CN108359765A - A kind of blowing method for purging converter mouth dry slag - Google Patents
A kind of blowing method for purging converter mouth dry slag Download PDFInfo
- Publication number
- CN108359765A CN108359765A CN201810293123.7A CN201810293123A CN108359765A CN 108359765 A CN108359765 A CN 108359765A CN 201810293123 A CN201810293123 A CN 201810293123A CN 108359765 A CN108359765 A CN 108359765A
- Authority
- CN
- China
- Prior art keywords
- fire door
- dry slag
- oxygen
- oxygen rifle
- thickness
- 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.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
Abstract
The present invention relates to a kind of blowing methods for purging converter mouth dry slag comprising：Step 1) determines the diameter dimension and fire door dry slag thickness of fire door, judges whether to need to purge；It is then purged, and go to step 2) when fire door dry slag thickness is 20 30cm if furnace port diameter is less than 2.5m；Oxygen rifle is placed in the top of converter mouth by external lifting device by step 2), sets automatic blowing pattern in the oxygen rifle, oxygen rifle pumps automatically, and fire door dry slag is periodically purged by the oxygen jet of oxygen rifle；After step 3) purges, the thickness and furnace port diameter of fire door dry slag are checked by staff, according to the diameter dimension of fire door and fire door dry slag thickness, judge whether to need to be purged again；If furnace port diameter is less than 2.5m, when fire door dry slag thickness is 20 30cm, then repeatedly step 1) step 2), is purged again.
Description
Technical field
The invention belongs to converter steeling technology fields, and in particular to a kind of purging side for purging converter mouth dry slag
Method.
Background technology
Splash is the inevitable problem of pneumatic steelmaking, and especially splash dry slag is adhered to converter mouth, makes converter mouth
Diameter constantly reduce, seriously affect converter hot metal charging plus the operations such as steel scrap be smoothed out；Meanwhile the diameter contracting of converter mouth
It is small, converter gas discharge is influenced, the generation of splash has been further exacerbated by.
Currently, major steel plant clear up the dry slag of converter mouth using two ways, both modes include：Using tearing open
Stove vehicle clears up converter mouth dry slag and purges converter mouth dry slag using oxygen rifle.But fire door dry slag is cleared up using stove vehicle is torn open, it adopts
It is cleared up with manual, time-consuming longer influence rhythm of production, and fire door temperature is higher, is unable to long working；And oxygen rifle is used, lead to
Over-blowing oxygen purges converter mouth dry slag, easy to operate, with obvious effects, but by manually controlling oxygen rifle, due to oxygen
The rifle position improper use of rifle is easy to happen burning leakage flue phenomenon, and there are serious security risks.
Invention content
It is an object of the present invention to solve the existing method for purging converter mouth dry slag, there are drawbacks described above, this hairs
It is bright to propose a kind of blowing method for purging converter mouth dry slag, it can quickly clean, remove converter mouth dry slag, stablize
Converter operates, safe and efficient.The blowing method includes：
Step 1) determines the diameter dimension and fire door dry slag thickness of fire door, judges whether to need to purge；If furnace port diameter
It is then purged, and go to step 2) when fire door dry slag thickness is 20-30cm less than 2.5m；
Oxygen rifle is placed in the top of converter mouth by external lifting device by step 2), is set in the oxygen rifle and is blown automatically
Pattern is swept, oxygen rifle pumps automatically, and fire door dry slag is periodically purged by the oxygen jet of oxygen rifle；
After step 3) purges, the thickness and furnace port diameter of fire door dry slag are checked by staff, according to the straight of fire door
Diameter size and fire door dry slag thickness judge whether to need to be purged again；If furnace port diameter is less than 2.5m, fire door dry slag is thick
When degree is 20-30cm, then repeatedly step 1)-step 2), is purged again.
In the above-mentioned technical solutions, encoder is installed in the oxygen rifle, is used for automatic collection oxygen lance position, setting is adjusted
Whole purge time.
In the above-mentioned technical solutions, the automatic blowing pattern of the step 2) includes 4 stages：
First stage, set purge time as 10-15s, oxygen lance position 750cm；
Second stage, sets purge time as 10-15s, oxygen lance position 730cm；
Phase III, set purge time as 10-15s, oxygen lance position 750cm；
Fourth stage, sets purge time as 5-10s, oxygen lance position 700cm.
