CN102061379A - Oxygen-enriched sintering process method - Google Patents
Oxygen-enriched sintering process method Download PDFInfo
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- CN102061379A CN102061379A CN2009102284929A CN200910228492A CN102061379A CN 102061379 A CN102061379 A CN 102061379A CN 2009102284929 A CN2009102284929 A CN 2009102284929A CN 200910228492 A CN200910228492 A CN 200910228492A CN 102061379 A CN102061379 A CN 102061379A
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- oxygen
- sintering
- enriched
- sintering process
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Abstract
The invention discloses an oxygen-enriched sintering process method. In the sintering production process, air with a certain concentration is blown to the upper part of a sintering machine, and the continuous production of oxygen-enriched sintering is performed by increasing the oxygen content in the air so as to fulfill the aims of improving the quality of sintered minerals and reducing solid fuel consumption. A novel sintering process production method can improve the thickness of material layers, improve the granularity composition of the sintered minerals, reduce the solid fuel consumption and facilitate smooth desulfuration. The oxygen-enriched sintering process is a novel process and novel method for effectively improving the quality of the sintered minerals.
Description
Affiliated technical field:
The present invention is a kind of novel production process in the SINTERING PRODUCTION, to contain certain density oxygen and be blown into oxygen level in the sinter machine top increase air, carry out the continuity production of oxygen-enriched sintering, this technology can effectively improve the agglomerate yield and quality, reduces the consumption of sintering process.
Background technology:
In sintering production process, usually occur owing to shortage of heat, combustion processes is insufficient, causes the agglomerate surface strength bad, and agglomerate is pulverized.Sintering process high temperature is narrow, takes off the S reaction and just can not fully carry out, and the stove sinter quality is gone in influence, because fuel is concentrated and fuel granularity is thick, the bad place of ventilation property is easy to generate stronger reducing atmosphere, and is totally unfavorable to SINTERING PRODUCTION.As in sintering process, above the sinter machine bed of material, being blown into oxygen, increase oxygen level in the air, intensified-sintered process, form enough oxidizing atmosphere and good condition of divergence, increase mixture ventilation, the thick local reductibility of fuel granularity is increased, promote the carrying out of desulphurization reaction, improve sintering process, improve the every technico-economical comparison of sintering comprehensively.
Summary of the invention:
In order to overcome existing sintering production process oxygen deficiency, shortage of heat, temperature are hanged down and are caused the agglomerate surface strength bad, and high temperature is narrow, and etc. drawback, patent of the present invention designs the technical process of a kind of sintering oxygen supply.Be blown into oxygen toward the sinter machine top, increase airborne oxygen level, oxygen is applied to SINTERING PRODUCTION, reach and improve agglomerate yield and quality purpose.
In order to solve the technical scheme that the deficiencies in the prior art take be: use the valve control techniques of oxygen-enriched injection, formulate practicable oxygen-enriched sintering and send and stop oxygen valve control scheme.(seeing figure one) comprises the nitrogen purge program, send control techniques that oxygen stops oxygen program, oxygen flow etc.
Technological design piping drawing (seeing figure two), pipeline are distributed in the sinter machine top.Going out No. four bellows east sides of holding-zone is first row's oxygen enrichment pipeline section start, and last row terminates in the bellows east side No. nine, and a discharge pipe is provided with six spray oxygen mouths altogether on North and South direction.Perpendicular to the sintering charge level oxygen is sprayed into sinter bed.10 comb lateral arrangement are set altogether in the sinter machine top between No. four bellows and No. nine bellows, the purity oxygen flow of each nozzle of Design Theory is 10～15m3/h, the ratio that on average accounts for mixing air is 60%, and sinter machine top oxygen enrichment piping diagram is seen the pipeline technology layout drawing.The mixing air flow that vacuum fan enters the oxygen-enriched sintering total pipeline is designed to 6000～8000m3/h.Pressure is 0.4～0.6Mpa during the design nitrogen purging, and oxygen oxygen supply pressure is 0.2Mpa～0.4Mpa by company's hyperbaric oxygen decompression.Oxygen is blown into sinter bed (seeing figure two) by several discharge pipes of lateral arrangement above sinter machine.Oxygen flow is 600～800m3/h in the pipeline.Temperature: t=40 ℃ flow: Q=750～840Nm3/h, pressure regulation upstream pressure: P1=0.38MPa (the adapter road nominal pressure PN=0.6MPa of institute) pressure regulation downstream pressure: P2=1500pa.
This beneficial effect of the invention is: improve bed thickness, improve agglomerate size composition, reduce solid burnup, after oxygen enrichment increased, the sintering process mixture ventilation increased, and impels removing smoothly of sulphur.
Description of drawings:
Below in conjunction with accompanying drawing and enforcement example patent of the present invention is further specified.
