A resource processing system for barium sulfide slag

Abstract

The utility model discloses a resource processing system for barium sulfide slag. The barium sulfide slag is crushed and leached by circulating water washing through a pretreatment unit to leach barium sulfide in the barium sulfide slag, and the water washing liquid enriched with barium sulfide is subjected to an electrophoresis deep processing unit to realize high-value recovery of sulfur and barium elements, thereby finally realizing resource utilization of the barium slag. The system of the utility model has no secondary pollution, has the advantages of being environmentally friendly, having high product added value, high sulfur element utilization efficiency, low cost, and simple operation, is applicable to large-scale industrial applications, and has broad market prospects and significant economic benefits.

Description

Technical Field

[0001] The utility model relates to the treatment of barium slag solid waste, in particular to a resource treatment system for barium sulfide slag, and belongs to the technical field of barium sulfide slag solid waste treatment. Background Art

[0002] Barium slag is a solid residue produced in the process of producing barium carbonate and thiourea by the carbonization reduction method in the chemical industry. The pH of the barium slag sample is close to or exceeds the standard limit (12.5), and it is alkaline and corrosive. It is well known that Ba is a heavy metal element that is harmful to human life and health. Inhalation through the respiratory tract or ingestion through the digestive tract can cause acute barium poisoning. In addition, the sulfur element in the barium slag has a stronger destructive effect on the human body and the environment. The barium slag is washed by rainwater, and the toxic wastewater containing sulfides that flows out directly poisons surface water and groundwater. As it flows into rivers and reservoirs, it seeps into groundwater, threatening the drinking water health of residents. In addition, the alkaline components in the barium slag can also cause soil salinization. Therefore, barium slag is a hazardous waste explicitly listed in the "National List of Hazardous Wastes".

[0003] Barium slag contains barium (Ba), magnesium (Mg), silicon (Si), oxygen (O), sulfur (S) and other elements. The main forms of barium in barium slag are barium carbonate, barium sulfate in unreacted barite and unleached barium sulfide. In order to realize the recycling of barium in barium slag, acid leaching is often used in the prior art, that is, by adding hydrochloric acid, nitric acid and sulfuric acid to the barium slag to obtain corresponding barium chloride, barium nitrate, barium sulfate and other products. However, acid leaching not only consumes a large amount of strong acid, but also a large amount of strong acid will cause a large amount of acid mist to appear in the on-site environment, seriously threatening the safety of workers and polluting the surrounding environment. In addition, in the process of extracting barium from barium slag by acid leaching, since barium slag also contains barium sulfide, barium sulfide reacts with acid to produce a large amount of hydrogen sulfide gas, which further deteriorates the on-site environment and the surrounding environment, further exacerbates the threat to the physical and mental health of workers, and also causes a waste of sulfur resources, so that the sulfur ions in the barium slag cannot be well utilized and treated. How to realize the resource utilization of barium slag, which can be both green and environmentally friendly and produce certain economic value, is a problem that needs to be solved urgently. Utility Model Content

[0004] In view of the problems that the existing barium sulfide slag treatment technology requires strong acid treatment of barium slag, resulting in large acid consumption, high cost, high risk of on-site working environment, great impact on the environment, and insufficient recovery and utilization of sulfur ions, resulting in low value of the obtained products, the utility model provides a resource treatment system for barium sulfide slag, which crushes the barium sulfide slag and performs circulating water washing and leaching through a pretreatment unit to leach barium sulfide in the barium sulfide slag, and uses the water washing liquid enriched with barium sulfide to convert the barium element into a high-value nano-scale barium sulfate product through an electrophoresis deep treatment unit, and at the same time converts the sulfur element into a sodium sulfide product, thereby realizing high-value resource utilization of the barium slag, and has the advantages of being environmentally friendly, high product added value and high sulfur element utilization efficiency.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is specifically described as follows:

[0006] According to a first embodiment of the utility model, a processing system for recycling barium sulfide slag is provided.

[0007] A resource processing system for barium sulfide slag, the system comprising: a pretreatment unit and an electrophoresis deep processing unit. The pretreatment unit comprises a crushing mechanism and a washing mechanism arranged in series. The electrophoresis deep processing unit comprises an electrolysis mechanism and a nanofiber membrane. The electrolysis mechanism comprises an anode, a cathode and an electrolytic cell. The anode and the cathode are arranged in the electrolytic cell or inserted into the electrolytic cell. The nanofiber membrane is arranged inside the electrolytic cell and is located between the anode and the cathode. The electrolytic cell is provided with an anode feed port and a cathode feed port, wherein the anode feed port is arranged between the anode and the nanofiber membrane, and the cathode feed port is arranged between the nanofiber membrane and the cathode. The discharge port of the washing mechanism is connected to the anode feed port through a pipeline.

