CN216947086U

CN216947086U - Submerged arc furnace for producing ferrochrome

Info

Publication number: CN216947086U
Application number: CN202123315607.3U
Authority: CN
Inventors: 曾辉
Original assignee: Hongjiang Sanxing Metallurgical Charge Co ltd
Current assignee: Hongjiang Sanxing Metallurgical Charge Co ltd
Priority date: 2021-12-27
Filing date: 2021-12-27
Publication date: 2022-07-12
Anticipated expiration: 2031-12-27

Abstract

The utility model discloses a submerged arc furnace for producing ferrochrome, which comprises a furnace body, wherein the top of the furnace body is provided with a smoke outlet pipe communicated with the interior of the furnace body; the top of the furnace body is provided with a stepping motor, the output end of the stepping motor is connected with a driving rod, the outer side surface of the driving rod is fixed with a connecting sleeve, the outer side surface of the connecting sleeve is fixed with an extension rod A, the other end of the extension rod A is fixed with a sleeve, the outer side surface of the sleeve is provided with an external thread, the upper end of the sleeve is in threaded connection with an upper connecting ring, the lower end of the sleeve is in threaded connection with a lower connecting ring, the ends of the smoke outlet pipe and the heat return pipe, which are far away from the furnace body, are correspondingly provided with external threads, and a cleaning piece is arranged in the sleeve; on the premise of ensuring that the smoke generated in the working process of the furnace body does not pollute the external environment, the heat flow contained in the smoke is recycled, and the smelting efficiency is effectively improved.

Description

Submerged arc furnace for ferrochrome alloy production

Technical Field

The utility model relates to the technical field of submerged arc furnaces for soldering iron production, in particular to a submerged arc furnace for ferrochrome alloy production.

Background

Ferrochrome is an iron alloy consisting of chromium and iron. Is an important alloy additive for steel making. The ferrochrome is divided into high-carbon ferrochrome, medium-carbon ferrochrome, low-carbon ferrochrome and micro-carbon ferrochrome according to different carbon contents, and also silicon-chromium alloy, chromium nitride ferrochrome and the like; an iron alloy containing chromium and iron as main components is one of the main alloying agents used in the steel industry, and contains impurities such as carbon, silicon, sulfur, phosphorus, and the like in addition to the main components of chromium and iron.

In the course of working of flatiron, need utilize the hot stove in ore deposit to smelt raw materials such as flatiron and carbonaceous, can produce chemical flue gas in the smelting process, if direct emission then can cause the pollution to external environment, and if not discharge then can form the dirt in the hot stove in ore deposit inside, follow-up firing process again can form chemical flue gas, influence the life of the hot stove in ore deposit, current hot stove in ore deposit generally is that the limit is smelted and is discharged, and the heat of storing in the flue gas then can run off along with discharging, it is long when smelting.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a submerged arc furnace for producing ferrochrome alloy, which comprises a furnace body, wherein the top of the furnace body is provided with a smoke outlet pipe communicated with the interior of the furnace body, the side wall of the furnace body is provided with a heat return pipe communicated with the interior of the furnace body, and the other end of the heat return pipe extends to the upper part of the smoke outlet pipe; the top of the furnace body is provided with a stepping motor, the output end of the stepping motor is connected with a driving rod, the outer side surface of the driving rod is fixed with a connecting sleeve, the outer side surface of the connecting sleeve is fixed with an extension rod A, the other end of the extension rod A is fixed with a sleeve, the outer side surface of the sleeve is provided with an external thread, the upper end of the sleeve is in threaded connection with an upper connecting ring, the lower end of the sleeve is in threaded connection with a lower connecting ring, the ends of the smoke outlet pipe and the heat return pipe, which are far away from the furnace body, are correspondingly provided with external threads, and a cleaning piece is arranged in the sleeve; a cooling piece is arranged on one side of the furnace body, and a sealing piece is fixed on the side surface of the connecting sleeve far away from the extension rod A.

Further, the cooling piece is including setting up in the air cooler of furnace body one side, and air compressor is connected with to air cooler's one end, and air compressor's output is connected with the ventilation pipe, and communicating pipe with the inside intercommunication of furnace body is installed at the top of furnace body, and the external screw thread has been seted up to the upper end lateral surface of communicating pipe.

Further, the closure piece includes and overlaps fixed extension rod B mutually with linking up, and extension rod B's the other end is fixed with top confined enclosure, and the external screw thread has been seted up to the lower extreme lateral surface of enclosure, and the lower extreme outside threaded connection of enclosure has the seal ring.

