System for automatically feeding aluminum slag into furnace

Abstract

The utility model provides a system for automatically feeding aluminum slag into a furnace. The system comprises a slag hopper, a ground rail chain annular conveyor, a truss type conveyor, a single-hopper lifting tipping machine, a storage bin and an electric furnace, the single-bucket lifting tipping machine comprises a machine frame, an upper rail, a lower rail and a movable hanging frame. The upper rail is a straight rail; the middle lower section of the lower rail is a straight rail, and the upper section is transited to be horizontal through an arc; the movable hanging frame runs along the upper track and the lower track; the upper section of the single-bucket lifting tipping machine is located above the storage bin, and the storage bin communicates with the electric furnace. And the truss type conveyor is arranged between the ground rail chain annular conveyor and the single-bucket lifting tipping bucket machine. According to the automatic aluminum slag feeding and furnace entering system, the technical problems that in the prior art, aluminum slag feeding and furnace entering are carried out through manual operation of a traveling crane, and during hoisting and discharging, personnel make contact with aluminum slag in a close range and easily suck in aluminum slag ash dust, and arsenic hydride poisoning is caused are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of tin smelting, and particularly relates to an automatic aluminum slag feeding and furnace charging system. BACKGROUND

[0002] During the refining process of crude tin, aluminum is added to remove arsenic and antimony. Arsenic, antimony and aluminum form high-melting-point compounds, and their densities are all smaller than that of tin. At the refining temperature, the high-melting-point compounds crystallize and float out of the tin liquid to separate from the tin, forming aluminum slag.

[0003] The aluminum slag produced by adding aluminum to remove arsenic and antimony is easy to generate arsine in the presence of water or humid air. Arsine is a colorless, odorless and highly toxic gas, which is easy to cause arsine poisoning.

[0004] The aluminum slag produced by refining and tin concentrate are added into an electric furnace to produce high-antimony crude tin. In this process, the aluminum slag needs to be charged into the furnace. The current feeding method is that the aluminum slag is transferred from the refining workshop to the comprehensive smelting workshop through a slag hopper, and the slag hopper is hoisted to the feeding port of the electric furnace by a crane for feeding by manual operation. During feeding, the aluminum slag is poured out from the slag hopper by manual control of the crane, and the aluminum slag dust is scattered into the air, which is inhaled by the on-site workers, and arsine poisoning is easy to occur. UTILITY MODEL CONTENTS

[0005] To solve the technical problem of the existing technology that the aluminum slag is fed into the furnace by manual operation of the crane for hoisting and unloading. During hoisting and unloading, the personnel are in close contact with the aluminum slag, which is easy to inhale the aluminum slag dust, causing arsine poisoning. The utility model provides an automatic aluminum slag feeding and furnace charging system.

[0006] An automatic aluminum slag feeding and furnace charging system, comprising a slag hopper, a ground rail chain ring conveyor, a truss conveyor, a single-bucket lifting and tipping machine, a storage bin and an electric furnace. A plurality of mobile trolleys for placing the slag hopper are arranged on the ground rail chain ring conveyor. The single-bucket lifting and tipping machine comprises an inclined rack, a lifting chain and a lifting chain drive arranged on the rack, and a mobile hanger fixed on the lifting chain. The bottom of the mobile hanger is provided with a first guide wheel assembly and a second guide wheel assembly. The rack is further provided with an upper rail and a lower rail. The upper rail is a straight rail. The lower rail is a straight rail parallel to the upper rail at the middle and lower segments, and is horizontally connected to the upper rail at the upper segment through a circular arc. The first guide wheel assembly is adapted to the upper rail, and the second guide wheel assembly is adapted to the lower rail. The upper segment of the single-bucket lifting and tipping machine is located above the storage bin, and the storage bin is connected to the electric furnace. The truss conveyor is arranged between the ground rail chain ring conveyor and the single-bucket lifting and tipping machine.

[0007] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, the truss conveyor comprises a hoisting frame, a hoisting trolley and a conveying track for moving the hoisting trolley; and a lifting appliance is arranged on the hoisting trolley and can be lifted.

[0008] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, a crushing valve and a screw conveyor are sequentially arranged between the storage bin and the electric furnace.

[0009] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, a positioning baffle corresponding to the slag bucket is arranged on the moving trolley.

[0010] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, a dust removal chamber is further arranged, the upper section of the single-bucket lifting dumper and the inlet of the storage bin are arranged in the dust removal chamber, and the dust removal chamber is connected with a bag-type dust collector through an air pipe.

[0011] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, a weighing sensor is arranged on the storage bin.

[0012] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, an electric hoist is further arranged above one side of the ground rail chain ring conveyor.

[0013] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, the slag bucket is provided with two pairs of lifting rods, and the moving hanger is provided with fixing ears corresponding to the lifting rods.

[0014] In a preferable embodiment of the aluminum slag automatic feeding into furnace system, a limit switch is arranged on the ground rail chain ring conveyor.

