Iron alloy baking device

Abstract

The utility model discloses an iron alloy baking device, and relates to the technical field of smelting. The lower side of the furnace body is fixedly connected with an annular bottom plate, the lower side of a fire-resistant heat preservation interlayer arranged on the inner side wall of the furnace body is connected with the upper side of the annular bottom plate, the lower portion of the outer side wall of the furnace body is connected with supports in an annular array, and the lower side of a combustion chamber arranged on the inner side wall of the fire-resistant heat preservation interlayer is connected with the upper side of the annular bottom plate; fire through holes are formed in the inner side wall of the combustion chamber at equal intervals, and the lower ends of ejection pipes communicated in an annular array on the lower side of the combustion chamber penetrate through the upper side of the annular bottom plate; the lower end of the injection pipe communicates with a fire supply assembly. According to the iron alloy baking device, blockage and flameout of the burner caused by iron alloy caking are effectively avoided, iron alloy can be conveniently and continuously baked by the iron alloy baking device, the iron alloy in the combustion chamber can be uniformly heated, and the iron alloy baking quality of the iron alloy baking device can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smelting, and particularly relates to a ferroalloy baking device. Background Art

[0002] With the development of steel production technology, steel producers pay more and more attention to steel quality and production costs. Ferroalloys are important components in steel production. However, during the transportation and storage of ferroalloys, due to changes in climate and factory conditions, some free water will adhere to the surface of the ferroalloys, and gradually form crystal water over time. Crystal water exists in the form of hydrates and will be reduced to free water under high temperature conditions, causing uncontrollable effects on the steel smelting process and damaging the quality of the steel. Therefore, the ferroalloys must be dried before adding them to bake out the moisture in the alloy. Dry evaporation is carried out to reduce the influence of elements other than alloy materials on the quality of molten steel. Ferroalloy baking device is a special equipment for baking ferroalloys. Through the sealed heating of ferroalloy baking device, ferrosilicon, ferromanganese, ferrochrome, ferromolybdenum, ferrotitanium and ferrovanadium alloy materials are dehydrated and baked. Free water is baked at 200℃ and crystallized water is baked at 400-600℃. The quality of alloy, especially the degree of alloy drying, plays a vital role in the quality of the final product of steel mills; but it still has the following disadvantages in actual use:

[0003] The existing ferroalloy baking device, during use, directly contacts the ferroalloy through the burner to achieve the baking process of the ferroalloy. However, the burner is blocked by the ferroalloy agglomeration, and even the burner is often extinguished, which affects the existing ferroalloy baking device to continuously bake the ferroalloy, and reduces the efficiency of the existing ferroalloy baking device when baking the ferroalloy.

[0004] 2. The existing ferroalloy baking device directly bakes the ferroalloy through the burner during use, which effectively reduces the free water on the ferroalloy and is beneficial to improving the production quality of the ferroalloy. However, due to the uneven heating of the ferroalloy, the existing ferroalloy baking device has poor uniformity when baking the ferroalloy, which reduces the quality of the ferroalloy baked by the existing ferroalloy baking device. Utility Model Content

[0005] The utility model aims to provide a ferroalloy baking device, which solves the problems that the existing ferroalloy baking devices are inconvenient for continuous baking treatment of the ferroalloy and the baking quality of the ferroalloy is poor.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model discloses a ferroalloy baking device, comprising a furnace body, a ring-shaped bottom plate fixedly connected to the lower side of the furnace body, a lower side of a refractory heat-insulating interlayer arranged on the inner wall of the furnace body connected to the upper side of the ring-shaped bottom plate, a bracket connected to the lower part of the outer wall of the furnace body in a ring array, a lower side of a combustion chamber arranged on the inner wall of the refractory heat-insulating interlayer connected to the upper side of the ring-shaped bottom plate, the combustion chamber is a hollow structure, fire-through holes are provided on the inner wall of the combustion chamber at equal intervals, the lower end of an ejector pipe connected to the lower side of the combustion chamber in a ring array passes through the upper side of the ring-shaped bottom plate; the lower end of the ejector pipe is connected to a fire supply assembly, the fire supply assembly includes a burner connected to the lower end of the ejector pipe, and the number of the burners is four.

[0008] Furthermore, a furnace cover is arranged above the furnace body, and the lower side of the sealing gasket arranged on the lower side of the furnace cover contacts the upper side of the furnace body.

