Efficient dechlorination equipment for copper-containing hazardous waste

Abstract

The utility model discloses efficient dechlorination equipment for copper-containing hazardous wastes, which comprises raw material pretreatment equipment for drying raw materials; the batching tank is used for mixing the raw materials; the crushing and grinding machine is used for crushing and grinding raw materials and specifically comprises a cavity, and a grinding disc and a driving mechanism for driving the grinding disc are arranged at the bottom of the cavity; the rotary calcining kiln is used for calcining the raw materials; the washing tank is used for stirring and washing calcined raw materials, and specifically comprises a base as well as a first overturning container and a second overturning and stirring container which are arranged on the base; and the dehydrator is used for dehydrating the stirred and dehydrated raw materials. Compared with the prior art, the copper-containing hazardous waste dechlorinating device has the advantages that chloride ions in copper-containing hazardous waste can be deeply removed through cooperative operation of the batching tank, the smashing and grinding machine, the rotary calcining kiln, the washing tank and the dehydrator, the dechlorinating effect is remarkable, and the strict requirement of the copper smelting industry for the low chlorine content of raw materials is completely met.

Description

Technical Field

[0001] This utility model relates to the field of hazardous waste treatment technology, specifically to a high-efficiency dechlorination device for copper-containing hazardous waste. Background Technology

[0002] In the copper smelting industry, whether using pyrometallurgical or hydrometallurgical processes, the presence of chloride ions in raw materials remains a key challenge hindering industry development. The negative impacts of chloride ions are widespread and severe. On the one hand, their strong corrosiveness causes serious damage to smelting equipment. For example, in pyrometallurgical furnaces, chloride ions accelerate the wear and tear of the furnace lining refractory material, leading to frequent lining replacements, increasing production costs and severely impacting production continuity. According to statistics, equipment maintenance costs due to chloride ion corrosion can account for a significant proportion of a company's annual production costs. On the other hand, in hydrometallurgical processes, chloride ions interfere with the normal precipitation of copper ions, affecting the purity and quality of copper products. The presence of chloride impurities causes copper products to exceed impurity standards, lowering product grades and weakening their market competitiveness.

[0003] Currently, while various methods exist for dechlorinating copper-containing hazardous waste, they all have significant drawbacks. Some simple water washing processes can only remove a portion of the surface chloride ions, resulting in extremely limited dechlorination efficiency and failing to meet the stringent low-chlorine content requirements of modern copper smelting. While some complex chemical treatment methods offer relatively better dechlorination results, they require large quantities of expensive chemicals, significantly increasing treatment costs and potentially causing secondary pollution. Furthermore, some treatment processes involve complex equipment, are difficult to operate, demand highly skilled operators, and have low efficiency, making them unsuitable for large-scale production. With increasingly stringent environmental standards and ever-improving product quality requirements in the copper smelting industry, the development of a highly efficient, environmentally friendly, economical, and easy-to-operate dechlorination device for copper-containing hazardous waste is urgently needed. This invention, a highly efficient dechlorination device for copper-containing hazardous waste, is designed to address these issues and aims to provide a practical solution for the copper smelting industry. Utility Model Content

[0004] The present invention aims to solve the above-mentioned technical problems by providing a highly efficient dechlorination device for copper-containing hazardous waste.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a high-efficiency dechlorination device for copper-containing hazardous waste, comprising:

[0006] The raw material pretreatment equipment specifically includes a silo, an elevator, and a dryer. The elevator is inclined and connected to the silo at one end and the dryer at the other end.

[0007] A mixing tank is used to mix raw materials. Specifically, it includes a tank body and a stirring mechanism installed inside the tank body. The bottom of the dryer is equipped with a conveyor for connecting the mixing tank.

[0008] A crushing and grinding machine is used for crushing and grinding raw materials. Specifically, it includes: a cavity, a grinding disc and a driving mechanism for driving the grinding disc are provided at the bottom of the cavity, a powder inlet at the top of the cavity, multiple rotating discs inside, a screw feeder on the side, and a batching tank connected to the screw feeder.

[0009] A rotary calcining kiln is used for calcining raw materials. Specifically, it includes an inclined kiln and a power unit located at the bottom of the kiln. One side of the kiln is connected to the discharge port of a crusher and grinder.

[0010] A washing tank is used to stir and wash the calcined raw materials. Specifically, it includes a base and a first tilting container and a second tilting stirring container set on the base. The first tilting container is connected to a rotary calcining kiln.

