Rotary kiln for recycling tin-containing materials

Abstract

The utility model relates to the related field of rotary kilns, in particular to a rotary kiln for recycling tin-containing materials, which comprises a support seat, a rotary kiln body, a processing component, a processing box, an exhaust fan, a first filter screen, a dust suction pipe, a cooling pipe, a connecting water pipe, an atomizing nozzle and the like. The cooling pipe is arranged to cool flue gas in the rotary kiln sucked into the dust suction pipe, the temperature of the flue gas is reduced, dust is more easily wetted and settled by clear water sprayed out by the atomization nozzles, the dust removal efficiency is improved, the flue gas can be subjected to multi-layer dust removal treatment through the multiple layers of connecting water pipes and the atomization nozzles, and the dust removal efficiency is improved. And through the arrangement of the second filter screen, the glass fiber filter cloth and the PTFE filter screen, the flue gas can be further subjected to multi-layer filtration and dust removal treatment, and the dust removal effect on the flue gas of the rotary kiln is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary kiln relevant field especially relates to a kind of rotary kiln for tin-containing material recovery. BACKGROUND

[0002] The rotary kiln for tin-containing material recovery is a kind of professional equipment specially used for processing waste or raw materials containing tin elements, so as to extract useful substances (such as tin) therefrom and reduce environmental pollution. This kind of rotary kiln is usually applied in the fields of electronic waste treatment, metal smelting by-product recovery, etc., and its working principle is mainly to decompose organic matter in the material by high-temperature heating, and to promote the metal components to melt or form a state easy to separate, so as to realize the effective recovery of valuable metal materials such as tin.

[0003] The existing patent with publication number CN221666672U discloses a rotary kiln top dust removal device, which can reduce the temperature and odor of waste gas by sucking it in for wet dust removal treatment, avoiding the single filter screen from causing poor dust removal effect of waste gas and polluting the environment when discharged into the air, thereby improving the dust removal effect of waste gas.

[0004] The existing patent directly sucks the flue gas in the rotary kiln for dust removal, and the sucked flue gas may be at a high temperature. If the temperature difference between water and flue gas is too large, the water may evaporate rapidly and fail to effectively capture particulate matter, thereby affecting the dust removal effect of flue gas. Moreover, only one layer of spray head sprays water to remove dust from flue gas, which is difficult to fully wet and settle the dust, thereby possibly affecting the dust removal effect of flue gas in the rotary kiln. SUMMARY

[0005] Therefore, in order to solve the above problems, the utility model provides a rotary kiln for tin-containing material recovery to solve the above technical problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a rotary kiln for tin-containing material recovery, comprising a support seat and a rotary kiln body mounted on the support seat, further comprising a treatment assembly arranged on the rotary kiln body, the treatment assembly comprising a treatment box mounted on the side surface of the rotary kiln body, an air extractor and a first filter screen mounted on the inside bottom of the treatment box, and a discharge pipe fixedly embedded in the top of the treatment box.

[0007] The air inlet end of the air extractor is inserted with a dust suction pipe connected with the tail gas discharge end of the rotary kiln body, and the air outlet end of the air extractor is opposite to the first filter screen, and the dust suction pipe is spirally wound with a cooling pipe along the circumferential outer surface.

[0008] The upper portion of the air extractor and the first filter screen is provided with a partition plate connected with the inner wall of the processing box, the end of the partition plate close to the first filter screen is provided with a gap with the inner wall of the processing box, the upper portion of the partition plate is provided with two or more guide plates, the guide plates are arranged in an inclined manner, a gas guide channel is arranged between one end of the guide plate and the inner wall of the processing box, adjacent two gas guide channels are staggered, the upper portion of each guide plate is provided with a connecting water pipe mounted on the inner wall of the processing box, and the bottom of each connecting water pipe is provided with a plurality of atomizing nozzles.

[0009] The inner side of the exhaust pipe is sequentially provided with a second filter screen, a glass fiber filter cloth and a PTFE filter screen from bottom to top.

[0010] Preferably, the cooling pipe is provided with an arc-shaped groove at one end close to the dust suction pipe, and the inner side of the arc-shaped groove is matched with the outer surface of the dust suction pipe.

[0011] Preferably, the bottommost gas guide channel is arranged between the inner wall of the processing box and the highest portion of the guide plate, the inner side of the through hole is connected to the lower end of the bottommost guide plate.

[0012] Preferably, the atomizing nozzles at the bottom of the connecting water pipe are distributed at equal intervals.

[0013] Preferably, a guide frame is arranged between the opposite sides of the air extractor and the first filter screen, the guide frame is connected to the air outlet end of the air extractor, a guide hole plate is mounted in the guide frame, and the size of the guide hole plate corresponds to the size of the first filter screen.

[0014] The present application has the following beneficial effects:

[0015] The cooling pipe can cool the flue gas in the rotary kiln sucked into the dust suction pipe, reduce the temperature of the flue gas, make the dust more easily wetted and settled by the water sprayed by the atomizing nozzles, improve the dust removal efficiency, and the multi-layer connecting water pipes and atomizing nozzles can perform multi-layer dust removal treatment on the flue gas, which is beneficial to the dust being fully wetted and settled, and the second filter screen, the glass fiber filter cloth and the PTFE filter screen can further perform multi-layer filtration and dust removal treatment on the flue gas, thereby improving the dust removal effect of the flue gas of the rotary kiln. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a structural schematic diagram of the present application;

[0017] Figure 2 is a front view and sectional structure schematic diagram of the processing assembly of the present application;

[0018] Figure 3 is a side view distribution structure schematic diagram of the atomizing nozzle of the present application;

[0019] Figure 4 is a schematic diagram of a side view of the cooling pipe according to the present application.

[0020] The support base-1, the rotary kiln body-2, the processing assembly-3, the processing box-31, the air extractor-32, the first filter screen-33, the dust suction pipe-34, the cooling pipe-35, the arc-shaped groove-36, the partition-37, the guide plate-38, the connecting water pipe-39, the atomizing nozzle-310, the discharge pipe-311, the second filter screen-312, the glass fiber filter cloth-313, the PTFE filter screen-314, the through hole-315, the guide frame-316, the guide hole plate-317, and the air guide channel-318. DETAILED DESCRIPTION

[0021] In order to further explain the technical scheme of the present application, the following specific embodiments are described in detail.

[0022] As shown in Figure 1 the present application provides a rotary kiln for tin-containing material recovery, which comprises a support base 1 and a rotary kiln body 2 installed on the support base 1;

[0023] Specifically, when in use, the material with tin is introduced into the interior of the rotary kiln body 2, and at the same time, the heating device in the rotary kiln body 2 is turned on to gradually increase the temperature in the kiln body to the required working temperature range. At this time, the organic matter, moisture and other non-metallic components in the tin-containing material are volatilized or decomposed, and the tin and other valuable metals are converted into a form that is easy to collect, such as liquid, under the corresponding conditions. These metal liquids can then be further purified and processed by cooling and solidification.

[0024] As shown in Figures 2 to 4 the present application also includes a processing assembly 3 for processing the flue gas in the rotary kiln body 2, which is arranged on the rotary kiln body 2. The processing assembly 3 comprises a processing box 31 fixedly locked on the side surface of the rotary kiln body 2, an air extractor 32 and a first filter screen 33 installed on the inside bottom of the processing box 31, and a discharge pipe 311 fixedly embedded in the top of the processing box 31.

[0025] The air inlet end of the air extractor 32 is inserted with the dust suction pipe 34 connected with the tail gas discharge end of the rotary kiln body 2, so as to facilitate the air extractor 32 to cooperate with the dust suction pipe 34 to suck out the flue gas from the tail gas discharge end of the rotary kiln body 2 for processing, and the air exhaust end of the air extractor 32 is opposite to the first filter screen 33, so as to facilitate the first filter screen 33 to perform the first layer of filtering treatment on the flue gas discharged by the air extractor 32. The dust suction pipe 34 is spirally wound with a cooling pipe 35 along the circumferential outer surface.

[0026] The upper part of the suction fan 32 and the first filter screen 33 is provided with a partition plate 37 connected horizontally with the inner wall of the treatment box 31, the partition plate 37 is provided with a gap close to the right end of the first filter screen 33 and the right end of the inner side of the treatment box 31, and the upper part of the partition plate 37 is provided with two or more guide plates 38, the guide plates 38 are arranged obliquely, and a gas guide channel 318 is arranged between one end of the guide plate 38 and the inner wall of the treatment box 31, adjacent two gas guide channels 318 are staggered, and the upper part of each guide plate 38 is provided with a connecting water pipe 39 horizontally installed on the inner wall of the treatment box 31, and the bottom of each connecting water pipe 39 is provided with a plurality of atomizing nozzles 310 for discharging clean water;

[0027] The inner side of the discharge pipe 311 is sequentially provided from bottom to top with a second filter screen 312, a glass fiber filter cloth 313 and a PTFE filter screen 314, the second filter screen 312 is used for filtering large particle impurities remaining in the flue gas, the glass fiber filter cloth 313 is used for removing dust with medium particle size, and the PTFE filter screen 314 is used for removing tiny dust particles, so as to realize multi-layer filtration of the discharged flue gas through the second filter screen 312, the glass fiber filter cloth 313 and the PTFE filter screen 314;

[0028] Among them, the atomizing nozzles 310 at the bottom of the connecting water pipe 39 are distributed at equal intervals, which facilitates more uniform spraying of water mist into the flue gas;

[0029] Among them, the lowest gas guide channel 318 is arranged between the highest part of the guide plate 38 and the inner wall of the treatment box 31, and the side surface of the treatment box 31 is provided with a through hole 315, the inner side of the through hole 315 is connected to the lower end of the lowest guide plate 38, which facilitates the discharge of used sewage in the treatment box 31 through the through hole 315;

[0030] In the embodiment, the cooling pipe 35 is provided with an arc-shaped groove 36 close to one end of the dust suction pipe 34, the inner side of the arc-shaped groove 36 is matched with the outer surface of the dust suction pipe 34, which increases the contact area of the cooling pipe 35 and the dust suction pipe 34, and facilitates the better absorption of the heat of the hot gas in the dust suction pipe 34 by the cold water in the cooling pipe 35;

[0031] In the embodiment, a guide frame 316 is arranged between the left and right opposite surfaces of the suction fan 32 and the first filter screen 33, the inner left end of the guide frame 316 is connected to the air outlet end of the suction fan 32, the outer diameter of the guide frame 316 gradually increases from left to right, the inner right end of the guide frame 316 is provided with a guide hole plate 317, the size of the guide hole plate 317 corresponds to the size of the first filter screen 33, which facilitates the uniform distribution of the flue gas in the suction fan 32 on the first filter screen 33 through the cooperation of the guide frame 316 and the guide hole plate 317;

[0032] The first filter screen 33 and the second filter screen 312 in the embodiment are made of stainless steel, which is corrosion resistant, high temperature resistant and has a long service life.

[0033] Specifically, in use, the ends of the connecting water pipe 39 and the cold water pipe 35 are connected to an external cold water introduction device, the flue gas at the exhaust end of the rotary kiln body 2 is sucked in through the cooperation of the air suction fan 32 and the dust suction pipe 34, the flue gas is cooled by the cold water flowing in the cooling pipe 35 when flowing in the dust suction pipe 34, and the flue gas is filtered through the first filter screen 312, the external cold water introduction device tank connects the water pipe 39 to introduce clean water, the clean water is sprayed downward in the form of atomization through the atomizing nozzle 310, the dust is fully wetted and settled by the water mist, so that the dust removal treatment of the flue gas is realized, and the flue gas after dust removal is discharged through the discharge pipe 311, and the flue gas is further filtered through the second filter screen 312, the glass fiber filter cloth 313 and the PTFE filter screen 314 in the discharge pipe 311, so as to reduce the pollution of the discharged flue gas to the environment.

[0034] The above is only the preferred example of the present application and is not used to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rotary kiln for tin-containing material recovery, comprising a supporting base and a rotary kiln body installed on the supporting base; characterized in that Further comprising a processing assembly arranged on the rotary kiln body, the processing assembly comprising a processing box installed on the side surface of the rotary kiln body, an air extractor and a first filter screen installed on the bottom inside of the processing box, and a discharge pipe fixedly embedded on the top of the processing box; The air inlet end of the air extractor is inserted with a dust suction pipe connected with the tail gas discharge end of the rotary kiln body, and the air exhaust end of the air extractor is opposite to the first filter screen, and the dust suction pipe is spirally wound with a cooling pipe along the outer surface thereof; An air baffle is arranged above the air extractor and the first filter screen and connected with the inner wall of the processing box, a gap is arranged between the end of the air baffle close to the first filter screen and the inner wall of the processing box, more than two guide plates are arranged above the air baffle, the guide plates are arranged in an inclined manner, an air guide channel is arranged between one end of the guide plates and the inner wall of the processing box, the adjacent two air guide channels are staggered, one connecting water pipe is arranged above each guide plate and installed on the inner wall of the processing box, and a plurality of atomizing nozzles are installed on the bottom of each connecting water pipe; The inner side of the discharge pipe is sequentially installed from bottom to top with a second filter screen, a glass fiber filter cloth and a PTFE filter screen.

2. The rotary kiln for recovering tin-containing material according to claim 1, characterized by: The end of the cooling pipe close to the dust suction pipe is provided with an arc-shaped groove, and the inner side of the arc-shaped groove is in close contact with the outer surface of the dust suction pipe.

3. The rotary kiln for recovering tin-containing material according to claim 1, characterized by: The bottommost air guide channel is arranged between the inner wall of the processing box and the highest end of the guide plate, the inner side of the through hole is connected to the lower end of the bottommost guide plate.

4. The rotary kiln for tin-bearing material recovery according to claim 1, characterized in that: The atomizing nozzles on the bottom of the connecting water pipe are distributed at equal intervals.

5. The rotary kiln for tin-bearing material recovery according to claim 1, characterized in that: A guide frame is arranged between the left and right opposite surfaces of the air extractor and the air extractor is connected to the air outlet end of the guide frame, a guide hole plate is installed in the guide frame, and the size of the guide hole plate corresponds to the size of the first filter screen.

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