CN210796648U - Production system for tellurium refining - Google Patents
Production system for tellurium refining Download PDFInfo
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- CN210796648U CN210796648U CN201921764317.7U CN201921764317U CN210796648U CN 210796648 U CN210796648 U CN 210796648U CN 201921764317 U CN201921764317 U CN 201921764317U CN 210796648 U CN210796648 U CN 210796648U
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Abstract
The utility model provides a production system for tellurium is concise has solved the problem that the negative pole electrodeposition board washs thoroughly and the cleaning cycle length in the concise scheme of current tellurium. The utility model comprises an electrolytic precipitation system, a plate electrode-tellurium separation system and a waste liquid treatment system; the electrolytic precipitation system comprises a cathode electrodeposition plate and an anode plate which are used for electrolyzing the electrolyte solution containing tellurium, and the tellurium in the electrolyte solution is accumulated and precipitated on the cathode electrodeposition plate after being electrolyzed; the electrode plate-tellurium separation system comprises a cleaning system for cleaning the cathode electrodeposition plate and a separation device for separating tellurium on the cathode electrodeposition plate; the cleaning system comprises a rotational flow soaking and washing tank, a spraying and washing tank and an ultrasonic washing tank, pure water in the rotational flow soaking and washing tank rotates in a vertical plane, and the separating device comprises a powder collecting tank and a beater used for beating the oscillating cathode electrodeposition plate. The cathode electrodeposition plate is cleaned by adopting a rotational flow soaking cleaning tank, a spraying cleaning tank and an ultrasonic cleaning tank, and the cleaning is thorough and short in cleaning period.
Description
Technical Field
The utility model relates to a metal refining purification technical field especially indicates a production system for tellurium is concise.
Background
Existing schemes for tellurium refining:
yuan Jing Q/ZYJ 05.01.04.05-2005 Te ingot technical operating Specification
6.6 liquid preparation
6.6.1 solid: liquid ═ 1: 5
6.6.2 temperature: not less than 90 DEG C
6.6.3 addition amount of sodium hydroxide: 0.8kg/kg TeO2～1kg/kgTeO2
6.6.4 addition amount of sodium sulfide: 2g/L to 4 g/L.
6.6.5 solution: te is more than or equal to 200g/L, Se is less than or equal to 0.3g/L, and Pb is less than or equal to 0.003 g/L.
6.7 electrodeposition
6.7.1 bath electrolyte composition (g/L):
Te：180～220 NaOH：80～120 Se≤0.3 Cu：≤0.003 Pb≤0.003
6.7.2 temperature: 20-30 DEG C
6.7.3 when electrolyzing, the new solution is added irregularly to make Te content not less than 130 g/L.
6.7.4 Current Density: 25A/m2～35A/m2
6.7.5 cell voltage: 1.5V-2.5V
6.7.6 Current intensity 50A-80A
6.7.7 homopolar distances: 110mm
6.7.8 stainless steel plate anode: 430mm by 370mm by 5mm
6.7.9 stainless steel plate cathode: 450mm × 390mm × 5mm
6.7.10 electrolytic cycle: not less than 15 days
6.7.11 each tank is provided with 7 pieces of anodes and 6 pieces of cathodes
6.8 casting mold
6.8.1 the tellurium separated out must be washed by hot water for 48h, washed to remove sodium ions and then dried.
6.8.2 melting temperature: 550-650 deg.C
The existing scheme for tellurium refining has the following problems: 1. the electrowinning speed is slow and the electrowinning period is long (15 days); incomplete cleaning of the cathode electrodeposition plate and long cleaning period (48 hours); 3. the flue gas treatment device is clumsy and affects the inlet and outlet of the electrodeposition cathode.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the negative pole electrodeposition plate washs not thoroughly and the cleaning cycle length among the current tellurium refining scheme that exists among the background art, the utility model provides a production system for tellurium is concise.
