CN101736147A - Compound sintering method for powdery iron-containing waste mini-pellets - Google Patents
Compound sintering method for powdery iron-containing waste mini-pellets Download PDFInfo
- Publication number
- CN101736147A CN101736147A CN200910175450A CN200910175450A CN101736147A CN 101736147 A CN101736147 A CN 101736147A CN 200910175450 A CN200910175450 A CN 200910175450A CN 200910175450 A CN200910175450 A CN 200910175450A CN 101736147 A CN101736147 A CN 101736147A
- Authority
- CN
- China
- Prior art keywords
- sintering
- powder
- pellets
- bead
- drum mixer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a compound sintering method for powdery iron-containing waste mini-pellets, which aims to reduce the environmental pollution of raising dust of powdery iron-containing waste materials and avoid the influence on the sintering quality. The method comprises the steps of: arranging two rows of atomizers in a drum mixer; mixing synthetical powder uniformly through the drum mixer, and performing intensified granulation on the synthetical powder to obtain pellets with the diameters of between 3 and 8mm under the action of a rotary force of the drum mixer; mixing the synthetical powder pellets and coke powder in percentage by weight: 96.5 percent of the synthetical powder pellets and 3.5 percent of the coke powder; distributing the mixture on a belt-type sintering machine after the mixing, adopting a double-sloping girdle ignition furnace, using coke oven gas for ignition at the temperature of 1,050 DEG C, using an exhaust fan at a rate of 4,500m3/min for air draft, and consolidating to form mini-pellet ore with the diameter of between 3 and 8mm under the condition of the suction negative pressure of 8,500Pa and the sintering temperature of 1,200 DEG C; and adding the mini-pellet ore taken as an iron material into a sintering mixture for secondary sintering consolidation to obtain compound sintered ore.
Description
Technical field
The present invention relates to a kind of compound sintering method for powdery iron-containing waste mini-pellets.
Background technology
Iron and steel enterprise is for effectively utilizing waste resource, to make steel multiple recycle stocks such as dedusting ash, ironmaking dedusting ash, slag, iron scale, according to a certain percentage by in and mixing form comprehensive powder, and then with comprehensive powder with addition of in raw materials for sintering, carrying out recycle, because of the 70% above material that constitutes comprehensive powder is the fine powder dedusting ash, cause dust from flying serious environment pollution in the comprehensive powder blending process, and dedusting ash water-absorbent difference is difficult for discrete, make the normal concentrated piece of comprehensive powder that occurs in the finished product agglomerate, influence sinter quality.
Summary of the invention
The present invention seeks to overcome the deficiency of above-mentioned prior art, provide a kind of and alleviate powdery iron-containing waste dust pollution environment, avoid it to influence the compound sintering method for powdery iron-containing waste mini-pellets of sintering quality.
The inventive method is:
(1) installs two fog discharge shower nozzles in the drum mixer additional; By the drum mixer mixing, comprehensive powder fully adds water-wet by atomizer in blending process, and strengthens the bead of granulating into 3-8mm under the effect of drum mixer revolving force with comprehensive powder;
(2) comprehensive powder bead is mixed according to following weight percent with coke powder: comprehensive powder bead 96.5%, coke powder 3.5%;
(3) mix back cloth to Dwight-Lloyd sintering machine, adopt diclinic belt ignition furnace, with 1050 ℃ of igniting of coke-oven gas, 4500m
3The vacuum fan exhausting of/min is by the bead nodulizing of 8500Pa exhausting negative pressure and the 1200 ℃ of fixed formation of sintering temperature 3-8mm;
(4) the bead nodulizing is allocated in the sinter mixture as a kind of iron charge, cloth is to Dwight-Lloyd sintering machine, by the vacuum fan exhausting of diclinic belt ignition furnace with 1050 ℃ of igniting of coke-oven gas, 9000m3/min, under 1250 ℃ of exhausting negative pressure 1.3KPa and sintering temperatures, it is fixed to carry out double sintering with addition of the sinter mixture of bead nodulizing, generates composite sinter.
The drum mixer model is 2 * 6 meters of φ.It is 50 square metres and 100 square metres of two kinds of sinter machines that Dwight-Lloyd sintering machine adopts sintering area respectively.
The present invention is collected in powdery iron-containing waste in the drum mixer and granulates, and having solved dust from flying influences environmental problem; Powdery iron-containing waste is carried out fixed separately, concentrate volatile matter and dust flue gas in the discharging iron-containing waste, alleviate big, the environmental protection problem not up to standard of sintering smoke stack emission concentration; Powdery iron-containing waste is made the bead nodulizing earlier, prepare burden again, reduced the fluctuation of iron-containing waste composition, help improving agglomerate output and improve sinter quality the agglomerating influence as the sintering iron charge.