[0009] Furthermore, an ear seat is fixedly connected to the outer wall of the furnace cover, a hinge connected to the lower side of the ear seat is connected to the upper part of the outer wall of the furnace body, a hydraulic rod is connected to the middle part of the lower side of the first circular seat connected to the lower side of the ear seat, a hydraulic cylinder is connected to the lower side of the hydraulic rod, and the lower side of the second circular seat connected to the lower side of the hydraulic cylinder is connected to the upper side of the bracket.

[0010] Furthermore, a pneumatic valve is connected to the exhaust pipe connected to the upper side of the furnace cover.

[0011] Furthermore, an internal threaded sleeve is threadedly connected to one end of the burner outer side close to the ejector tube, and the internal threaded sleeve is threadedly connected to the ejector tube at one end away from the burner.

[0012] Furthermore, a gas pipe, an air pipe and a constantly burning flame pipe are arranged on the outer wall of the burner. The gas pipe, the air pipe and the constantly burning flame pipe are connected in a circular array on the outer wall of the burner. One-way valves are connected to the outside of the gas pipe, the air pipe and the constantly burning flame pipe.

[0013] Furthermore, a discharge hopper connected to the combustion chamber below is sleeved on the inner side of the annular bottom plate, a valve is provided on the upper side of the inside of the discharge hopper, and a connecting shaft fixed to the outer wall of the valve is rotatably connected to the side wall of the discharge hopper.

[0014] Furthermore, a second pulley is connected to the end of the connecting shaft passing through the discharge hopper, and the second pulley is connected to the first pulley through a transmission belt. The end of the rotating shaft sleeved inside the first pulley is connected to a motor, and the upper side of the base connected to the outer wall of the motor is connected to the lower side of the bracket.

[0015] The utility model has the following beneficial effects:

[0016] The utility model provides a combustion chamber, a fire hole and an ejection tube, thereby effectively avoiding direct contact between the burner and the ferroalloy, effectively avoiding blockage of the burner due to ferroalloy agglomeration, and avoiding frequent flameout of the burner due to blockage, and facilitating the control of the burner to continuously bake the ferroalloy inside the furnace body, which is beneficial to improving the efficiency of the ferroalloy baking device in baking the ferroalloy.

[0017] The utility model provides a fire supply component to facilitate uniform preheating of the ferroalloy inside the combustion chamber, so that the ferroalloy inside the combustion chamber is heated and baked more uniformly, which is beneficial to improving the baking quality of the ferroalloy by the ferroalloy baking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for describing the embodiments are briefly introduced below.

[0019] Figure 1 A three-dimensional diagram of a ferroalloy baking device Figure 1 ;

[0020] Figure 2 It is a schematic diagram of the connection between the solid body, the discharge hopper and the combustion chamber;

[0021] Figure 3 It is a schematic diagram of the connection between the valve and the discharge hopper;

[0022] Figure 4 A three-dimensional diagram of a ferroalloy baking device Figure 2 ;

[0023] Figure 5 for Figure 4 A schematic diagram of the enlarged structure in the middle.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] 1. Furnace body; 11. Bracket; 12. Annular bottom plate; 13. Refractory heat-insulating interlayer; 2. Furnace cover; 21. Sealing pad; 22. Exhaust pipe; 221. Pneumatic valve; 23. Hydraulic cylinder; 231. Hydraulic rod; 232. First circular seat; 233. Second circular seat; 24. Ear seat; 241. Hinge; 3. Fire supply assembly; 31. Burner; 311. Gas pipe; 312. Air pipe; 313. Constant-burning fire pipe; 314. One-way valve; 32. Internal threaded sleeve; 4. Discharging hopper; 41. Motor; 411. Machine base; 412. Rotating shaft; 413. First pulley; 414. Transmission belt; 42. Connecting shaft; 421. Valve; 422. Second pulley; 5. Combustion chamber; 51. Fire hole; 52. Ejector pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0027] See also Figure 1 , 2As shown, the utility model is a ferroalloy baking device, comprising a furnace body 1, an annular bottom plate 12 is fixedly connected to the lower side of the furnace body 1, a refractory heat-insulating interlayer 13 arranged on the inner side wall of the furnace body 1 is connected to the upper side of the annular bottom plate 12 on the lower side, a bracket 11 is connected to the lower part of the outer side wall of the furnace body 1 in an annular array, a combustion chamber 5 arranged on the inner side wall of the refractory heat-insulating interlayer 13 is connected to the upper side of the annular bottom plate 12 on the lower side, the combustion chamber 5 is a hollow structure, and fire holes 51 are opened at equal intervals on the inner side wall of the combustion chamber 5, and the lower end of the ejector pipe 52 connected to the lower side of the combustion chamber 5 in an annular array passes through the upper side of the annular bottom plate 12, which effectively avoids the burner 31 from directly contacting the alloy to bake the alloy, effectively avoids the alloy from caking the burner 31, and effectively avoids the flame of the burner 31 from being frequently extinguished due to the blockage, so as to facilitate the control of the ferroalloy baking device to better bake the ferroalloy;

