CN2095201U - Premixing type coal oxygen mine fusion agent spray gun - Google Patents
Premixing type coal oxygen mine fusion agent spray gun Download PDFInfo
- Publication number
- CN2095201U CN2095201U CN 91216746 CN91216746U CN2095201U CN 2095201 U CN2095201 U CN 2095201U CN 91216746 CN91216746 CN 91216746 CN 91216746 U CN91216746 U CN 91216746U CN 2095201 U CN2095201 U CN 2095201U
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- spray gun
- nozzle
- pipe
- oxygen
- outer nozzle
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Abstract
The utility model discloses a premixing type coal oxygen mineral fluxing agent spray gun comprising an inner spray pipe, an outer spray pipe, a connection head of an outer spray pipe inlet, etc. The utility model is characterized in that a premixing pipe which can homogeneously mix coal powder, mineral powder, fluxing agents or other mixed powder materials with the oxygen is arranged at a nozzle of the utility model; the premixing pipe is a high temperature resistant ceramic pipe; the inner spray pipe is longer than the outer spray pipe to extend into the premixing pipe; the extending length can be regulated according to requirements; the effect of protecting the nozzle can be realized without using a cooling medium by the spray gun. The utility model is matched with an iron bath furnace body to realize the purposes of coal gas preparation, fusing, reduction, and molten iron refining. A top blowing oxygen gun is matched to realize the purpose that the secondary combustion of coal gas improves iron bath thermal efficiency.
Description
The utility model relates to a kind of and the matching used spray gun of iron liquid furnace body, particularly relates to a kind of premixed coal oxygen mine fusion agent spray gun, can be used for melting and reducing, molten iron refining, converter steelmaking, gas preparation etc., belongs to the chemical industry metallurgical field.
Since the sixties in this century, many emtallurgy research workers of countries in the world are devoted to fused reduction iron-smelting Research on New and development always, promptly attempt directly to smelt the pig iron or half steel with oxygen, coal, ore, particularly over past ten years, the exploitation of this new technology there has been great breakthrough.
It is one of formant operation of melting and reducing that iron is bathed coal oxygen injection gas making, and its spray gun structure and performance are the keys of this unit operation.This type of spray gun generally has two kinds, promptly is installed in the immersion spray gun and the non-immersion spray gun that is installed in furnace roof of furnace bottom or furnace side.For example the coal oxygen injection lance of NKK (NKK STEEL CORP.) invention belongs to the latter, and the coaloust-oxygen gun of Sumitomo Metal Industries (SUMQ) invention belongs to the former.From the effect of gas making and melting and reducing, the former obviously is better than the latter, but the former is harsh to using operating parameters and spray gun and bottom refractory to require.
From end coal powder injection oxygen (ore deposit) the spray gun patent of present countries in the world invention, bathe coal oxygen mine with the iron of the most approaching SUMITOMO CHEMICAL metal (SUMQ) invention of the present invention and spray gas making and spray coaloust-oxygen gun with the end in the smelting reduction process (patent No. 86229175/08635).The characteristics of this spray gun are that the spray gun inner nozzle is the coal dust runner, with the concentric circumferential weld of inner nozzle be the oxygen runner, oxygen outlet is mutually neat with discharge, as shown in Figure 1.This spray gun only is suitable for carrying out coal-oxygen injection; breeze sprays in the stove from another top rifle; and can not carry out the coal oxygen mine winding-up; and owing to caused local temperature too high at nozzle oxygen outlet place's oxygen flow and molten iron generation exothermic oxidation reaction; therefore need spray into hydrocarbon polymer simultaneously as the nozzle guard refrigerant; and the refractory materials that needs special substance replaces near the common refractory of the furnace lining of nozzle; however; nozzle and on every side furnace lining still suffer scaling loss, thereby the life-span of this spray gun is lower.Because breeze is to spray into the upper of furnace body cavity by other top rifle, so the reduction rate of breeze is also slow.