[0011] A dehydrator is used to dehydrate raw materials after stirring and dehydration. Specifically, it includes a frame and a vacuum dehydrator installed on the frame. The vacuum dehydrator is connected to the outlet of the second tilting stirring container.

[0012] In addition, the high-efficiency dechlorination equipment for copper-containing hazardous waste proposed above according to this utility model may also have the following additional technical features:

[0013] The stirring mechanism includes a stirring rod and U-shaped stirring blades disposed on the stirring rod.

[0014] Furthermore, the turntable has two layers, both of which are mesh structures, with the mesh size of the upper turntable being larger than that of the lower turntable.

[0015] The powder inlet is located above the turntable; the side of the cavity is provided with an air inlet.

[0016] Furthermore, one end of the kiln is provided with a smoke chamber, and a feeding hopper is provided above the smoke chamber, the feeding hopper being connected to the kiln;

[0017] The other end of the kiln is provided with multiple cooling cylinders, which are arranged in a ring around the circumference of the kiln.

[0018] Furthermore, the base has a stepped structure, the height of the first tilting container is higher than the height of the second tilting stirring container, and the base is provided with a pneumatic rod for driving the first tilting container and the second tilting stirring container.

[0019] The second inverted stirring container is equipped with a stirring mechanism inside.

[0020] Furthermore, the vacuum dehydrator is equipped with a rotating dehydration disc, a water tank at the bottom of the frame, and a material box on one side.

[0021] The advantages of this utility model compared with the prior art are as follows:

[0022] 1. High-efficiency dechlorination: Through the coordinated operation of the batching tank, crusher and grinder, rotary kiln, washing tank and dewatering machine, it can deeply remove chloride ions from copper-containing hazardous waste, with significant dechlorination effect, fully meeting the stringent requirements of the copper smelting industry for low chloride content in raw materials.

[0023] 2. Environmentally friendly and energy-saving: Compared with some traditional chemical treatment methods, the dechlorination agent used in this equipment is more environmentally friendly, with precise dosage, effectively reducing secondary pollution. At the same time, the equipment structure and process parameters have been optimized, resulting in high energy efficiency, reduced energy consumption, and compliance with green environmental protection principles.

[0024] 3. Low cost: The equipment has a relatively simple structure, is easy to operate, and requires less professional skills from operators, thus reducing equipment construction and operating costs. Furthermore, efficient dechlorination treatment improves the utilization rate of copper-containing hazardous waste and reduces equipment wear and product quality degradation costs caused by chloride ion issues.

[0025] 4. High adaptability: This equipment can adapt to copper-containing hazardous waste of different sources and compositions. By flexibly adjusting the dosage of dechlorinating agent and process parameters, it can effectively dechlorinate raw materials with different chlorine contents, making it widely applicable. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the high-efficiency dechlorination equipment for copper-containing hazardous waste of this utility model.

[0027] Figure 2 This is a schematic diagram of the raw material pretreatment equipment structure for the high-efficiency dechlorination equipment for copper-containing hazardous waste of this utility model.

[0028] Figure 3 This is a schematic diagram of the pulverizer and grinder of the high-efficiency dechlorination equipment for copper-containing hazardous waste of this utility model.

[0029] Figure 4 This is a schematic diagram of the baffle of the high-efficiency dechlorination equipment for copper-containing hazardous waste of this utility model.

[0030] As shown in the figure: 1. Batching tank; 101. Tank body; 102. Stirring mechanism; 2. Crusher and grinder; 201. Cavity; 202. Grinding disc; 203. Drive mechanism; 204. Powder inlet; 205. Turntable; 206. Air inlet; 207. Screw feeder; 2071. Baffle; 3. Rotary calcining kiln; 301. Kiln; 302. Power unit; 303. Smoke chamber; 304. Feeding hopper; 305. Cooling cylinder; 4. 401. Washing tank; 402. Base; 403. First tilting container; 404. Second tilting mixing container; 405. Pneumatic rod; 5. Dehydrator; 501. Frame; 502. Vacuum dehydrator; 503. Dehydration disc; 504. Water tank; 505. Material box; 6. Raw material pretreatment equipment; 601. Silo; 602. Elevator; 603. Dryer; 604. Conveyor; 605. Dust collector; 606. Disperser. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0032] 8. Working principle of this utility model:

[0033] Overall structure and functions of each part

[0034] The raw material pretreatment equipment 6 specifically includes a hopper 601, an elevator 602, a dryer 603, and a conveyor 604, which are used to dry the raw materials. It also includes a dust collector, which is located at the end of the dryer (603); a dispersing machine is provided between the hopper and the elevator.