[0008] Preferably, in the electrolytic cell, a cation diaphragm is provided between the anode and the anode feed port, and an anion diaphragm is provided between the cathode and the cathode feed port.

[0009] Preferably, the cathode feed port is connected to the sulfate solution storage tank via a liquid infusion pipeline, and a flow control valve is also provided on the liquid infusion pipeline.

[0010] Preferably, multiple layers of the nanofiber membrane are arranged between the anode and the cathode. The gaps between the multiple layers of the nanofiber membrane are the same or different. The pore size of the nanofiber membrane is not greater than 500nm, preferably not greater than 300nm, and more preferably not greater than 200nm.

[0011] Preferably, the system further comprises an ultrasonic mechanism. The ultrasonic mechanism is arranged in the electrolytic cell and located in the middle of the multilayer nanofiber membrane. It should be noted that the ultrasonic mechanism can be an ultrasonic rod or an ultrasonic generating block or an ultrasonic generating plate or other ultrasonic devices.

[0012] Preferably, the anode and cathode are both carbonaceous electrodes or other inert electrodes.

[0013] Preferably, the system further comprises a post-processing unit, which comprises an outer barrel, an inner barrel and a stirring mechanism. The outer barrel is a closed cylindrical structure, the inner barrel is coaxially sleeved inside the outer barrel, and sieve holes are provided on the side wall and the bottom wall of the inner barrel. The stirring mechanism is provided inside the inner barrel. A main feed inlet and a main liquid inlet are also provided on the top wall of the inner barrel. The main feed inlet is connected to the discharge port of the electrolytic cell through a feed delivery pipeline. The main liquid inlet is connected to the liquid storage tank through a liquid inlet pipeline.

[0014] Preferably, the stirring mechanism comprises a stirring motor, a stirring shaft and a stirring paddle. The stirring motor is mounted on the top wall of the outer barrel. The upper end of the stirring shaft is connected to the stirring motor, and the lower end of the stirring shaft sequentially penetrates the top wall of the outer barrel and the top wall of the inner barrel downwards and then extends to the inside of the inner barrel or further penetrates the bottom wall of the inner barrel downwards and then extends to the lower side of the bottom wall of the inner barrel, and the stirring shaft is movably connected to the top wall of the outer barrel and the top wall or bottom wall of the inner barrel through bearings. The stirring paddle is mounted on the stirring shaft located below the top wall of the inner barrel.

[0015] Preferably, the stirring paddle is an arc-shaped stirring blade, and a serrated protrusion is provided on the side of the blade in the rotation direction thereof.

[0016] Preferably, the bottom end of the outer barrel is designed as a tapered discharge port that tapers downwards. In the circumferential direction, ultrasonic blocks are evenly laid on the bottom surface of the tapered discharge port.

[0017] Preferably, the pore size of the sieve is no greater than 200 nm, preferably no greater than 180 nm, and more preferably no greater than 150 nm.

[0018] According to a second embodiment of the utility model, a method for resource recovery of barium sulfide slag is provided.

[0019] A method for resource recovery using the processing system of the first embodiment, the method comprising the following steps:

[0020] 1) The barium sulfide slag is crushed by a crushing mechanism, and then washed and leached by a washing mechanism to obtain a leachate. The washed slag is disposed of separately, such as being used to produce barium salt products, or directly used as a construction raw material.

[0021] 2) The leachate is delivered to the electrolytic cell through the anode feed port, and the sulfate solution is delivered to the electrolytic cell through the cathode feed port. The ultrasonic mechanism and power supply are started to perform electrolysis.

[0022] 3) After the electrolysis is completed, the solid materials deposited in the electrolytic cell are transported to the inner barrel of the post-processing unit through the feed pipe, and water and acid are added to the inner barrel in sequence through the liquid inlet pipe (it should be noted that the addition of water and acid is carried out separately and in sequence. The purpose of adding water is to wash away the sodium sulfide and excess impurity ions entrained by the nano-barium sulfate, and the purpose of acid washing is to convert a small amount of other insoluble impurities generated during the reaction into barium sulfate, such as a small amount of barium thiosulfate, barium sulfite, barium sulfide, and residual barium carbonate, etc.), and the stirring mechanism and ultrasonic block are started to stir the materials in the post-processing unit (the stirring time can be set according to the amount of material added, or stirred several times, for example, after stirring for a period of time, it is left to stand and observed, and then stirred again. Whether it is stirred once or several times, the ultimate goal is to allow all materials to settle through the sieve holes of the inner barrel and be transported to the outside with the liquid phase for solid-liquid separation). After the stirring is completed, solid-liquid separation is carried out, and nano-barium sulfate can be obtained after the solid phase is dried. The residual liquid in the electrolytic cell is concentrated and crystallized to obtain sodium sulfide.