It follows that according to the numerical value of oxygen lance position, automatic blowing pattern may be summarized to be the period of two reciprocating motions,
Oxygen rifle is back and forth purged in the top of converter mouth, has prevented the security risk for burning leakage flue, and purging fire door dry slag clearly, takes
Obtained significant cleaning effect.
In the above-mentioned technical solutions, in the step 3), staff is checking furnace port diameter and when fire door dry slag thickness,
According to purging fire door dry slag number and purging effect come set-up procedure 2) in automatic blowing pattern in each stage blow
Flyback time and oxygen lance position.
The advantage of the invention is that：
The blowing method provided through the invention can meet converter in daily production process, to furnace port diameter size
Requirement, solve fire door and be stained with a large amount of dry slags, furnace port diameter technical problem less than normal, avoid manually purging fire door dry slag
When human factor burn leakage flue security risk.
Description of the drawings
Fig. 1 is the knot that a kind of oxygen rifle of blowing method for purging converter mouth dry slag of the present invention is located above fire door
Structure schematic diagram；
Fig. 2 is the structure that a kind of oxygen rifle of blowing method for purging converter mouth dry slag of the present invention is located in fire door
Schematic diagram.
Specific implementation mode
The present invention proposes a kind of blowing method for purging converter mouth dry slag, can quickly clean, remove converter
Fire door dry slag stablizes converter operation, safe and efficient.The blowing method includes：
Step 1) determines the diameter dimension and fire door dry slag thickness of fire door, judges whether to need to purge；If furnace port diameter
It is then purged, and go to step 2) when fire door dry slag thickness is 20-30cm less than 2.5m；
Oxygen rifle as shown in Figure 1, is placed in the top of converter mouth by external lifting device, at this point, oxygen rifle by step 2)
Rifle position is 750cm；Automatic blowing pattern is set in the oxygen rifle, oxygen rifle pumps automatically, passes through the oxygen of oxygen rifle
Gas jet stream periodically purges fire door dry slag；
After step 3) purges, the thickness and furnace port diameter of fire door dry slag are checked by staff, according to the straight of fire door
Diameter size and fire door dry slag thickness judge whether to need to be purged again；If furnace port diameter is less than 2.5m, fire door dry slag is thick
When degree is 20-30cm, then repeatedly step 1)-step 2), is purged again；Repeatedly reciprocal purging, can be effectively by fire door dry slag
Purging is clean.
In the above-mentioned technical solutions, encoder is installed in the oxygen rifle, is used for automatic collection oxygen lance position, setting is adjusted
Whole purge time.
In the above-mentioned technical solutions, as illustrated in fig. 1 and 2, the automatic blowing pattern of the step 2) includes 4 stages：
First stage, set purge time as 10-15s, oxygen lance position 750cm；
Second stage, sets purge time as 10-15s, oxygen lance position 730cm；
Phase III, set purge time as 10-15s, oxygen lance position 750cm；
Fourth stage, sets purge time as 5-10s, oxygen lance position 700cm.
It follows that according to the numerical value of oxygen lance position, automatic blowing pattern may be summarized to be the period of two reciprocating motions,
Oxygen rifle is back and forth purged in the top of converter mouth, has prevented the security risk for burning leakage flue, and purging fire door dry slag clearly, takes
Obtained significant cleaning effect.
In the above-mentioned technical solutions, in the step 3), staff is checking furnace port diameter and when fire door dry slag thickness,
According to purging fire door dry slag number and purging effect come set-up procedure 2) in automatic blowing pattern in each stage blow
Flyback time and oxygen lance position.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention in detail according to embodiment, it will be understood by those of ordinary skill in the art that, to the technical side of the present invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Right in.
Claims (3)
1. a kind of blowing method for purging converter mouth dry slag, which is characterized in that it includes：
Step 1) determines the diameter dimension and fire door dry slag thickness of fire door, judges whether to need to purge；If furnace port diameter is less than
2.5m fire door dry slag thickness is 20-30cm, then purged, and go to step 2)；
Oxygen rifle is placed in the top of converter mouth by external lifting device by step 2), and automatic blowing mould is set in the oxygen rifle
Formula, oxygen rifle pump automatically, and fire door dry slag is periodically purged by the oxygen jet of oxygen rifle；
After step 3) purges, the thickness and furnace port diameter of fire door dry slag are checked by staff, according to the diameter ruler of fire door
Very little and fire door dry slag thickness judges whether to need to be purged again；If furnace port diameter is less than 2.5m, fire door dry slag thickness is
When 20-30cm, then repeatedly step 1)-step 2), is purged again.
