum low-silicon ore and high silicon are big, price is low, therefore application of the present invention can also reduce the production cost of iron and steel greatly, so that all kinds of resource can both take full advantage of.
Above preferred embodiment only is to illustrative of the present invention, is not in order to qualification the present invention, and protection scope of the present invention is when looking claim institute restricted portion.
Claims (4)
1. join ore deposit and sintering method for one kind, be used for the mixing iron ore material that sintering comprises the low ferro-aluminum breeze of high silicon and high-aluminum low-silicon Iron Ore Powder, in the low ferro-aluminum breeze of described high silicon, the weight of TFe is 45-55%, SiO
2Weight be 10-20%, Al
2O
3Weight less than 1.0%, all the other are impurity; In described high-aluminum low-silicon Iron Ore Powder, the weight of TFe is 60-70%, SiO
2Weight less than 5%, Al
2O
3Weight be 2.0-4.0%, all the other are impurity; And mix Al in the iron ore material at this
2O
3/ SiO
2Be 0.1-0.35, it is characterized in that the low ferro-aluminum breeze of described high silicon and high-aluminum low-silicon Iron Ore Powder account for described mixing iron ore material part by weight greater than 0 and be less than or equal to 50% and to make the weight of the iron of sintering deposit be 50-60%, SiO
2Weight be 5.0-9.0%, basicity is at 1.2-2.5.
2. ore deposit and the sintering method of joining according to claim 1, it is characterized in that, the ratio that low ferro-aluminum breeze of described high silicon and high alumina low-silicon iron breeze account for described mixing iron ore material weight is greater than 0 and be less than or equal to 40% and to make the weight of the iron of agglomerate be 53-60%, SiO
2Weight be 5.0-7.05%, basicity is at 1.6-2.5.
3. ore deposit and the sintering method of joining according to claim 1, it is characterized in that, the ratio that low ferro-aluminum breeze of described high silicon and high alumina low-silicon iron breeze account for described mixing iron ore material weight is greater than 0 and be less than or equal to 30% and to make the weight of the iron of agglomerate be 55-60%, SiO
2Weight be 5.0-6.5%, basicity is between 1.8-2.5.
4. ore deposit and the sintering method of joining according to claim 1, it is characterized in that, the ratio that low ferro-aluminum breeze of described high silicon and high alumina low-silicon iron breeze account for described mixing iron ore material weight is greater than 0 and be less than or equal to 20% and to make the weight of the iron of agglomerate be 57-60%, SiO
2Weight be 4.0-6.0%, basicity is between 1.8-2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910253459A CN101713022A (en) | 2009-12-16 | 2009-12-16 | Ore proportioning and sintering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910253459A CN101713022A (en) | 2009-12-16 | 2009-12-16 | Ore proportioning and sintering method |
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| Publication Number | Publication Date |
|---|---|
| CN101713022A true CN101713022A (en) | 2010-05-26 |
Family
ID=42417018
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|---|---|---|---|
| CN200910253459A Pending CN101713022A (en) | 2009-12-16 | 2009-12-16 | Ore proportioning and sintering method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023176A (en) * | 2010-12-13 | 2011-04-20 | 首钢总公司 | Method for acquiring high temperature characteristics of iron ore powder in sintering process |
| CN103157547A (en) * | 2013-03-08 | 2013-06-19 | 武汉工程大学 | Ore-matching method of selecting phosphorus ore to raw ore |
| CN103849701A (en) * | 2014-04-01 | 2014-06-11 | 方大特钢科技股份有限公司 | Process method for producing low-As molten iron by adopting blast furnace |
| CN104419823A (en) * | 2013-08-30 | 2015-03-18 | 北大方正集团有限公司 | Ingredient of iron-bearing material of agglomerate |
| CN104651602A (en) * | 2015-01-12 | 2015-05-27 | 内蒙古包钢钢联股份有限公司 | Method for preparing sinter ore by using high-silicon fine ore |
| CN109161680A (en) * | 2018-10-03 | 2019-01-08 | 张家港宏昌钢板有限公司 | The segregation ore matching sintering method of iron ore |
| CN112824547A (en) * | 2019-11-21 | 2021-05-21 | 上海梅山钢铁股份有限公司 | Method for producing sintered ore from high-alumina iron ore powder |
-
2009
- 2009-12-16 CN CN200910253459A patent/CN101713022A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102023176A (en) * | 2010-12-13 | 2011-04-20 | 首钢总公司 | Method for acquiring high temperature characteristics of iron ore powder in sintering process |
| CN102023176B (en) * | 2010-12-13 | 2012-11-21 | 首钢总公司 | Method for acquiring high temperature characteristics of iron ore powder in sintering process |
| CN103157547A (en) * | 2013-03-08 | 2013-06-19 | 武汉工程大学 | Ore-matching method of selecting phosphorus ore to raw ore |
| CN104419823A (en) * | 2013-08-30 | 2015-03-18 | 北大方正集团有限公司 | Ingredient of iron-bearing material of agglomerate |
| CN103849701A (en) * | 2014-04-01 | 2014-06-11 | 方大特钢科技股份有限公司 | Process method for producing low-As molten iron by adopting blast furnace |
| CN104651602A (en) * | 2015-01-12 | 2015-05-27 | 内蒙古包钢钢联股份有限公司 | Method for preparing sinter ore by using high-silicon fine ore |
| CN109161680A (en) * | 2018-10-03 | 2019-01-08 | 张家港宏昌钢板有限公司 | The segregation ore matching sintering method of iron ore |
| CN112824547A (en) * | 2019-11-21 | 2021-05-21 | 上海梅山钢铁股份有限公司 | Method for producing sintered ore from high-alumina iron ore powder |
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Open date: 20100526 |