CN216205138U

CN216205138U - Feeding device of wet-process zinc smelting leaching slag drying kiln

Info

Publication number: CN216205138U
Application number: CN202122238385.3U
Authority: CN
Inventors: 刘剑祥
Original assignee: Hanzhong Zinc Industry Co ltd
Current assignee: Hanzhong Zinc Industry Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2022-04-05
Anticipated expiration: 2031-09-15

Abstract

The utility model relates to the field of non-ferrous smelting solid hazardous waste treatment technology, in particular to a feeding device of a zinc hydrometallurgy leaching slag drying kiln, which comprises a feeding mechanism and a conveying mechanism, wherein the feeding mechanism comprises a shell, a driving group positioned outside the shell, a discharging hopper above the shell and three spiral groups positioned inside the shell, the spiral groups are driven by the driving group, the spiral groups are arranged in parallel and positioned on the same horizontal line, and the rotating directions of two adjacent spiral groups are opposite; the conveying mechanism is obliquely arranged, the feeding device is positioned at one end, lower in position, of the conveying mechanism, and the end, higher in position, of the conveying mechanism is positioned at a feeding end of the drying kiln. The feeding device for the wet zinc smelting leaching residue drying kiln can realize controllable and uniform feeding, has low investment cost and centralized occupied space, and fills the technical problem of large-material-quantity uniform feeding of the wet sticky residue drying kiln in China.

Description

Feeding device of wet-process zinc smelting leaching slag drying kiln

Technical Field

The utility model relates to the field of non-ferrous smelting solid hazardous waste treatment technology, in particular to a feeding device of a zinc hydrometallurgy leaching residue drying kiln.

Background

The leaching slag generated by the zinc smelting by the wet method contains valuable heavy metals such as silver, lead, copper, iron, gold and the like, and also contains harmful substances such as sulfur, nitrogen oxide and the like, belongs to solid hazardous waste, and is subjected to harmless treatment according to the national regulation. The slag generally contains 4-7 percent of zinc, the water content is higher and is generally 25-45 percent, the slag is in a sticky mud shape and is easy to stick and block, wet slag is easy to stick and fill in a storage bin in the solid waste treatment process, and the feeding and conveying difficulty is large.

At present, leached wet slag poured into a bin by a vehicle is grabbed into a conical steel bin through a bin travelling grab bucket, conveyed to a belt conveyor through a disc feeder at the lower part of the bin and then conveyed to a feed inlet of a drying kiln through the belt conveyor. But foreign matters such as stones and bricks are carried in the vehicle transportation process, so that the difficulty of feeding and conveying is increased.

Because of above reason, automatic unloading can't be realized to circular cone feed bin and is passed to conveyor belt by disc feeder and then sends into the drying kiln, leads to the drying kiln can not stabilize the dry sediment of output and satisfies the batching demand of side-blown smelting furnace. At present, wet slag processing and feeding equipment in the industry also has the problems of complex design of conveying wet slag, high investment and operation cost and the like.

SUMMERY OF THE UTILITY MODEL

Aiming at the problem of inconvenient feeding of a wet sticky slag drying kiln in the prior art, the utility model provides the feeding device of the wet zinc smelting leaching slag drying kiln, which solves the problem that wet sticky slag cannot normally feed materials to the drying kiln through a conical bin and a disc feeder, comprehensively considers various factors such as the characteristics of wet slag and large feeding quantity, has a large slag water-containing range, is matched with the drying kiln, and has the characteristics of uniform and controllable feeding, simplicity, reliability and the like.

The utility model is realized by the following technical scheme:

a feeding device of a zinc hydrometallurgy leaching residue drying kiln comprises a feeding mechanism and a conveying mechanism, wherein the feeding mechanism is positioned below a ground level, the feeding mechanism comprises a shell, a driving group positioned outside the shell, a discharging hopper positioned above the shell and three spiral groups positioned inside the shell, the spiral groups are driven by the driving group, the spiral groups are arranged in parallel and positioned on the same horizontal line, and the rotating directions of two adjacent spiral groups are opposite; a discharge pipe is arranged on one side of the spiral group opposite to the driving group;

conveying mechanism inclines to set up, feeder is located the lower one end in conveying mechanism position, the export of discharging pipe is located conveying mechanism's top, the higher one end in conveying mechanism position is located the pan feeding end of drying kiln.

Preferably, the blanking funnel is formed by surrounding a discharging side plate and three vertical material plates, and the discharging side plate inclines towards one side far away from the material plates.

Preferably, the inclination angle of the discharging side plate is 50-70 degrees.

Preferably, the bottom of the blanking funnel is provided with a screen plate.

Preferably, the conveying mechanism is an inclined belt conveyor.

Preferably, the inclination angle of the conveying mechanism is in the range of 10 ° to 18 °.