Furthermore, the cleaning element comprises an activated carbon layer arranged in the sleeve, and a filter element layer is arranged above the activated carbon layer in the sleeve.

Furthermore, the outer side surfaces of the upper connecting ring, the lower connecting ring and the closed ring are all fixed with auxiliary rods.

Furthermore, a smoke exhaust fan is arranged in the smoke outlet pipe.

The utility model has the following beneficial effects: when the sleeve is connected with a smoke outlet pipe and a heat return pipe, smoke generated in the working process of the furnace body is not polluted by the external environment, heat flow contained in the smoke is recycled, when the sleeve is connected with a communicating pipe, the quick cooling of the furnace body can be realized by utilizing the cooling piece, the switching between the working state and the cooling state is realized by utilizing the matching of the stepping motor, the sleeve and the sealing cover, and the smelting efficiency is effectively improved.

Drawings

FIG. 1 is a schematic view of the internal structure of the present invention;

fig. 2 is a schematic structural view of the sleeve of fig. 1.

The reference numerals are illustrated below: 1. a furnace body; 2. discharging the smoke tube; 3. a heat recovery pipe; 4. a stepping motor; 5. a drive rod; 6. a connecting sleeve; 7. an extension rod A; 8. a sleeve; 9. an upper connecting ring; 10. a lower connecting ring; 1101. an activated carbon layer; 1102. a filter layer; 1201. an air cooler; 1202. an air compressor; 1203. a vent pipe; 1204. a communicating pipe; 1301. an extension rod B; 1302. a closure cap; 1303. a closed ring; 14. an auxiliary lever; 15. an air extracting fan.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Moreover, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model will be further described with reference to the accompanying drawings in which:

as shown in fig. 1 and 2, a submerged arc furnace for producing ferrochrome alloy comprises a furnace body 1, wherein the top of the furnace body 1 is provided with a smoke outlet pipe 2 communicated with the interior of the furnace body 1, the side wall of the furnace body 1 is provided with a heat return pipe 3 communicated with the interior of the furnace body 1, and the other end of the heat return pipe 3 extends to the upper part of the smoke outlet pipe 2; the top of the furnace body 1 is provided with a stepping motor 4, the output end of the stepping motor 4 is connected with a driving rod 5, the outer side surface of the driving rod 5 is fixed with a connecting sleeve 6, the outer side surface of the connecting sleeve 6 is fixed with an extension rod A7, the other end of the extension rod A7 is fixed with a sleeve 8, the outer side surface of the sleeve 8 is provided with an external thread, the upper end of the sleeve 8 is in threaded connection with an upper connecting ring 9, the lower end of the sleeve 8 is in threaded connection with a lower connecting ring 10, the external threads are correspondingly arranged at the ends of the smoke outlet pipe 2 and the heat return pipe 3, which are far away from the furnace body 1, and a cleaning piece is arranged in the sleeve 8; the furnace body 1 is also provided with a cooling piece on one side, and a sealing piece is fixed on the side of the connecting sleeve 6 far away from the extension rod A7.

The cooling part comprises an air cooler 1201 arranged on one side of the furnace body 1, one end of the air cooler 1201 is connected with an air compressor 1202, the output end of the air compressor 1202 is connected with a ventilation pipe 1203, the top of the furnace body 1 is provided with a communicating pipe 1204 communicated with the interior of the furnace body 1, and the outer side surface of the upper end of the communicating pipe 1204 is provided with an external thread; the sealing element comprises an extension rod B1301 fixed with the connecting sleeve 6, a sealing cover 1302 with a sealed top is fixed at the other end of the extension rod B1301, external threads are arranged on the outer side surface of the lower end of the sealing cover 1302, and a sealing ring 1303 is connected to the outer side of the lower end of the sealing cover 1302 in a threaded mode; the cleaning piece comprises an activated carbon layer 1101 placed in the sleeve 8, and a filter element layer 1102 is placed above the activated carbon layer 1101 in the sleeve 8; and auxiliary rods 14 are fixed on the outer side surfaces of the upper connecting ring 9, the lower connecting ring 10 and the closing ring 1303. An exhaust fan 15 is arranged in the smoke outlet pipe 2.