[0023] Preferably, in step 1), the mass concentration of barium sulfide in the barium sulfide slag is not less than 5%.

[0024] Preferably, in step 1), the water washing and leaching is multi-stage countercurrent circulation water washing and leaching. The concentration of barium sulfide in the leaching solution is 0.5-1.5 mol / L.

[0025] Preferably, in step 2), the sulfate is sodium sulfate and / or sodium bisulfate. The concentration of the sulfate solution is 0.5-1.5 mol / L.

[0026] Preferably, in step 2), the power supply is a DC power supply with a voltage of 120-240V.

[0027] Preferably, in step 3), the acid is dilute sulfuric acid (dilute hydrochloric acid or dilute nitric acid may also be used, preferably dilute sulfuric acid) with a pH of 3-4. The amount of acid added is 2-10 times the mass of the solid material.

[0028] In the utility model, in view of the problems of serious environmental pollution, great safety hazards and under-utilization of sulfur resources in the treatment process of barium sulfide slag in the prior art, the treatment system of the utility model first refines the barium sulfide slag through the crushing mechanism of the pretreatment unit to facilitate subsequent water washing and leaching of sulfide, and then adopts three-stage countercurrent water washing for cyclic enrichment water washing (the water for the first-stage water washing is the second-stage water washing filtrate or the first-stage water washing filtrate is circulated, the water for the second-stage water washing is the third-stage water washing filtrate, and the water for the third-stage water washing is industrial water). Through the cyclic water washing, as much sulfur element as possible can be leached out of the barium sulfide slag under the premise of saving water resources, and the sulfur element in the water washing leachate is enriched to a certain concentration, so as to facilitate the subsequent electrophoresis deep treatment to produce high-value nano barium sulfate and high-purity sodium sulfide products.

[0029] In the utility model, an electrophoresis deep treatment unit is used to deeply treat the water-washed leachate of the barium sulfide slag, and the electrophoresis deep treatment unit includes an anode, a cathode, an electrolytic cell and a nanofiber membrane. The nanofiber membrane is arranged inside the electrolytic cell and is located between the anode and the cathode. The leachate rich in barium sulfide is added to the anode side of the electrolytic cell, and a sodium sulfide solution is added to the cathode side of the electrolytic cell. The electrochemical method is applied to the recovery of sulfur elements in the barium slag and the high-value conversion of the barium element by using the electrolysis principle. By controlling the external current and voltage, the barium ions in the barium sulfide solution are prompted to move rapidly to the cathode under the action of the electric field, and the sulfate ions in the sodium sulfate solution move rapidly to the anode, thereby intensifying the reaction of the barium ions and the sulfate ions in the electrolytic cell, and quickly generating ultrafine barium sulfate precipitation. Compared with the traditional device that requires a pump to provide power in order to increase the collision rate of the material, the utility model has ion selectivity, can be stably controlled, and is easy to operate.

[0030] Furthermore, the utility model sets a nanofiber membrane in the middle of the electrophoresis deep treatment unit. When the electrolysis is powered on, the nanofiber membrane provides a nanochannel. When barium ions and sulfate ions pass through, a microreactor is formed. The barium ions and sulfate ion beams are ejected from the nanofiber membrane, like a shower head with countless nozzles facing each other, increasing the contact area and collision rate of anions and cations, and forming nano-scale barium sulfate in an instant, which is precipitated between the two layers of nanofiber membranes to obtain a high-value nano-barium sulfate product with a small particle size, uniform dispersion, and narrow particle size distribution. The sulfur element is retained in the liquid phase, and can be recycled to obtain a high-purity sodium sulfide product through subsequent treatment, thereby realizing the separation and resource utilization of the barium element and the sulfur element in the barium sulfide.