The purpose of this utility model is in order to overcome the shortcoming that above-mentioned spray gun exists; designed and only just can carry out the multiple powder of coal-oxygen-flux and jet simultaneously by end rifle; and do not need refrigerant protection nozzle and special refractory, and can accelerate the long premixed coal oxygen mine fusion agent spray gun of a kind of life-span of the reduction rate of breeze.
A kind of premixed coal oxygen mine fusion agent spray gun of the present utility model, comprise parts such as inner nozzle, outer nozzle, outer nozzle inlet union, be characterized in that this spray gun is equipped with at the nozzle place coal dust, breeze, flux or its mixed powder and the uniform premix barrel of oxygen mix, premix barrel is the refractory ceramics pipe, high-temperature ceramic is connected with outer nozzle by screw thread, or closely be nested on the outer nozzle, inner nozzle is longer than outer nozzle and is stretched in the premix barrel, and can regulate built-in length as required.The inner nozzle of this spray gun is the oxygen runner, and outer nozzle is coal dust, breeze, flux or its mixed powder runner with concentric circumferential weld between the inner nozzle, and the outer nozzle inlet union is the powder import that enters concentric circumferential weld, and it is communicated with the outer nozzle welding.
The setting of premix barrel is one of key of this spray gun.Its effect has two, one, and it can make coal oxygen enter molten iron more equably earlier after mixing, thereby improves reacting dynamics condition; The 2nd, it has played protection nozzle and the effect of refractory materials on every side thereof.Because the coal dust runner is in the outside of oxygen runner, thereby just can play nozzle and the cooling protection effect of refractory materials on every side thereof by the pyrolysis heat absorption and the refractory ceramics pipe of coal dust.So this spray gun does not need the refrigerant of jetting, also bottom refractory that need not be special.
Specifically describe the utility model below with reference to accompanying drawing.
Fig. 1. be original spray gun structure synoptic diagram.
Fig. 2. be the structural representation of the utility model " premixed coal oxygen mine fusion agent spray gun ".
Fig. 2 can be used as an embodiment of the present utility model.As seen from the figure, spray gun of the present utility model is made up of inner nozzle (1), outer nozzle (2), outer nozzle inlet union (3), sealing gland (4), sealing plug (5), premix barrel parts such as (6).Inner nozzle stretches into a part in the premix barrel, and the not zone between the end of the not end of inner nozzle (1) and premix barrel (6) is the premix section, and the length of visible premix section can be adjusted by the inner nozzle built-in length.This spray gun is a double flow duct, oxygen and powder respectively never the homogeneous turbulence road spray into reactor.Inner nozzle (1) is the oxygen runner, and inner nozzle (1) is coal dust, breeze, flux or its mixed powder runner with concentric circumferential weld between the outer nozzle (2).The powder material enters concentric circumferential weld from outer nozzle inlet union (3), and oxygen enters from inner nozzle (1) air inlet oral area.Here needing ben is that oxygen runner and powder runner are not interchangeable, otherwise does not reach the purpose of protection nozzle.Premix barrel (6) is the refractory ceramics pipe, and high-temperature ceramic can be Al
2O
3, material pipe such as MgO, CaO, ZrO; Sealing plug (5) material is a silicon rubber; The material of the utility model spray gun rest part is common gapless stainless steel tube.Premix barrel (6) is connected with outer nozzle (2) by screw thread, perhaps closely is nested on the outer nozzle (2).Sealing gland (4) and sealing plug (5) play the effect of sealed gas on the one hand, by extruding inner nozzle (1) and outer nozzle (2) are tightly connected, and also are convenient to dismounting and change inner nozzle (1) on the other hand or regulate the premix segment length.Outer nozzle inlet union (3) and outer nozzle (2) are by being welded to connect.
During the supporting use of spray gun and iron liquid furnace body, knotting get final product in furnace lining, for firmly solid, preferably gun body and furnace body outer wall are got up with bolted, and during tamped lining, surperficial equal being advisable of spray gun premix section termination and furnace bottom.
The size of spray gun can with joining the iron liquid furnace body increase increase.Usually, the length of rifle is greater than the thickness of furnace bottom, outer nozzle (2) internal diameter is greater than 10mm, inner nozzle (1) internal diameter is greater than 5mm, premix barrel (6) internal diameter equals or is slightly larger than the outer nozzle internal diameter, its length is 20～100mm, and inner nozzle (1) stretches into premix barrel one segment distance, and the angle between outer nozzle inlet union (3) medullary ray and inner nozzle (1) medullary ray is 120～150 °.
Spray gun of the present utility model has been compared tangible advantage and effect with original spray gun.This spray gun is owing to be provided with premix barrel; it can make powder and oxygen enter molten iron more equably earlier after mixed; improve reacting dynamics condition; be coal dust pyrolysis and gasification rapidly; breeze and flux than even dispersion spray into molten iron; simultaneously because the rapid pyrolysis heat absorption of coal dust, thus played the protection nozzle and around the effect of refractory materials, this spray gun do not need to jet refrigerant and special bottom refractory.The experiment proved that the spray gun use properties is good, the life-span is longer, the life-span can stably be carried out the reducing gas of melting and reducing and preparation various requirement composition greater than lining life.
This spray gun and the supporting use of iron liquid furnace body can be realized gas making, melting and reducing, molten iron purified purpose, are equipped with top blow oxygen lance, can realize that also the coal gas secondary combustion improves the purpose that iron is bathed thermo-efficiency.
For example one of spray gun of our making is with Al
2O
3Pipe is as premix barrel (6), and other parts are raw material with the stainless steel tube, and the spray gun size is: inner nozzle (1) internal diameter 5mm, wall thickness 2mm; Outer nozzle (2) internal diameter 16mm, wall thickness 2mm; Premix barrel (6) length 80mm, internal diameter 16mm, wall thickness 4mm; Inner nozzle (1) stretches into premix (6) pipe 30mm; The spray gun total length is 500mm; Outer nozzle inlet union (3) medullary ray and inner nozzle (1) medullary ray angle are 120 °, and long is 30mm, and interior external diameter is respectively 8mm, 12mm.By method recited above each parts is coupled together.This spray gun is installed on 0.1 ton of iron liquid furnace, we have carried out the iron bath--and coal oxygen mine sprays gas making and melting and reducing test, each test duration is about 4 hours, accumulative total is tested hundreds of times, the result shows that the spray gun use properties is good, life-span can stably prepare the purpose of the reductibility coal gas and the realization prereduction iron ore fused reduction iron-smelting of various requirement composition greater than body of heater furnace lining bulk lifetime in iron is bathed.
Claims (3)
1, a kind of and matching used spray gun of iron liquid furnace body, comprise parts such as inner nozzle, outer nozzle, outer nozzle inlet union, it is characterized in that this spray gun is equipped with at the nozzle place of spray gun coal dust, breeze, flux or its mixed powder and the mixed uniform premix barrel of oxygen, premix barrel is the refractory ceramics pipe, high-temperature ceramic is connected with outer nozzle by screw thread or is nested on the outer nozzle, inner nozzle is longer than outer nozzle and is stretched in the premix barrel, and scalable to regulate the premix segment length.
2,, it is characterized in that said high-temperature ceramic is Al according to the described spray gun of claim 1
2O
3, material pipe such as MgO, CaO or ZrO.
