Bottom material discharge device of zinc concentrate fluidized roasting furnace and zinc concentrate fluidized roasting furnace

Abstract

The present invention discloses a bottom material discharge device of a zinc concentrate fluidized roasting furnace, comprising a discharge pipe, a sealing cover and a door cover assembly; the discharge pipe is arranged on the side wall of the furnace bed, the bottom of the tube cavity of the discharge pipe is flush with the bed surface of the furnace bed, the end pipe mouth of the first end of the discharge pipe is connected with the furnace bed, and the second end extends out of the outer surface of the side wall of the furnace bed; the top of the sealing cover is closed and the bottom end has a lower opening, the sealing cover is arranged at the second end of the discharge pipe, and the second end of the discharge pipe extends into the sealing cover; the door cover assembly comprises a rotating shaft and a door cover, the two ends of the rotating shaft are rotatably supported on the side wall of the sealing cover and one end is connected to an operating handle located outside the sealing cover; the door cover is located in the sealing cover, and the upper end of the door cover is fixed on the rotating shaft and arranged at the end of the second end of the discharge pipe through the rotating shaft. The present invention has the advantages of reliable and convenient bottom material discharge operation, improved operating efficiency of the roasting furnace, high safety and good environmental protection effect.

Description

Technical Field

[0001] The invention relates to the technical field of zinc concentrate fluidized roasting furnaces, in particular to a bottom material discharge device of a zinc concentrate fluidized roasting furnace and the zinc concentrate fluidized roasting furnace. Background Art

[0002] During the fluidized roasting of zinc concentrate, roasted sand particles grow through fusion, forming some large particles that are deposited at the bottom of the furnace bed. They cannot fluidize normally and block the air outlet, affecting the fluidization of roasted sand in some areas, reducing the operating efficiency of the equipment, and causing the furnace to shut down in severe cases. Therefore, it is necessary to regularly discharge large roasted sand particles through the bottom material discharge device.

[0003] The current bottom material discharge device adopts a type of discharge pipe arranged at the bottom or side of the furnace bed, and a gate is set in the middle of the pipe. The gate is opened when the bottom material is discharged, and the gate is closed after the discharge is completed. There are two main problems with this type of bottom material discharge device. First, after the gate is closed, the high-temperature roasted sand accumulates and cools in the pipe, which is easy to harden and jam the gate, making it impossible to open the gate normally; second, there is no sealing device near the gate, and the high-temperature roasted sand and smoke leak from the gap, causing environmental pollution, and may cause workers to be scalded when opening and closing the gate. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide a bottom material discharge device for a zinc concentrate fluidized roasting furnace, which is reliable and convenient to operate, improves the operating efficiency of the zinc concentrate fluidized roasting furnace, has high safety and good environmental protection effect.

[0005] The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to the first embodiment of the present invention comprises:

[0006] A discharge pipe, the discharge pipe is arranged on the side wall of the furnace bed of the zinc concentrate fluidized roasting furnace, the bottom of the tube cavity of the discharge pipe is flush with the bed surface of the furnace bed, the discharge pipe has a first end and a second end, the end pipe opening of the first end is connected to the furnace bed, and the second end extends out of the outer surface of the side wall of the furnace bed;

[0007] A sealing cover, the top end of the sealing cover is closed and the bottom end has a lower opening, the sealing cover is arranged at the second end of the discharge pipe, and the second end of the discharge pipe passes through the side wall of the sealing cover and extends into the sealing cover;

[0008] A door cover assembly, the door cover assembly includes a rotating shaft and a door cover, both ends of the rotating shaft are rotatably supported on the side walls of the sealing cover, one end of the rotating shaft is connected to an operating handle located outside the sealing cover; the door cover is located in the sealing cover, the upper end of the door cover is fixed on the rotating shaft, and the door cover is pivotally arranged at the end of the second end of the discharge pipe through the rotating shaft to close and open the end pipe opening of the second end of the discharge pipe.

[0009] According to the bottom material discharge device of the zinc concentrate fluidized roasting furnace of the first embodiment of the present invention, large-particle roasted sand can be discharged from the furnace through the discharge pipe, and the bottom of the tube cavity of the discharge pipe is flush with the bed surface of the furnace bed, so that the large-particle roasted sand in the furnace bed can be discharged; a door cover assembly is arranged at the second end of the discharge pipe, and the door cover is matched with the rotating shaft to open or close the discharge pipe, and a sealing cover is arranged at the second end of the discharge pipe and the outside of the door cover assembly to avoid environmental pollution caused by high-temperature roasted sand and smoke leakage, thereby improving environmental protection, and the door cover is arranged at the second end of the discharge pipe to avoid the roasted sand from being hardened and stuck after cooling, and the door cover cannot be opened and closed normally, and a sealing cover is arranged at the second end of the discharge pipe and the outside of the door cover assembly, and the operating handle is arranged outside the sealing cover, thereby isolating the worker's operating space from the roasted sand discharge channel, thereby improving the safety of work. In summary, the bottom material discharge operation of the bottom material discharge device of the zinc concentrate fluidized roasting furnace of the first embodiment of the present invention is reliable and convenient, improves the operating efficiency of the zinc concentrate fluidized roasting furnace, has high safety and good environmental protection effect.

[0010] According to an embodiment of the first aspect of the present invention, the discharge pipe is a heat-resistant steel pipe.

[0011] According to an embodiment of the first aspect of the present invention, an observation hole is provided on the sealing cover, and the observation hole is opposite to the end pipe opening of the second end of the discharge pipe.

[0012] According to a further embodiment of the first aspect of the present invention, the observation hole is provided with an openable hole cover.

[0013] According to an embodiment of the first aspect of the present invention, the top end of the sealing cover is closed by a top plate, and the top plate is detachably connected to the side wall of the sealing cover.

[0014] According to an embodiment of the first aspect of the present invention, the sealing cover is fixed to the outer peripheral surface of the discharge pipe.

[0015] According to an embodiment of the first aspect of the present invention, the rotating shaft is horizontally arranged and perpendicular to the axial direction of the discharge pipe, and the rotating shaft is located higher than the top of the discharge pipe.

[0016] According to an embodiment of the first aspect of the present invention, a limiting device for fixing the operating handle during the bottom material discharge process is further provided outside the sealing cover.

[0017] According to some embodiments of the first aspect of the present invention, 2 to 4 bottom material discharge devices are arranged simultaneously in the circumferential direction of the hearth according to the area size of the hearth.

[0018] The second aspect of the present invention also provides a fluidized roasting furnace for zinc concentrate.

[0019] The fluidized bed roasting furnace for zinc concentrate according to the second embodiment of the present invention comprises the bottom material discharge device of the fluidized bed roasting furnace for zinc concentrate according to any one of the first embodiments of the present invention.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of one position of a bottom material discharge device of a zinc concentrate fluidized roasting furnace according to an embodiment of the present invention.

[0023] Figure 2 It is a structural schematic diagram of another orientation of the bottom material discharge device of the zinc concentrate fluidized roasting furnace according to an embodiment of the present invention.

[0024] Reference numerals:

[0025] Zinc concentrate fluidized roasting furnace bottom material discharge device 1000

[0026] Discharge pipe 1

[0027] Sealing cover 2 Lower opening 201 Observation hole 202

[0028] Door cover assembly 3 Rotating shaft 301 Door cover 302

[0029] Operating handle 4

[0030] Top Plate 5

[0031] Hole cover 6 DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] Combine the following Figure 1 to Figure 2The bottom material discharge device 1000 of the fluidized roasting furnace of zinc concentrate according to an embodiment of the present invention is described.

[0034] like Figure 1 to Figure 2 As shown, according to the embodiment of the first aspect of the present invention, the bottom material discharge device 1000 of the zinc concentrate fluidized roasting furnace comprises a discharge pipe 1, a sealing cover 2 and a door cover assembly 3; the discharge pipe 1 is arranged on the side wall of the hearth of the zinc concentrate fluidized roasting furnace, the bottom of the tube cavity of the discharge pipe 1 is flush with the bed surface of the hearth, the discharge pipe 1 has a first end and a second end, the end pipe opening of the first end is connected to the hearth, and the second end extends out of the outer surface of the side wall of the hearth; the sealing cover 2 is closed at the top and has a lower opening 201 at the bottom, and the sealing cover 2 is arranged at the second end of the discharge pipe 1, The second end of the discharge pipe 1 passes through the side wall of the sealing cover 2 and extends into the sealing cover 2; the door cover assembly 3 includes a rotating shaft 301 and a door cover 302, both ends of the rotating shaft 301 are rotatably supported on the side wall of the sealing cover 2, and one end of the rotating shaft 301 is connected to the operating handle 4 located outside the sealing cover 2; the door cover 302 is located in the sealing cover 2, and the upper end of the door cover 302 is fixed on the rotating shaft 301, and the door cover 302 is pivotally arranged at the end of the second end of the discharge pipe 1 through the rotating shaft 301 to close and open the end pipe opening of the second end of the discharge pipe 1.

[0035] Specifically, the discharge pipe 1 is penetrated on the side wall of the furnace bed of the zinc concentrate fluidized roasting furnace, the bottom of the tube cavity of the discharge pipe 1 is flush with the bed surface of the furnace bed, the discharge pipe 1 has a first end and a second end, the end pipe mouth of the first end is connected with the furnace bed, and the second end extends out of the outer surface of the side wall of the furnace bed; thereby, the large-particle roasted sand deposited on the bottom of the furnace bed can flow out through the discharge pipe 1, the large-particle roasted sand flows into the discharge pipe 1 from the first end of the discharge pipe 1, passes through the discharge pipe 1 and flows out from the second end of the discharge pipe 1, and the bottom of the tube cavity of the discharge pipe 1 is flush with the bed surface of the furnace bed, so that the large-particle roasted sand at the bottom of the furnace bed can be discharged, avoiding the residual large-particle roasted sand blocking the air outlet, affecting the fluidization of the roasted sand in the local area, and reducing the equipment operation efficiency.

[0036] The sealing cover 2 is closed at the top and has a lower opening 201 at the bottom. The sealing cover 2 is arranged at the second end of the discharge pipe 1. The second end of the discharge pipe 1 passes through the side wall of the sealing cover 2 and extends into the sealing cover 2. Therefore, in the process of discharging the bottom material, the sealing cover 2 can better isolate the discharge pipe 1 from the external environment, avoid leakage of high-temperature roasted sand and smoke, and improve environmental protection. Large-particle roasted sand can be discharged through the lower opening 201 of the sealing cover 2.

[0037] The door cover assembly 3 includes a rotating shaft 301 and a door cover 302. Both ends of the rotating shaft 301 are rotatably supported on the side walls of the sealing cover 2. One end of the rotating shaft 301 is connected to the operating handle 4 located outside the sealing cover 2. The door cover 302 is located in the sealing cover 2. The upper end of the door cover 302 is fixed on the rotating shaft 301. The door cover 302 is pivotally arranged at the end of the second end of the discharge pipe 1 through the rotating shaft 301 to close and open the end pipe opening of the second end of the discharge pipe 1. It can be understood that when the zinc concentrate fluidized roasting furnace needs to discharge the bottom material, the rotating shaft 301 is driven to rotate by rotating the operating handle 4, so that the door cover 302 is opened, and the large-particle roasted sand flows out from the second end of the discharge pipe 1. When the bottom material discharge operation is completed, the rotating shaft 301 is driven to rotate by rotating the operating handle 4 to close the door cover 302. The door cover assembly 3 has high reliability. Workers can open or close the door cover 302 outside the sealing cover 2. The worker's operating space is isolated from the roasted sand discharge channel, which avoids the leakage of high-temperature roasted sand and smoke discharged from the second end of the discharge pipe 1, improves work safety, and has good environmental protection.

[0038] According to the bottom discharge device 1000 of the zinc concentrate fluidized roasting furnace of the first aspect of the present invention, large-particle roasted sand can be discharged from the furnace through the discharge pipe 1, and the bottom of the tube cavity of the discharge pipe 1 is flush with the bed surface of the furnace bed, so that the large-particle roasted sand in the furnace bed can be discharged; a door cover assembly 3 is arranged at the second end of the discharge pipe 1, and cooperates with the door cover 302 through the rotating shaft 301 to open or close the discharge pipe 1, and a sealing cover 2 is arranged at the second end of the discharge pipe 1 and the outside of the door cover assembly 3 to avoid environmental pollution caused by leakage of high-temperature roasted sand and smoke, thereby improving environmental protection. The door cover 302 is arranged at the second end of the discharge pipe 1 to avoid the roasted sand from being hardened and stuck to the door cover 302 after cooling and unable to be opened and closed normally. A sealing cover 2 is arranged at the second end of the discharge pipe 1 and the outside of the door cover assembly 3, and the operating handle 4 is arranged outside the sealing cover, thereby isolating the worker's operating space from the roasted sand discharge channel, thereby improving work safety. In summary, the bottom material discharge device 1000 of the zinc concentrate fluidized bed roasting furnace according to the first aspect of the present invention is reliable and convenient to operate, thereby improving the operating efficiency of the zinc concentrate fluidized bed roasting furnace, having high safety and good environmental protection effect.

[0039] According to an embodiment of the first aspect of the present invention, the discharge pipe 1 is a heat-resistant steel pipe, thereby preventing the discharge pipe 1 from being damaged by heat at high temperatures, ensuring the service life of the discharge pipe 1 and avoiding affecting the working efficiency of the zinc concentrate fluidized bed roasting furnace.

[0040] According to an embodiment of the first aspect of the present invention, an observation hole 202 is provided on the sealing cover 2, and the observation hole 202 is opposite to the end pipe opening of the second end of the discharge pipe 1. It can be understood that before the bottom material discharge operation, the surrounding situation of the discharge pipe 1 can be observed through the observation hole 202 to ensure the safety of the operating environment. After the door cover 302 is opened, when the discharge pipe 1 is not discharged smoothly, a steel chisel can be used to pass through the observation hole 202 to dredge the discharge pipe 1.

[0041] It should be noted that a collecting device is placed at the lower opening 201 of the sealing cover 2 to collect the roasted sand flowing out of the discharge pipe 1 .

[0042] According to a further embodiment of the first aspect of the present invention, an openable hole cover 6 is provided on the observation hole 202. It can be understood that the hole cover 6 seals the observation hole 202. Before the bottom material discharge operation, the hole cover 6 on the observation hole 202 is opened to observe the surrounding situation of the discharge pipe 1 through the observation hole 202 to ensure the safety of the operating environment. After the door cover 302 is opened, when the discharge pipe 1 is not discharged smoothly, the hole cover 6 can be opened and a steel bar can be used to pass through the observation hole 202 to dredge the discharge pipe 1.

[0043] According to an embodiment of the first aspect of the present invention, the top of the sealing cover 2 is closed by a top plate 5, and the top plate 5 is detachably connected to the side wall of the sealing cover 2. It can be understood that the top plate 5 closes the top of the sealing cover 2, which can prevent high-temperature roasted sand and smoke from leaking from the top of the sealing cover 2, has high safety and good environmental protection effect, and when it is necessary to inspect and repair the components in the sealing cover 2, the top plate 5 can be removed from the top of the sealing cover 2, so as to facilitate the inspection and repair.

[0044] Preferably, the top plate 5 is connected to the side wall of the sealing cover 2 via a flange, which is convenient for assembly and disassembly.

[0045] According to an embodiment of the first aspect of the present invention, the sealing cover 2 is fixed to the outer peripheral surface of the discharge pipe 1. It is understandable that the sealing cover 2 can be simply and conveniently fixed to the outer peripheral surface of the discharge pipe 1, and the fixing method is determined according to actual conditions, and can be welding fixing, flange connection fixing, etc.

[0046] According to an embodiment of the first aspect of the present invention, the rotating shaft 301 is horizontally arranged and perpendicular to the axial direction of the discharge pipe 1, and the rotating shaft 301 is located higher than the top of the discharge pipe 1. Therefore, when the door cover 302 needs to be closed, the door cover 302 can be naturally rotated and closed by its own gravity, thereby sealing the discharge pipe 1.

[0047] According to an embodiment of the first aspect of the present invention, a limiting device for fixing the operating handle 4 during the bottom material discharge process is further provided outside the sealing cover 2. It can be understood that when the zinc concentrate fluidized roasting furnace needs to discharge the bottom material, the rotating shaft 301 is driven to rotate by rotating the operating handle 4, so that the door cover 302 is opened. At this time, the limiting device is used to fix the operating handle 4, thereby fixing the position of the door cover 302. When the bottom material discharge operation is completed, the limiting device on the operating handle 4 is released, so that the door cover 302 is naturally rotated and closed by its own gravity, thereby sealing the discharge pipe 1.

[0048] According to some embodiments of the first aspect of the present invention, 2 to 4 bottom material discharge devices are arranged in the circumferential direction of the hearth according to the size of the hearth area. Thus, large-particle roasted sand in the zinc concentrate fluidized roasting furnace is discharged to avoid the residual large-particle roasted sand blocking the air outlet, affecting the fluidization of roasted sand in the local area, and reducing the operating efficiency of the equipment.

[0049] The second aspect of the present invention also provides a fluidized roasting furnace for zinc concentrate.

[0050] The fluidized bed roasting furnace for zinc concentrate according to the embodiment of the second aspect of the present invention comprises the bottom material discharge device 1000 of the fluidized bed roasting furnace for zinc concentrate according to any one of the first aspect of the present invention.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0052] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A bottom material discharge device for a zinc concentrate fluidized roasting furnace, characterized in that: include: A discharge pipe, the discharge pipe is arranged on the side wall of the furnace bed of the zinc concentrate fluidized roasting furnace, the bottom of the tube cavity of the discharge pipe is flush with the bed surface of the furnace bed, the discharge pipe has a first end and a second end, the end pipe opening of the first end is connected to the furnace bed, and the second end extends out of the outer surface of the side wall of the furnace bed; A sealing cover, the top end of the sealing cover is closed and the bottom end has a lower opening, the sealing cover is arranged at the second end of the discharge pipe, and the second end of the discharge pipe passes through the side wall of the sealing cover and extends into the sealing cover; A door cover assembly, the door cover assembly comprising a rotating shaft and a door cover, both ends of the rotating shaft are rotatably supported on the side walls of the sealing cover, one end of the rotating shaft is connected to an operating handle located outside the sealing cover; the door cover is located in the sealing cover, the upper end of the door cover is fixed on the rotating shaft, and the door cover is pivotally arranged at the end of the second end of the discharge pipe through the rotating shaft to close and open the end pipe opening of the second end of the discharge pipe; The sealing cover is provided with an observation hole, and the observation hole is opposite to the end pipe opening of the second end of the discharge pipe, so that when the discharge pipe is not discharged smoothly, the discharge pipe can be cleared by passing a steel chisel through the observation hole; The axes of the observation hole and the end pipe opening of the second end of the discharge pipe are collinear.

2. The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to claim 1, characterized in that: The discharge pipe is a heat-resistant steel pipe.

3. The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to claim 1, characterized in that: The observation hole is provided with an openable hole cover.

4. The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to claim 1, characterized in that: The top end of the sealing cover is closed by a top plate, and the top plate is detachably connected to the side wall of the sealing cover.

5. The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to claim 1, characterized in that: The sealing cover is fixed to the outer peripheral surface of the discharge pipe.

6. The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to claim 1, characterized in that: The rotating shaft is horizontally arranged and perpendicular to the axial direction of the discharge pipe, and the rotating shaft is located higher than the top of the discharge pipe.

7. The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to claim 1, characterized in that: A limiting device for fixing the operating handle during the bottom material discharge process is also provided outside the sealing cover.

8. The bottom material discharge device of the zinc concentrate fluidized roasting furnace according to any one of claims 1 to 7, characterized in that: The bottom material discharge devices are arranged in 2 to 4 units in the circumferential direction of the hearth according to the area of ​​the hearth.

9. A fluidized roasting furnace for zinc concentrate, characterized in that: It comprises a bottom material discharge device as described in any one of claims 1-8.

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