CN2218747Y - Oxygen enriching lance for blowing and burning blast furnace iron mouth - Google Patents
Oxygen enriching lance for blowing and burning blast furnace iron mouth Download PDFInfo
- Publication number
- CN2218747Y CN2218747Y CN 94231436 CN94231436U CN2218747Y CN 2218747 Y CN2218747 Y CN 2218747Y CN 94231436 CN94231436 CN 94231436 CN 94231436 U CN94231436 U CN 94231436U CN 2218747 Y CN2218747 Y CN 2218747Y
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- CN
- China
- Prior art keywords
- lance
- sight glass
- rifle body
- tube head
- oxygen
- 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.)
- Expired - Lifetime
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Abstract
The utility model relates to an oxygen enriching lance for blowing and burning blast furnace iron mouth. The lance body is single tube straight-way type, and is divided into front and back two segments. The anterior part of the front segment of the lance body is knotted a high-alumina refractory layer peripherally, the surface is wounded with a protecting layer, and the rear part is provided with a flange. The anterior part if the back segment is provided with a flange, the lance body section of the rear part is provided with endoscope holes, the end is provided with a tube head, the side face is provided with an oxygen and air quick joints which are respectively connected with the oxygen and air pipes, and the flanges of the two segments of the lance bodies are butt jointed together. The utility model has the advantages of simple structure, convenient operation, and high safety.
Description
The utility model relates to a kind of blast furnace and taps a blast furnace first with blowing and burning blast furnace iron mouth oxygen enriching lance.
At present, the domestic method that generally adopts the oxygen lance pure oxygen to blow burning iron mouth is tapped a blast furnace first.This method severe operational environment, labour intensity is big, and dangerous big, the consumption of oxygen and oxygen lance is also big.Molten iron does not flow out for a long time, and slag line is risen, even is raised to air plane and the air port burnt out causes the accident.The external employing from bustle pipe drawn the method that a hot-air channel blows the burning iron notch.This apparatus and process complexity, floor space is big, is not suitable for China blast furnace production scene and uses.
The oxygen enriching lance that the purpose of this utility model provides coke layer in a kind of blowing and burning blast furnace iron mouth burns coke layer, makes molten iron flow iron notch smoothly, guarantees blast furnace production direct motion.
For achieving the above object, the utility model is realized by following scheme:
A kind of blowing and burning blast furnace iron mouth oxygen enriching lance, it is characterized in that oxygen enriching lance is a single tube through type rifle body, divide two sections of front and back, the peripheral knotting of leading portion rifle body front end high alumina refractories layer, the rear end is provided with flange, back segment rifle body rear end is provided with sight glass hole and tube head, the tube head inboard is provided with screw thread and is connected with rifle body rearward end outside screw coupling, sight glass is housed on the tube head, leading section is provided with flange, the rifle body side surface is provided with oxygen and air rapid-acting coupling, is connected with blast main with oxygen hose respectively, and two sections rifle body flange butt joints are integral.
Characteristics of the present utility model are to make simply, and are easy to operate, safe and reliable, and observation stove internal combustion situation is directly perceived, and regulation and control oxygen and air pressure and flow are easy, and molten iron stream iron notch is smooth.
Fig. 1 is a blowing and burning blast furnace iron mouth oxygen enriching lance structural representation.
Fig. 2 is a gland tube head structural representation.
Accompanying drawings provides following embodiment 1:
As can be seen from Figure 1; oxygen enriching lance is a single tube through type rifle body; divide two sections of front and back; the peripheral knotting of leading portion rifle body (3) front end high alumina refractories layer (1); extend into iron mouth inside to guarantee that the rifle body is not by scaling loss; refractory masses (1) periphery is twined refractory protection (2), and the rear end is provided with flange (4).Back segment rifle body (3) front end is provided with flange (4), the side is provided with oxygen rapid-acting coupling (5) and air rapid-acting coupling (6), be connected with airline with oxygen respectively, tube head (10) inboard is provided with screw thread and is connected with rifle body rearward end outside screw coupling, and rearward end is provided with sight glass hole (7), inlays sight glass sheet (8) in the tube head (10), there is rubber seal (9) sight glass sheet (8) both sides, there is through hole (11) the tube head end, and through hole (11) is isometrical with sight glass hole (7), in order to observe the combustion case in the iron mouth.Can according to circumstances remove rifle when slag iron gets off taps a blast furnace.Two sections rifle body and function flanges (4) are tightly connected, and make the rifle body form passage, and oxygen and air spray in the stove after passage mixes, and blow to burn cold coke layer and make it to burn and form the Tie Tong road.
Blow and oxygen enriching lance imbedded the iron mouth in preceding 4 hours, the coke burning of sending oxygen-enriched combustion-supporting gas to make to ignite.Still keep after the air-supply to blow and burn iron one's intention as revealed in what one says amount, suitably improve oxygen enrichment percentage and total blast volume, improve inner coke velocity.Blew back about 2 hours, originally always very stable flow rate meter float begin to occur fluctuation, show that the molten iron passage opens, continue to blow and burnt about 1 hour, withdraw from oxygen enriching lance.When removing rifle, stop to send oxygen earlier, continue blowing cold air, pour in the oxygen enriching lance to avoid molten iron, molten iron flows out from the iron mouth immediately when removing rifle.
Embodiment 2:
Fig. 2 provides the another kind of structural representation of gland tube head, tube head end seat (12) is a groove shape, medial surface has screw thread, and concave bottom has sight glass hole (7), and sight glass sheet (8) both sides are provided with rubber seal (9), the end is provided with gland (14), the gland outer side has screw thread to be connected with groove shape medial surface screw thread coupling, and the gland centre is provided with through hole (13), tightens gland (14), can sight glass sheet (8) is fixing, end seat (12) is integrally welded with rifle body (3).Other are with embodiment 1.
Claims (3)
1, a kind of blowing and burning blast furnace iron mouth oxygen enriching lance, it is characterized in that oxygen enriching lance is a single tube through type rifle body, divide two sections of front and back, the peripheral knotting of leading portion rifle body front end high alumina refractories layer, the rear end is provided with flange, back segment rifle body rear end is provided with sight glass hole and tube head, the tube head inboard is provided with screw thread and is connected with rifle body rearward end outside screw coupling, sight glass is housed on the tube head, leading section is provided with flange, the rifle body side surface is provided with oxygen and air rapid-acting coupling, is connected with blast main with oxygen hose respectively, and two sections rifle body flange butt joints are integral.
2, blowing and burning blast furnace iron mouth oxygen enriching lance according to claim 1, it is characterized in that tube head (10) inboard is provided with screw thread and is connected with rifle body rearward end outside screw coupling, rearward end is provided with sight glass hole (7), inlay sight glass sheet (8) in the tube head (10), there is rubber seal (9) sight glass sheet (8) both sides, there is through hole (11) the tube head end, and through hole (11) is isometrical with sight glass hole (7).
3, blowing and burning blast furnace iron mouth oxygen enriching lance according to claim 1, it is characterized in that tube head end seat (12) is groove shape, medial surface has screw thread, and concave bottom has sight glass hole (7), and sight glass sheet (8) both sides are provided with rubber seal (9), the end is provided with gland (14), the gland outer side has screw thread to be connected with groove shape medial surface screw thread coupling, and the gland centre is provided with through hole (13), tightens gland (14), can sight glass sheet (8) is fixing, end seat (12) is integrally welded with rifle body (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231436 CN2218747Y (en) | 1994-12-07 | 1994-12-07 | Oxygen enriching lance for blowing and burning blast furnace iron mouth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94231436 CN2218747Y (en) | 1994-12-07 | 1994-12-07 | Oxygen enriching lance for blowing and burning blast furnace iron mouth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2218747Y true CN2218747Y (en) | 1996-01-31 |
Family
ID=33843273
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94231436 Expired - Lifetime CN2218747Y (en) | 1994-12-07 | 1994-12-07 | Oxygen enriching lance for blowing and burning blast furnace iron mouth |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2218747Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709342B (en) * | 2009-12-03 | 2012-09-05 | 长兴云峰炉料有限公司 | Oxygen lance for blast furnaces |
| CN103911471B (en) * | 2014-03-31 | 2016-01-20 | 江苏永钢集团有限公司 | Iron mouth oxygen gun apparatus is burnt before a kind of State of Blast Furnace |
| CN105586459A (en) * | 2016-03-03 | 2016-05-18 | 重庆钢铁(集团)有限责任公司 | Cooling protection structure for oxygen supply pipe of iron notch burn-through device |
| CN105586460A (en) * | 2016-03-03 | 2016-05-18 | 重庆钢铁(集团)有限责任公司 | Burning iron notch section structure for blast furnace iron notch burn-through device |
| CN105671230A (en) * | 2016-03-03 | 2016-06-15 | 重庆钢铁(集团)有限责任公司 | Device for communicating air ports with iron notches of iron-smelting blast furnace by burning |
| CN108059322A (en) * | 2017-11-30 | 2018-05-22 | 彩虹（合肥）液晶玻璃有限公司 | A kind of kiln fires rifle structure |
-
1994
- 1994-12-07 CN CN 94231436 patent/CN2218747Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709342B (en) * | 2009-12-03 | 2012-09-05 | 长兴云峰炉料有限公司 | Oxygen lance for blast furnaces |
| CN103911471B (en) * | 2014-03-31 | 2016-01-20 | 江苏永钢集团有限公司 | Iron mouth oxygen gun apparatus is burnt before a kind of State of Blast Furnace |
| CN105586459A (en) * | 2016-03-03 | 2016-05-18 | 重庆钢铁(集团)有限责任公司 | Cooling protection structure for oxygen supply pipe of iron notch burn-through device |
| CN105586460A (en) * | 2016-03-03 | 2016-05-18 | 重庆钢铁(集团)有限责任公司 | Burning iron notch section structure for blast furnace iron notch burn-through device |
| CN105671230A (en) * | 2016-03-03 | 2016-06-15 | 重庆钢铁(集团)有限责任公司 | Device for communicating air ports with iron notches of iron-smelting blast furnace by burning |
| CN108059322A (en) * | 2017-11-30 | 2018-05-22 | 彩虹（合肥）液晶玻璃有限公司 | A kind of kiln fires rifle structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |