CN104988258B - Mixed sintering ore - Google Patents
Mixed sintering ore Download PDFInfo
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- CN104988258B CN104988258B CN201510410849.0A CN201510410849A CN104988258B CN 104988258 B CN104988258 B CN 104988258B CN 201510410849 A CN201510410849 A CN 201510410849A CN 104988258 B CN104988258 B CN 104988258B
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Abstract
The invention discloses mixed sintering ore. The mixed sintering ore is prepared by mixing the following materials: acid sintering ore with the alkalinity being 0.6 to 0.8 and alkaline sintering ore with the alkalinity being 1.8 to 2.3 according to the weight ratio of being 1:3 to 5. The mixed sintering ore is prepared by mixing the following materials: acid sintering ore with the alkalinity being 0.6 to 0.8 and alkaline sintering ore with the alkalinity being 1.8 to 2.3 according to the weight ratio of being 1:3 to 5, wherein the acid sintering ore accounts for 1 part, and the alkaline sintering ore accounts for 3 to 5 parts, due to the mixed matching, the condition that the acid sintering ore with the alkalinity being 0.6 to 0.8 can not be independently used for blast-furnace production is overcome; the average alkalinity of the mixed sintering ore is about 1.62 by measurement, and the use ratio of the sintering ore in a blast furnace can reach 88 percent to 90 percent of the use amount of iron-making materials in the blast furnace, so that the productivity of a sintering machine can be fully exerted; after the use ratio of the sintering ore is greatly increased, more benefit is brought for smooth conduction of the furnace condition, reduction of fuel consumption, improvement of technical indexes of the blast furnace and reduction of molten iron.
Description
Technical field
The present invention relates to blast furnace ironmaking field is and in particular to mixed sintering ore deposit.
Background technology
Sintering deposit is a kind of blast furnace ironmaking raw material, and the basicity of sintering deposit is weight and the acid of sintering deposit neutral and alkali material
The ratio of the weight of matter, when basicity is more than 1, sintering deposit is alkaline sintering deposit, and when basicity is less than 1, sintering deposit is acid burning
Knot ore deposit it is adaptable to the sintering deposit of blast furnace ironmaking basicity be usually 1.8～2.3, use in blast furnace for this alkalinity sintered ore than
Example can reach the 70～80% of the total consumption of blast furnace ironmaking raw material；Sintering deposit is produced by sintering machine, when the production capacity of sintering machine is more than
Blast furnace normally using sintering deposit ability when it is necessary to improve use ratio in blast furnace for the sintering deposit give full play to sintering machine
Production capacity, need the basicity simultaneously reducing sintering deposit to balance State of Blast Furnace when improving use ratio in blast furnace for the sintering deposit
Basicity of slag；However, when the basicity of sintering deposit is reduced to below 1.75, the low temperature pulverization rate of such sintering deposit will significantly be gone up
Rise, when blast furnace uses such sintering deposit to produce, can be unfavorable for improving the technical specification of the working of a furnace and blast furnace；Therefore, the alkali of sintering deposit
Degree just should not further reduce after being reduced to 1.75, thus use ratio in blast furnace for the sintering deposit nor further carry
High.
Content of the invention
The technical problem to be solved is: in blast furnace sintering deposit use ratio can be greatly improved by a kind of for offer
Mixed sintering ore deposit.
In order to solve the above problems, the technical solution used in the present invention is: mixed sintering ore deposit, is characterized in: mixed sintering
The acid sinter ore that ore deposit is 0.6～0.8 by basicity and basicity be 1.8～2.3 alkaline sintering deposit according to weight ratio for 1:3～
5 mix.
Further, aforesaid mixed sintering ore deposit, wherein: the weight content of each composition of acid sinter ore is as follows:
sio2: 5.80～6.20%, cao:3.80～4.60%, mgo:0.80～1.20%, al2o3: 1.30～1.90%, feo:8～12%,
Tfe:55～61%.
. further, aforesaid mixed sintering ore deposit, wherein: in acid sinter ore, 5～35mm grade is more than 70%, acid burning
The drum strength of knot ore deposit: 65～70%.
Further, aforesaid mixed sintering ore deposit, wherein: the basicity of acid sinter ore is 0.7, the basicity of alkaline sintering deposit
For 1.85.
Further, aforesaid mixed sintering ore deposit, wherein: the weight of acid sinter ore and alkaline sintering deposit in mixed sintering ore deposit
The ratio of amount is 1:4.
Advantages of the present invention is: mixed sintering ore deposit of the present invention can be greatly improved its use ratio in blast furnace,
Thus giving full play to the production capacity of sintering machine, and due to sintering deposit, the use ratio in blast furnace greatly improves, thus changing
It has been apt to conditions of blast furnace, has improve blast furnace grog rate, reduce the consumption of fuel and raw material in blast furnace, and then reduced molten iron
This, meanwhile, decrease co2Discharge.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.