[0031] In the utility model, generally at least two layers of nanofiber membrane layers are arranged in the middle of the electrolytic cell of the electrophoresis deep processing unit. The arrangement of the multi-layer nanofiber membrane layer can weaken the agglomeration phenomenon of nano barium sulfate after precipitation on the one hand, and can make the generated nano barium sulfate deposit between the nanofiber membrane layers on the other hand, so as to avoid sulfate ions entering the anode through the two layers of nanofiber membranes to generate barium sulfate near the anode and barium ions entering the cathode through the two layers of nanofiber membranes to generate barium sulfate at the cathode, which makes subsequent precipitation and separation difficult. It should be noted that the utility model is also provided with a cationic diaphragm between the anode and the nanofiber membrane, and an anionic diaphragm between the cathode and the nanofiber membrane. By introducing the cationic diaphragm around the anode, on the one hand, it is avoided that the sulfur ions move to the anode under the action of the electric field, so that the oxidation reaction occurs at the anode to produce sulfur precipitation, and on the other hand, it helps to separate the oxygen generated at the anode from the oxidation reaction with sodium sulfide, resulting in impure sodium sulfide. The introduction of an anionic diaphragm around the cathode can effectively prevent barium ions from entering the cathode to react with a large amount of hydroxide to produce barium hydroxide, and precipitate barium hydroxide crystals after the concentration is too high.

[0032] In the utility model, an ultrasonic mechanism is further provided between the multiple nanofiber membrane layers, and ultrasound is continuously performed during the electrolysis process. On the one hand, it can prevent the generated nano-barium sulfate from adhering to the nanofiber membrane and causing clogging of the nanopores. On the other hand, it can also make the sulfate ions and barium ions react more evenly, promote the generation and dispersion of nano-scale barium sulfate, and weaken the agglomeration of nano-barium sulfate, which is conducive to obtaining high-value nano-barium sulfate products with a narrow particle size distribution.

[0033] In the utility model, the nano-barium sulfate obtained by electrolytic deposition will also carry a certain amount of impurities (such as sodium sulfide and insoluble barium salts, etc.), and the inevitable agglomeration of nano-barium sulfate to varying degrees, which greatly reduces the product value of the barium sulfate. Therefore, in order to simultaneously ensure the purity of the nano-barium sulfate and completely prevent the agglomeration phenomenon, the utility model abandons the traditional method of adding a dispersant during the reaction process (adding a dispersant will introduce new impurities and reduce the purity of the product), and after the nano-barium sulfate is obtained by the electrolytic device, a special post-processing unit for the nano-barium sulfate is added. The post-processing unit includes an outer barrel, an inner barrel, a stirring mechanism and an ultrasonic mechanism. The outer barrel is a closed cylindrical structure, and the inner barrel is a (a fully enclosed cylindrical structure with sieve holes) is coaxially sleeved inside the outer barrel, and sieve holes are opened on the side wall and bottom wall of the inner barrel. The nano-barium sulfate deposited in the electrolytic cell is directly transported to the inner barrel of the post-processing unit through the feed pipeline, and then water is passed in turn for washing to remove the sodium sulfide and the like carried along, and then a small amount of other insoluble impurities are removed by acid washing, and the nano-barium sulfate that has been agglomerated is further refined and screened under the dual effects of stirring and ultrasound to break up the agglomerated nano-barium sulfate. The post-processing unit integrates multiple functions such as washing, water washing, acidification, purification, refinement, and screening, which can further improve the purity, fineness, whiteness, viscosity and other indicators of nano-level barium sulfate, and effectively ensure the product value of nano-barium sulfate.

[0034] In the utility model, the nano-barium sulfate produced by electrolytic precipitation has high viscosity, high sulfide impurity content, and yellowish color. Due to the agglomeration effect, the barium sulfate molecules with nano-sized particle sizes will combine with each other to form barium sulfate with larger particle sizes. Therefore, it is extremely critical to improve the dispersion effect in subsequent treatment. The utility model further refines the nano-barium sulfate by setting a cone barrel stirring mechanism. The multiple serrated stirring paddles and the ultrasonic blocks in the barrel can quickly disperse the nano-barium sulfate, and the refined nano-barium sulfate is thrown out through the sieve holes in the inner barrel. After acidification and washing, it sinks to the bottom of the cone, while the nano-barium sulfate that has not been dispersed in the inner barrel continues to disperse until it is smaller than the sieve hole diameter and then thrown out. In this way, the particle size of the generated nano-barium sulfate can be guaranteed to be stable and controllable.

[0035] In the utility model, the role of the electrolysis process in the utility model is to convert the waste barium material leaching solution into nano-scale barium sulfate precipitation and sodium sulfide solution under the action of sulfate, and the role of the post-treatment process is to solve the problems of purity, fineness, whiteness, viscosity, etc. of nano-scale barium sulfate, especially purity. Only when the nano-scale barium sulfate is dispersed, the smaller the particle size, the less impurities it contains, the purer the obtained nano-scale barium sulfate, and the higher the added value of its product. The electrolysis process and the post-treatment process are two indispensable links in the preparation of nano-scale barium sulfate, and neither of them can be missing. Only when the barium sulfate obtained by the electrolysis process is nano-scale can it be redispersed, washed and converted into a nano-scale barium sulfate product through sieve holes through ultrasound and stirring. At the same time, only through the subsequent post-treatment process can the nano-scale barium sulfate obtained by the electrolysis process be prevented from agglomerating and the purity and whiteness of the nano-scale barium sulfate be improved.