Fig. 1 is that each valve of oxygen-enriched sintering moves towards control chart.Among the figure:
The oxygen repid cut-off valve
Stopping valve
Flow control valve
Stop check valve
Butterfly valve
Oxygen flow meter
Fig. 2 is a feeding oxygen tube road layout drawing.Pipe 4. chassis skeletons in 1. sintering pallets, 2. sinter machine outer tubes, 3. sinter machines among the figure
Embodiment:
Oxygen enrichment is sent into pipeline towards sinter machine top by the sintering oxygen supply technical process of tight design, and the several discharge pipes by lateral arrangement above sinter machine vertically are blown into sinter bed.Specifically stop to send oxygen to be operating as: before after pipeline purges and to finish oxygen being delivered to 1# oxygen stopping valve, pressure should be 0.2MPa～0.4MPa.Open the 7# butterfly valve.Slowly open the 1# stopping valve, the 6# stop check valve is driven the 2# repid cut-off valve, the gradually for a short time then 4# flow control valve of opening, and calculate oxygen enrichment percentage (X according to compressed air require behind the sintering oxygen enrichment and Rich Oxygen Amount
02) oxygen enrichment percentage: X
02After---be meant oxygen enrichment, the percentage ratio that the oxygen volume content increases in the air blast.
X
02=0.788 * Q (oxygen) ÷ 60/Q (mixing) * 100%
In the formula: Q
(oxygen)----is blended into the industrial oxygen amount in the air blast, m behind the oxygen enrichment
3/ h.
Q
(mixing)----mixed air volume behind the oxygen enrichment, m
3/ min.
The final condition of this calculation formula:
1. Q
(mixing)=Q
(wind)+ Q
(oxygen)
2. do not consider airborne humidity
3. the purity of industrial oxygen: 99.5%, air oxygen level 20.7%.
(t＜when 1h) shutting down, close the 4# flow control valve earlier closes the 2# repid cut-off valve to sinter machine short-term when stopping oxygen, closes the 6# stop check valve again, stops oxygen enrichment.Sinter machine shuts down and (during t 〉=1h), to cut out the 4# flow control valve earlier, to close the 2# repid cut-off valve again, to cut out the 6# stop check valve, to cut out the 1# stopping valve at last, to stop oxygen enrichment.
Claims (3)
1. novel process, a novel method that effectively improves the agglomerate yield and quality by increasing airborne oxygen level, carried out the continuity production of oxygen-enriched sintering, reaches the raising bed thickness, improves agglomerate size composition, reduces the purpose of solid burnup.
2. SINTERING PRODUCTION technology according to claim 1 is characterized in that: use the valve control techniques of oxygen-enriched injection, develop practicable oxygen-enriched sintering and send and stop oxygen valve control scheme.Comprise the nitrogen purge program, send control techniques that oxygen stops oxygen program, oxygen flow etc.
3. SINTERING PRODUCTION technology according to claim 1, the oxygen enrichment percentage in the strict control air calculates oxygen enrichment percentage (X according to compressed air require behind the sintering oxygen enrichment and Rich Oxygen Amount
02)
X
02=0.788 * Q (oxygen) ÷ 60/Q (mixing) * 100%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102284929A CN102061379A (en) | 2009-11-18 | 2009-11-18 | Oxygen-enriched sintering process method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102284929A CN102061379A (en) | 2009-11-18 | 2009-11-18 | Oxygen-enriched sintering process method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102061379A true CN102061379A (en) | 2011-05-18 |
Family
ID=43996884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102284929A Pending CN102061379A (en) | 2009-11-18 | 2009-11-18 | Oxygen-enriched sintering process method |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370008A (en) * | 2015-07-24 | 2017-02-01 | 上海梅山钢铁股份有限公司 | Energy-saving dynamic regulating and control method for oxygen-rich sintering |
| CN108120290A (en) * | 2017-03-31 | 2018-06-05 | 中冶长天国际工程有限责任公司 | A kind of combustion gas blowing device and combustion gas blowing method |
| CN114350937A (en) * | 2021-12-28 | 2022-04-15 | 包头钢铁（集团）有限责任公司 | Method for optimizing quality of sinter |
-
2009
- 2009-11-18 CN CN2009102284929A patent/CN102061379A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106370008A (en) * | 2015-07-24 | 2017-02-01 | 上海梅山钢铁股份有限公司 | Energy-saving dynamic regulating and control method for oxygen-rich sintering |
| CN108120290A (en) * | 2017-03-31 | 2018-06-05 | 中冶长天国际工程有限责任公司 | A kind of combustion gas blowing device and combustion gas blowing method |
| CN108120290B (en) * | 2017-03-31 | 2023-09-29 | 中冶长天国际工程有限责任公司 | Gas injection device and gas injection method |
| CN114350937A (en) * | 2021-12-28 | 2022-04-15 | 包头钢铁（集团）有限责任公司 | Method for optimizing quality of sinter |
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Application publication date: 20110518 |