CN107460310A - A kind of method for preparing sintering deposit - Google Patents
A kind of method for preparing sintering deposit Download PDFInfo
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- CN107460310A CN107460310A CN201710673798.XA CN201710673798A CN107460310A CN 107460310 A CN107460310 A CN 107460310A CN 201710673798 A CN201710673798 A CN 201710673798A CN 107460310 A CN107460310 A CN 107460310A
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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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- 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
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
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Abstract
The present invention relates to a kind of method for preparing sintering deposit.It includes：According to following proportion ingredient：The parts by weight of limonite 10~26, the parts by weight of iron ore concentrate A 50~60, the parts by weight of Iron Ore Powder B 0~25, the parts by weight of Iron Ore Powder C 14~17, the parts by weight of steel-making slag powder D 1.0~3.0, the parts by weight of lime stone 3.5~7.0, the parts by weight of light dolomite 0~4, the parts by weight of quick lime 1.5~3.5, the parts by weight of coke powder 3.5~5.0, the parts by weight of BF return fines 7.0~11；Raw material obtains compound after adding water mixing granulation；Granulation and cloth, sintering obtain sintering deposit.This method mixes limonite with other iron charges according to certain proportioning, under conditions of ensureing that sinter quality index meets blast furnace process requirement, sinter quality index can be improved, while can effectively reduce sintered material cost effectively using this limonite production sintering deposit.
Description
Technical field
The present invention relates to metallurgy sintered ore deposit field, more particularly to a kind of method for preparing sintering deposit.
Background technology
Sintering deposit is the most important iron-containing charge of blast furnace, according to statistics, sintering deposit accounting in certain enterprise's year Bf Burden
More than 70%.In recent years, influenceed by price of steel product fluctuation, most of iron and steel enterprises largely make to reduce ironmaking cost
With economic furnace charge, so that sintering process process and sinter quality index are difficult to control.For some enterprises, due to certainly
It is magnetic separation of iron ore concentrate to have iron ore deposit, and granularmetric composition is thinner.The severe exacerbation permeability of sintering material bed in sintering process.In order to
Improve permeability of sintering material bed, the fine ore that can be necessarily matched by increasing into iron charge.This fine ore mentioned in this patent, sulphur
Content is low, and granularmetric composition is good, and the more other Australia's ore deposits of crystal water content are high, for the high fine ore of crystal water content, on the one hand, sintering
During the crystallization water removing after, stomata is easily produced, so gas permeability is relatively good；On the other hand, the limonite compared with magnetic concentrate
Sintering needs more fuel consumptions.Because the characteristics of above, causes ratio of the limonite in sintering deposit to be restricted.
Publication No. CN106367588A patent discloses the preparation method of sintering deposit, and this method is will be stanniferous, arsenic and
After zinc-iron concentrate is mixed with other iron ores according to certain proportioning, with addition of certain proportion quick lime equal solvent and fuel.Its
Shortcoming is that iron ore concentrate tin, arsenic and zinc removal efficiency are difficult to control.
Publication No. CN105219951A patent discloses a kind of sintering method of High-iron-content Sinters, and this method will be brown
+ 5mm particle size fractions sift out in iron ore；Second, -5mm particle size fractions in beans shape limonite and quick lime, solid fuel are mixed into system
Grain；3rd, by+5mm particle size fractions and blending ore in beans shape limonite, return mine, agglomerated powder mixes, sintering standard particle is made,
This part material is designated as P2；4th, by raw material P1 and P2 mixing, cloth, igniting, sintering, obtain finished product sintering deposit.The invention
Shortcoming pelletization complex process, cost are high.
The content of the invention
In view of this, the present invention provides a kind of method for preparing sintering deposit.