[0036] In the present invention, the thickness of the anode is 0.1-100 cm, preferably 0.5-80 cm, and more preferably 0.8-50 cm. The thickness of the cathode is 0.1-100 cm, preferably 0.5-80 cm, and more preferably 0.8-50 cm. The length of the electrolytic cell is 0.1-100 m, preferably 0.2-80 m, and more preferably 0.3-60 m. The width of the electrolytic cell is 0.1-50 m, preferably 0.2-40 m, and more preferably 0.3-30 m. The height of the electrolytic cell is 0.1-10 m, and more preferably 0.2-8 m, and more preferably 0.3-6 m.

[0037] Compared with the prior art, the beneficial technical effects of the utility model are as follows:

[0038] 1: The utility model innovatively provides a resource processing system for barium sulfide slag. The system separates the barium sulfide in the barium sulfide slag through the synergistic effect of a pretreatment unit, an electrophoresis deep treatment unit and a post-treatment unit, solidifies the sulfur element into a high-purity sodium sulfide product, and converts the barium element into a high-purity, high-value nano-barium sulfate product with a narrow particle size distribution, thereby realizing the harmless resource utilization of the barium slag.

[0039] 2. The resource recovery processing system described in the utility model has a simple structure, low cost, no secondary pollution, simple operation, and high added value of the generated resource recovery products. It can be applied to large-scale industrial applications and has broad market prospects and significant economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The figure is a simplified diagram of the overall structure of the system of the utility model.

[0041] Figure 2 It is a schematic diagram of the internal structure of the electrolytic cell described in the utility model.

[0042] Figure 3 It is a structural schematic diagram of the post-processing unit of the utility model.

[0043] Figure 4 It is a structural schematic diagram of the inner barrel of the utility model.

[0044] Figure 5 It is a top view of the stirring paddle of the utility model.

[0045] Figure numerals: 1: crushing mechanism; 2: washing mechanism; 3: electrolysis mechanism; 301: anode; 302: cathode; 303: electrolytic cell; 304: anode feed port; 305: cathode feed port; 306: cation diaphragm; 307: anion diaphragm; 308: feed pipeline; 4: nanofiber membrane; 5: sulfate solution storage tank; 501: liquid delivery pipeline; 502: flow control valve; 6: ultrasonic mechanism; 7: outer barrel; 8: inner barrel; 801: sieve hole; 802: main feed port; 803: main liquid inlet; 804: liquid inlet pipeline; 9: stirring mechanism; 901: stirring motor; 902: stirring shaft; 903: stirring paddle; 904: serrated protrusion; 10: liquid storage tank; 11: ultrasonic block. DETAILED DESCRIPTION

[0046] The technical solution of the utility model is illustrated below, and the scope of protection requested for the utility model includes but is not limited to the following embodiments.

[0047] A resource processing system for barium sulfide slag, the system comprises: a pretreatment unit and an electrophoresis deep processing unit. The pretreatment unit comprises a crushing mechanism 1 and a washing mechanism 2 which are arranged in series. The electrophoresis deep processing unit comprises an electrolysis mechanism 3 and a nanofiber membrane 4. The electrolysis mechanism 3 comprises an anode 301, a cathode 302 and an electrolytic cell 303. The anode 301 and the cathode 302 are arranged in the electrolytic cell 303 or inserted in the electrolytic cell 303. The nanofiber membrane 4 is arranged inside the electrolytic cell 303 and is located between the anode 301 and the cathode 302. The electrolytic cell 303 is provided with an anode feed port 304 and a cathode feed port 305, wherein the anode feed port 304 is arranged between the anode 301 and the nanofiber membrane 4, and the cathode feed port 305 is arranged between the nanofiber membrane 4 and the cathode 302. The discharge port of the washing mechanism 2 is connected to the anode feed port 304 through a pipeline.

[0048] Preferably, in the electrolytic cell 303 , a cation diaphragm 306 is further provided between the anode 301 and the anode feed port 304 , and an anion diaphragm 307 is further provided between the cathode 302 and the cathode feed port 305 .

[0049] Preferably, the cathode feed port 305 is connected to the sulfate solution storage tank 5 through a liquid infusion pipeline 501. A flow control valve 502 is also provided on the liquid infusion pipeline 501.

[0050] Preferably, multiple layers of the nanofiber membrane 4 are provided between the anode 301 and the cathode 302. The gaps between the multiple layers of the nanofiber membrane 4 are the same or different. The pore size of the nanofiber membrane 4 is not greater than 500 nm, preferably not greater than 300 nm, and more preferably not greater than 200 nm.

[0051] Preferably, the system further comprises an ultrasonic mechanism 6 . The ultrasonic mechanism 6 is arranged in the electrolytic cell 303 and located in the middle of the multiple layers of the nanofiber membranes 4 .

[0052] Preferably, the anode 301 and the cathode 302 are both carbonaceous electrodes.

[0053] Preferably, the system further comprises a post-processing unit, which comprises an outer barrel 7, an inner barrel 8 and a stirring mechanism 9. The outer barrel 7 is a closed cylindrical structure, the inner barrel 8 is coaxially sleeved inside the outer barrel 7, and sieve holes 801 are provided on the side wall and the bottom wall of the inner barrel 8. The stirring mechanism 9 is arranged inside the inner barrel 8. A main feed port 802 and a main liquid inlet 803 are also provided on the top wall of the inner barrel 8. The main feed port 802 is connected to the discharge port of the electrolytic cell 303 through the feed pipe 308. The main liquid inlet 803 is connected to the liquid storage tank 10 through the liquid inlet pipe 804.

[0054] Preferably, the stirring mechanism 9 includes a stirring motor 901, a stirring shaft 902 and a stirring paddle 903. The stirring motor 901 is mounted on the top wall of the outer barrel 7. The upper end of the stirring shaft 902 is connected to the stirring motor 901, and the lower end of the stirring shaft 902 sequentially penetrates the top wall of the outer barrel 7 and the top wall of the inner barrel 8 downwards and then extends to the inside of the inner barrel 8 or further penetrates the bottom wall of the inner barrel 8 downwards and then extends to the lower side of the bottom wall of the inner barrel 8, and the stirring shaft 902 is movably connected to the top wall of the outer barrel 7 and the top wall or bottom wall of the inner barrel 8 through bearings. The stirring paddle 903 is mounted on the stirring shaft 902 located below the top wall of the inner barrel 8.

[0055] Preferably, the stirring paddle 903 is an arc-shaped stirring blade, and a serrated protrusion 904 is provided on the side of the blade in the rotation direction thereof.

[0056] Preferably, the bottom end of the outer barrel 7 is designed as a tapered discharge port that tapers downward. In the circumferential direction, ultrasonic blocks 11 are evenly laid on the bottom surface of the tapered discharge port.

[0057] Preferably, the pore size of the sieve hole 801 is not greater than 200 nm. Example 1

[0058] like Figure 1-5 As shown, a resource processing system for barium sulfide slag, the system includes: a pretreatment unit and an electrophoresis deep processing unit. Wherein, the pretreatment unit includes a crushing mechanism 1 and a washing mechanism 2 arranged in series. The electrophoresis deep processing unit includes an electrolysis mechanism 3 and a nanofiber membrane 4. The electrolysis mechanism 3 includes an anode 301, a cathode 302 and an electrolytic cell 303. The anode 301 and the cathode 302 are arranged in the electrolytic cell 303 or inserted in the electrolytic cell 303. The nanofiber membrane 4 is arranged inside the electrolytic cell 303 and is located between the anode 301 and the cathode 302. The electrolytic cell 303 is provided with an anode feed port 304 and a cathode feed port 305, wherein: the anode feed port 304 is arranged between the anode 301 and the nanofiber membrane 4, and the cathode feed port 305 is arranged between the nanofiber membrane 4 and the cathode 302. The discharge port of the washing mechanism 2 is connected to the anode feed port 304 through a pipeline. Example 2

[0059] Example 1 is repeated, except that a cation diaphragm 306 is further provided between the anode 301 and the anode feed port 304 in the electrolytic cell 303 , and an anion diaphragm 307 is further provided between the cathode 302 and the cathode feed port 305 . Example 3

[0060] Example 2 is repeated, except that the cathode feed port 305 is connected to the sulfate solution storage tank 5 through a liquid infusion pipeline 501. A flow control valve 502 is also provided on the liquid infusion pipeline 501. Example 4

[0061] The embodiment 3 is repeated, except that multiple layers of the nanofiber membrane 4 are arranged between the anode 301 and the cathode 302. The gaps between the multiple layers of the nanofiber membrane 4 are the same or different. The pore size of the nanofiber membrane 4 is not greater than 200 nm. Example 5

[0062] The example 4 is repeated, except that the system further includes an ultrasonic mechanism 6. The ultrasonic mechanism 6 is arranged in the electrolytic cell 303 and located in the middle of the multiple layers of the nanofiber membranes 4. Example 6

[0063] Example 5 is repeated, except that the anode 301 and the cathode 302 are both carbonaceous electrodes. Example 7

[0064] Example 6 is repeated, except that the system further includes a post-processing unit, which includes an outer barrel 7, an inner barrel 8 and a stirring mechanism 9. The outer barrel 7 is a closed cylindrical structure, and the inner barrel 8 is coaxially sleeved inside the outer barrel 7, and sieve holes 801 are provided on the side wall and the bottom wall of the inner barrel 8. The stirring mechanism 9 is arranged inside the inner barrel 8. A main feed port 802 and a main liquid inlet 803 are also provided on the top wall of the inner barrel 8. The main feed port 802 is connected to the discharge port of the electrolytic cell 303 through the feed pipe 308. The main liquid inlet 803 is connected to the liquid storage tank 10 through the liquid inlet pipe 804. Example 8

[0065] Repeat Example 7, except that the stirring mechanism 9 includes a stirring motor 901, a stirring shaft 902 and a stirring paddle 903. The stirring motor 901 is mounted on the top wall of the outer barrel 7. The upper end of the stirring shaft 902 is connected to the stirring motor 901, and the lower end of the stirring shaft 902 sequentially penetrates the top wall of the outer barrel 7 and the top wall of the inner barrel 8 downwards and then extends to the inside of the inner barrel 8 or further penetrates the bottom wall of the inner barrel 8 downwards and then extends to the lower side of the bottom wall of the inner barrel 8, and the stirring shaft 902 is movably connected to the top wall of the outer barrel 7 and the top wall or bottom wall of the inner barrel 8 through bearings. The stirring paddle 903 is mounted on the stirring shaft 902 located below the top wall of the inner barrel 8. Example 9

[0066] Example 8 is repeated, except that the stirring paddle 903 is an arc-shaped stirring blade, and a serrated protrusion 904 is also provided on the side of the blade in the rotation direction. Example 10

[0067] The embodiment 9 is repeated, except that the bottom end of the outer barrel 7 is designed as a tapered discharge port with a downwardly tapered opening. Ultrasonic blocks 11 are evenly laid on the bottom surface of the tapered discharge port in the circumferential direction. Embodiment 11

[0068] Example 10 is repeated, except that the pore size of the sieve hole 801 is not greater than 120 nm.

Claims

1. A resource processing system for barium sulfide slag, characterized in that: The system comprises: a pretreatment unit and an electrophoresis deep treatment unit; wherein the pretreatment unit comprises a crushing mechanism (1) and a washing mechanism (2) which are sequentially arranged in series; the electrophoresis deep treatment unit comprises an electrolysis mechanism (3) and a nanofiber membrane (4); the electrolysis mechanism (3) comprises an anode (301), a cathode (302) and an electrolytic cell (303); the anode (301) and the cathode (302) are arranged in the electrolytic cell (303) or inserted in the electrolytic cell (303); the nanofiber The membrane (4) is arranged inside the electrolytic cell (303) and is located between the anode (301) and the cathode (302); the electrolytic cell (303) is provided with an anode feed port (304) and a cathode feed port (305), wherein: the anode feed port (304) is arranged between the anode (301) and the nanofiber membrane (4), and the cathode feed port (305) is arranged between the nanofiber membrane (4) and the cathode (302); and the discharge port of the washing mechanism (2) is connected to the anode feed port (304) through a pipeline.

2. The system according to claim 1, characterized in that: In the electrolytic cell (303), a cation diaphragm (306) is provided between the anode (301) and the anode feed port (304); and an anion diaphragm (307) is provided between the cathode (302) and the cathode feed port (305).

3. The system according to claim 2, characterized in that: The cathode feed port (305) is connected to the sulfate solution storage tank (5) via a liquid infusion pipeline (501); a flow control valve (502) is also provided on the liquid infusion pipeline (501).

4. The system according to any one of claims 1 to 3, characterized in that: Multiple layers of the nanofiber membrane (4) are arranged between the anode (301) and the cathode (302); the gaps between the multiple layers of the nanofiber membrane (4) are the same or different; and the pore size of the nanofiber membrane (4) is not greater than 500 nm.

5. The system according to claim 4, characterized in that: The pore size of the nanofiber membrane (4) is no greater than 300 nm.

6. The system according to claim 5, characterized in that: The pore size of the nanofiber membrane (4) is no greater than 200 nm.