[0035] Ingredient tank

[0036] Structure: The batching tank 1 consists of a tank body 101 and a stirring mechanism 102 inside the tank body.

[0037] Principle: The stirring rod of the stirring mechanism 102 drives the U-shaped stirring fan blades to rotate. Inside the tank 101, the raw material and the dechlorination agent, including a compounding agent, a complexing agent, and an activator, are thoroughly mixed according to the chlorine content of the raw material and the dosage is determined by a known method. This mixing method ensures that the dechlorination agent is evenly distributed in the raw material, creating favorable conditions for the subsequent dechlorination reaction and ensuring that the dechlorination agent can fully contact and react with the chlorine-containing substances in subsequent treatment steps.

[0038] Crusher and grinder

[0039] Structure: The crusher and grinder 2 includes a cavity 201. A grinding disc 202 and a drive mechanism 203 for driving the grinding disc 202 are located at the bottom of the cavity 201. A powder inlet 204 is located at the top of the cavity 201, and two layers of mesh-like rotating discs 205 are arranged inside, with the upper disc having a larger mesh size than the lower disc. A screw feeder 207 is located on the side of the cavity 201, and a conical baffle 2071 is located above it. An air inlet 206 is also located on the side. The mixing tank 1 is connected to the screw feeder 207.

[0040] Principle: The raw materials mixed in the batching tank are conveyed to the powder inlet 204 by the screw feeder 207. Under the action of gravity, the raw materials first pass through the upper larger mesh turntable and then gradually move downwards to the lower turntable. The drive mechanism 203 drives the grinding disc 202 to rotate, crushing and grinding the falling raw materials. Air enters the cavity 201 through the air inlet 206, which promotes the flow of raw materials in the cavity and raises dust particles, allowing them to fully contact the grinding disc and improve the crushing and grinding effect. The conical baffle 2071 prevents the raw materials from splashing during the conveying process and ensures that the raw materials enter the powder inlet smoothly. Finally, a raw material with a mesh size of 60-100 mesh is obtained. This particle size is conducive to the full dechlorination reaction in the subsequent calcination process, because the appropriate particle size can increase the contact area between the raw materials, the dechlorinating agent, and the reaction environment.

[0041] Rotary calcining kiln

[0042] Structure: The rotary calcining kiln 3 includes an inclined kiln 301 and a power unit 302 located at the bottom of the kiln 301. The discharge port of the crusher and grinder 2 is connected to one side of the kiln 301. A smoke chamber 303 is provided at one end of the kiln 301, and a feeding hopper 304 is connected to the kiln 301 above the smoke chamber 303; multiple cooling cylinders 305 are arranged in a ring around the circumference of the kiln 301 at the other end.

[0043] Principle: The crushed and ground raw materials enter the inclined kiln 301 through the feeding hopper 304. The power unit 302 drives the kiln 301 to rotate slowly, causing the raw materials to tumble and move continuously inside the kiln. The kiln maintains a calcination temperature of 550-700℃. Under this high-temperature environment, the chlorine-containing compounds in the raw materials react chemically with the dechlorinating agent, and the chlorine element volatilizes in gaseous form and is discharged through the smoke chamber 303. The calcined raw materials exit from the other end of the kiln and enter the cooling cylinder 305 for rapid cooling. The cooling process can fix the structure of the dechlorinated products, avoid reverse reactions in subsequent processing, and ensure the stability of the dechlorination effect.

[0044] Water washing tank

[0045] Structure: The washing tank 4 consists of a base 401 and a first tilting container 402 and a second tilting stirring container 403 mounted on the base 401. The base 401 has a stepped structure, with the first tilting container 402 being higher than the second tilting stirring container 403. A pneumatic rod 404 for driving the first tilting container 402 and the second tilting stirring container 403 is provided on the base 401. A stirring mechanism is installed inside the second tilting stirring container 403. The first tilting container 402 is connected to a rotary calcining kiln 3.

