Chlorine leaching material treatment device
By designing a chlorine precipitation treatment device including a rotary sulfur-burning furnace and a heat exchanger, the problems of large fuel consumption and heat waste in the existing treatment methods are solved, and more efficient chlorine precipitation treatment and resource utilization are achieved.
Patent Information
- Application Number
- CN202510229931.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-04-25
AI Technical Summary
The existing chlorine precipitation treatment methods consume a large fuel, have low resource utilization, and the heat in the flue gas is easily wasted, resulting in environmental pollution and waste of resources.
A chlorine precipitation treatment device including a rotary sulfur burning furnace and a heat exchanger is designed. The chlorine impregnation is enriched by a rotary sulfur-burning furnace, and hot air is transported into the furnace using an air supply duct to improve heating efficiency. At the same time, a heat exchanger box is set up to exchange heat to the high-temperature flue gas, and the heat is returned to the furnace to avoid heat loss.
It improves the heating treatment effect of chlorine impregnation, reduces fuel consumption, improves resource utilization, and effectively prevents heat waste in flue gas and reduces environmental pollution.
Smart Images
Figure CN119879559A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of metallurgical equipment and relates to a chlorine soaking material processing device. Background Art
[0002] In the hydrometallurgical production of non-ferrous metals, the solid material chlorine soaked material after leaching copper slag from nickel electrolysis with chlorine contains nickel, copper, sulfur and rare precious metals. It has complex chemical composition and physical phase, is difficult to handle, and accumulates in large quantities, polluting the environment. Most of the existing treatment methods are to heat and enrich the chlorine soaked material. In order to quickly reach the corresponding temperature during the heating process, a large amount of fuel is consumed. In addition, the chlorine soaked material has a high sulfur content, and the flue gas generated during the treatment carries sulfur vapor, which releases a high amount of heat, and therefore often easily causes heat waste in the flue gas. Summary of the invention
[0003] The object of the present invention is to provide a chlorine soak material processing device in view of the problems of large fuel consumption and low resource utilization rate in the existing chlorine soak material processing in the background technology.
[0004] To this end, the present invention adopts the following technical solutions: A chlorine soak material processing device comprises a rotary sulfur-burning furnace, wherein a feed port is formed at one end of the rotary sulfur-burning furnace and a discharge port is formed at the other end, a hopper is provided near the feed port, a feed pipe is connected to the bottom of the hopper, and a screw feeder is connected to the feed pipe for feeding materials into the rotary sulfur-burning furnace; a kiln tail hood is provided at the discharge port of the rotary sulfur-burning furnace, the kiln tail hood is connected to a first gas pipe, the first gas pipe is connected to a quenching tower, the quenching tower is connected to a second gas pipe, the second gas pipe is connected to a turbulent tower, the end turbulence tower is connected to a third gas pipe, the third gas pipe is connected to a washing tower, and the washing tower is connected to an exhaust pipe.
[0005] Furthermore, a discharge pipe is connected to the bottom of the kiln tail cover, and a discharge valve is provided on the discharge pipe.
[0006] Furthermore, a heat exchange box is provided above the kiln tail hood, and the first gas pipe passes through the heat exchange box. The first gas pipe forms a heat exchange section with a spiral structure in 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 pipe for supplying air to the rotary sulfur-burning furnace. An electric heating wire is provided in the air pipe.
[0007] Furthermore, the outer wall of the heat exchange section is provided with a plurality of heat exchange fins along the length direction of the heat exchange section.
[0008] Furthermore, a fan is provided at one end of the air inlet pipe away from the heat exchange box.
[0009] Furthermore, the quenching 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.
[0010] Furthermore, the first liquid discharge pipe is provided with a first liquid discharge valve, the second liquid discharge pipe is provided with a second liquid discharge valve, and the third liquid discharge pipe is provided with a third liquid discharge valve.
[0011] The beneficial effects of the present invention are: (1) The chlorine soaked material is enriched by a rotary sulfur burning furnace, and an air duct is set to transport hot air into the rotary sulfur burning furnace to improve the heating treatment effect and make the gas in the rotary sulfur burning furnace move to the discharge port to prevent the smoke from flowing out from the feed port and polluting the surrounding environment.
[0012] (2) A heat exchange box is set up to exchange heat with the high-temperature flue gas generated in the rotary sulfur-burning furnace, and the heat is transferred back to the rotary sulfur-burning furnace to prevent heat loss and waste, thereby further saving resources. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 for Figure 1 A partial enlarged view of the middle A part; Figure 3 for Figure 1 A partial enlarged view of the middle B part; In the figure, 1-rotary sulfur-burning furnace, 2-feeding port, 3-discharging port, 4-hopper, 5-feeding pipe, 6-screw feeder, 7-kiln tail cover, 8-first gas pipe, 801-heat exchange section, 9-quenching tower, 10-second gas pipe, 11-turbulence tower, 9-third gas pipe, 10-second gas pipe, 11-turbulence tower, 12-third gas 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 pipe, 22-electric 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 DESCRIPTION
[0014] The present invention is described in detail below in conjunction with the accompanying drawings: like Figure 1-3As shown, a chlorine soak material processing device includes a rotary sulfur burning furnace 1, one end of the rotary sulfur burning furnace 1 forms a feed inlet 2, and the other end forms a discharge port 3. The rotary sulfur burning furnace 1 can be an existing conventional rotary sulfur burning furnace. The rotary sulfur burning furnace 1 is provided with a hopper 4 for containing chlorine soak material near the feed inlet 2. The bottom of the hopper 4 is connected to a feeding pipe 5, and the feeding pipe 5 is connected to a screw feeder 6 for feeding material into the rotary sulfur burning furnace 1. The screw feeder 6 The chlorine soaked material can be transported into the rotary sulfur burning furnace 1 through the feed port 2, and the spiral feeder 6 is used to feed the rotary sulfur burning furnace 1, which can save manpower. The rotary sulfur burning furnace 1 can desulfurize and enrich the chlorine soaked material, and sulfur dioxide gas can be generated by heating the rotary sulfur burning furnace 1. The outlet of the rotary sulfur burning furnace 1 is provided with a kiln tail cover 7, and the kiln tail cover 7 can use the existing conventional kiln tail cover, and the kiln tail cover 7 can prevent the generated sulfur dioxide gas from being directly emitted into the air. In the gas, the kiln tail hood 7 is connected to the first gas pipe 8, and the sulfur dioxide gas generated in the rotary sulfur-burning furnace 1 can be output through the first gas pipe 8. In addition, the bottom of the kiln tail hood 7 is connected to a discharge pipe 24, and the discharge pipe 24 is provided with a discharge valve 25. The chlorine-impregnated material after heating treatment can be discharged from the rotary sulfur-burning furnace 1 through the discharge pipe 24. The first gas pipe 8 is connected to a quenching tower 9, and the quenching tower 9 can adopt an existing conventional quenching tower. The quenching tower 9 is used to quickly cool the sulfur dioxide gas. The quenching tower 9 is connected to a second gas pipe 10, and the second gas pipe 10 is connected to a turbulent tower 11. The sulfur dioxide gas after cooling can enter the turbulent tower 11 through the second gas pipe 10. The turbulent tower 11 is connected to a third gas pipe 12, and the third gas pipe 12 is connected to a washing tower 13. The washing tower 13 is connected to an exhaust pipe 14. The washed sulfur dioxide gas can be input into the acid-making system through the exhaust pipe 14 for corresponding utilization.
[0015] In addition, the quenching tower 9 is connected to a first drain pipe 15, the first drain pipe 15 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 quenching tower 9, the turbulent 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 the waste residue can be sent to the smelting process to recover valuable metals. In addition, a first drain valve 27 is provided on the first drain pipe 15, a second drain valve 28 is provided on the second drain pipe 17, and a third drain valve 29 is provided on the third drain pipe 18.
[0016] In order to improve the heating effect of the rotary sulfur-burning furnace 1, a heat exchange box 19 is provided above the kiln tail cover 7, and the first gas delivery pipe 8 passes through the heat exchange box 19. The first gas delivery pipe 8 forms a spiral heat exchange section 801 in 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 delivery pipe 21 for supplying air to the rotary sulfur-burning furnace 1. The air delivery pipe 21 is provided with an electric heating wire 22, and the end of the air inlet pipe 20 away from the heat exchange box 19 is provided with The fan 23 can deliver gas to the heat exchange box 19 through the air inlet pipe 20 under the action of the fan 23. The gas exchanges heat with the heat exchange section 801 in the heat exchange box 19 to increase the temperature. The gas enters the air delivery pipe 21 and is input into the rotary sulfur-burning furnace 1 to increase the temperature in the rotary sulfur-burning furnace 1, thereby improving the enrichment effect and efficiency of the chlorine soak material. In order to further improve the heat exchange effect, the outer wall of the heat exchange section 801 is provided with a plurality of heat exchange fins 26 along the length direction of the heat exchange section.
[0017] The use of the present invention is as follows: Before adding the chlorine soaked material into the rotary sulfur-burning furnace 1, first turn on the fan 23 and the electric heating wire 22, and input hot air into the rotary sulfur-burning furnace 1 through the air supply pipe 21 for preheating, and at the same time make the gas in the rotary sulfur-burning furnace 1 move from the feed port 2 to the discharge port 3, and then turn on the screw feeder 6 to input the chlorine soaked material in the hopper 4 into the rotary sulfur-burning furnace 1 for heating treatment, thereby desulfurization and enrichment. Since the preheating is carried out by gas transmission, the processing efficiency and enrichment effect can be improved. The treated chlorine soaked material enters the kiln tail cover 7 through the discharge port 3, and is finally discharged through the discharge pipe 24 for subsequent processing. After heating, sulfur dioxide-containing flue gas is generated, which moves toward the discharge port 3 and enters the kiln tail cover 7 under the action of wind. In addition, the air is supplied from the feed port 2 to the rotary sulfur-burning furnace 1 through the air supply pipe 21, which can also prevent the flue gas from flowing out of the feed port 2. The flue gas does not pollute the surrounding environment and is transported to the quenching tower 9 through the first air pipeline 8. When passing through the first air pipeline 8, the flue gas heat exchange section 801 exchanges heat with the gas in the heat exchange box 19, so that the flue gas temperature is reduced and the temperature of the gas entering the air pipeline 21 is increased, the heat of the flue gas is effectively utilized, and the heat of the gas input into the rotary sulfur-burning furnace 1 is further increased, while preventing the waste of heat in the flue gas. The sulfur dioxide-containing flue gas after heat exchange is cooled and washed through the quenching tower 9, the turbulent tower 11 and the washing tower 13. After removing the impurities contained therein, it is input into the acid making system through the exhaust pipe 14 for corresponding utilization. At the same time, the washing waste liquid in the quenching tower 9, the turbulent tower 11 and the washing tower 13 is respectively transported to the filter press 16 through the first drain pipe 15, the second drain pipe 17 and the third drain pipe 18 for filter pressure filtration to collect the substances therein and achieve efficient resource recovery.
Claims
1. A chlorine soak material processing device, characterized in that: The invention comprises a rotary sulfur-burning furnace (1), wherein one end of the rotary sulfur-burning furnace (1) forms a feed inlet (2) and the other end forms a discharge outlet (3), the rotary sulfur-burning furnace (1) is provided with a hopper (4) near the feed inlet (2), the bottom of the hopper (4) is connected to a feed pipe (5), the feed pipe (5) is connected to a screw feeder (6) for feeding materials into the rotary sulfur-burning furnace (1), and the discharge outlet (3) of the rotary sulfur-burning furnace (1) is provided with a kiln A tail hood (7), wherein the kiln tail hood (7) is connected to a first gas pipeline (8), the first gas pipeline (8) is connected to a quenching tower (9), the quenching tower (9) is connected to a second gas pipeline (10), the second gas pipeline (10) is connected to a turbulence tower (11), the turbulence tower (11) is connected to a third gas pipeline (12), the third gas pipeline (12) is connected to a washing tower (14), and the washing tower (14) is connected to an exhaust pipe (15).
2. A chlorine soak material processing device according to claim 1, characterized in that: A discharge pipe (24) is connected to the bottom of the kiln tail cover (7), and a discharge valve (25) is provided on the discharge pipe (24).
3. A chlorine soak material processing device according to claim 1, characterized in that: A heat exchange box (19) is provided above the kiln tail cover (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) in 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 to the rotary sulfur-burning furnace (1), and an electric heating wire (22) is provided in the air supply pipe (21).
4. A chlorine soak material processing device according to claim 3, characterized in that: The outer wall of the heat exchange section (801) is provided with a plurality of heat exchange fins (26) along the length direction of the heat exchange section (801).
5. A chlorine soak material processing device according to claim 3, characterized in that: A fan is provided at one end of the air inlet pipe (20) away from the heat exchange box (19).
6. A chlorine soak material processing device according to claim 1, characterized in that: The quenching tower (9) is connected to a first liquid discharge pipe (15), the first liquid discharge pipe (15) is connected to a filter press (16), the filter press (16) is connected to a second liquid discharge pipe (17) and a third liquid discharge pipe (18), the second liquid discharge pipe (17) is connected to a turbulence tower (11), and the third liquid discharge pipe (18) is connected to a washing tower (14).
7. A chlorine soak material processing device according to claim 1, characterized in that: The first liquid discharge pipe (15) is provided with a first liquid discharge valve (27), the second liquid discharge pipe (17) is provided with a second liquid discharge valve (28), and the third liquid discharge pipe (18) is provided with a third liquid discharge valve (29).