7. The system according to claim 4, characterized in that: The system further comprises an ultrasonic mechanism (6); the ultrasonic mechanism (6) is arranged in the electrolytic cell (303) and located in the middle of the multiple layers of the nanofiber membrane (4); and / or The anode (301) and cathode (302) are both carbonaceous electrodes.

8. The system according to claim 5 or 6, characterized in that: The system further comprises an ultrasonic mechanism (6); the ultrasonic mechanism (6) is arranged in the electrolytic cell (303) and located in the middle of the multiple layers of the nanofiber membrane (4); and / or The anode (301) and the cathode (302) are both carbonaceous electrodes.

9. The system according to any one of claims 1-3, 5-7, characterized in that: The system further comprises a post-processing unit, the post-processing unit comprising an outer barrel (7), an inner barrel (8) and a stirring mechanism (9); the outer barrel (7) is a closed cylindrical structure, the inner barrel (8) is coaxially sleeved and arranged inside the outer barrel (7), and the side wall and the bottom wall of the inner barrel (8) are both provided with sieve holes (801); the stirring mechanism (9) is arranged inside the inner barrel (8); a main feed inlet (802) and a main liquid inlet (803) are also provided on the top wall of the inner barrel (8); the main feed inlet (802) is connected to the discharge port of the electrolytic cell (303) through a feed delivery pipeline (308); and the main liquid inlet (803) is connected to the liquid storage tank (10) through a liquid inlet pipeline (804).

10. The system according to claim 4, characterized in that: The system further comprises a post-processing unit, the post-processing unit comprising an outer barrel (7), an inner barrel (8) and a stirring mechanism (9); the outer barrel (7) is a closed cylindrical structure, the inner barrel (8) is coaxially sleeved and arranged inside the outer barrel (7), and the side wall and the bottom wall of the inner barrel (8) are both provided with sieve holes (801); the stirring mechanism (9) is arranged inside the inner barrel (8); a main feed inlet (802) and a main liquid inlet (803) are also provided on the top wall of the inner barrel (8); the main feed inlet (802) is connected to the discharge port of the electrolytic cell (303) through a feed delivery pipeline (308); and the main liquid inlet (803) is connected to the liquid storage tank (10) through a liquid inlet pipeline (804).

11. The system according to claim 9, characterized in that: The stirring mechanism (9) comprises a stirring motor (901), a stirring shaft (902) and a stirring paddle (903); the stirring motor (901) is mounted on the top wall of the outer barrel (7); the upper end of the stirring shaft (902) is connected to the stirring motor (901), and the lower end of the stirring shaft (902) sequentially penetrates downwardly through the top wall of the outer barrel (7) and the top wall of the inner barrel (8) and then extends to the interior of the inner barrel (8) or further penetrates downwardly through the bottom wall of the inner barrel (8) and then extends to the lower side of the bottom wall of the inner barrel (8), and the stirring shaft (902) is movably connected to the top wall of the outer barrel (7) and the top wall or bottom wall of the inner barrel (8) through bearings; the stirring paddle (903) is mounted on the stirring shaft (902) located below the top wall of the inner barrel (8).

12. The system according to claim 10, characterized in that: The stirring mechanism (9) comprises a stirring motor (901), a stirring shaft (902) and a stirring paddle (903); the stirring motor (901) is mounted on the top wall of the outer barrel (7); the upper end of the stirring shaft (902) is connected to the stirring motor (901), and the lower end of the stirring shaft (902) sequentially penetrates downwardly through the top wall of the outer barrel (7) and the top wall of the inner barrel (8) and then extends to the interior of the inner barrel (8) or further penetrates downwardly through the bottom wall of the inner barrel (8) and then extends to the lower side of the bottom wall of the inner barrel (8), and the stirring shaft (902) is movably connected to the top wall of the outer barrel (7) and the top wall or bottom wall of the inner barrel (8) through bearings; the stirring paddle (903) is mounted on the stirring shaft (902) located below the top wall of the inner barrel (8).

13. The system according to claim 11 or 12, characterized in that: The stirring paddle (903) is an arc-shaped stirring blade, and a sawtooth-shaped protrusion (904) is also provided on the side of the blade in the rotation direction.

14. The system according to claim 13, characterized in that: The bottom end of the outer barrel (7) is designed as a tapered discharge port that tapers downward; in the circumferential direction, ultrasonic blocks (11) are evenly laid on the bottom surface of the tapered discharge port.

15. The system according to claim 13, characterized in that: The pore size of the sieve hole (801) is not greater than 200 nm.

16. The system according to claim 14, characterized in that: The pore size of the sieve hole (801) is not greater than 200 nm.

Images