A continuous lead tapping pot for a short kiln
By combining the design of high, medium and low pressure boilers and overflow troughs, the problems of difficult lead feeding operations and frequent spillage in short kilns have been solved, enabling continuous lead feeding and scum enrichment, and improving operational convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI CHUKAI METALLURGY
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-14
AI Technical Summary
The operation of lead feeding in short kilns is difficult, with frequent spillage of molten lead and high labor intensity in slag removal. Existing technology requires frequent rotation of the furnace body and movement of the lead pot.
The design employs a combination of high, medium, and low-temperature pots and an overflow trough. The high, medium, and low pots are hollow truncated pyramidal structures with a larger top and a smaller bottom. The overflow trough enables continuous flow of molten lead and accumulation of scum, avoiding the movement of the lead pots and the need for scum removal.
It enables the continuous discharge of three molten lead slurries without moving the lead pot, reducing lead spillage and the labor intensity of slag removal, and improving operational convenience.
Smart Images
Figure CN224487660U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of non-ferrous metal smelting. Background Technology
[0002] Short kilns, a common type of smelting furnace, are widely used in the recycled lead industry, typically for smelting lead-containing materials with complex properties and high levels of valuable metals such as antimony, tin, and copper. When charging lead into a short kiln, to prevent spillage, the lead pots are placed sequentially on a flatbed cart. While the charging spout is turned downwards, one end of the lead pot is simultaneously moved to directly below the spout to catch the flowing lead. Once a pot is nearly full, the charging spout is turned upwards while the other end of the lead pot is moved until no more lead flows out, completing the charging of that pot. This process is then repeated until all the lead in the short kiln has been emptied, following the order in which the lead pots are placed. The inventors discovered through research that the above-mentioned operating mode has the following drawbacks: First, it is difficult to operate. At the beginning and end of each lead-filling process, the lead-filling pot needs to be controlled to move with the rotating lead-filling spout to keep it directly below it. Even experienced and skilled operators find it difficult to ensure that the molten lead does not spill at all. Second, because the lead pot needs to be switched multiple times, the frequent movement of the flatbed cart can also cause the molten lead to spill. Third, in some cases, it is necessary to remove the slag from the lead-filling pot. Under this operating mode, slag needs to be removed from each batch of lead, which is labor-intensive. Summary of the Invention
[0003] This invention addresses the shortcomings of conventional lead-feeding methods by providing a continuous lead-feeding pot for short kilns. It utilizes a combination of high, medium, and low-temperature pots and an overflow trough, avoiding the problems of frequent furnace rotation, moving the flatbed cart, and high labor intensity in slag removal that exist in conventional lead-feeding processes.
[0004] The technical solution adopted by this utility model to solve its technical problem is: a continuous lead-feeding pot for a short kiln, characterized in that: it includes a high pot, a medium pot, and a low pot placed below the rotation path of the lead-feeding port of the short kiln for receiving the lead liquid flowing out of the lead-feeding port;
[0005] The high-pot, medium-pot, and low-pot all have a hollow, frustum-shaped structure that is larger at the top and smaller at the bottom.
[0006] The high pot is located below the lowest point of the lead outlet rotation of the short kiln.
[0007] The high-pressure boiler is provided with a side overflow trough at the side opening; the outer end of the side overflow trough is located inside the edge of the middle boiler so that when the lead liquid level in the high-pressure boiler exceeds the side opening, the lead liquid can flow into the middle boiler through the side overflow trough.
[0008] The middle pot is provided with a side overflow trough at the side opening. The outer end of the side overflow trough is located inside the edge of the lower pot so that when the lead liquid level in the middle pot exceeds the side opening, the lead liquid can flow through the side overflow trough to the lower pot and accumulate scum.
[0009] The side opening of the low-pressure vessel is provided with an overflow trough to facilitate skimming scum from the molten lead.
[0010] The overflow channels on the sides of the high-pressure pot, the medium-pressure pot, and the low-pressure pot are all the same size and have a V-shaped cross-section.
[0011] The length L of the overflow trough on the side of the high pot, the overflow trough on the side of the medium pot, and the overflow trough on the side of the low pot is 200mm to 150mm, the width m is 180mm to 250mm, and the height h is 40mm to 70mm.
[0012] The hollow sections of the tall, medium, and low pots are truncated pyramidal structures, with the top section being larger than the bottom section.
[0013] The height H1 of the high pot is 550mm to 700mm, the height H2 of the medium pot is 450mm to 600mm, and the height H3 of the low pot is 350mm to 500mm, with H1 > H2 > H3.
[0014] The upper surfaces of the high-boiler, medium-boiler, and low-boiler are identical in shape, with an outer contour length D of 1150mm to 1300mm and an outer contour width W of 750mm to 900mm.
[0015] The length d1 of the lower surface of the high pot is 750mm to 850mm and the width W1 is 450mm to 550mm; the length d2 of the lower surface of the medium pot is 800mm to 900mm and the width W2 is 500mm to 600mm; the length d3 of the lower surface of the low pot is 900mm to 1000mm and the width W3 is 550mm to 650mm; and d1 < d2 < d3, W1 < W2 < W3.
[0016] The walls of the high-pressure pot, medium-pressure pot, and low-pressure pot are of uniform thickness; the wall thickness T is between 40mm and 65mm.
[0017] This utility model provides a continuous lead-feeding pot for short kilns. By coordinating three pots (high, medium, and low) and an overflow trough during the lead-feeding process, the lead volume of three pots can be discharged at once without moving the lead pots, which has the advantage of convenient lead-feeding. Furthermore, since the scum in the molten lead is mainly concentrated on the surface, and the lead in the lower pot is overflowed from the higher pot, it also helps to enrich the scum in the lower pot. This solves the problem that conventional lead-feeding pots require rotating the furnace and moving the lead pots after each batch of lead is discharged, as well as the problem of scum removal after each batch of lead is discharged, effectively improving the convenience of lead-feeding operation in short kilns. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is the front view of this utility model.
[0020] Figure 3 yes Figure 2 The right view.
[0021] Explanation of reference numerals in the attached diagram: 1. High pot; 2. Medium pot; 3. Low pot; 4. Side overflow channel of high pot; 5. Side overflow channel of medium pot; 6. Side overflow channel of low pot. H1. Height of high pot; H2. Height of medium pot; H3. Height of low pot; D. Outer contour length of the upper surface of high / medium / low pot; W. Outer contour width of the upper surface of high / medium / low pot; d1. Length of the lower surface of high pot; d2. Length of the lower surface of medium pot; d3. Length of the lower surface of low pot; W1. Width of the lower surface of high pot; W2. Width of the lower surface of medium pot; W3. Width of the lower surface of low pot; T. Wall thickness of high / medium / low pot; L. Length of the side overflow channel of high pot; m. Width of the side overflow channel of high pot; h. Height of the side overflow channel of high pot. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the present invention.
[0023] like Figure 1 , Figure 2 , Figure 3 As shown, this utility model provides a continuous lead-filling pot for a short kiln, including a high pot 1, a medium pot 2, and a low pot 3. The high pot 1, medium pot 2, and low pot 3 are arranged in sequence. The high pot 1 has a side overflow trough 4 at its side opening, the medium pot 2 has a side overflow trough 5 at its side opening, and the low pot 3 has a side overflow trough 6 at its side opening. The high, medium, and low pots are made of the same material, either cast iron or stainless steel. They are hollow, with a smooth frustum shape that is wider at the top and narrower at the bottom; the hollowed-out parts are also smooth frustum shapes that are wider at the top and narrower at the bottom. The thickness inside the pot is the same throughout; the high, medium, and low pots all have the same thickness, with a wall thickness T of 50mm.
[0024] The height of the tall pot 1 (H1) is 600mm, the height of the medium pot 2 (H2) is 500mm, and the height of the low pot 3 (H3) is 400mm. The upper surfaces of the tall pot 1, medium pot 2, and low pot 3 have the same shape. The outer contour length (D) of the upper surface of each pot is 1200mm, and the outer contour width (W) is 800mm. The lower surface length (d1) of the tall pot 1 is 800mm, and the width (W1) is 500mm; the lower surface length (d2) of the medium pot 2 is 850mm, and the width (W2) is 550mm; the lower surface length (d3) of the low pot 3 is 900mm, and the width (W3) is 600mm. The overflow channels on the sides of the tall pot 1, medium pot 2, and low pot 3 are all the same size, connected in a V-shape at the opening on the side of the pot. The overflow channel length (L) is 180mm, the width (m) is 220mm, and the height (h) is 55mm.
[0025] In use, this invention first places the high pot 1, medium pot 2, and low pot 3 onto a flatbed cart in sequence, ensuring that the edge of the overflow trough 4 on the side of the high pot 1 is inside the rim of the medium pot 2, and the edge of the overflow trough 5 on the side of the medium pot 2 is inside the rim of the low pot 3. Then, the high pot 1 is moved directly below the lead-feeding opening, requiring no further movement. Next, the lead-feeding opening of the short kiln is opened and slowly rotated to its lowest point from the direction of the medium pot 2 and low pot 3, initiating lead feeding. Any spilled molten lead will be caught by the medium pot 2 and low pot 3. When the molten lead level in the high pot 1 exceeds the side opening of the high pot 1, the molten lead will flow through the overflow trough 4 on the side of the high pot 1 to the medium pot 2. Similarly, when the molten lead level in the medium pot 2 exceeds the side opening of the medium pot 2, the molten lead will flow through the overflow trough 5 on the side of the medium pot 2 to the low pot 3. Since the scum in the molten lead is mainly concentrated on the surface, and the lead in the low pot is from the overflow of the high pot, most of the scum will remain on the surface of the low pot 3 after lead feeding is complete. Since the surface of the high pot 1 and the medium pot 2 is constantly overflowing, there is basically no scum. The scum on the surface of the low pot 3 can be skimmed off by using the overflow channel 6 on the side of the low pot 3.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A continuous lead-feeding pot for a short kiln, characterized in that: Includes a high pot (1), a medium pot (2), and a low pot (3) placed below the rotating path of the lead outlet of the short kiln to receive the lead liquid flowing out of the lead outlet; The high pot (1), medium pot (2), and low pot (3) are all hollow quadrangular frustum structures with a larger top and a smaller bottom. The high pot (1) is located below the lowest point of the lead outlet rotation of the short kiln; The high pot (1) is provided with a side overflow trough (4) at the side opening; the outer end of the side overflow trough (4) is located inside the edge of the middle pot (2) so that when the lead liquid level in the high pot exceeds the side opening of the high pot (1), the lead liquid can flow through the side overflow trough (4) to the middle pot (2). The middle pot (2) is provided with a side overflow trough (5) at the side opening. The outer end of the side overflow trough (5) is located inside the edge of the lower pot (3) so that when the lead liquid level in the middle pot exceeds the side opening of the middle pot (2), the lead liquid can flow through the side overflow trough (5) to the lower pot (3) and accumulate scum. The low pot (3) is provided with a side overflow trough (6) at the side opening to facilitate skimming scum from the lead liquid.
2. The continuous lead-feeding pot for short kilns according to claim 1, characterized in that: The overflow troughs (4), (5), and (6) on the side of the high pot are the same size and have a V-shaped cross section.
3. The continuous lead-feeding pot for short kilns according to claim 1 or 2, characterized in that: The length L of the overflow trough (4) on the side of the high pot, the overflow trough (5) on the side of the medium pot, and the overflow trough (6) on the side of the low pot is 200mm to 150mm, the width m is 180mm to 250mm, and the height h is 40mm to 70mm.
4. The continuous lead-feeding pot for short kilns according to claim 1, characterized in that: The hollow parts of the high pot (1), medium pot (2), and low pot (3) are truncated pyramidal structures with a larger top and a smaller bottom.
5. The continuous lead-feeding pot for short kilns according to claim 1, characterized in that: The height H1 of the high pot (1) is 550mm to 700mm, the height H2 of the medium pot (2) is 450mm to 600mm, and the height H3 of the low pot (3) is 350mm to 500mm, and H1 > H2 > H3.
6. The continuous lead-feeding pot for short kilns according to claim 5, characterized in that: The upper surfaces of the high pot (1), medium pot (2), and low pot (3) have the same shape, with the outer contour length D of the upper surface being 1150mm to 1300mm and the outer contour width W of the upper surface being 750mm to 900mm.
7. The continuous lead-feeding pot for short kilns according to claim 5 or 6, characterized in that: The lower surface length d1 of the high pot (1) is 750mm to 850mm and the width W1 is 450mm to 550mm; the lower surface length d2 of the medium pot (2) is 800mm to 900mm and the width W2 is 500mm to 600mm; the lower surface length d3 of the low pot (3) is 900mm to 1000mm and the width W3 is 550mm to 650mm; and d1 < d2 < d3, W1 < W2 < W3.
8. The continuous lead-feeding pot for short kilns according to claim 1, characterized in that: The high pot (1), medium pot (2), and low pot (3) have uniform wall thickness; the wall thickness T is between 40mm and 65mm.