Preferably, a discharging hopper is arranged at the end, with the higher position, of the conveying mechanism.

Preferably, a guide chute is arranged at one end of the discharging hopper close to the conveying mechanism.

Compared with the prior art, the utility model has the following beneficial effects:

according to the feeding device for the leaching residue drying kiln for the zinc hydrometallurgy, provided by the utility model, by arranging three groups of spirals and utilizing the principle that the axial thrust of the spirals is large, leaching residues are extruded from the shaft end by the discharging pipe in clearance fit between the spirals, the extruded wet residues fall on the conveying mechanism below by virtue of the gravity of the wet residues, and the wet residues are conveyed to the feeding hole of the drying kiln by the conveying mechanism and enter the kiln for drying treatment. The feeding device is low in investment cost and centralized in occupied space, the feeding mechanism is located below the horizon, feeding of an excavator and a forklift is facilitated, cleaning of foreign matters in leaching slag is facilitated, and the feeding device is low in operation cost compared with similar equipment. Meanwhile, the innovative design of the feeding device is successful, and the technical problem of large-material-quantity uniform feeding of the domestic wet sticky slag drying kiln is solved.

Furthermore, the section of the blanking funnel is square and square, so that the blanking funnel is not too high, and the phenomenon of material filling is avoided. Three sides of a bin above the discharging funnel are vertical, and a discharging side plate is obliquely arranged. Before feeding, an excavator is matched with manual work to clean foreign matters in the leached residues, so that accident potential of feeding equipment can be reduced.

Furthermore, the screen separation plate can prevent overlarge foreign matters from entering the lower storage bin to cause the condition of blocking or damaging the spiral shaft, and the accident potential of the feeding equipment is further reduced.

Furthermore, conveying mechanism adopts conveyor belt, and it has to bear the weight of big, long distance transport, the transmission is stable, the characteristics of being convenient for install, helps further reducing equipment running cost.

Furthermore, the inclination angle of the conveying mechanism has an important influence on the transportation of the wet sticky slag materials, and the wet sticky slag is easy to slide off in the transportation process due to the overlarge inclination angle; if the inclination angle is too small, the length of the conveying mechanism is large, and the occupied area of the equipment is too large, so that the cost is not reduced.

Further, the setting of lower hopper and baffle box can be guaranteed wet the sediment and get into the drying kiln in, avoid wet the sediment of gluing to drop in the drying kiln outside, guarantee the feed demand of drying kiln.

Drawings

FIG. 1 is a schematic structural diagram of a feeding device of a zinc hydrometallurgy leaching residue drying kiln of the utility model;

FIG. 2 is a sectional view A-A;

FIG. 3 is a schematic diagram of a screen plate of a feeding device of a leaching residue drying kiln for zinc hydrometallurgy according to the utility model;

FIG. 4 is a schematic diagram of a conveying mechanism of a feeding device of a zinc hydrometallurgy leaching residue drying kiln of the utility model.

In the figure, 1, a feeding funnel; 101. a discharging side plate; 102. a material plate; 2. a spiral group; 3. a conveying mechanism; 4. feeding a hopper; 5. a drying kiln; 6. a housing; 7. a drive group; 8. a screen plate; 9. a material guide groove.

Detailed Description

The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the utility model.

The utility model provides a zinc hydrometallurgy leaches sediment drying kiln feeder, refers to fig. 1, including feed mechanism and conveying mechanism 3, feed mechanism is located the horizon below, and feed mechanism is located the horizon below, not only is convenient for excavator and forklift feed, also is convenient for carry out the clearance of leaching foreign matter in the sediment, compares the working costs lower with similar equipment.

Referring to fig. 1 and 2, the feeding mechanism includes a housing 6, a driving group 7 located outside the housing 6, a discharging funnel 1 above the housing 6, and three spiral groups 2 located inside the housing 6, the spiral groups 2 are driven by the driving group 7, the spiral groups 2 are arranged in parallel and located on the same horizontal line, and the rotation directions of two adjacent spiral groups 2 are opposite. A discharge pipe is arranged on one side of the spiral group 2 opposite to the driving group 7.

The blanking funnel 1 is formed by a discharging side plate 101 and three vertical material plates 102 in a surrounding mode, the discharging side plate 101 inclines towards one side far away from the material plates 102, and the inclination angle is 50-70 degrees. The section of the blanking funnel 1 is square and is not too high, so that the phenomenon of material filling is avoided. Three sides of the upper storage bin of the discharging hopper 1 are vertical, and the discharging side plate 101 is obliquely arranged. Before feeding, an excavator is matched with manual work to clean foreign matters in the leached residues, so that accident potential of feeding equipment can be reduced.

Referring to fig. 3, the bottom of unloading funnel 1 is equipped with and separates sieve 8, and the sieve 8 is made by steel in this embodiment, separates sieve 8 and can prevent that too big foreign matter from getting into down the circumstances that the feed bin caused the card to die or damage the screw axis, further reduces feeder's accident hidden danger.

Referring to fig. 4, the conveying mechanism 3 is arranged obliquely, the range of the inclination angle is 10-18 degrees, in the embodiment, the conveying mechanism 3 is an oblique belt conveyor, the inclination angle of the conveying mechanism 3 has an important influence on the transportation of wet sticky slag materials, and the wet sticky slag easily slides off in the transportation process due to an overlarge inclination angle; if the inclination angle is too small, the length of the conveying mechanism 3 is large, and the occupied area of the equipment is too large, which is not beneficial to reducing the cost.

The feeding device is positioned at the lower end of the conveying mechanism 3, the outlet of the discharging pipe is positioned above the conveying mechanism 3, and the higher end of the conveying mechanism 3 is positioned at the feeding end of the drying kiln 5.

A discharging hopper 4 is arranged at the higher end of the conveying mechanism 3, and a guide chute 9 is arranged at one end of the discharging hopper 4 close to the conveying mechanism 3. The setting of hopper 4 and baffle box 9 down can be guaranteed wet the sediment and get into drying kiln 5 in, avoid wet the sediment of gluing to drop in the drying kiln 5 outside, guarantee drying kiln 5's feed demand.

The implementation principle of the feeding device of the leaching residue drying kiln for zinc hydrometallurgy provided by the utility model is as follows: the method comprises the steps of firstly conveying materials to the side of a discharging hopper 1 by using engineering machinery such as an excavator or a forklift, scraping wet sticky slag by the excavator, checking and cleaning foreign matters, then conveying the wet sticky slag into the discharging hopper 1, enabling the wet sticky slag to flow into a shell through a sieve plate 8, axially pushing the wet sticky slag through a screw group 2, conveying the wet sticky slag into a tail section of a conveying mechanism 3, conveying the wet sticky slag into a feeding end of a drying kiln 5 for drying, conveying dried dry materials into a dry material bin through a discharging belt conveyor for storage and standby, conveying the dry materials into an electronic belt scale at the lower part of a proportioning bin through a travelling grab bucket of the dry material bin, metering and proportioning, and then conveying the mixture into a side-blown smelting furnace through the belt conveyor.

The feeding device for the wet zinc smelting leaching residue drying kiln can realize controllable and uniform feeding, has low investment cost and centralized occupied space, and fills the technical problem of large-material-quantity uniform feeding of the wet sticky residue drying kiln in China.

Claims

1. The feeding device of the zinc hydrometallurgy leaching residue drying kiln is characterized by comprising a feeding mechanism and a conveying mechanism (3), wherein the feeding mechanism is located below a horizon line and comprises a shell (6), a driving group (7) located on the outer side of the shell (6), a discharging hopper (1) located above the shell (6) and three spiral groups (2) located inside the shell (6), the spiral groups (2) are driven by the driving group (7), the spiral groups (2) are arranged in parallel and located on the same horizon line, and the rotating directions of two adjacent spiral groups (2) are opposite; a discharge pipe is arranged on one side of the spiral group (2) opposite to the driving group (7);

conveying mechanism (3) slope sets up, feeder is located the lower one end in conveying mechanism (3) position, the export of discharging pipe is located the top of conveying mechanism (3), the higher one end in conveying mechanism (3) position is located the pan feeding end of drying kiln (5).

2. The feeding device of the zinc hydrometallurgy leaching residue drying kiln according to the claim 1, wherein the blanking funnel (1) is formed by surrounding a discharging side plate (101) and three vertical material plates (102), and the discharging side plate (101) inclines to one side far away from the material plates (102).

3. The feeding device of the zinc hydrometallurgy leaching residue drying kiln according to claim 2, wherein the inclination angle of the discharging side plate (101) is 50-70 °.

4. The feeding device of the zinc hydrometallurgy leaching residue drying kiln according to the claim 1, wherein a screen plate (8) is arranged at the bottom of the blanking funnel (1).

5. The feeding device of the zinc hydrometallurgy leaching residue drying kiln according to claim 1, wherein the conveying mechanism (3) is an inclined belt conveyor.

6. The feeding device of the zinc hydrometallurgy leaching residue drying kiln according to the claim 1, wherein the inclination angle of the conveying mechanism (3) ranges from 10 degrees to 18 degrees.

7. The feeding device of the zinc hydrometallurgy leaching residue drying kiln according to the claim 1, wherein a discharging hopper (4) is arranged at the higher end of the conveying mechanism (3).

8. The feeding device of the zinc hydrometallurgy leaching residue drying kiln according to claim 7, wherein a material guide groove (9) is arranged at one end of the discharging hopper (4) close to the conveying mechanism (3).