[0015] Compared with the prior art, the aluminum slag automatic feeding into furnace system provided by the utility model has close contact with the aluminum slag only when the slag bucket is hoisted or lifted away from the ground rail chain ring conveyor, and the aluminum slag is in a relatively stable state at this time, so that the aluminum slag is not easy to be raised, and the operator can work after simple protection, and the rest of the feeding and dumper work is completed through the cooperation of the ground rail chain ring conveyor, the truss conveyor and the single-bucket lifting dumper, so that the risk of poisoning of the personnel is greatly reduced.

[0016] The aluminum slag is seriously raised when being poured, the dust removal chamber is arranged at the pouring position, the dust removal chamber is connected with the bag-type dust collector through an air pipe, the aluminum slag dust scattered in the air is collected by the bag-type dust collector, the aluminum slag dust is prevented from being scattered in the air, and the risk of the workshop staff contacting the aluminum slag dust is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of an aluminum slag automatic feeding into furnace system provided by the utility model;

[0018] Figure 2 is a structural schematic view of a truss conveyor in the aluminum slag automatic feeding into furnace system provided by the utility model;

[0019] Figure 3 is a structural schematic view of a single-bucket lifting dumper in the aluminum slag automatic feeding into furnace system provided by the utility model;

[0020] Figure 4 is a structural schematic view of a mobile hanger in the aluminum slag automatic feeding into furnace system provided by the utility model;

[0021] Figure 5 is a structural schematic view of a slag bucket in the aluminum slag automatic feeding into furnace system provided by the utility model. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0023] Please refer to Figures 1 to 5 , respectively, are a structural schematic view of an aluminum slag automatic feeding into furnace system provided by the utility model and structural schematic views of a truss conveyor, a single-bucket lifting dumper, a mobile hanger and a slag bucket in the system.

[0024] The aluminum slag automatic feeding into furnace system comprises a slag bucket 11, a ground rail chain ring conveyor 4, a truss conveyor 3, a single-bucket lifting dumper 5, a storage bin 6 and an electric furnace 9.

[0025] The slag bucket 11 comprises two pairs of hangers 22.

[0026] The ground rail chain ring conveyor 4 is provided with an electric hoist 2 above one side.

[0027] The ground rail chain ring conveyor 4 is provided with a limit switch and six mobile trolleys (not indicated in the figure) for placing the slag bucket 11, and the mobile trolleys are provided with positioning baffles (not shown in the figure) adapted to the slag bucket 11.

[0028] The truss conveyor 3 is arranged between the ground track chain loop conveyor 4 and the single-bucket lifting dumper 5. The truss conveyor 3 comprises a hoisting frame 15, a hoisting trolley 13 and a conveying track 12 for moving the hoisting trolley 13. One end of the conveying track 12 is arranged above the bottom of the single-bucket lifting dumper 5, and the other end is arranged above one side of the ground track chain loop conveyor 4. Limit switches are arranged at both ends of the conveying track 12. The hoisting trolley 13 is provided with a lifting device 14 which can be lifted, and the hook of the lifting device 14 is adapted to the lifting rod 22.

[0029] The single-bucket lifting dumper 5 comprises an inclined frame 17, a lifting chain 18 and a lifting chain drive 19 arranged on the frame 17, and a moving hanger 16 fixedly arranged on the lifting chain 18. The frame 17 is further provided with upper and lower tracks. The upper track is a straight track, and the lower track is a straight track in the middle and lower section and a horizontal track in the upper section through a circular arc transition. Limit switches are arranged at the upper and lower sections of the single-bucket lifting dumper 5.

[0030] The moving hanger 16 comprises a right main body and a left inclined part. The top of the main body is adapted to the slag bucket 11 and is provided with a fixing lug 23 adapted to the lifting rod 22. The bottom of the main body is provided with a first guide wheel assembly 20, and the bottom of the inclined part is provided with a second guide wheel assembly 21. The first guide wheel assembly 20 is adapted to the upper track, and the second guide wheel assembly 21 is adapted to the lower track.

[0031] The upper section of the single-bucket lifting dumper 5 and the inlet of the storage bin 6 are arranged in a dustproof chamber 10, and the dustproof chamber 10 is connected with a bag-type dust collector 1 through a wind pipe.

[0032] The storage bin 6 is provided with a weighing sensor. The outlet of the storage bin 6 passes through a crushing valve 7 and a screw conveyor 8 and then enters the electric furnace 9.

[0033] In specific implementation, the flat car stores the slag bucket 11 with materials in the aluminum slag house. When it is needed to add materials, the operator operates the electric hoist 2 to hoist the slag bucket 11 with materials to the moving trolley of the ground track chain loop conveyor 4. After the operator places the slag bucket 11 with materials on the six moving trolleys in turn, the automatic operation is started.

[0034] The ground track chain loop conveyor 4 starts to run. When the center line of one moving trolley coincides with the center line of the truss conveyor 3, the ground track chain loop conveyor 4 stops running.

[0035] The lifting appliance 14 on the trolley 13 moves downward and hooks the four lifting rods 22; the lifting appliance 14 drives the slag pot 11 to move upward, and after being lifted to the position, the trolley 13 moves along the conveying track 12 to the direction of the single-bucket lifting dumper 5 under the drive of the motor.

[0036] At this time, the moving hanger 16 of the single-bucket lifting dumper 5 stops at the bottom receiving position, and after the slag pot 11 moves above the moving hanger 16, the slag pot 11 moves downward. After the lifting rod 22 is placed into the fixed lug 23, the lifting appliance 14 is separated from the slag pot 11 and rises, and the trolley 13 moves to the direction of the ground rail chain conveyor 4, leaving space for the upward movement of the moving hanger 16.

[0037] The moving hanger 16 moves upward under the drive of the lifting chain drive 19. When the second guide wheel assembly 21 enters the circular arc transition to the horizontal stage, the moving hanger 16 gradually overturns and tilts, and the slag pot 11 synchronously overturns and tilts. When overturning to 90 degrees, the aluminum slag in the slag pot 11 is poured into the storage bin 6.

[0038] The lifting chain drive 19 reverses rotation, and the moving hanger 16 with the empty slag pot 11 overturns and tilts to the horizontal and runs downward to the bottom receiving position.

[0039] The trolley 13 moves along the conveying track 12 to the direction of the single-bucket lifting dumper 5 under the drive of the motor. The lifting appliance 14 on the trolley 13 moves downward under the drive of the motor and hooks the lifting rod 22. The lifting appliance 14 drives the empty slag pot 11 to move upward, and at the same time, the trolley 13 moves above the moving trolley on the ground rail chain conveyor 4. After the lifting appliance 14 lowers and places the empty slag pot 11 on the moving trolley, the lifting appliance 14 moves upward.

[0040] The ground rail chain drive conveyor 4 controls the moving trolley to move clockwise, and after the rear moving trolley runs to the position where the center line coincides with the center line of the truss conveyor 3. In this way, the aluminum slag loading work of six slag pots is completed.

[0041] The operator hoists the empty slag pot 11 away from the moving trolley and replaces it with a slag pot 11 containing aluminum slag, and in this way, the remaining aluminum slag loading work is completed.

[0042] During the loading work, the bag-type dust collector 1 works to collect aluminum slag dust scattered in the air.

[0043] After the material loading is completed, the storage bin 6 opens the feeding of the bottom discharge port according to the demand of the electric furnace for the aluminum slag per shift, the aluminum slag is crushed by the crushing valve 7 and then transmitted to the electric furnace 9 by the screw conveyor 8, and the work of automatic feeding of the aluminum slag into the furnace is completed.

[0044] The above is only an embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, is also included in the patent protection range of the present application.

Claims

1. An automatic aluminum slag feeding system, characterized in that: The slag hopper, the ground rail chain loop conveyor, the truss conveyor, the single-bucket lifting dumper, the storage bin and the electric furnace are included; a plurality of moving trolleys for placing the slag hopper are arranged on the ground rail chain loop conveyor; the single-bucket lifting dumper includes an obliquely arranged rack, the rack is provided with a lifting chain and a lifting chain drive, the lifting chain is fixed with a moving hanger; the bottom of the moving hanger is provided with a first guide wheel assembly and a second guide wheel assembly; the rack is further provided with an upper rail and a lower rail, the upper rail is a straight rail; the lower rail is a straight rail parallel to the upper rail in the middle and lower section, and is horizontally connected through a circular arc in the upper section; the first guide wheel assembly is adapted to the upper rail, and the second guide wheel assembly is adapted to the lower rail; the upper section of the single-bucket lifting dumper is located above the storage bin, the storage bin is connected to the electric furnace; the truss conveyor is arranged between the ground rail chain loop conveyor and the single-bucket lifting dumper.

2. The automatic aluminum slag feeding into the furnace system according to claim 1, characterized in that: The truss conveyor includes a hoisting rack, a hoisting trolley and a conveying rail for moving the hoisting trolley; the hoisting trolley is provided with a lifter capable of lifting.

3. The automatic feeding system of aluminum slag into the furnace according to claim 1, characterized in that: A crushing valve and a screw conveyor are sequentially arranged between the storage bin and the electric furnace.

4. The automatic aluminum slag feeding into the furnace system according to claim 1, characterized in that: The moving trolley is provided with a positioning baffle adapted to the slag hopper.

5. The automatic feeding system of aluminum slag into the furnace according to claim 1, characterized in that: A dust removal chamber is further arranged, the upper section of the single-bucket lifting dumper and the inlet of the storage bin are arranged in the dust removal chamber; the dust removal chamber is connected with a bag-type dust collector through a wind pipe.

6. The automatic feeding system of aluminum slag into the furnace according to claim 1, characterized in that: A weighing sensor is arranged on the storage bin.

7. The automatic feeding system of aluminum slag into the furnace according to claim 1, characterized in that: An electric hoist is further arranged above one side of the ground rail chain loop conveyor.

8. The automatic feeding system of aluminum slag into the furnace according to claim 1, characterized in that: The slag hopper is provided with two pairs of lifting rods, and the moving hanger is provided with fixing ears adapted to the lifting rods.

9. The automatic feeding system of aluminum slag into the furnace according to claim 1, characterized in that: A limit switch is arranged on the ground rail chain loop conveyor.

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