The present invention provides a kind of method for preparing sintering deposit, and it includes：
Step 1), according to following proportion ingredient：The parts by weight of limonite 10~26, the parts by weight of iron ore concentrate A 50~60, iron ore
The parts by weight of powder B 0~25, the parts by weight of Iron Ore Powder C 14~17, the parts by weight of steel-making slag powder D 1.0~3.0, the weight of lime stone 3.5~7.0
Measure part, the parts by weight of light dolomite 0~4, the parts by weight of quick lime 1.5~3.5, the parts by weight of coke powder 3.5~5.0, BF return fines 7.0
~11 parts by weight；Wherein,
The limonite includes：TFe：57.0~61.5 parts by weight, FeO：0.1~0.5 parts by weight, CaO：0.75~2.35
Parts by weight, SiO2：1.05~3.5 parts by weight, MgO：0.65~1.05 parts by weight；
The iron ore concentrate A includes：TFe：64.5~66.5 parts by weight, FeO：27.5~31.0 parts by weight, CaO：0.75~
2.35 parts by weight, SiO2：1.05~3.5 parts by weight, MgO：The parts by weight of 0.65~parts by weight 1.05, Na2O：0.05~0.15 weight
Part, F：0.08~0.3 parts by weight, S：0.65~0.95 parts by weight, K2O：0.05~0.15 parts by weight；Granularity is 200 eye mesh screens
Percent of pass 90~95%；
The Iron Ore Powder B includes：TFe：59.5~62.5 parts by weight, FeO：0.40~0.85 parts by weight, CaO：0.10~
0.80 parts by weight, SiO2：2.90~4.23 parts by weight, MgO：0.68~1.15 parts by weight, F：0.03~0.20 parts by weight, P：0
~0.15 parts by weight, S：0.025~0.120 parts by weight；
Iron Ore Powder C includes：TFe：58.30~61.50 parts by weight, FeO：5.40~6.85 parts by weight, CaO：0.80~
1.20 parts by weight, SiO2：9.90~12.20 parts by weight, MgO：0.68~1.15 parts by weight, F：0.03~0.20 parts by weight, P：0
~0.15 parts by weight, S：0.025~0.120 parts by weight；
The steel-making slag powder D includes：TFe：20.50~24.50 parts by weight, FeO：13.20~16.85 parts by weight, CaO：
28.10~32.60 parts by weight, SiO2：8.90~12.20 parts by weight, MgO：6.68~10.15 parts by weight, F：0.13~0.40
Parts by weight, P：0.20~0.80 parts by weight, S：0.15~0.58 parts by weight；
Step 2), the raw material for obtaining step 1 obtain compound after adding water mixing granulation；
Step 3), by the compound through granulation and cloth, sintering obtain sintering deposit.
Further, the basicity of the sintering deposit is 1.95~2.05, and MgO weight/mass percentage composition is in the sintering deposit
2.2%~2.4%.
Further, the weight/mass percentage composition of the moisture in the compound is 7%~9%.
Further, the time control of the granulation is 4~6min.
Further, in the sintering process, the compound being arranged on sintering equipment is lighted a fire, during the igniting
Between control be 1~3min, igniting negative pressure is 4000~6000Pa.
Further, the process of the sintering is handled with exhausting, and the negative pressure of the exhausting is 9000~12000Pa.
The present invention provides a kind of method for preparing sintering deposit, and this method is by limonite and other iron charges according to certain proportioning
Mixing, under conditions of ensureing that sinter quality index meets blast furnace process requirement, effectively it can be given birth to using this limonite
Sintering deposit is produced, improves sinter quality index, while can effectively reduce sintered material cost.
Embodiment
The invention discloses a kind of method for preparing sintering deposit, those skilled in the art can use for reference present disclosure, suitably
Modified technique parameter is realized.In particular, all similar replacements and change be for a person skilled in the art
It will be apparent that they are considered as being included in the present invention.The method of the present invention and application are carried out by preferred embodiment
Description, related personnel can substantially not depart from present invention, method described herein and application entered in spirit and scope
Row change is suitably changed with combining, to realize and using the technology of the present invention.