[0046] Principle: After calcination and cooling, the raw material enters the first tilting container 402. A pneumatic rod 404 drives the first tilting container 402 to tilt, pouring the raw material into the second tilting and stirring container 403 below. The stirring mechanism inside the second tilting and stirring container 403 is activated, and water is added simultaneously to dissolve residual soluble chlorides in the raw material. Through stirring, the washing efficiency and effect are greatly improved, allowing more chlorides to be washed out and further reducing the chlorine content in the raw material.

[0047] Dehydrator

[0048] Structure: The dewatering machine 5 consists of a frame 501 and a vacuum dewatering machine 502 mounted on the frame 501. The vacuum dewatering machine 502 is connected to the outlet of the second tilting mixing container 403. The vacuum dewatering machine 502 contains a dewatering disc 503, and the frame 501 has a water tank 504 at the bottom and a material box 505 on one side.

[0049] Principle: After washing, the raw material enters the vacuum dewatering machine 502. The conical spiral shaft 503 rotates, pushing the raw material towards the outlet of the vacuum dewatering machine. During the pushing process, due to the compression of the spiral shaft and the structural design of the vacuum dewatering machine, the water in the raw material is squeezed out and flows into the bottom water tank 504 through the filter screen of the vacuum dewatering machine. The dewatered raw material is then transported to the material box 505. At this point, the moisture content of the raw material is ≤10%, which meets the requirements of subsequent copper smelting and other processes for the moisture content of the raw material, providing qualified raw materials for subsequent processes.

[0050] 9. Implementation method:

[0051] 2.1 Structure

[0052] The raw material pretreatment equipment 6 specifically includes a silo 601, an elevator 602, a dryer 603, and a conveyor 604, which are used to dry the raw materials. The raw material pretreatment equipment 6 also includes a dust collector, which is installed at the end of the dryer 603. A dispersing machine is provided between the silo and the elevator.

[0053] Ingredient tank

[0054] Tank 101 is made of corrosion-resistant stainless steel, such as 316L stainless steel, to resist corrosion from raw materials and dechlorination agents. The tank volume is determined according to the actual production scale; a small treatment plant can be equipped with 3 cubic meters, a medium-sized treatment plant with 10 cubic meters, and a large treatment plant with 30 cubic meters.

[0055] The stirring rod of the stirring mechanism 102 is made of high-strength alloy steel, such as 42CrMo alloy steel, to ensure that it will not deform during long-term stirring. The outer layer of the U-shaped stirring fan blades is covered with wear-resistant rubber to enhance the stirring effect and prevent scratching the tank. The stirring rod is connected to the drive motor via a coupling. The power of the drive motor is adjusted according to the tank volume and stirring requirements: 5-10 kW for small tanks, 10-20 kW for medium tanks, and 20-30 kW for large tanks.

[0056] Crusher and grinder

[0057] The 201 chamber is made of stainless steel with a polished inner wall to reduce material adhesion and clogging. The chamber dimensions are designed according to the processing capacity: small equipment has a chamber diameter of 1.5 meters and a height of 2.5 meters; medium equipment has a diameter of 2.5 meters and a height of 4 meters; and large equipment has a diameter of 4 meters and a height of 6 meters.

[0058] The grinding disc 202 is made of a high-hardness, wear-resistant alloy, such as tungsten carbide alloy, to improve its service life. The drive mechanism 203 uses a variable frequency motor, which can adjust the grinding disc speed according to the characteristics of the raw materials and processing requirements. The speed range is generally 300-1800 rpm.

[0059] The two-layer turntable 205 is made of stainless steel mesh, with the upper turntable having a mesh size of 12 mm × 12 mm and the lower turntable having a mesh size of 6 mm × 6 mm. The conveying capacity of the screw feeder 207 is matched according to the discharge speed of the batching tank and the feeding requirements of the crusher and grinder: 3-5 tons / hour for small equipment, 5-10 tons / hour for medium equipment, and 10-20 tons / hour for large equipment. The size and number of air inlets 206 are determined according to the airflow requirements inside the cavity to ensure uniform air distribution. The conical baffle 2071 is made of stainless steel, and its installation angle and size ensure effective prevention of raw material splashing.

[0060] Rotary calcining kiln

[0061] Kiln 301 uses high-temperature resistant ceramic fiber material for insulation and is wrapped with a carbon steel shell to ensure structural stability and heat retention at high temperatures. The kiln's tilt angle is generally set at 3-5 degrees, and the length is determined according to the processing capacity and calcination time requirements: 10 meters for small kilns, 15 meters for medium-sized kilns, and 25 meters for large kilns.

[0062] The power unit 302 uses a combination of multiple motors and reducers to drive the kiln to rotate slowly, typically at a speed of 0.3-2 rpm. The smoke chamber 303 is designed to effectively collect and exhaust calcination exhaust gases. The capacity of the feed hopper 304 is determined based on the feeding rate and the kiln's feeding requirements: 0.5-1 cubic meters for small hoppers, 1-2 cubic meters for medium hoppers, and 2-3 cubic meters for large hoppers. The cooling cylinder 305 is made of copper tubing and contains cooling water, rapidly cooling the calcined raw materials through heat exchange. The number and size of the cooling cylinders are determined according to the kiln specifications to ensure uniform cooling.

[0063] Water washing tank

[0064] The base 401 is made of high-strength concrete with a smooth surface to ensure stable installation of the first tilting container 402 and the second tilting mixing container 403. Both the first tilting container 402 and the second tilting mixing container 403 are made of stainless steel. The first tilting container has a capacity of 2 cubic meters for small equipment, 5 cubic meters for medium equipment, and 10 cubic meters for large equipment; the second tilting mixing container has a capacity of 3 cubic meters for small equipment, 8 cubic meters for medium equipment, and 15 cubic meters for large equipment.

[0065] The pneumatic rod 404 is a hydraulic rod with sufficient load-bearing capacity. The stroke and pressure are determined according to the weight of the tilting container and the tilting angle requirements. The stirring mechanism inside the second tilting mixing container 403 is similar to the stirring mechanism of the batching tank. The power of the drive motor is adjusted according to the container size and stirring requirements: 10-15 kW for small equipment, 15-25 kW for medium equipment, and 25-35 kW for large equipment.

[0066] Dehydrator

[0067] The frame 501 is welded from channel steel and angle steel, forming a stable frame structure to support components such as the vacuum dewatering machine 502. The volume of the water tank 504 is determined according to the amount of water produced during the dewatering process: 1-3 cubic meters for small equipment, 3-5 cubic meters for medium equipment, and 5-10 cubic meters for large equipment. The dimensions of the material bin 505 are designed according to the storage requirements of the dewatered material: 2 cubic meters for small equipment, 5 cubic meters for medium equipment, and 10 cubic meters for large equipment.

[0068] 2.2 Process Flow

[0069] Raw material pretreatment: The collected copper-containing hazardous waste is screened to remove large particles of impurities, and then crushed to a particle size of about 5-10 cm by a jaw crusher, so that it can be dried in the subsequent raw material pretreatment equipment.

[0070] Ingredient Mixing: The pretreated raw materials are transported to the mixing tank and added according to the calculated dosage of dechlorinating agent using a metering device. The stirring mechanism is started and stirred for 15-30 minutes to ensure thorough mixing of the raw materials and dechlorinating agent. The uniformity of mixing can be checked through an observation window or by taking a sample.

[0071] Crushing and Grinding: Turn on the crusher's drive mechanism and screw feeder to slowly convey the mixed raw materials from the batching tank to the powder inlet. Adjust the drive motor speed according to the raw material characteristics, observe the particle size of the raw material, and optimize the crushing and grinding effect by adjusting the air inlet airflow. Continue crushing and grinding for 30-60 minutes until the raw material reaches the required particle size of 60-100 mesh. The particle size can be detected using a particle size analyzer.

[0072] Rotary calcination: Start the rotary calcining kiln power unit and heating device to gradually raise the kiln temperature to 550-700℃. Once the set temperature is reached, evenly feed the crushed and ground raw materials into the kiln through the feeding hopper. Observe the calcination of the raw materials inside the kiln, and adjust the kiln rotation speed and feeding speed to ensure sufficient calcination. The calcination time is 1-2 hours. Closely monitor the exhaust gas in the flue and ensure that the exhaust gas treatment equipment is operating normally. The composition of the exhaust gas can be detected through exhaust gas monitoring equipment.

[0073] Stirring and washing: After calcination, the raw material is cooled in a cooling cylinder and enters the first tilting container of the washing tank. Once a certain amount of raw material has been reached in the first tilting container, the pneumatic rod is activated to pour the raw material into the second tilting and stirring container. An appropriate amount of water is added to the second tilting and stirring container, and the stirring mechanism is activated. Stirring for 20-40 minutes ensures that residual chlorides are fully dissolved. The washing effect can be judged by detecting the chloride ion concentration in the water.