3, according to claim 1 or 2 described spray guns, it is characterized in that the pyroceramic bore equals or is slightly larger than the outer nozzle internal diameter, its length is 20～100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91216746 CN2095201U (en) | 1991-06-29 | 1991-06-29 | Premixing type coal oxygen mine fusion agent spray gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91216746 CN2095201U (en) | 1991-06-29 | 1991-06-29 | Premixing type coal oxygen mine fusion agent spray gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2095201U true CN2095201U (en) | 1992-02-05 |
Family
ID=50348616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91216746 Withdrawn CN2095201U (en) | 1991-06-29 | 1991-06-29 | Premixing type coal oxygen mine fusion agent spray gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2095201U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912831A (en) * | 2010-08-17 | 2010-12-15 | 陈志刚 | Multifunctional shower nozzle |
| CN101961699A (en) * | 2010-09-15 | 2011-02-02 | 中国恩菲工程技术有限公司 | Spray gun control method |
| CN102476080A (en) * | 2010-11-29 | 2012-05-30 | 中核建中核燃料元件有限公司 | Nozzle of conversion and reduction furnace and tools for machining same |
| CN102703734A (en) * | 2012-06-18 | 2012-10-03 | 中国恩菲工程技术有限公司 | Top-blown smelting equipment |
| CN104548433A (en) * | 2015-01-20 | 2015-04-29 | 晏子俊 | High-pressure dried carbon dioxide powder fire extinguisher |
| CN107503860A (en) * | 2017-07-03 | 2017-12-22 | 芜湖市海联机械设备有限公司 | A kind of high temperature resistant jet pipe |
| CN108246089A (en) * | 2018-03-14 | 2018-07-06 | 中国华电科工集团有限公司 | A kind of denitrating flue gas urea liquid spray gun |
| CN110567280A (en) * | 2019-09-04 | 2019-12-13 | 中国恩菲工程技术有限公司 | oxidation-reduction gun and oxidation-reduction furnace with same |
-
1991
- 1991-06-29 CN CN 91216746 patent/CN2095201U/en not_active Withdrawn
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101912831A (en) * | 2010-08-17 | 2010-12-15 | 陈志刚 | Multifunctional shower nozzle |
| CN101912831B (en) * | 2010-08-17 | 2012-02-15 | 陈志刚 | Multifunctional shower nozzle |
| CN101961699A (en) * | 2010-09-15 | 2011-02-02 | 中国恩菲工程技术有限公司 | Spray gun control method |
| CN101961699B (en) * | 2010-09-15 | 2012-08-22 | 中国恩菲工程技术有限公司 | Spray gun control method |
| CN102476080A (en) * | 2010-11-29 | 2012-05-30 | 中核建中核燃料元件有限公司 | Nozzle of conversion and reduction furnace and tools for machining same |
| CN102703734A (en) * | 2012-06-18 | 2012-10-03 | 中国恩菲工程技术有限公司 | Top-blown smelting equipment |
| CN104548433A (en) * | 2015-01-20 | 2015-04-29 | 晏子俊 | High-pressure dried carbon dioxide powder fire extinguisher |
| CN107503860A (en) * | 2017-07-03 | 2017-12-22 | 芜湖市海联机械设备有限公司 | A kind of high temperature resistant jet pipe |
| CN107503860B (en) * | 2017-07-03 | 2019-09-03 | 芜湖市海联机械设备有限公司 | A kind of high temperature resistant jet pipe |
| CN108246089A (en) * | 2018-03-14 | 2018-07-06 | 中国华电科工集团有限公司 | A kind of denitrating flue gas urea liquid spray gun |
| CN110567280A (en) * | 2019-09-04 | 2019-12-13 | 中国恩菲工程技术有限公司 | oxidation-reduction gun and oxidation-reduction furnace with same |
| CN110567280B (en) * | 2019-09-04 | 2024-03-15 | 中国恩菲工程技术有限公司 | Redox rifle and have its oxidation-reduction furnace |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| CU01 | Correction of utility model patent |
Correction item: Designer Correct: Xuan Demao False: Mi Demao Page: The title page |
|
| CU03 | Correction of utility model patent gazette |
Correction item: Designer Correct: Xuan Demao False: Mi Demao Number: 6 Page: 118 Volume: 8 |
|
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |