Chlorine leaching material treatment device

Abstract

The utility model provides a chlorine immersion material processing device which comprises a rotary type sulfur burning furnace, one end of the rotary type sulfur burning furnace is provided with a hopper, the bottom of the hopper is connected with a material conveying pipe, the material conveying pipe is connected with a screw feeder used for conveying materials into the rotary type sulfur burning furnace, one end of the rotary type sulfur burning furnace far away from the hopper is provided with a kiln tail cover, and the other end of the rotary type sulfur burning furnace far away from the hopper is connected with a screw feeder. The kiln tail cover is connected with a first gas conveying pipe, the first gas conveying pipe is connected with a quench tower, the quench tower is connected with a second gas conveying pipe, the second gas conveying pipe is connected with a turbulent impact tower, the end impact tower is connected with a third gas conveying pipe, the third gas conveying pipe is connected with a washing tower, and the washing tower is connected with an exhaust pipe. According to the utility model, the chlorine leaching material is enriched through the rotary sulfur-burning furnace, and the air conveying pipe is arranged to convey hot air into the rotary sulfur-burning furnace, so that the heating treatment effect is improved, gas in the rotary sulfur-burning furnace moves towards the discharge hole, and flue gas is prevented from flowing out of the feed hole to pollute the surrounding environment.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment technology and relates to a chlorine immersion material treatment device. Background Technology

[0002] In the hydrometallurgical production of non-ferrous metals, the solid material chlorinated residue after nickel electrolytic copper slag is leached with chlorine gas contains nickel, copper, sulfur, and rare and precious metals. Its chemical composition and phase composition are complex, making it difficult to process. Large-scale accumulation of chlorinated residue pollutes the environment. Most existing treatment methods involve heating and enriching the chlorinated residue. In order to quickly reach the corresponding temperature during the heating process, a large amount of fuel is required. In addition, the chlorinated residue has a high sulfur content, and the flue gas generated during the treatment carries sulfur vapor, which releases a lot of heat. Therefore, it is easy to waste the heat in the flue gas. Utility Model Content

[0003] The purpose of this invention is to address the problems of high fuel consumption and low resource utilization in existing chlorine leaching processes, and to provide a chlorine leaching process device.

[0004] Therefore, the present invention adopts the following technical solution:

[0005] A chlorination treatment device includes a rotary sulfur furnace, with an inlet at one end and an outlet at the other. A hopper is located near the inlet, and a conveying pipe is connected to the bottom of the hopper. The conveying pipe is connected to a screw feeder for feeding material into the rotary sulfur furnace. A kiln tail hood is located at the outlet of the rotary sulfur furnace. The kiln tail hood is connected to a first gas conveying pipe, which is connected to a quench tower. The quench tower is connected to a second gas conveying pipe, which is connected to a turbulent jet tower. The turbulent jet tower is connected to a third gas conveying pipe, which is connected to a scrubbing tower. The scrubbing tower is connected to an exhaust pipe.

[0006] Furthermore, a discharge pipe is connected to the bottom of the kiln tail hood, and a discharge valve is provided on the discharge pipe.

[0007] Furthermore, a heat exchange box is provided above the kiln tail hood, and the first gas supply pipe passes through the heat exchange box. The first gas supply pipe forms a spiral heat exchange section inside the heat exchange box. One side of the heat exchange box is connected to an air inlet pipe, and the other side is connected to an air supply pipe for supplying air to the rotary sulfur combustion furnace. The air supply pipe is equipped with an electric heating wire.

[0008] Furthermore, the outer wall of the heat exchange section is provided with multiple heat exchange fins along the length of the heat exchange section.

[0009] Furthermore, a fan is provided at the end of the air inlet pipe away from the heat exchange box.

[0010] Furthermore, the quench tower is connected to a first drain pipe, the first drain pipe is connected to a filter press, the filter press is connected to a second drain pipe and a third drain pipe, the second drain pipe is connected to an end-flushing tower, and the third drain pipe is connected to a washing tower.

[0011] Furthermore, the first drain pipe is equipped with a first drain valve, the second drain pipe is equipped with a second drain valve, and the third drain pipe is equipped with a third drain valve.

[0012] The beneficial effects of this utility model are as follows:

[0013] (1) The chlorinated material is enriched by a rotary sulfur furnace and hot air is delivered into the rotary sulfur furnace through an air duct to improve the heating effect and make the gas in the rotary sulfur furnace move towards the discharge port to prevent the flue gas from flowing out of the feed port and polluting the surrounding environment.