[0074] Dehydration: After washing, the raw materials flow into the vacuum dehydrator. Observe the water level in the water tank and the condition of the dehydrated raw materials in the material tank. When the moisture content of the raw materials reaches ≤10%, the copper-containing material after dechlorination in the material tank is transported to the subsequent storage or processing stage. The moisture content can be detected by a moisture meter.

[0075] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-efficiency dechlorination device for copper-containing hazardous waste, characterized in that: include: The raw material pretreatment equipment (6) specifically includes a silo (601), an elevator (602), and a dryer (603). The elevator is inclined and connected to the silo at one end and the dryer at the other end. The mixing tank (1) is used to mix raw materials. Specifically, it includes a tank body (101) and a stirring mechanism (102) installed inside the tank body. The dryer (603) is equipped with a conveyor (604) at the bottom for connecting the mixing tank (1). The crushing and grinding machine (2) is used to crush and grind raw materials. Specifically, it includes: a cavity (201), a grinding disc (202) at the bottom of the cavity (201) and a driving mechanism (203) for driving the grinding disc (202), a powder inlet (204) at the top of the cavity (201), a multi-layer turntable (205) inside, a spiral feeder (207) on the side, and a batching tank (1) connected to the crushing and grinding machine (2). A rotary calcining kiln (3) is used for calcining raw materials. Specifically, it includes an inclined kiln (301) and a power unit (302) located at the bottom of the kiln (301). The kiln (301) is connected to the discharge port of a crusher and grinder (2) on one side. The washing tank (4) is used to stir and wash the calcined raw materials. Specifically, it includes a base (401) and a first tilting container (402) and a second tilting stirring container (403) set on the base (401). The first tilting container (402) is connected to the rotary calcining kiln (3). The dehydrator (5) is used to dehydrate the raw materials after stirring and dehydration. Specifically, it includes a frame (501) and a vacuum dehydrator (502) installed on the frame (501). The vacuum dehydrator (502) is connected to the outlet of the second tilting stirring container (403).

2. The high-efficiency dechlorination equipment for copper-containing hazardous waste according to claim 1, characterized in that: The stirring mechanism (102) includes a stirring rod and U-shaped stirring blades disposed on the stirring rod.

3. The high-efficiency dechlorination equipment for copper-containing hazardous waste according to claim 1, characterized in that: The turntable (205) has two layers, both of which are mesh structures. The mesh size of the upper turntable (205) is larger than that of the lower turntable (205). The powder inlet (204) is positioned above the turntable (205); the side of the cavity (201) is provided with an air inlet (206). The spiral feeder (207) is provided with a conical baffle (2071) above it.

4. The high-efficiency dechlorination equipment for copper-containing hazardous waste according to claim 1, characterized in that: The kiln (301) is provided with a smoke chamber (303) at one end, and a feeding hopper (304) is provided above the smoke chamber (303), and the feeding hopper (304) is connected to the kiln (301). The other end of the kiln (301) is provided with a plurality of cooling cylinders (305), which are arranged in a ring around the circumference of the kiln (301).

5. The high-efficiency dechlorination equipment for copper-containing hazardous waste according to claim 1, characterized in that: The base (401) has a stepped structure, the height of the first tilting container (402) is higher than the height of the second tilting stirring container (403), and the base (401) is provided with a pneumatic rod (404) for driving the first tilting container (402) and the second tilting stirring container (403). The second inverted stirring container (403) is equipped with a stirring mechanism inside.

6. The high-efficiency dechlorination equipment for copper-containing hazardous waste according to claim 1, characterized in that: The vacuum dehydrator (502) has a dehydration disc (503) rotating inside, a water tank (504) at the bottom of the frame (501), and a material box (505) on one side.

7. The high-efficiency dechlorination equipment for copper-containing hazardous waste according to claim 1, characterized in that: The raw material after the crushing and grinding machine (2) has a mesh size of 60-100 mesh; the calcination temperature of the rotary kiln (3) is 550-700℃; and the moisture content of the raw material after the dehydrator (5) is ≤10%.

8. The high-efficiency dechlorination equipment for copper-containing hazardous waste according to claim 1, characterized in that: The raw material pretreatment equipment (6) also includes a dust collector (605), which is located at the end of the dryer (603); A dispersing machine (606) is provided between the silo (601) and the elevator (602).

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