The acid sinter ore that mixed sintering ore deposit is 0.6～0.8 by basicity and basicity be 1.8～2.3 alkaline sintering deposit by
Mix for 1:3～5 according to weight ratio.In the present embodiment, the basicity of acid sinter ore is 0.7, the alkali of alkaline sintering deposit
Spend for 1.85, in mixed sintering ore deposit, acid sinter ore and the weight ratio of alkaline sintering deposit are 1:4；And acid sinter ore is each
The weight content of composition is as follows: sio2: 5.80～6.20%, cao:3.80～4.60%, mgo:0.80～1.20%, al2o3:
1.30～1.90%, feo:8～12%, tfe:55～61%.In addition, 5～35mm grade is more than 70% in acid sinter ore, acid burning
The drum strength of knot ore deposit: 65～70%.The so setting of the weight content of each composition of acid sinter ore, granularity, drum strength be for
The acid sinter ore is enable preferably to be used for blast furnace ironmaking.
The invention has the benefit that mixed sintering ore deposit of the present invention is to be sintered by the acidity that basicity is 0.6～0.8
Ore deposit and basicity are that 1.8～2.3 alkaline sintering deposit mixes for 1:3～5 according to weight ratio, and acid sinter ore accounts for 1 part, alkali
Property sintering deposit accounts for 3～5 parts, and such mixed configuration overcomes the acid sinter ore that basicity is 0.6～0.8 and cannot be individually used for height
The situation that stove produces, the average basicity through calculating mixed sintering ore deposit is 1.62 about, so makes use in blast furnace for the sintering deposit
Ratio can reach the 88～90% of blast furnace ironmaking raw material consumption, so as to give full play to the production capacity of sintering machine；The making of sintering deposit
After being greatly improved with ratio can advantageously in the working of a furnace direct motion, reduce fuel consumption, reduce co2Discharge, improve blast furnace
Technical specification, and the high silico briquette ore deposit of high price and the usage amount of pellet in blast furnace ironmaking raw material can be reduced further, thus
The cost of molten iron can be substantially reduced.
Claims (5)
1. mixed sintering ore deposit it is characterised in that: the acid sinter ore that mixed sintering ore deposit is 0.6～0.8 by basicity and basicity are 1.8
～2.3 alkaline sintering deposit mixes for 1:3～5 according to weight ratio, and the weight content of each composition of acid sinter ore is such as
Under: sio2: 5.80～6.20%, cao:3.80～4.60%, mgo:0.80～1.20%, al2o3: 1.30～1.90%, feo:8～
12%, tfe:55～61%.
2. mixed sintering ore deposit according to claim 1 it is characterised in that: in acid sinter ore, 5～35mm grade is more than
70%, the drum strength of acid sinter ore: 65～70%.
3. mixed sintering ore deposit according to claim 1 it is characterised in that: the basicity of acid sinter ore be 0.7, alkalescence sintering
The basicity of ore deposit is 1.85.
4. mixed sintering ore deposit according to claim 1 it is characterised in that: in mixed sintering ore deposit acid sinter ore with alkalescence burn
The weight ratio of knot ore deposit is 1:4.
5. mixed sintering ore deposit according to claim 3 it is characterised in that: in mixed sintering ore deposit acid sinter ore with alkalescence burn
The weight ratio of knot ore deposit is 1:4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410849.0A CN104988258B (en) | 2015-07-14 | 2015-07-14 | Mixed sintering ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510410849.0A CN104988258B (en) | 2015-07-14 | 2015-07-14 | Mixed sintering ore |
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| CN104988258A CN104988258A (en) | 2015-10-21 |
| CN104988258B true CN104988258B (en) | 2017-01-18 |
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| CN201510410849.0A Active CN104988258B (en) | 2015-07-14 | 2015-07-14 | Mixed sintering ore |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109852787A (en) * | 2018-12-05 | 2019-06-07 | 江苏永钢集团有限公司 | The production technology of the sinter of small sintering ore amount can be reduced |
| CN112143850A (en) * | 2019-06-28 | 2020-12-29 | 张家港宏昌钢板有限公司 | Sintered ore for electric furnace washing of smelting cord steel and furnace washing method thereof |
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2015
- 2015-07-14 CN CN201510410849.0A patent/CN104988258B/en active Active
Non-Patent Citations (3)
| Title |
|---|
| "中国高炉炉料结构的进步与发展";许满兴;《烧结球团》;20010331;第26卷(第2期);第6-10页 * |
| "双碱度烧结矿应用基础研究";任荣霞 等;《钢铁》;20130331;第48卷(第3期);第19-23页 * |
| "济钢酸性烧结矿的生产及高炉冶炼效果";杨传举;《中国冶金》;20120331;第22卷(第3期);第33-35、38页 * |
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Effective date of registration: 20190709 Address after: 215600 Yonglian Village, Nanfeng Town, Zhangjiagang City, Jiangsu Province Patentee after: Lian Feng Steel (Zhangjiagang) Co., Ltd. Address before: 215628 Yonglian Jiangsu Yonggang Group Co., Ltd., Nanfeng Town, Zhangjiagang City, Suzhou City, Jiangsu Province Patentee before: Jiangsu Yonggang Group Co., Ltd. |
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