[0014] (2) A heat exchange box is set up to exchange heat with the high-temperature flue gas generated in the rotary sulfur combustion furnace, and the heat is transferred back to the rotary sulfur combustion furnace to prevent heat loss and waste, and further save resources. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of part A in the middle;

[0017] Figure 3 for Figure 1 Enlarged view of part B in the middle;

[0018] In the diagram, 1-rotary sulfur combustion furnace, 2-feed inlet, 3-discharge outlet, 4-hopper, 5-feeding pipe, 6-screw feeder, 7-kiln tail hood, 8-first gas supply pipe, 801-heat exchange section, 9-quench tower, 10-second gas supply pipe, 11-turbulent flow tower, 9-third gas supply pipe, 10-second gas supply pipe, 11-turbulent flow tower, 12-third gas supply pipe, 13-washing tower, 14-exhaust pipe, 15-first drain pipe, 16-filter press, 17-second drain pipe, 18-third drain pipe, 19-heat exchange box, 20-air inlet pipe, 21-air supply pipe, 22-heating wire, 23-fan, 24-discharge pipe, 25-discharge valve, 26-heat exchange fins, 27-first drain valve, 28-second drain valve, 29-third drain valve. Detailed Implementation

[0019] The present invention will now be described in detail with reference to the accompanying drawings:

[0020] like Figure 1-3As shown, a chlorinated material processing device includes a rotary sulfur furnace 1. One end of the rotary sulfur furnace 1 forms a feed inlet 2, and the other end forms a discharge outlet 3. The rotary sulfur furnace 1 can be a conventional rotary sulfur furnace. Near the feed inlet 2, the rotary sulfur furnace 1 is equipped with a hopper 4 for holding the chlorinated material. The bottom of the hopper 4 is connected to a conveying pipe 5, which is connected to a screw feeder 6 for conveying material into the rotary sulfur furnace 1. Chlorinated material can be fed into the rotary sulfur furnace 1 through the feed inlet 2. A screw feeder 6 is used to add material to the rotary sulfur furnace 1, saving manpower. The rotary sulfur furnace 1 can desulfurize and enrich the chlorinated material, and the heating process of the rotary sulfur furnace 1 generates sulfur dioxide gas. The discharge port of the rotary sulfur furnace 1 is equipped with a kiln tail hood 7, which can be a conventional kiln tail hood. The kiln tail hood 7 prevents the generated sulfur dioxide gas from directly escaping into the atmosphere. In the gas, the kiln tail hood 7 is connected to the first gas supply pipe 8, through which the sulfur dioxide gas generated in the rotary sulfur combustion furnace 1 can be output. In addition, the bottom of the kiln tail hood 7 is connected to the discharge pipe 24, which is equipped with a discharge valve 25. The chlorinated material after heat treatment can be discharged from the rotary sulfur combustion furnace 1 through the discharge pipe 24. The first gas supply pipe 8 is connected to the quench tower 9, which can be a conventional quench tower. The quench tower 9 is used to rapidly cool the sulfur dioxide gas. The quench tower 9 is connected to the second gas supply pipe 10, which is connected to the turbulent jet tower 11. The cooled sulfur dioxide gas can enter the turbulent jet tower 11 through the second gas supply pipe 10. The turbulent jet tower 11 is connected to the third gas supply pipe 12, which is connected to the scrubbing tower 13. The scrubbing tower 13 is connected to the exhaust pipe 14, through which the scrubbing gas can be input into the acid production system for appropriate utilization.

[0021] In addition, the quench tower 9 is connected to a first drain pipe 15, which is connected to a filter press 16. The filter press 16 is connected to a second drain pipe 17 and a third drain pipe 18. The second drain pipe 17 is connected to the end-flushing tower 11, and the third drain pipe 18 is connected to the washing tower 13. The solutions in the quench tower 9, the end-flushing tower 11, and the washing tower 13 can be transported to the filter press 16 through the first drain pipe 15, the second drain pipe 17, and the third drain pipe 18. The waste residue is obtained by filtration through the filter press 16 and can be sent to the smelting process to recover valuable metals. In addition, the first drain pipe 15 is equipped with a first drain valve 27, the second drain pipe 17 is equipped with a second drain valve 28, and the third drain pipe 18 is equipped with a third drain valve 29.

[0022] To improve the heating effect of the rotary sulfur combustion furnace 1, a heat exchange box 19 is provided above the kiln tail hood 7. The first gas supply pipe 8 passes through the heat exchange box 19, and the first gas supply pipe 8 forms a spiral heat exchange section 801 inside the heat exchange box 19. One side of the heat exchange box 19 is connected to an air inlet pipe 20, and the other side is connected to an air supply pipe 21 for supplying air into the rotary sulfur combustion furnace 1. An electric heating wire 22 is provided inside the air supply pipe 21. The end of the air inlet pipe 20 away from the heat exchange box 19 is equipped with a heating element 22. The blower 23, under the action of the blower 23, can deliver gas into the heat exchange box 19 through the air inlet pipe 20. The gas exchanges heat with the heat exchange section 801 in the heat exchange box 19, raising the temperature. It then enters the air supply pipe 21 and is input into the rotary sulfur combustion furnace 1 to increase the temperature inside the rotary sulfur combustion furnace 1, thereby improving the enrichment effect and efficiency of the chlorinated material. In order to further improve the heat exchange effect, the outer wall of the heat exchange section 801 is provided with multiple heat exchange fins 26 along the length of the heat exchange section.

[0023] The method of using this utility model is as follows:

[0024] Before adding the chlorinated material into the rotary sulfur combustion furnace 1, the blower 23 and heating wire 22 are first turned on. Hot air is introduced into the rotary sulfur combustion furnace 1 through the air supply pipe 21 for preheating. At the same time, the gas in the rotary sulfur combustion furnace 1 moves from the feed inlet 2 to the discharge outlet 3. Then, the screw feeder 6 is turned on to feed the chlorinated material in the hopper 4 into the rotary sulfur combustion furnace 1 for heating treatment, thereby desulfurization and enrichment. Preheating by air supply can improve the processing efficiency and enrichment effect. After treatment, the chlorinated material enters the kiln tail hood 7 through the discharge outlet 3 and is finally discharged through the discharge pipe 24 for subsequent processing. The sulfur dioxide-containing flue gas generated after heating moves towards the discharge outlet 3 and enters the kiln tail hood 7 under the action of wind. In addition, the air supply from the feed inlet 2 to the rotary sulfur combustion furnace 1 through the air supply pipe 21 can also prevent the flue gas from flowing out of the feed inlet 2. The flue gas, which pollutes the surrounding environment, is transported to the quench tower 9 through the first gas supply pipe 8. While passing through the first gas supply pipe 8, the flue gas heat exchange section 801 exchanges heat with the gas in the heat exchange box 19, which lowers the flue gas temperature and raises the temperature of the gas entering the air supply pipe 21. This effectively utilizes the heat of the flue gas and further increases the heat of the gas entering the rotary sulfur combustion furnace 1, while preventing the waste of heat in the flue gas. The flue gas containing sulfur dioxide after heat exchange is cooled and washed through the quench tower 9, the turbulent flush tower 11, and the scrubbing tower 13 to remove impurities. Then, it is input into the acid production system through the exhaust pipe 14 for appropriate utilization. At the same time, the washing waste liquid in the quench tower 9, the turbulent flush tower 11, and the scrubbing tower 13 is transported to the filter press 16 through the first drain pipe 15, the second drain pipe 17, and the third drain pipe 18, respectively, for filter pressing to collect the substances and achieve efficient resource recovery.

Claims

1. A chloridizing material treatment device characterized by comprising: The rotary sulfur combustion furnace (1) is provided with a feeding port (2) at one end and a discharging port (3) at the other end, a hopper (4) is arranged near the feeding port (2) of the rotary sulfur combustion furnace (1), the bottom of the hopper (4) is connected with a feeding pipe (5), the feeding pipe (5) is connected with a screw feeder (6) for feeding into the rotary sulfur combustion furnace (1), the discharging port (3) of the rotary sulfur combustion furnace (1) is provided with a kiln tail cover (7), the kiln tail cover (7) is connected with a first gas conveying pipe (8), the first gas conveying pipe (8) is connected with a quenching tower (9), the quenching tower (9) is connected with a second gas conveying pipe (10), the second gas conveying pipe (10) is connected with a turbulent tower (11), the turbulent tower (11) is connected with a third gas conveying pipe (12), the third gas conveying pipe (12) is connected with a washing tower (13), and the washing tower (13) is connected with an exhaust pipe (14).

2. A chloridizing material handling apparatus according to claim 1 wherein, The bottom of the kiln tail cover (7) is connected with a discharging pipe (24), and the discharging pipe (24) is provided with a discharging valve (25).

3. A chloridizing material handling apparatus according to claim 1 wherein, A heat exchange box (19) is arranged above the kiln tail cover (7), the first gas conveying pipe (8) penetrates the heat exchange box (19), the first gas conveying pipe (8) forms a heat exchange section (801) in the form of a spiral structure in the heat exchange box (19), one side of the heat exchange box (19) is connected with an air inlet pipe (20), the other side is connected with a wind conveying pipe (21) for feeding air into the rotary sulfur combustion furnace (1), and an electric heating wire (22) is arranged in the wind conveying pipe (21).

4. A chloridizing material handling apparatus according to claim 3 wherein, A plurality of heat exchange fins (26) are arranged on the outer wall of the heat exchange section (801) along the length direction of the heat exchange section (801).

5. A chloridizing material handling apparatus according to claim 3 wherein, One end of the air inlet pipe (20) away from the heat exchange box (19) is provided with a fan.

6. A chloridizing material handling apparatus according to claim 1 wherein, The quenching tower (9) is connected with a first liquid discharging pipe (15), the first liquid discharging pipe (15) is connected with a filter press (16), the filter press (16) is connected with a second liquid discharging pipe (17) and a third liquid discharging pipe (18), the second liquid discharging pipe (17) is connected with the turbulent tower (11), and the third liquid discharging pipe (18) is connected with the washing tower (13).

7. A chloridizing material handling apparatus according to claim 6 wherein, A first liquid discharging valve (27) is arranged on the first liquid discharging pipe (15), a second liquid discharging valve (28) is arranged on the second liquid discharging pipe (17), and a third liquid discharging valve (29) is arranged on the third liquid discharging pipe (18).

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