2. blowing method according to claim 1, which is characterized in that encoder is equipped in the oxygen rifle, for automatic
Acquire oxygen lance position, setting, adjustment purge time.
3. blowing method according to claim 1, which is characterized in that the automatic blowing pattern of the step 2) includes 4
Stage：
First stage, set purge time as 10-15s, oxygen lance position 750cm；
Second stage, sets purge time as 10-15s, oxygen lance position 730cm；
Phase III, set purge time as 10-15s, oxygen lance position 750cm；
Fourth stage, sets purge time as 5-10s, oxygen lance position 700cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810293123.7A CN108359765A (en) | 2018-03-30 | 2018-03-30 | A kind of blowing method for purging converter mouth dry slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810293123.7A CN108359765A (en) | 2018-03-30 | 2018-03-30 | A kind of blowing method for purging converter mouth dry slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108359765A true CN108359765A (en) | 2018-08-03 |
Family
ID=63002117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810293123.7A Pending CN108359765A (en) | 2018-03-30 | 2018-03-30 | A kind of blowing method for purging converter mouth dry slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108359765A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576445A (en) * | 2018-11-27 | 2019-04-05 | 唐山钢铁集团有限责任公司 | The method for cleaning of RH lower channel and alloy feed opening dross |
| CN113981170A (en) * | 2021-10-22 | 2022-01-28 | 山信软件股份有限公司 | Converter mouth deslagging method |
| CN114107597A (en) * | 2021-11-30 | 2022-03-01 | 广东韶钢松山股份有限公司 | Converter rinsing method |
| CN114317879A (en) * | 2022-01-26 | 2022-04-12 | 南京钢铁股份有限公司 | Method for controlling mouth-melting oxygen lance |
| CN115261560A (en) * | 2022-08-02 | 2022-11-01 | 广东韶钢松山股份有限公司 | LF refining method of CH1T ultra-low carbon cold forging steel |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995405A (en) * | 2006-12-28 | 2007-07-11 | 鞍钢股份有限公司 | Processing method of combined blowing from top and bottom for maintaining converter and removing cohered steel slag |
| CN105256092A (en) * | 2015-10-26 | 2016-01-20 | 攀钢集团攀枝花钢钒有限公司 | Treating method for bonding substances at converter opening of semi-steel smelting converter |
| CN106367557A (en) * | 2016-09-09 | 2017-02-01 | 河钢股份有限公司邯郸分公司 | Method for treating converter mouth slag through oxygen blowing by oxygen lance |
-
2018
- 2018-03-30 CN CN201810293123.7A patent/CN108359765A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1995405A (en) * | 2006-12-28 | 2007-07-11 | 鞍钢股份有限公司 | Processing method of combined blowing from top and bottom for maintaining converter and removing cohered steel slag |
| CN105256092A (en) * | 2015-10-26 | 2016-01-20 | 攀钢集团攀枝花钢钒有限公司 | Treating method for bonding substances at converter opening of semi-steel smelting converter |
| CN106367557A (en) * | 2016-09-09 | 2017-02-01 | 河钢股份有限公司邯郸分公司 | Method for treating converter mouth slag through oxygen blowing by oxygen lance |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109576445A (en) * | 2018-11-27 | 2019-04-05 | 唐山钢铁集团有限责任公司 | The method for cleaning of RH lower channel and alloy feed opening dross |
| CN113981170A (en) * | 2021-10-22 | 2022-01-28 | 山信软件股份有限公司 | Converter mouth deslagging method |
| CN114107597A (en) * | 2021-11-30 | 2022-03-01 | 广东韶钢松山股份有限公司 | Converter rinsing method |
| CN114317879A (en) * | 2022-01-26 | 2022-04-12 | 南京钢铁股份有限公司 | Method for controlling mouth-melting oxygen lance |
| CN115261560A (en) * | 2022-08-02 | 2022-11-01 | 广东韶钢松山股份有限公司 | LF refining method of CH1T ultra-low carbon cold forging steel |
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| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180803 |
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| RJ01 | Rejection of invention patent application after publication |