[0028] Among them Figure 1 As shown, a furnace cover 2 is arranged above the furnace body 1, and the lower side of the sealing gasket 21 arranged on the lower side of the furnace cover 2 contacts the upper side of the furnace body 1, effectively blocking the inlet of the furnace body 1, effectively reducing the amount of heat dissipated inside the furnace body 1, and better baking the ferroalloy inside the furnace body 1;

[0029] An ear seat 24 is fixedly connected to the outer wall of the furnace cover 2, and a hinge 241 connected to the lower side of the ear seat 24 is connected to the upper part of the outer wall of the furnace body 1. A hydraulic rod 231 is connected to the middle part of the lower side of the first circular seat 232 connected to the lower side of the ear seat 24, and a hydraulic cylinder 23 is connected to the lower side of the hydraulic rod 231. The lower side of the second circular seat 233 connected to the lower side of the hydraulic cylinder 23 is connected to the upper side of the bracket 11, so that the hydraulic cylinder 23 can be easily controlled to adjust the position of the furnace cover 2 and open or close the furnace cover 2; a pneumatic valve 221 is connected to the exhaust pipe 22 connected to the upper side of the furnace cover 2, so that the gas inside the furnace body 1 can be automatically discharged to avoid excessive pressure inside the furnace body 1, which is conducive to improving safety;

[0030] Among them Figure 5 As shown, an inner thread sleeve 32 is threadedly connected to one end of the burner 31 near the ejector tube 52, and an end of the inner thread sleeve 32 away from the burner 31 is threadedly connected to the ejector tube 52, so as to facilitate the disassembly and assembly between the ejector tube 52 and the burner 31;

[0031] When the above-mentioned arrangement is used, the furnace cover 2 is opened, and the ferroalloy is introduced into the combustion chamber 5 from the feed port of the furnace body 1. The flame after combustion of the burner 31 is introduced into the hollow cavity of the combustion chamber 5 through the injector tube 52. The fire inside the hollow cavity of the combustion chamber 5 passes through the fire hole 51 into the combustion chamber 5, and the ferroalloy inside the combustion chamber 5 is baked.

[0032] Among them Figure 1 , 4As shown in FIG. 5 , the lower end of the ejector tube 52 is connected to the fire supply assembly 3, and the fire supply assembly 3 includes a burner 31 connected to the lower end of the ejector tube 52. The number of the burners 31 is four. A plurality of burners 31 are evenly arranged on the lower side of the combustion chamber 5, which is conducive to the hot gas to move from bottom to top through the gaps between the alloys inside the combustion chamber 5, which is conducive to uniform preheating of the ferroalloy inside the combustion chamber 5, and is conducive to uniform baking of the ferroalloy inside the combustion chamber 5, thereby improving the baking quality of the ferroalloy;

[0033] Among them Figure 5 As shown, a gas pipe 311, an air pipe 312 and a constantly burning flame pipe 313 are arranged on the outer wall of the burner 31. The gas pipe 311, the air pipe 312 and the constantly burning flame pipe 313 are connected in a ring array on the outer wall of the burner 31. The outsides of the gas pipe 311, the air pipe 312 and the constantly burning flame pipe 313 are all connected with a one-way valve 314, which is convenient for simultaneously providing gas, air and flame to the burner 31, which is beneficial to the combustion of the burner 31.

[0034] Among them Figure 4 , 5 As shown, the discharge hopper 4 connected to the lower part of the combustion chamber 5 is sleeved on the inner side of the annular bottom plate 12, and a valve 421 is provided on the upper side of the discharge hopper 4. The connecting shaft 42 fixed to the outer wall of the valve 421 is rotatably connected to the side wall of the discharge hopper 4, so that the discharge of the ferroalloy baked inside the combustion chamber 5 can be achieved by adjusting the position of the valve 421.

[0035] The end of the connecting shaft 42 passing through the discharge hopper 4 is connected to a second pulley 422, and the second pulley 422 is connected to the first pulley 413 through a transmission belt 414. The end of the rotating shaft 412 sleeved inside the first pulley 413 is connected to the motor 41, and the upper side of the base 411 connected to the outer wall of the motor 41 is connected to the lower side of the bracket 11, so as to facilitate the control of the motor 41 to adjust the position of the valve 421;

[0036] When the above arrangement is used, the one-way valve 314 is opened, the gas inside the gas pipe 311 enters the burner 31, the air inside the air pipe 312 enters the burner 31, the open flame inside the constant open flame pipe 313 contacts the gas and air, the burner 31 burns, and provides fire to the inside of the combustion chamber 5.

[0037] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A ferroalloy baking device, comprising a furnace body (1), wherein an annular bottom plate (12) is fixedly connected to the lower side of the furnace body (1), a refractory heat-insulating interlayer (13) arranged on the inner side wall of the furnace body (1) is connected to the upper side of the annular bottom plate (12) on the lower side, and a bracket (11) is connected to the lower part of the outer side wall of the furnace body (1) in an annular array, characterized in that: The lower side of the combustion chamber (5) arranged on the inner wall of the fire-resistant heat-insulating interlayer (13) is connected to the upper side of the annular bottom plate (12); the combustion chamber (5) is a hollow structure; the inner wall of the combustion chamber (5) is provided with fire holes (51) at equal intervals; the lower end of the ejector tube (52) connected in an annular array on the lower side of the combustion chamber (5) passes through the upper side of the annular bottom plate (12); The lower end of the ejector tube (52) is connected to a fire supply assembly (3), and the fire supply assembly (3) includes a burner (31) connected to the lower end of the ejector tube (52), and the number of the burners (31) is four.

2. The ferroalloy baking device according to claim 1, characterized in that: A furnace cover (2) is arranged above the furnace body (1), and a lower side of a sealing gasket (21) arranged on the lower side of the furnace cover (2) contacts the upper side of the furnace body (1).

3. The ferroalloy baking device according to claim 2, characterized in that: The outer wall of the furnace cover (2) is fixedly connected to an ear seat (24); a hinge (241) connected to the lower side of the ear seat (24) is connected to the upper part of the outer wall of the furnace body (1); a hydraulic rod (231) is connected to the middle part of the lower side of a first circular seat (232) connected to the lower side of the ear seat (24); a hydraulic cylinder (23) is connected to the lower side of the hydraulic rod (231); and a second circular seat (233) connected to the lower side of the hydraulic cylinder (23) is connected to the upper side of the bracket (11).

4. The ferroalloy baking device according to claim 3, characterized in that: A pneumatic valve (221) is connected to the exhaust pipe (22) connected to the upper side of the furnace cover (2).

5. The ferroalloy baking device according to claim 1, characterized in that: An end of the outer side of the burner (31) close to the ejector tube (52) is threadedly connected to an internal threaded sleeve (32), and an end of the internal threaded sleeve (32) away from the burner (31) is threadedly connected to the ejector tube (52).

6. The ferroalloy baking device according to claim 5, characterized in that: The outer wall of the burner (31) is provided with a gas pipe (311), an air pipe (312) and a constantly open flame pipe (313); the gas pipe (311), the air pipe (312) and the constantly open flame pipe (313) are connected to the outer wall of the burner (31) in a ring array; and the outer sides of the gas pipe (311), the air pipe (312) and the constantly open flame pipe (313) are all connected to a one-way valve (314).

7. The ferroalloy baking device according to claim 1, characterized in that: The discharge hopper (4) connected to the combustion chamber (5) below is sleeved on the inner side of the annular bottom plate (12), and a valve (421) is provided on the upper side of the inside of the discharge hopper (4). The connecting shaft (42) fixedly connected to the outer wall of the valve (421) is rotatably connected to the side wall of the discharge hopper (4).

8. The ferroalloy baking device according to claim 7, characterized in that: The end of the connecting shaft (42) passing through the discharge hopper (4) is connected to a second pulley (422), the second pulley (422) is connected to the first pulley (413) through a transmission belt (414), the end of the rotating shaft (412) sleeved inside the first pulley (413) is connected to a motor (41), and the upper side of the machine base (411) connected to the outer wall of the motor (41) is connected to the lower side of the bracket (11).

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