The embodiment of the present invention provides a kind of method for preparing sintering deposit, and it includes：
Step 1), according to following proportion ingredient：The parts by weight of limonite 10~26, the parts by weight of iron ore concentrate A 50~60, iron ore
The parts by weight of powder B 0~25, the parts by weight of Iron Ore Powder C 14~17, the parts by weight of steel-making slag powder D 1.0~3.0, the weight of lime stone 3.5~7.0
Measure part, the parts by weight of light dolomite 0~4, the parts by weight of quick lime 1.5~3.5, the parts by weight of coke powder 3.5~5.0, BF return fines 7.0
~11 parts by weight；Wherein,
The limonite includes：TFe：57.0~61.5 parts by weight, FeO：0.1~0.5 parts by weight, CaO：0.75~2.35
Parts by weight, SiO2：1.05~3.5 parts by weight, MgO：0.65~1.05 parts by weight；
The iron ore concentrate A includes：TFe：64.5~66.5 parts by weight, FeO：27.5~31.0 parts by weight, CaO：0.75~
2.35 parts by weight, SiO2：1.05~3.5 parts by weight, MgO：The parts by weight of 0.65~parts by weight 1.05, Na2O：0.05~0.15 weight
Part, F：0.08~0.3 parts by weight, S：0.65~0.95 parts by weight, K2O：0.05~0.15 parts by weight；Granularity is 200 eye mesh screens
Percent of pass 90~95%；
The Iron Ore Powder B includes：TFe：59.5~62.5 parts by weight, FeO：0.40~0.85 parts by weight, CaO：0.10~
0.80 parts by weight, SiO2：2.90~4.23 parts by weight, MgO：0.68~1.15 parts by weight, F：0.03~0.20 parts by weight, P：0
~0.15 parts by weight, S：0.025~0.120 parts by weight；
Iron Ore Powder C includes：TFe：58.30~61.50 parts by weight, FeO：5.40~6.85 parts by weight, CaO：0.80~
1.20 parts by weight, SiO2：9.90~12.20 parts by weight, MgO：0.68~1.15 parts by weight, F：0.03~0.20 parts by weight, P：0
~0.15 parts by weight, S：0.025~0.120 parts by weight；
The steel-making slag powder D includes：TFe：20.50~24.50 parts by weight, FeO：13.20~16.85 parts by weight, CaO：
28.10~32.60 parts by weight, SiO2：8.90~12.20 parts by weight, MgO：6.68~10.15 parts by weight, F：0.13~0.40
Parts by weight, P：0.20~0.80 parts by weight, S：0.15~0.58 parts by weight；
Step 2), the raw material for obtaining step 1 obtain compound after adding water mixing granulation；
Step 3), by the compound through granulation and cloth, sintering obtain sintering deposit.
Preferably, the basicity of the sintering deposit is 1.95~2.05, and MgO weight/mass percentage composition is in the sintering deposit
2.2%~2.4%.
Further, the weight/mass percentage composition of the moisture in the compound is 7%~9%.
Further, the time control of the granulation is 4~6min.
As preferred scheme of the present invention, in the sintering process, the compound being arranged on sintering equipment is lighted a fire,
The duration of ignition control is 1~3min, and igniting negative pressure is 4000~6000Pa.
Further, the process of the sintering is handled with exhausting, and the negative pressure of the exhausting is 9000~12000Pa.
The method provided by the invention for preparing sintering deposit is to mix limonite according to certain proportioning with other iron charges,
Under conditions of ensureing that sinter quality index meets blast furnace process requirement, this limonite production sintering can be effectively utilized
Ore deposit, improve sinter quality index, while can effectively reduce sintered material cost.
With reference to embodiment, the present invention is expanded on further：
Embodiment
【Material composition】
The material composition used in following examples is as shown in table 1.
The sintering crude fuel chemical composition (wt%) of table 1
【Raw material proportioning】
Raw material proportioning is as shown in table 2 in following examples.
The raw material proportioning (wt%) of the embodiment of table 2
【Production technology】
According to the raw material shown in table 1 and the proportion ingredient shown in table 2.Raw material is carried out in a batch mixer plus water mixes
Even, moisture control is 7.0%；Then pelletized in rerolling machine, Granulation time 3min；Compound after granulation
By the uniform cloth of distributing device to sintering equipment, thickness of feed layer 700mm, sintered igniter is lighted a fire, and igniter fuel is
Natural gas, duration of ignition 2.0min, while sintering equipment bottom starts exhausting, and certain negative pressure is formed under grate, igniting is negative
Press as 5000Pa, it is 10000Pa that air is from top to bottom pumped sintering suction pressure by sinter bed after igniting, is expected after igniting
The combustion zone that layer surface is caught fire finishes with top fuel combustion, and is progressively moved to the bottom bed of material.When combustion zone reaches grate
Afterwards, sintering process terminates, and obtains sintering deposit.
【Sintering performance parameter】
The chemical composition and technic index of sintering deposit prepared by above-described embodiment are as shown in table 3.
The chemical composition and technic index of the sintering deposit of the embodiment of table 3
It can be seen that by table 2 and table 3：
In terms of solid burnup：Compared with datum mark, the increase solid burnup with limonite fine ore proportioning becomes in what is reduced
Gesture, it is more obvious to match bigger reduction.In terms of drum strength：Compared with benchmark example, embodiment 1 and embodiment 2 substitute sintering deposit and turned
Drum intensity slightly reduces.The drum strength highest of embodiment 3.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (6)
- A kind of 1. method for preparing sintering deposit, it is characterised in that including：Step 1), according to following proportion ingredient：The parts by weight of limonite 10~26, the parts by weight of iron ore concentrate A 50~60, Iron Ore Powder B 0 ~25 parts by weight, the parts by weight of Iron Ore Powder C 14~17, the parts by weight of steel-making slag powder D 1.0~3.0, the parts by weight of lime stone 3.5~7.0, The parts by weight of light dolomite 0~4, the parts by weight of quick lime 1.5~3.5, the parts by weight of coke powder 3.5~5.0, BF return fines 7.0~11 Parts by weight；Wherein,The limonite includes：TFe：57.0~61.5 parts by weight, FeO：0.1~0.5 parts by weight, CaO：0.75~2.35 weight Part, SiO2：1.05~3.5 parts by weight, MgO：0.65~1.05 parts by weight；The iron ore concentrate A includes：TFe：64.5~66.5 parts by weight, FeO：27.5~31.0 parts by weight, CaO：0.75~2.35 Parts by weight, SiO2：1.05~3.5 parts by weight, MgO：The parts by weight of 0.65~parts by weight 1.05, Na2O：0.05~0.15 parts by weight, F：0.08~0.3 parts by weight, S：0.65~0.95 parts by weight, K2O：0.05~0.15 parts by weight；Granularity is that 200 eye mesh screens pass through Rate 90~95%；The Iron Ore Powder B includes：TFe：59.5~62.5 parts by weight, FeO：0.40~0.85 parts by weight, CaO：0.10~0.80 Parts by weight, SiO2：2.90~4.23 parts by weight, MgO：0.68~1.15 parts by weight, F：0.03~0.20 parts by weight, P：0~ 0.15 parts by weight, S：0.025~0.120 parts by weight；Iron Ore Powder C includes：TFe：58.30~61.50 parts by weight, FeO：5.40~6.85 parts by weight, CaO：0.80~1.20 weight Measure part, SiO2：9.90~12.20 parts by weight, MgO：0.68~1.15 parts by weight, F：0.03~0.20 parts by weight, P：0~0.15 Parts by weight, S：0.025~0.120 parts by weight；The steel-making slag powder D includes：TFe：20.50~24.50 parts by weight, FeO：13.20~16.85 parts by weight, CaO：28.10~ 32.60 parts by weight, SiO2：8.90~12.20 parts by weight, MgO：6.68~10.15 parts by weight, F：0.13~0.40 parts by weight, P：0.20~0.80 parts by weight, S：0.15~0.58 parts by weight；Step 2), the raw material for obtaining step 1 obtain compound after adding water mixing granulation；Step 3), by the compound through granulation and cloth, sintering obtain sintering deposit.
- 2. preparation method according to claim 1, it is characterised in that the basicity of the sintering deposit is 1.95~2.05, institute The weight/mass percentage composition for stating MgO in sintering deposit is 2.2%~2.4%.
- 3. preparation method according to claim 1, it is characterised in that the weight/mass percentage composition of the moisture in the compound For 7%~9%.
- 4. preparation method according to claim 1, it is characterised in that the time control of the granulation is 4~6min.
- 5. preparation method according to claim 1, it is characterised in that in the sintering process, sintering equipment will be arranged in On compound lighted a fire, duration of ignition control is 1~3min, and igniting negative pressure is 4000~6000Pa.
- 6. preparation method according to claim 5, it is characterised in that the process of the sintering is handled with exhausting, described The negative pressure of exhausting is 9000~12000Pa.
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109182736A (en) * | 2018-10-29 | 2019-01-11 | 包头钢铁（集团）有限责任公司 | A kind of pellet and the method for preparing pellet using blast furnace dedusting ash |
| CN109371229A (en) * | 2018-12-05 | 2019-02-22 | 江苏永钢集团有限公司 | The production technology of sinter |
| CN109517978A (en) * | 2018-11-29 | 2019-03-26 | 武汉钢铁有限公司 | Iron ore concentrate containing siderite participates in the sinter preparation method of ore matching |
| CN109576488A (en) * | 2018-11-07 | 2019-04-05 | 包头钢铁（集团）有限责任公司 | A method of sinter is produced using high proportion Bayan Obo iron ore concentrate |
| CN109652642A (en) * | 2018-12-05 | 2019-04-19 | 江苏永钢集团有限公司 | Solid fuel can be reduced and improve the sintering ore production technology of grade of sinter |
| CN110205484A (en) * | 2019-06-19 | 2019-09-06 | 包头钢铁（集团）有限责任公司 | A kind of sinter and preparation method thereof |
| CN110257626A (en) * | 2019-06-11 | 2019-09-20 | 包头钢铁（集团）有限责任公司 | The method of sinter and the sinter of preparation are prepared using steel rolling iron scale |
| CN111118284A (en) * | 2020-01-15 | 2020-05-08 | 包头钢铁（集团）有限责任公司 | F-containing sinter and production method thereof |
| CN111172385A (en) * | 2020-01-20 | 2020-05-19 | 包头钢铁（集团）有限责任公司 | Method for preparing sintered ore by using high-crystallization-water iron ore powder |
| CN112063835A (en) * | 2020-08-27 | 2020-12-11 | 包头钢铁（集团）有限责任公司 | Method for treating iron-containing solid waste by using sintering process |
| CN113943859A (en) * | 2021-09-27 | 2022-01-18 | 包头钢铁（集团）有限责任公司 | Method for preparing sintered ore by utilizing high-density hematite powder |
| CN115369239A (en) * | 2022-08-01 | 2022-11-22 | 包头钢铁（集团）有限责任公司 | Method for preparing pellets by recleaning iron ore concentrate from bayan obo tailings |
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| CN109182736A (en) * | 2018-10-29 | 2019-01-11 | 包头钢铁（集团）有限责任公司 | A kind of pellet and the method for preparing pellet using blast furnace dedusting ash |
| CN109576488B (en) * | 2018-11-07 | 2021-01-19 | 包头钢铁（集团）有限责任公司 | Method for producing sinter by using high-proportion baiyuneboite concentrate |
| CN109576488A (en) * | 2018-11-07 | 2019-04-05 | 包头钢铁（集团）有限责任公司 | A method of sinter is produced using high proportion Bayan Obo iron ore concentrate |
| CN109517978A (en) * | 2018-11-29 | 2019-03-26 | 武汉钢铁有限公司 | Iron ore concentrate containing siderite participates in the sinter preparation method of ore matching |
| CN109652642A (en) * | 2018-12-05 | 2019-04-19 | 江苏永钢集团有限公司 | Solid fuel can be reduced and improve the sintering ore production technology of grade of sinter |
| CN109371229B (en) * | 2018-12-05 | 2020-08-18 | 江苏永钢集团有限公司 | Production process of sintered ore |
| CN109652642B (en) * | 2018-12-05 | 2020-10-20 | 江苏永钢集团有限公司 | Sinter production process capable of reducing solid fuel and improving grade of sinter |
| CN109371229A (en) * | 2018-12-05 | 2019-02-22 | 江苏永钢集团有限公司 | The production technology of sinter |
| CN110257626A (en) * | 2019-06-11 | 2019-09-20 | 包头钢铁（集团）有限责任公司 | The method of sinter and the sinter of preparation are prepared using steel rolling iron scale |
| CN110205484A (en) * | 2019-06-19 | 2019-09-06 | 包头钢铁（集团）有限责任公司 | A kind of sinter and preparation method thereof |
| CN111118284A (en) * | 2020-01-15 | 2020-05-08 | 包头钢铁（集团）有限责任公司 | F-containing sinter and production method thereof |
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| CN112063835A (en) * | 2020-08-27 | 2020-12-11 | 包头钢铁（集团）有限责任公司 | Method for treating iron-containing solid waste by using sintering process |
| CN113943859A (en) * | 2021-09-27 | 2022-01-18 | 包头钢铁（集团）有限责任公司 | Method for preparing sintered ore by utilizing high-density hematite powder |
| CN115369239A (en) * | 2022-08-01 | 2022-11-22 | 包头钢铁（集团）有限责任公司 | Method for preparing pellets by recleaning iron ore concentrate from bayan obo tailings |
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