CN1775970A - Lead blowing-furnace oxygen-rich smelting process - Google Patents
Lead blowing-furnace oxygen-rich smelting process Download PDFInfo
- Publication number
- CN1775970A CN1775970A CN 200510125627 CN200510125627A CN1775970A CN 1775970 A CN1775970 A CN 1775970A CN 200510125627 CN200510125627 CN 200510125627 CN 200510125627 A CN200510125627 A CN 200510125627A CN 1775970 A CN1775970 A CN 1775970A
- Authority
- CN
- China
- Prior art keywords
- oxygen
- storage tank
- furnace
- blast furnace
- smelting process
- 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
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 80
- 239000001301 oxygen Substances 0.000 title claims abstract description 80
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 80
- 238000003723 Smelting Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 19
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to lead blast furnace oxygen enrichment smelting technology that adding oxygen into air supplied to blast furnace by blower fan to improve the oxygen concentration to 20-30%. Thus, the reducing atmosphere of the furnace is improved and the processing quantity is increased. The technology index is sharply increased, and the social and economic benefits are notable.
Description
Technical field
The invention belongs to plumbous technical field of smelting, relate in particular to a kind of lead blowing-furnace oxygen-rich smelting process that in the process of lead blast furnace retailoring lead, adopts.
Background technology
At present, in the process of lead blast furnace retailoring lead, the normal air melting modes that adopt are groped through practice for many years more, and output, index are all stable relatively, and be difficult to have too quantum jump, domestic in the measure that improves the lead blast furnace treatment capacity, the expansion cupola wells that adopt carry out this method that improves treatment capacity with reforming equipment more, the human and material resources that drop into are relatively large, are a kind of great waste actually.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art and provide a kind of and strengthen and improve the retailoring of blast furnace technological process, reach the purpose lead blowing-furnace oxygen-rich smelting process that improves treatment capacity by improving the airborne oxygen concn of stove.
The technical solution used in the present invention is: add oxygen at roots blower in the air that blast furnace is supplied with, make into the airborne oxygen concn of stove and improve 20-30%, improve the stove reducing atmosphere thereby reach, improve the stove treatment capacity.
Adding the oxygen method at roots blower in the air that blast furnace is supplied with is by the oxygen channel connection oxygen storage tank to be arranged at roots blower on the air fed pipeline of blast furnace, oxygen in the oxygen channel and in roots blower the air of stable supplying, send into blast furnace in airduct behind the uniform mixing, oxygen supply pipeline is provided with silicon brass does not have the fuel tap door.
Oxygen storage tank is connected by the oxygen installation of inlet pipe with the oxygen that produces, tensimeter and safety valve are installed on oxygen storage tank, set certain value according to specific requirement, safety valve is opened automatically when pressure is higher than this definite value, oxygen storage tank is connected oxygen channel by escape pipe, also is provided with hand-hole and the wash water valve of making oxygen storage tank maintenance usefulness on oxygen storage tank.
Effective effect of the present invention is: go into the airborne oxygen concn of stove by raising and strengthen and improve the retailoring of blast furnace technological process, reach the raising treatment capacity, treatment capacity is increased substantially, technical indicator is obviously improved, and economic and social benefit is remarkable.
Description of drawings
Fig. 1 is an oxygen storage tank structural representation of the present invention.
Fig. 2 is a blast furnace oxygenation structural representation of the present invention.
Embodiment
As shown in Figure 1, 2, in the air that blast furnace 10 is supplied with, add oxygen, make into the airborne oxygen concn of stove and improve 20-30%, improve the stove reducing atmosphere, improve the stove treatment capacity thereby reach at roots blower 8.Adding the oxygen method at roots blower 8 in the air that blast furnace 10 is supplied with is by the oxygen channel connection oxygen storage tank 11 to be arranged at roots blower 8 on blast furnace 10 air fed pipelines, oxygen in the oxygen channel and in roots blower the air of stable supplying, send into blast furnace 10 in airduct 9 behind the uniform mixing, oxygen supply pipeline is provided with silicon brass does not have fuel tap door 12,13.
Oxygen storage tank 11 is connected by the oxygen installation of inlet pipe 4 with the oxygen that produces, tensimeter 1 and safety valve 5 are installed on oxygen storage tank 11, set certain value according to specific requirement, safety valve 5 is opened automatically when pressure is higher than this definite value, oxygen storage tank 11 is connected oxygen channel by escape pipe 2, also is provided with hand-hole 6 and the wash water valve 7 of making oxygen storage tank maintenance usefulness on oxygen storage tank 11.Oxygen storage tank 11 is installed on the ground by support 3.
Among Fig. 1, oxygen enters in the oxygen storage tank 11 from inlet pipe 4, and the tensimeter set(ting)value is 1.6Mpa, and safety valve 5 is opened automatically when pressure is higher than 1.6Mpa, and the oxygen emptying is to realize that oxygen can stably enter into oxygen channel from escape pipe 2 in the basin.
Among Fig. 2, in oxygen storage tank 3 oxygen of stable supplying and in roots blower 2 fresh air of stable supplying, in airduct 4, send into blast furnace behind the uniform mixing, go into the stove air oxygen concentration and reach 23.5% approximately.
Between blast furnace and oxygen station, increase an oxygen storage tank 11, make the pressure in the jar remain on required value, the oxygen of stable supplying is by in the blast furnace airduct input stove, oxygen concentration brought up to about 23.5%, in order to the carrying out of retailoring process.The supply of oxygen should be carried out after 5 minutes at the roots blower air feed at least, no matter which kind of reason causes the blast furnace blowing-out, before all must be with the valve closes at gas holder place, shutting by-pass valve control after at least 5 minutes, stop air feed again, closing the gas program is to close gas holder early gate 12 earlier, and gas holder late gate 13 is closed in the back.
Implement lead blowing-furnace oxygen-rich smelting process, the treatment capacity of raising stove that can be is by a relatively large margin also improved the correlation technique economic target, but the key point of implementing this technology is the assurance of oxygen concn, the oxygen concn frequent fluctuation not only can not make this technology normally be carried out, and also might cause such as comparatively serious negative impacts such as stove ore deposit unstability, index deteriorations.
Claims (4)
1, a kind of lead blowing-furnace oxygen-rich smelting process, it is characterized in that: in the air that blast furnace (10) is supplied with, add oxygen at roots blower (8), make into the airborne oxygen concn of stove and improve 20-30%, improve the stove reducing atmosphere, improve the stove treatment capacity thereby reach.
2, a kind of lead blowing-furnace oxygen-rich smelting process according to claim 1, it is characterized in that: adding the oxygen method at roots blower (8) in the air that blast furnace (10) is supplied with is by the oxygen channel connection oxygen storage tank (11) to be arranged at roots blower (8) on the air fed pipeline of blast furnace (10), oxygen in the oxygen channel and in roots blower the air of stable supplying, send into blast furnace (10) in airduct (9) behind the uniform mixing, oxygen supply pipeline is provided with silicon brass does not have fuel tap door (12), (13).
3, a kind of lead blowing-furnace oxygen-rich smelting process according to claim 2, it is characterized in that: oxygen storage tank (11) is connected by the oxygen installation of inlet pipe (4) with the oxygen that produces, tensimeter (1) and safety valve (5) are installed on oxygen storage tank (11), set certain value according to specific requirement, safety valve 5 is opened automatically when pressure is higher than this definite value, oxygen storage tank (11) is connected oxygen channel by escape pipe (2), also is provided with hand-hole (6) and the wash water valve (7) of making oxygen storage tank maintenance usefulness on oxygen storage tank (11).
4, a kind of lead blowing-furnace oxygen-rich smelting process according to claim 2 is characterized in that: oxygen storage tank (11) is installed on the ground by support (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101256270A CN100491550C (en) | 2005-12-02 | 2005-12-02 | Oxygen-enriched smelting process of lead blast furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101256270A CN100491550C (en) | 2005-12-02 | 2005-12-02 | Oxygen-enriched smelting process of lead blast furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1775970A true CN1775970A (en) | 2006-05-24 |
| CN100491550C CN100491550C (en) | 2009-05-27 |
Family
ID=36765688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101256270A Expired - Fee Related CN100491550C (en) | 2005-12-02 | 2005-12-02 | Oxygen-enriched smelting process of lead blast furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100491550C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776304A (en) * | 2012-08-27 | 2012-11-14 | 中冶赛迪工程技术股份有限公司 | Blast oxygen enrichment energy-saving technology and device for blast furnace |
| CN107201444A (en) * | 2017-07-11 | 2017-09-26 | 云汇环保科技南通有限公司 | A kind of blowing-furnace oxygen-rich smelting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4115109A (en) * | 1976-04-21 | 1978-09-19 | N L Industries, Inc. | Secondary lead smelting process |
-
2005
- 2005-12-02 CN CNB2005101256270A patent/CN100491550C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776304A (en) * | 2012-08-27 | 2012-11-14 | 中冶赛迪工程技术股份有限公司 | Blast oxygen enrichment energy-saving technology and device for blast furnace |
| CN107201444A (en) * | 2017-07-11 | 2017-09-26 | 云汇环保科技南通有限公司 | A kind of blowing-furnace oxygen-rich smelting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100491550C (en) | 2009-05-27 |
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| 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: 20090527 Termination date: 20141202 |
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| EXPY | Termination of patent right or utility model |