CN106119449B - A kind of blast furnace whole world group smelting process - Google Patents
A kind of blast furnace whole world group smelting process Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 230000008569 process Effects 0.000 title claims abstract description 41
- 238000003723 Smelting Methods 0.000 title claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 58
- 229910052742 iron Inorganic materials 0.000 claims abstract description 32
- 239000000571 coke Substances 0.000 claims abstract description 22
- 239000002893 slag Substances 0.000 claims abstract description 19
- 238000006722 reduction reaction Methods 0.000 claims abstract description 18
- 239000008188 pellet Substances 0.000 claims abstract description 17
- 238000002485 combustion reaction Methods 0.000 claims abstract description 13
- 239000003245 coal Substances 0.000 claims abstract description 9
- 235000019738 Limestone Nutrition 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims abstract description 8
- 239000006028 limestone Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000002817 coal dust Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 7
- 238000010079 rubber tapping Methods 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 238000010304 firing Methods 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 11
- 229910052760 oxygen Inorganic materials 0.000 claims description 11
- 239000001301 oxygen Substances 0.000 claims description 11
- 239000000446 fuel Substances 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 239000003034 coal gas Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 1
- 239000007924 injection Substances 0.000 claims 1
- 239000007921 spray Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000005245 sintering Methods 0.000 description 10
- 241001417490 Sillaginidae Species 0.000 description 7
- 230000009467 reduction Effects 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000005453 pelletization Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 208000002352 blister Diseases 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003920 environmental process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000000505 pernicious effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical compound S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/007—Conditions of the cokes or characterised by the cokes used
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention relates to a kind of blast furnace whole world to roll into a ball smelting process, concrete technology is to be added in blast furnace from furnace roof after mixing fluxed pellets, slag and lime stone, coke and ore are added portionwise in blast furnace, coke batch weight and injecting coal quantity size are adjusted in smelting process, any one distributing mode in annular, fixed point, sector is realized by blast furnace material distribution chute, shape of charge level is controlled, edge and center twice flow pattern are formed；It will be sent into blast furnace through hot air duct after >=1150 DEG C of high-temperature hot-airs pressurizations, coke and coal dust firing is made to participate in blast furnace internal oxidition reduction reaction；Ore passes through lump zone, cohesive zone, dropping zone, air port combustion zone and cupola well in blast furnace and carries out indirectly and directly reduction reaction successively, generates liquid molten iron and discharges out of the furnace through tapping hole.The present invention cancels sinter, and blast furnace process is carried out using 80 100% weight ratio of fluxed pellets, reduces environmental pollution in sinter production process and reduces process energy consumption.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a kind of blast furnace whole world group smelting process.
Background technology
China promises to undertake to the world to the year two thousand twenty emission reduction CO240-45% was reduced than 2005.China's Bf Burden is with big
Based on ratio sinter, existing iron ore powder sintering production technology uses continuous pallettype sintering machine more, using being directly exposed in environment
Exhausting refrigerating mode is produced, and sintering system leaks out, exhausted air quantity is big, dust is more, pollutant is more, and intractability is big, costly
Deng the problem as environmental improvement.Produce about 1,000,000,000 tons of sinter per year at present, 3000-5000m is discharged in sinter per ton3Flue gas, one
Year reaches 30000-50000 hundred million to harmful sintering flue gases such as air discharge carbonated, oxysulfide, nitrogen oxides, bioxin
m3.However desulphurization plant is irregular, operating cost is high, and the pernicious gases such as nitrogen oxides He bioxin there is no effective purification to push away
Wide method causes the foul pollution of environment, and prodigious threat is caused to the health of our people.And prepared by fluxed pellets
Process ton mine smoke discharge amount is in 2000-3000m3, process energy consumption reduces 20-30kgce/t, and it is low that exhaust gas volumn lacks intractability, together
When reduce process energy consumption, reduce CO2Discharge capacity.The western countries such as America and Europe in order to reduce the environmental pollution of sintering production process, by
Step be decreased or turned off sintering machine and based on being smelted with pellet.Therefore, from environmental protection, the overall situation of energy-saving and emission-reduction we want
The State of Blast Furnace based on sinter smelts pattern at present for transformation, and gradually transition is the blast furnace smelting based on environmental-friendly pelletizing production
Refining pattern.
The Iron Ore Powder resource in China is based on the iron ore concentrate after lean ore final election, and granularity is more carefully suitable for pelletizing.Pelletizing production
Process energy consumption marks coal/t than sintering circuit low energy consumption 20-30kg, is 50% of sintering circuit or so, pelletizing process pollutant emission
It is also only the 50% of sintering circuit, is the mode of production of clean low consumption compared with sinter produces.
Fluxed pellets production technology setting Iron Ore Powder what sealing recycled by grate kiln or belt type roasting machine
It is roasted on standby, can greatly reduce environmental pollution and process consumption.Country's blast furnace uses large scale sinter, pelletizing at present
Mine ratio is average 15% or so, and Taiyuan Iron and Steel Co., Shoudu Iron and Steel Co capital Tang etc. are no more than 30%, and domestic extremely individual small furnace pellet ratios reach
45% or so.Sinter can not used by researching and developing one kind, and use whole world group blast furnace smelting process, and being smelted in blast furnace can
To reduce slag ratio, fuel consumption is reduced, reduces CO2Discharge capacity is energy-saving and environment-friendly blast furnace process pattern.
Invention content
In order to solve the above technical problems, the present invention provides a kind of iron-smelting process that whole world group smelts, the technique is to produce energy
It is that raw material carries out blast furnace process to consume pellet relatively low, that discharge is less, and the economy of ore smelting is improved while reducing discharge
Benefit.
The present invention adopts the following technical scheme that a kind of blast furnace whole world group smelting process includes the following steps：
1）By fluxed pellets press 80-100% mass ratios, lump ore by 0-20% mass ratios, slag and lime stone according to
It is added in blast furnace from furnace roof after the mixing of 0-10% mass ratios；
2）Ensure smelting demand based on ore batch weight, coke and ore are added portionwise in blast furnace, to ensure blast furnace process
It is smoothed out, is realized by adjusting coke batch weight and injecting coal quantity size；
3）Any one distributing mode in annular, fixed point, sector is realized by blast furnace material distribution chute, controls charge level shape
Shape forms edge and center twice flow pattern；
4）Using exhaust gas of hot-blast stove preheat coal gas and air, combustion heating hot-blast stove, will after hot air furnace heat exchange >=
1150 DEG C of high-temperature hot-airs are sent into blast furnace after pressurization through hot air duct, so that coke and coal dust firing is participated in the reduction of blast furnace internal oxidition anti-
It answers；
5）Control for Oxygen Content is in 21%-35% in air blast；
6）Ore passes through lump zone successively in blast furnace, cohesive zone, dropping zone, air port combustion zone and cupola well carry out indirectly and
Direct reduction reactor generates liquid molten iron and discharges out of the furnace through tapping hole.
Technique of the present invention can reach the efficient low of blast furnace process slag ratio 185-300kg/t, fuel ratio 450-480kg/t
Consume smelting pattern.
Process continuity production of the present invention contains Si：0.1-0.5%, contain Fe >=99.45%, contain S：0.01-0.03%'s is excellent
Matter molten iron.
Step 2 of the present invention）In coke batch weight be ore batch weight 1/3-1/5.
Step 2 of the present invention）In injecting coal quantity be 100-220kg/t.
Step 2 of the present invention）In ore batch weight in pellet weight percent accounting be 80-100%.
Step 4 of the present invention）In high-temperature hot-air, air quantity 1500-8000m/min, wind pressure 200-500kpa.
The mentality of designing of the present invention：
1, final election need not be crushed for the steel plant such as slag iron content solid waste and enters sintering for agglumeration, can be used as flux
Directly be broken into suitable particle size and enter blast furnace process, can not only recycle ferro element resource, but can reduce re-sinter caused by energy
Source wastes.
2, in terms of cloth：Since there is pellet good rollability, natural angle of rest (repose) there was only 35-40。, in blast furnace material distribution
It needs to realize the distributing modes such as annular, fixed point, sector by distributor chute in the process, controls rational shape of charge level, development is closed
The edge and center twice flow pattern of reason, blast furnace gas utilization rate are controlled 43% or more.
3, in terms of blast furnace process：Whole world group steelmaking furnace cohesive zone position is high, and section is wide can cause blast furnace stock column for softening
Gas permeability changes very greatly, is very different with the smelting of large scale sinter, is made to the indirect reduction and direct-reduction of blast furnace burden
At influence, need to control reasonable blowing system and thermal system.
4, in terms of slagging regime：Whole world group, which smelts, has the less quantity of slag, is caused to the quality and ingredient of blase furnace cast iron
Very big influence.The quantity of slag can cause desulfurization difficult less, and molten iron S contents severely exceed, and cause iron quality accident.By controlling clinker
Basicity 1.0-1.5 levels adjust pig iron ingredient.
5, in iron quality control aspect：In the case of positive generation production, ensure that Si contents are in 0.1- in molten iron chemical composition
0.5%, Fe content are in 99.45%, S contents in 0.01-0.03%.
It is using the advantageous effect of above-mentioned technical proposal：1. cancelling sinter, fluxed pellets 80-100% weight is used
Ratio, slag and lime stone carry out blast furnace process according to 0-10% weight ratio, reduce environmental pollution in sinter production process
With reduction process energy consumption.2. economic and technical norms are excellent, blast furnace process slag ratio 185-300kg/t, fuel ratio 450-480kg/t's
Efficient low-consume smelts pattern, can be further reduced CO2Discharge capacity.3. consecutive production Si contents are in 0.1-0.5%, Fe contents
>=99.45%, S content are in the high-quality molten iron of 0.01-0.03%.
Description of the drawings
Fig. 1 is present invention process flow chart.
Specific implementation mode
The present invention is described in further details below in conjunction with the drawings and the specific embodiments.
The present invention provides a kind of blast furnace whole world to roll into a ball smelting process, it is therefore intended that cancels existing high pollution maximum discharge sinter
Production technology uses the pellet blast furnace process pattern of relative clean.Use existing blast furnace process pattern and the blast furnace smelting of whole world group
Refining difference is shown in Table 1
1 existing blast furnace process pattern of table and the blast furnace process comparison of whole world group
Embodiment 1
With 450m3For blast furnace：
A kind of blast furnace whole world group smelting process, includes the following steps：
1）Fluxed pellets are pressed into 80% mass ratio, lump ore is by 15% mass ratio, slag and lime stone according to 5% weight
It is added in blast furnace from furnace roof after ratio mixing, feed grade 61.85%；
2）Coke and ore are added portionwise in blast furnace, ore batch weight 25t/t, coke batch weight is the 1/ of ore batch weight
5, injecting coal quantity 133kg/t；
3）Annular distributing mode is realized by blast furnace material distribution chute, is controlled shape of charge level, is formed edge and center twice gas
Stream mode；
4）Using exhaust gas of hot-blast stove preheat coal gas and air, combustion heating hot-blast stove, will after hot air furnace heat exchange,
It is sent into blast furnace through hot air duct after 1151 DEG C of high-temperature hot-air pressurizations, air quantity 1558m/min, wind pressure 241kpa make coke and coal dust
Burning participates in blast furnace internal oxidition reduction reaction；
5）Control for Oxygen Content is 21% in air blast, oxygen enrichment percentage 2.41%；
6）Ore passes through lump zone successively in blast furnace, cohesive zone, dropping zone, air port combustion zone and cupola well carry out indirectly and
Direct reduction reactor generates liquid molten iron and discharges out of the furnace through tapping hole, capacity factor of a blast furnace 4.01t/m3D, molten iron temperature
1493 DEG C, Si contents 0.35%, Fe contents 99.45%, S contents 0.028%.
The efficient low-consume that the present embodiment can reach blast furnace process slag ratio 201kg/t, fuel ratio 461kg/t smelts pattern.
Embodiment 2
With 450m3For blast furnace：
A kind of blast furnace whole world group smelting process, includes the following steps：
1）Fluxed pellets are pressed into 90% mass ratio, lump ore is by 7% mass ratio, slag and lime stone according to 3% weight ratio
It is added in blast furnace from furnace roof after example mixing, feed grade 60%；
2）Coke and ore are added portionwise in blast furnace, ore batch weight 25t/t, coke batch weight is the 1/ of ore batch weight
3, injecting coal quantity 100kg/t；
3）Fan-shaped distributing mode is realized by blast furnace material distribution chute, is controlled shape of charge level, is formed edge and center twice gas
Stream mode；
4）Using exhaust gas of hot-blast stove preheat coal gas and air, combustion heating hot-blast stove, will after hot air furnace heat exchange,
It is sent into blast furnace through hot air duct after 1180 DEG C of high-temperature hot-air pressurizations, air quantity 1620m/min, wind pressure 253kpa make coke and coal dust
Burning participates in blast furnace internal oxidition reduction reaction；
5）Control for Oxygen Content is 28% in air blast；Oxygen enrichment percentage 7%；
6）Ore passes through lump zone successively in blast furnace, cohesive zone, dropping zone, air port combustion zone and cupola well carry out indirectly and
Direct reduction reactor generates liquid molten iron and discharges out of the furnace through tapping hole, capacity factor of a blast furnace 3.91t/m3D, molten iron temperature
1502 DEG C, Si contents 0.1%, Fe contents 99.82%, S contents 0.010%.
The efficient low-consume that the present embodiment can reach blast furnace process slag ratio 297kg/t, fuel ratio 480kg/t smelts pattern.
Embodiment 3
With 450m3For blast furnace：
A kind of blast furnace whole world group smelting process, includes the following steps：
1）Fluxed pellets are pressed into 100% mass ratio, lump ore is by 0% mass ratio, slag and lime stone according to 0% weight
It is added in blast furnace from furnace roof after ratio mixing, feed grade 62%；
2）Coke and ore are added portionwise in blast furnace, ore batch weight 25t/t, coke batch weight is the 1/ of ore batch weight
4, injecting coal quantity 220kg/t；
3）Fixed point distributing mode is realized by blast furnace material distribution chute, is controlled shape of charge level, is formed edge and center twice gas
Stream mode；
4）Using exhaust gas of hot-blast stove preheat coal gas and air, combustion heating hot-blast stove, will after hot air furnace heat exchange,
It is sent into blast furnace through hot air duct after 1250 DEG C of high-temperature hot-air pressurizations, air quantity 1580m/min, wind pressure 250kpa make coke and coal dust
Burning participates in blast furnace internal oxidition reduction reaction；
5）Control for Oxygen Content is 35% in air blast；Oxygen enrichment percentage 14%；
6）Ore passes through lump zone successively in blast furnace, cohesive zone, dropping zone, air port combustion zone and cupola well carry out indirectly and
Direct reduction reactor generates liquid molten iron and discharges out of the furnace through tapping hole, capacity factor of a blast furnace 4.0t/m3D, molten iron temperature 1520
DEG C, Si contents 0.4%, Fe contents 99.51%, S contents 0.028%.
The efficient low-consume that the present embodiment can reach blast furnace process slag ratio 188kg/t, fuel ratio 455kg/t smelts pattern.
Because the present invention has industry universality, the present invention is applied, and blast furnace is not limited to above-mentioned furnace volume, to all appearances
Product blast furnace is all about scheduled in the scope of the claims of the present invention.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although with reference to above-described embodiment to this hair
It is bright to be described in detail, it will be understood by those of ordinary skill in the art that：Still can the present invention be modified or be waited
With replacing, without departing from the spirit or scope of the invention, or any substitutions, the power in the present invention should all be covered
In sharp claimed range.
Claims (2)
1. smelting process is rolled into a ball in a kind of blast furnace whole world, which is characterized in that include the following steps：
1）Fluxed pellets are pressed into 80% mass ratio, lump ore is by 15% mass ratio, slag and lime stone according to 5% weight ratio
It is added in blast furnace from furnace roof after mixing, feed grade 61.85%；
2）Coke and ore are added portionwise in blast furnace, ore batch weight 25t/t, coke batch weight is the 1/5 of ore batch weight, coal powder injection
Amount is 133kg/t；Blast furnace process slag ratio 201kg/t, fuel ratio 461kg/t；
3）Annular distributing mode is realized by blast furnace material distribution chute, is controlled shape of charge level, is formed edge and center twice air-flow mould
Formula；
4）The coal gas and air preheated using exhaust gas of hot-blast stove, combustion heating hot-blast stove will be after hot air furnace heat exchange, 1151 DEG C
It is sent into blast furnace through hot air duct after high-temperature hot-air pressurization, air quantity 1558m/min, wind pressure 241kpa make coke and coal dust firing join
With blast furnace internal oxidition reduction reaction；
5）Control for Oxygen Content is 21% in air blast, oxygen enrichment percentage 2.41%；
6）Ore passes through lump zone, cohesive zone, dropping zone, air port combustion zone and cupola well successively in blast furnace to carry out indirectly and directly
Reduction reaction generates liquid molten iron and discharges out of the furnace through tapping hole, capacity factor of a blast furnace 4.01t/m3D, 1493 DEG C of molten iron temperature,
Si contents 0.35%, Fe contents 99.45%, S contents 0.028%.
2. smelting process is rolled into a ball in a kind of blast furnace whole world, which is characterized in that include the following steps：
1）Fluxed pellets are pressed into 90% mass ratio, lump ore is mixed according to 3% weight ratio by 7% mass ratio, slag and lime stone
It is added in blast furnace from furnace roof after conjunction, feed grade 60%；
2）Coke and ore are added portionwise in blast furnace, ore batch weight 25t/t, coke batch weight is the 1/3 of ore batch weight, spray
Coal amount is 100kg/t；Blast furnace process slag ratio 297kg/t, fuel ratio 480kg/t；
3）Fan-shaped distributing mode is realized by blast furnace material distribution chute, is controlled shape of charge level, is formed edge and center twice air-flow mould
Formula；
4）The coal gas and air preheated using exhaust gas of hot-blast stove, combustion heating hot-blast stove will be after hot air furnace heat exchange, 1180 DEG C
It is sent into blast furnace through hot air duct after high-temperature hot-air pressurization, air quantity 1620m/min, wind pressure 253kpa make coke and coal dust firing join
With blast furnace internal oxidition reduction reaction；
5）Control for Oxygen Content is 28% in air blast；Oxygen enrichment percentage 7%,
6）Ore passes through lump zone, cohesive zone, dropping zone, air port combustion zone and cupola well successively in blast furnace to carry out indirectly and directly
Reduction reaction generates liquid molten iron and discharges out of the furnace through tapping hole, capacity factor of a blast furnace 3.91t/m3D, 1502 DEG C of molten iron temperature,
Si contents 0.1%, Fe contents 99.82%, S contents 0.010%.
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| CN107119163A (en) * | 2017-06-08 | 2017-09-01 | 唐山钢铁集团有限责任公司 | A kind of Burden distribution method of blast furnace of pelletizing at high proportion |
| CN108929927A (en) * | 2018-08-21 | 2018-12-04 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of blast furnace smelting method of the vanadium titano-magnetite of high proportion pellet ore |
| CN112226558A (en) * | 2020-10-12 | 2021-01-15 | 王玉平 | Blast furnace iron-smelting method using high-proportion alkaline pellets and pellet distributing machine |
| CN113265496B (en) * | 2021-02-07 | 2023-01-31 | 首钢集团有限公司 | A blast furnace ironmaking method using full-acid pellets as raw material |
| CN117025864B (en) * | 2023-06-28 | 2025-11-14 | 东北大学 | A furnace charge structure to improve the softening and melting properties of high-chromium vanadium-titanium magnetite. |
| CN117329862B (en) * | 2023-09-27 | 2024-10-29 | 山东钢铁集团永锋临港有限公司 | Lump ore drying system and method taking sintering waste heat as heat source |
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| CN103468838A (en) * | 2013-08-23 | 2013-12-25 | 安阳钢铁股份有限公司 | Blast furnace ironmaking technology adopting high pellet ore proportion |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103468838A (en) * | 2013-08-23 | 2013-12-25 | 安阳钢铁股份有限公司 | Blast furnace ironmaking technology adopting high pellet ore proportion |
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| 100%使用熔剂性复合球团矿冶炼生铁有利于减少NOx排放;许贵宾等;《2015年京津冀钢铁企清洁生产、环境保护交流会论文集》;20150429;第111-119页 * |
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