The working principle of the utility model is as follows:

when the furnace body 1 needs to be started to work, the sleeve 8 is moved to a position between the smoke outlet pipe 2 and the heat return pipe 3 by using the stepping motor 4, the upper connecting ring 9 is connected with the heat return pipe 3 by rotating the auxiliary rod 14 of the upper connecting ring 9, the lower connecting ring 10 is connected with the smoke outlet pipe 2 by rotating the auxiliary rod 14 of the lower connecting ring 10, the sealing cover 1302 is positioned above the communicating pipe 1204 at the moment, and the sealing ring 1303 is connected with the communicating pipe 1204 by rotating the auxiliary rod 14 of the sealing ring 1303, so that heat flow is prevented from leaking out of the communicating pipe 1204; when the furnace body 1 works, hot smoke in the furnace body 1 can be guided into the smoke outlet pipe 2 by starting the exhaust fan 15, the activated carbon layer 1101 and the filter element layer 1102 in the sleeve 8 adsorb chemical harmful gas in the smoke, and heat flow flows back to the furnace body 1 through the heat return pipe 3, so that the harmful gas is effectively removed, and the heat flow is ensured not to be lost; when the furnace body 1 finishes working and needs cooling, the upper connecting ring 9 and the lower connecting ring 10 are rotated to be away from the heat return pipe 3 and the smoke outlet pipe 2 respectively, the closed ring 1303 is rotated to be away from the communicating pipe 1204, the stepping motor 4 is started to rotate for 180 degrees, the upper connecting ring 9 and the lower connecting ring 10 are rotated to be connected with the ventilating pipe 1203 and the communicating pipe 1204 respectively, the air cooler 1201 is started to cool air flow, and cold air flows into the furnace body 1 through the ventilating pipe 1203, the sleeve 8 and the communicating pipe 1204 by using the air compressor 1202 to realize cooling of the furnace body 1; under the prerequisite of guaranteeing that the flue gas that produces does not cause the pollution to external environment in the furnace body 1 working process, utilize step motor 4, sleeve 8 and closing boot 1302's cooperation to realize operating condition and cooling state's switching to the thermal current recycle that contains in the flue gas, effectively promote smelting efficiency.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed.

Claims

1. The utility model provides a hot stove in ore deposit is used in ferrochrome production, includes furnace body (1), its characterized in that: the top of the furnace body (1) is provided with a smoke outlet pipe (2) communicated with the interior of the furnace body (1), the side wall of the furnace body (1) is provided with a heat return pipe (3) communicated with the interior of the furnace body (1), and the other end of the heat return pipe (3) extends to the upper part of the smoke outlet pipe (2); the heating furnace is characterized in that a stepping motor (4) is installed at the top of the furnace body (1), the output end of the stepping motor (4) is connected with a driving rod (5), a connecting sleeve (6) is fixed on the outer side surface of the driving rod (5), an extension rod A (7) is fixed on the outer side surface of the connecting sleeve (6), a sleeve (8) is fixed at the other end of the extension rod A (7), external threads are formed on the outer side surface of the sleeve (8), an upper connecting ring (9) is connected to the upper end of the sleeve (8) in a threaded manner, a lower connecting ring (10) is connected to the lower end of the sleeve (8) in a threaded manner, external threads are correspondingly formed at one ends, far away from the furnace body (1), of the smoke outlet pipe (2) and the heat return pipe (3), and a cleaning piece is arranged in the sleeve (8); and a cooling piece is further arranged on one side of the furnace body (1), and a sealing piece is fixed on the side surface of the connecting sleeve (6) far away from the extension rod A (7).

2. The submerged arc furnace for producing ferrochrome according to claim 1, wherein: the cooling part comprises an air cooler (1201) arranged on one side of the furnace body (1), one end of the air cooler (1201) is connected with an air compressor (1202), the output end of the air compressor (1202) is connected with a ventilation pipe (1203), a communication pipe (1204) communicated with the inside of the furnace body (1) is installed at the top of the furnace body (1), and an external thread is formed in the outer side surface of the upper end of the communication pipe (1204).

3. The submerged arc furnace for producing ferrochrome according to claim 1, wherein: the sealing piece comprises an extension rod B (1301) fixed with the connection sleeve (6), a sealing cover (1302) with a sealed top is fixed to the other end of the extension rod B (1301), external threads are formed in the outer side face of the lower end of the sealing cover (1302), and a sealing ring (1303) is connected to the outer side of the lower end of the sealing cover (1302) in a threaded mode.

4. The submerged arc furnace for producing ferrochrome according to claim 1, wherein: the cleaning element comprises an activated carbon layer (1101) placed in a sleeve (8), and a filter layer (1102) is placed in the sleeve (8) above the activated carbon layer (1101).

5. The submerged arc furnace for producing ferrochrome according to claim 3, wherein: and auxiliary rods (14) are fixed on the outer side surfaces of the upper connecting ring (9), the lower connecting ring (10) and the closed ring (1303).

6. The submerged arc furnace for producing ferrochrome alloy according to claim 1, characterized in that: an exhaust fan (15) is arranged in the smoke outlet pipe (2).