Embodiment
With the drum mixer mixing of comprehensive powder by 2 * 6 meters of φ, 7 rev/mins of rotating speeds, 2 ° at inclination angle, install two fog discharge shower nozzles in the drum mixer additional, in the drum mixer blending process, fully add water-wet with atomizer, and under the effect of drum mixer rotatory mechanical force, comprehensive powder is strengthened the bead of granulating into 3-8mm.
96.5% comprehensive powder bead and 3.5% coke powder are carried and the roll feeder feed by wide 1.6 meters conveyor drive, cloth to the Dwight-Lloyd sintering machine of 50 square metres of long 33.33 meters wide 1.5 meters sintering areas, by diclinic belt ignition furnace with coke-oven gas igniting (1050 ℃ of ignition temperatures), 4500m
3The vacuum fan exhausting of/min is under 1200 ℃ of exhausting negative pressure 8500Pa and sintering temperatures, with the bead nodulizing of the fixed formation of mixture 3-8mm.
The bead nodulizing is allocated in the sinter mixture as a kind of iron charge, sinter mixture is carried and the roll feeder feed by wide 1.6 meters conveyor drive equally, cloth is to the Dwight-Lloyd sintering machine of 100 square metres of long 40 meters wide 2.5 meters sintering areas, by the vacuum fan exhausting of diclinic belt ignition furnace with coke-oven gas igniting (1050 ℃ of ignition temperatures), 9000m3/min, under 1250 ℃ of exhausting negative pressure 1.3KPa and sintering temperatures, it is fixed to carry out double sintering with addition of the sinter mixture of bead nodulizing, generates composite sinter.
Claims (2)
1. compound sintering method for powdery iron-containing waste mini-pellets is characterized in that:
(1) installs two fog discharge shower nozzles in the drum mixer additional; By the drum mixer mixing, comprehensive powder fully adds water-wet by atomizer in blending process, and strengthens the bead of granulating into 3-8mm under the effect of drum mixer revolving force with comprehensive powder;
(2) comprehensive powder bead is mixed according to following weight percent with coke powder: comprehensive powder bead 96.5%, coke powder 3.5%;
(3) mix back cloth to Dwight-Lloyd sintering machine, adopt diclinic belt ignition furnace, with 1050 ℃ of igniting of coke-oven gas, 4500m
3The vacuum fan exhausting of/min is by the bead nodulizing of 8500Pa exhausting negative pressure and the 1200 ℃ of fixed formation of sintering temperature 3-8mm;
(4) the bead nodulizing is allocated in the sinter mixture as a kind of iron charge, cloth is to Dwight-Lloyd sintering machine, by the vacuum fan exhausting of diclinic belt ignition furnace with 1050 ℃ of igniting of coke-oven gas, 9000m3/min, under 1250 ℃ of exhausting negative pressure 1.3KPa and sintering temperatures, it is fixed to carry out double sintering with addition of the sinter mixture of bead nodulizing, generates composite sinter.
2. compound sintering method for powdery iron-containing waste mini-pellets as claimed in claim 1 is characterized in that the drum mixer model is 2 * 6 meters of φ; It is 50 square metres and 100 square metres of two kinds of sinter machines that Dwight-Lloyd sintering machine adopts sintering area respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101754503A CN101736147B (en) | 2009-11-13 | 2009-11-13 | Compound sintering method for powdery iron-containing waste mini-pellets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101754503A CN101736147B (en) | 2009-11-13 | 2009-11-13 | Compound sintering method for powdery iron-containing waste mini-pellets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101736147A true CN101736147A (en) | 2010-06-16 |
| CN101736147B CN101736147B (en) | 2011-06-29 |
Family
ID=42460177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101754503A Expired - Fee Related CN101736147B (en) | 2009-11-13 | 2009-11-13 | Compound sintering method for powdery iron-containing waste mini-pellets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101736147B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839280A (en) * | 2012-08-27 | 2012-12-26 | 中南大学 | Selective distribution and granulation method of fuel for enhancing iron ore sintering with biomass energy |
| CN103509942A (en) * | 2013-09-10 | 2014-01-15 | 苏州科睿特能源科技有限公司 | Atomized water cooling method and atomized water cooling device of sintered ore |
| CN105219952A (en) * | 2015-08-20 | 2016-01-06 | 四川德胜集团钒钛有限公司 | A kind of blast furnace sinter method utilizing low-heat value gas |
| CN105274349A (en) * | 2015-11-26 | 2016-01-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Low-sulfur metallized pellet produced by means of blast furnace fly ash and preparation method of low-sulfur metallized pellet |
| CN106521146A (en) * | 2016-10-10 | 2017-03-22 | 山东钢铁股份有限公司 | Utilization method for sintering machine head dedusting ash |
| CN112941310A (en) * | 2021-01-26 | 2021-06-11 | 山西太钢不锈钢股份有限公司 | Method for improving quality stability of mixed iron material for sintering |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1162020A (en) * | 1996-04-09 | 1997-10-15 | 安阳钢铁集团有限责任公司 | Method for adhering solid fuel onto granulated sintered mixed material |
| CN101476032B (en) * | 2009-02-12 | 2011-06-08 | 重庆科绿威科技开发有限公司 | Metallurgy sintering processing method for urban domestic garbage incineration flyash |
-
2009
- 2009-11-13 CN CN2009101754503A patent/CN101736147B/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839280A (en) * | 2012-08-27 | 2012-12-26 | 中南大学 | Selective distribution and granulation method of fuel for enhancing iron ore sintering with biomass energy |
| CN103509942A (en) * | 2013-09-10 | 2014-01-15 | 苏州科睿特能源科技有限公司 | Atomized water cooling method and atomized water cooling device of sintered ore |
| CN105219952A (en) * | 2015-08-20 | 2016-01-06 | 四川德胜集团钒钛有限公司 | A kind of blast furnace sinter method utilizing low-heat value gas |
| CN105274349A (en) * | 2015-11-26 | 2016-01-27 | 攀钢集团攀枝花钢铁研究院有限公司 | Low-sulfur metallized pellet produced by means of blast furnace fly ash and preparation method of low-sulfur metallized pellet |
| CN106521146A (en) * | 2016-10-10 | 2017-03-22 | 山东钢铁股份有限公司 | Utilization method for sintering machine head dedusting ash |
| CN112941310A (en) * | 2021-01-26 | 2021-06-11 | 山西太钢不锈钢股份有限公司 | Method for improving quality stability of mixed iron material for sintering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101736147B (en) | 2011-06-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101736147B (en) | Compound sintering method for powdery iron-containing waste mini-pellets | |
| CN103334004B (en) | Method for producing sinter from Yuanjia village concentrate powder by using large sintering machine | |
| CN102230040A (en) | Ironmaking method | |
| CN105112583B (en) | A kind of method for allocating State of Blast Furnace past raising coal combustion rate in injection coal into | |
| CN112553462A (en) | Sintered ore containing sintered dedusting ash pellets and preparation method thereof | |
| CN105776218A (en) | Calcium carbide preparation system and method | |
| CN111850291B (en) | Pretreatment method of sintered solid fuel and preparation method of sintered mixture | |
| JP5103802B2 (en) | Method for treating wet dust and method for producing sintered ore | |
| JP5817629B2 (en) | Method for producing sintered ore using finely granulated carbon | |
| CN107641710A (en) | A kind of agglomerates method for reducing bentonite usage amount | |
| CN103038370B (en) | Method for producing starting material for sintering | |
| JP6459724B2 (en) | Method for producing sintered ore | |
| CN101921909B (en) | Method for controlling ferrous oxide content in sintering ore | |
| JP6734370B2 (en) | Raw material processing apparatus and raw material processing method | |
| JP4087982B2 (en) | Granulation method for raw materials for sintering with excellent flammability | |
| CN113247904B (en) | Method for recovering micro silicon powder | |
| CN101445870A (en) | Joint adding method for producing fuel flux by sintering iron ore powder and device thereof | |
| CN103038368A (en) | Method for producing starting material for sintering | |
| CN112708754A (en) | Carbon-free sintering method and system for iron ore powder | |
| CN113736989A (en) | Sintered ore using dust-removing coke and preparation method thereof | |
| CN102268542B (en) | Method for preparing hematite powder pellets | |
| CN102808080A (en) | Method for increasing waste gas circulation sintering utilization coefficient and sintered ore barrate strength | |
| CN105755194B (en) | A kind of Iron Ore Powder melts poly- prereduction method | |
| WO2014129282A1 (en) | Method for manufacturing reduced iron | |
| JP4630091B2 (en) | Pretreatment method of sintering raw material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |