CN212457936U - Solid mixing spray gun device in field of smelting reduction iron making - Google Patents
Solid mixing spray gun device in field of smelting reduction iron making Download PDFInfo
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- CN212457936U CN212457936U CN202020627977.7U CN202020627977U CN212457936U CN 212457936 U CN212457936 U CN 212457936U CN 202020627977 U CN202020627977 U CN 202020627977U CN 212457936 U CN212457936 U CN 212457936U
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Abstract
The utility model discloses a solid mixing spray gun device in smelting reduction ironmaking field, the device includes: the water jacket comprises a water jacket top, an outer pipe, a middle pipe, an inner pipe, a sealing flange, a mounting sleeve, a water inlet thermocouple and a water return thermocouple. Wherein the mounting sleeve comprises a flange, an outer pipe, an inner pipe and a water-cooling end plate. A solid mixing spray gun device in the field of smelting reduction iron making sprays raw materials into molten iron, ensures that the solid can be effectively sprayed into the molten iron and has a certain depth, and ensures that the raw materials have enough time to melt and dissolve; ensuring that the solid can fully stir the molten pool and promoting the reduction reaction; the solid can form a high enough spring effect to ensure that the metal liquid drops and the slag are transferred to the combustion area to heat and raise the temperature to provide enough heat for the reduction area.
Description
Technical Field
The utility model relates to a non-blast furnace melting ironmaking field relates to a solid spray gun, especially a solid mixing spray gun device in melting reduction ironmaking field.
Background
The coking coal (coke making) resource amount that blast furnace ironmaking used is less to iron ore powder can only be used after also needing to utilize sintering process to handle, and in blast furnace ironmaking technology process, the emission of pollutant is mostly concentrated in these two workshop sections, is obviously contrary to the requirement of environmental protection in present stage. In addition, as the coke oven in the national steel production country mainly in the world is dismantled due to aging, the coke supply is increasingly tense, the prices of coal and coke are continuously increased, the quality of the coke for blast furnace iron making is increasingly reduced, the working condition of the blast furnace is unstable, and the technical and economic indicators slide down, so that the restriction of resource shortage of the traditional blast furnace iron making process is continuously shown.
Environmental protection policies are increasingly strict, environmental protection investment is continuously improved, and environmental protection pressure born by the development of the steel industry is gradually increased. It is understood that the environmental protection investment before iron needs to be increased by about 200 yuan/ton (the environmental protection cost before iron accounts for about 70% of the total process cost) to realize the ultra-low emission reconstruction. Meanwhile, the blast furnace generates a large amount of solid wastes such as return ores, return cokes and dust, and the comprehensive utilization rate of solid waste resources is low. Compared with the traditional blast furnace ironmaking process, the non-blast furnace ironmaking process has the advantages of low requirement on raw materials, less pollutant emission, flexible operation system and capability of realizing efficient smelting, so the non-blast furnace ironmaking technology is a necessary trend for realizing low-carbon ironmaking in the steel industry.
Among the many non-blast furnace ironmaking processes, the most promising smelting reduction method has the advantages of high reaction rate and molten iron smelting strength about 5 to 10 times that of a blast furnace. The non-coking coal powder and the iron ore powder are directly used as raw materials, the iron pretreatment process of the traditional blast furnace iron making is cancelled, the pollution generated in the iron making process is reduced, the energy utilization rate is improved, and the economic benefit of the iron making is increased. The existing spray gun is often simple in structure and easy to burn in the using process, and the smelting rhythm is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
a solid mixing lance apparatus in the field of smelting reduction ironmaking, the apparatus comprising:
the water jacket top (1) is positioned at the head of the spray gun device and extends into the furnace to spray the solid raw materials;
the cooling water return system comprises an outer pipe (2), a middle pipe (3) and an inner pipe (4), wherein the outer pipe (2) and the middle pipe (3) form a cooling water return loop, and the middle pipe (3) and the inner pipe (4) form a cooling water inlet loop;
the top (1) of the water jacket is welded with the inner pipe (4), inserted into the middle pipe (3) and welded with the outer pipe (2);
the sealing flange (5) is positioned at the tail part of the spray gun device and seals a cooling water loop in the gun body;
the mounting sleeve (6) is arranged outside the outer pipe (2) of the gun body and is connected with the outer pipe to be used as a fixed connecting piece of the spray gun and the furnace body;
the water inlet thermocouple is arranged between the middle pipe (3) and the inner pipe (4) and is used for measuring the temperature of inlet water;
the backwater thermocouple is arranged between the outer pipe (2) and the middle pipe (3) and is used for measuring the temperature of the backwater;
the water inlet thermocouple and the water return thermocouple are respectively and electrically connected with the controller.
Further, the mounting sleeve (6) comprises a flange (9), a sleeve outer pipe (10), a sleeve inner pipe (11) and a water-cooling end plate (12); the front ends of the sleeve outer pipe (10) and the sleeve inner pipe (11) are welded with the water-cooling end plate (12), and the rear ends of the sleeve outer pipe (10) and the sleeve inner pipe (11) are welded with the flange (9).
Further, the flange (9) is welded to the outer tube (2).
Further, the outer surface of the outer tube (2) is roughened.
Further, the outer surface of the outer pipe (2) is provided with a plurality of bulges.
Furthermore, the height of the bulge on the outer surface of the outer pipe (2) is 1-5mm, the bulge is square, the side length of the square is 2-10mm, and the density of the bulge is 1-10/cm2。
Further, the solids mixing lance inner diameter was 175 mm.
Furthermore, the mounting sleeve (6) is of a mixing tube type, the inner sleeve tube (11) is straight and parallel to the outer tube (2) of the spray gun, and the outer sleeve tube (10) is conical.
Further, the taper of the sleeve outer tube (10) is 3 °.
Further, the portion of the mounting sleeve (6) adjacent the head of the spray gun apparatus is bevelled at an angle of 40 ° to the spray gun.
The utility model discloses an advantage and effect: the utility model provides a solid mixing spray gun device in smelting reduction ironmaking field, through the design of spray gun structure and telescopic, has guaranteed the life of spray gun, is fit for smelting reduction jetting raw materials, simultaneously, water-cooling circulation structure for the spray gun is in the smelting reduction furnace, and the spray gun is used for a long time, and the granule on spray gun surface has also ensured in time to hang the sediment. The spray gun internal diameter is 175mm, guarantees under given pressure that the solid can effectual jetting gets into the molten iron and has certain degree of depth, guarantees that the raw materials has enough time to melt the dissolution. The taper of the outer pipe of the mounting sleeve is 3 degrees, so that the surface of the mounting sleeve is not easy to hang slag and is more convenient to take out of the furnace; the head is an inclined plane which forms 40 degrees with the spray gun, so that the mounting sleeve is cooled more fully, and the service life of the mounting sleeve is prolonged.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof.
Drawings
FIG. 1 is a schematic view of a solid mixing spray gun device in the field of smelting reduction iron making
FIG. 2 is a schematic view of a solid mixing lance device mounting sleeve in the field of smelting reduction iron making
FIG. 3 is a schematic view of the water inlet and return of the body and mounting sleeve of the solids mixing lance (top view of I in FIG. 1)
Fig. 4 is a schematic view showing the flow development of cooling water on the outer surface of the inner pipe (water-cooled end plate and round steel). The flow channel design is optimized through round steel in the cooling water channel that comprises sleeve outer tube and sleeve inner tube, increases the velocity of water, reaches anticipated cooling effect.
1-water jacket top, 2-outer pipe, 3-middle pipe, 4-inner pipe, 5-sealing flange, 6-mounting sleeve, 9-flange, 10-sleeve outer pipe, 11-sleeve inner pipe, 12-water-cooling end plate, 13-spray gun water inlet, 14-spray gun water outlet, 15-water-cooling sleeve water inlet, 16-water-cooling sleeve water outlet and 17-round steel.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly and completely described below. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be obtained by a person skilled in the art without any inventive work based on the described embodiments of the present invention, belong to the protection scope of the present invention.
The technical solution of the present invention will be further explained and illustrated with reference to the following specific embodiments.
A solid mixing lance apparatus in the field of smelting reduction ironmaking, the apparatus comprising:
(1) the top of the water jacket: stretching into the furnace to spray solid raw materials.
(2) Outer tube: the appearance of the gun body and the middle pipe form a cooling water return loop.
(3) A middle pipe: can form a water inlet and return loop with the inner pipe and the outer pipe respectively.
(4) Inner pipe: and the central pipe and the cooling water inlet loop are formed.
(5) Sealing the flange: and the cooling water loop in the gun body is hermetically connected.
(6) Installing a sleeve: and the solid spray gun is fixedly connected with the furnace body.
(7) A water inlet thermocouple: an instrument for measuring the temperature of the inlet water; the test temperature finally shows the central control room.
(8) A water return thermocouple: a back water temperature measuring instrument; the test temperature finally shows the central control room.
Wherein the mounting sleeve (6) comprises a flange (9), a sleeve outer pipe (10), a sleeve inner pipe (11) and a water-cooling end plate (12).
The outer pipe is sleeved outside the middle pipe to form a water return pipeline, the middle pipe is sleeved outside the inner pipe to form a water inlet pipeline, cooling water flows into the gun body through the water inlet pipeline and flows out of the gun body through the water return pipeline after circulation, and the water inlet and return flange is connected with the spray gun at the tail of the gun; the top of the water jacket is welded with the inner pipe, inserted into the middle pipe and welded with the outer pipe; the water inlet thermocouple is arranged in the water inlet pipeline, the water return thermocouple is arranged in the water return pipeline, the thermocouple can monitor the temperature of inlet water and return water in real time, and the monitoring water flow can effectively cool the gun body. The front ends of the outer pipe and the inner pipe of the mounting sleeve are welded together with the water-cooling end plate, and after the rear ends of the outer pipe and the inner pipe of the mounting sleeve are welded together with the flange, the flange is welded with the outer pipe of the gun body. The sealing flange is welded with the middle pipe and the inner pipe of the gun body. The mounting sleeve is connected with the furnace body through a flange.
The surface of the gun body shell is subjected to pressing treatment. The surface is formed with roughness, preferably square-shaped protrusions, so that slag is more easily adhered to the surface of the gun body.
The mounting sleeve is a mixed tube type of taper and straight.
The taper of the outer pipe of the mounting sleeve is 3 degrees. So that the outer pipe wall is not easy to hang slag.
The angle between the mounting sleeve and the gun body is 40 degrees. So that the water cooling of the mounting sleeve is more sufficient.
The internal diameter of the solid mixing lance is 175 mm.
The top tip of the water jacket is made of phosphorus deoxidized copper.
As shown in fig. 1 and 2, a solid mixing lance apparatus in the field of smelting reduction iron making is comprised of: 1, the top of the water jacket, 2 outer pipes, 3 middle pipes, 4 inner pipes, 5 sealing flanges and 6 mounting sleeves. Wherein 6 the installation sleeve comprises a flange 9, a sleeve outer pipe 10, a sleeve inner pipe 11 and a water-cooled end plate 12. The outer pipe 2 is sleeved outside the middle pipe 3 to form a water return pipeline, and the middle pipe 3 is sleeved outside the inner pipe 4 to form a water inlet pipeline. Cooling water flows into the gun body through a water inlet pipeline, circulates and then flows out of the gun body through a water return pipeline, and a water inlet and return flange is connected with a spray gun at the tail of the gun; the top 1 of the water jacket is welded with the inner pipe 4, inserted into the middle pipe 3 and welded with the outer pipe 2; the water inlet thermocouple is arranged in the water inlet pipeline, and the water return thermocouple is arranged in the water return pipeline. The thermocouple can advance return water temperature in real time monitoring, and monitoring rivers can effectual cooling rifle body. The front ends of the outer pipe 10 and the inner pipe 11 of the installation sleeve are welded with the water-cooling end plate 12, and after the rear ends of the outer pipe 10 and the inner pipe 11 of the installation sleeve are welded with the flange 9, the flange 9 is welded with the outer pipe 2. The sealing flange 5 is welded to the middle tube 3 and the inner tube 4. The mounting sleeve is connected with the furnace body through a flange. The mixing lance body and mounting sleeve inlet water are shown in fig. 3, and the mounting sleeve cooling water flows as shown in fig. 4.
Example 1
The outer pipe sleeve forms the return water pipeline in well outside, and well pipe sleeve forms the inlet channel in the inner tube outside, and cooling water flows into the rifle body through the inlet channel, and the rifle body is flowed out through the return water pipeline after the circulation, advances the return water flange and is connected with the spray gun at the rifle tail. The top of the water jacket is welded with the inner pipe, spliced with the middle pipe and welded with the outer pipe. The top of the water jacket extends into the furnace to spray solid raw materials, and the solid raw materials react with molten iron in the furnace. The thermocouple that intakes sets up in the inlet channel, and the return water thermocouple sets up in the return water pipeline, and the thermocouple direct measurement advances return water temperature, and during the detection signal lug connection advances return water temperature in the control room, the monitoring rivers can effectual cooling rifle body. The front ends of the outer pipe and the inner pipe of the mounting sleeve are welded with the water-cooling end plate, and after the rear ends of the outer pipe and the inner pipe of the mounting sleeve are welded with the flange, the flange is welded with the outer pipe of the gun body, so that the gun body and the mounting sleeve are assembled. The sealing flange is welded with the middle pipe and the inner pipe of the gun body to seal the gun body. The mounting sleeve is connected with the furnace body through a flange.
Although the embodiments of the present invention have been described above, the description is only for the convenience of understanding the present invention, and the present invention is not limited thereto. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A solid mixing lance apparatus in the field of smelting reduction ironmaking, the apparatus comprising:
the water jacket top (1) is positioned at the head of the spray gun device and extends into the furnace to spray the solid raw materials;
the cooling water return system comprises an outer pipe (2), a middle pipe (3) and an inner pipe (4), wherein the outer pipe (2) and the middle pipe (3) form a cooling water return loop, and the middle pipe (3) and the inner pipe (4) form a cooling water inlet loop;
the top (1) of the water jacket is welded with the inner pipe (4), inserted into the middle pipe (3) and welded with the outer pipe (2);
the sealing flange (5) is positioned at the tail part of the spray gun device and seals a cooling water loop in the gun body;
the mounting sleeve (6) is arranged outside the outer pipe (2) of the gun body and is connected with the outer pipe to be used as a fixed connecting piece of the spray gun and the furnace body;
the water inlet thermocouple is arranged between the middle pipe (3) and the inner pipe (4) and is used for measuring the temperature of inlet water;
the backwater thermocouple is arranged between the outer pipe (2) and the middle pipe (3) and is used for measuring the temperature of the backwater;
the water inlet thermocouple and the water return thermocouple are respectively and electrically connected with the controller.
2. A solid-mixing lance arrangement in the field of smelting reduction ironmaking according to claim 1, characterized in that the mounting sleeve (6) comprises a flange (9), an outer sleeve tube (10), an inner sleeve tube (11), a water-cooled end plate (12); the front ends of the sleeve outer pipe (10) and the sleeve inner pipe (11) are welded with the water-cooling end plate (12), and the rear ends of the sleeve outer pipe (10) and the sleeve inner pipe (11) are welded with the flange (9).
3. A solid-mixing lance device in the field of smelting reduction ironmaking according to claim 2, characterised in that the flange (9) is welded to the outer pipe (2).
4. A solid-mixing lance device in the field of smelting reduction ironmaking according to claim 3, characterized in that the outer surface of the outer tube (2) has a roughness.
5. A solid mixing lance apparatus in the field of smelting reduction ironmaking according to claim 4, characterised in that the outer surface of the outer tube (2) has a number of protrusions.
6. The solid mixing lance device in the field of smelting reduction ironmaking according to claim 5, characterized in that the height of the outer surface protrusion of the outer tube (2) is 1-5mm, the protrusion is square, the side length of the square is 2-10mm, and the density of the protrusion is 1-10 pieces/cm2。
7. The solid mixing lance apparatus in the field of smelting reduction ironmaking according to claim 6, characterized in that the mounting sleeve (6) is of the mixing tube type, the inner sleeve tube (11) is straight and parallel to the outer lance tube (2), and the outer sleeve tube (10) is conical.
8. A solid-mixing lance apparatus in the field of smelting reduction ironmaking according to claim 7, characterised in that the taper of the sleeve outer tube (10) is 3 °.
9. A solid-mixing lance arrangement in the field of smelting reduction ironmaking according to claim 8, characterised in that the part of the mounting sleeve (6) near the head of the lance arrangement is bevelled at 40 ° to the lance.
10. The solid mixing lance apparatus in the field of smelting reduction ironmaking according to claim 9, wherein the inner pipe has an inner diameter of 175 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020627977.7U CN212457936U (en) | 2020-04-23 | 2020-04-23 | Solid mixing spray gun device in field of smelting reduction iron making |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020627977.7U CN212457936U (en) | 2020-04-23 | 2020-04-23 | Solid mixing spray gun device in field of smelting reduction iron making |
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| Publication Number | Publication Date |
|---|---|
| CN212457936U true CN212457936U (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020627977.7U Active CN212457936U (en) | 2020-04-23 | 2020-04-23 | Solid mixing spray gun device in field of smelting reduction iron making |
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| CN (1) | CN212457936U (en) |
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