The technical scheme of the utility model is that: a production system for tellurium refining comprises an electrolytic precipitation system, an electrode plate-tellurium separation system and a waste liquid treatment system; the electrolytic precipitation system comprises a cathode electrodeposition plate and an anode plate which are used for electrolyzing the electrolyte solution containing tellurium, and the tellurium in the electrolyte solution is accumulated and precipitated on the cathode electrodeposition plate after being electrolyzed; the electrode plate-tellurium separation system comprises a cleaning system for cleaning the cathode electrodeposition plate and a separation device for separating tellurium on the cathode electrodeposition plate; the cleaning system comprises a rotational flow soaking and washing tank, a spraying and washing tank and an ultrasonic washing tank, pure water in the rotational flow soaking and washing tank rotates in a vertical plane, and the separating device comprises a powder collecting tank and a beater used for beating the oscillating cathode electrodeposition plate.
The electrolytic precipitation system comprises a circulating liquid storage tank and an electrodeposition tank for electrolytically precipitating tellurium, wherein the circulating liquid storage tank is used for containing an electric effusion prepared by dissolving tellurium dioxide into a sodium hydroxide solution, the circulating liquid storage tank is connected with an electric effusion liquid inlet and an electric effusion liquid outlet of the electrodeposition tank through an electric effusion conveying pipe network, and a circulating pump for providing power for the flow of the electric effusion is arranged on the electric effusion conveying pipe network; a plurality of anode plates and cathode electrodeposition plates are arranged in the electrodeposition tank, the anode plates and the cathode electrodeposition plates are electrically connected with a rectification power supply, and the cathode electrodeposition plates are hoisted to the electrode plate-tellurium separation system for treatment through a hoisting system.
The hoisting system comprises a travelling crane rail erected right above the electrodeposition tank, a slidable travelling crane is arranged on the travelling crane rail, and a lifting sling for hoisting the cathode electrodeposition plate is arranged at the lower part of the travelling crane.
The lifting sling comprises an electric hoist and a lifting hook, the lifting hook is arranged on a lifting chain of the electric hoist, and a hook groove matched with the lifting hook is formed in the upper portion of the cathode electrodeposition plate.
The system comprises two centrifugal vacuum dryers; one of the centrifugal vacuum dryers is connected with the electrolytic precipitation system to form a waste liquid treatment system, and the waste liquid treatment system is used for separating and extracting the electro-deposition liquid with the tellurium content lower than the requirement; and the other centrifugal vacuum dryer is connected with the separation device and is used for dehydrating, drying and separating the separated tellurium crystals to obtain tellurium powder.
The electric dropsy conveying pipe network is provided with a tee joint and is provided with a valve I; one inlet of the tee joint is connected with the circulating pump and the circulating liquid storage tank; the other inlet of the tee joint is connected with the centrifugal vacuum dryer, and a valve II is arranged on a connecting pipeline of the tee joint and the centrifugal vacuum dryer.
The upper portion of the electrowinning cell passes through the gas box cover, side air suction chambers for discharging separated gas are arranged on two sides of the electrowinning cell, a gas passing table plate is arranged on the upper portion of each side air suction chamber, a ventilating air distribution hole is formed in the middle of the gas passing table plate, a smoke hood is arranged right above the air distribution hole, and the rear portion of the smoke hood is connected with a smoke pipeline.
The electrodeposition tank is internally provided with a plurality of vertical sub conductive copper bars, and the tops of the sub conductive copper bars are provided with overflow grooves formed by enclosing a partition plate and the tank body of the electrodeposition tank.
The electric liquid inlet is positioned at the lower part of the electric liquid tank, and the horizontal plane height of the electric liquid outlet is higher than that of the electric liquid inlet.
The utility model has the advantages that: 1. the electrowinning speed is high and the electrowinning period is short (6 days); 2. cleaning the cathode electrodeposition plate by adopting a rotational flow soaking washing tank, a spraying washing tank and an ultrasonic washing tank, wherein the cleaning is thorough and the cleaning period is short (20 minutes); 3. the layout of the flue gas treatment device avoids the inlet and outlet of the electrodeposition cathode, and avoids influencing the inlet and outlet actions of the electrodeposition cathode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a diagram of an electrolytic precipitation system for tellurium refining according to the present invention;
FIG. 2 is a diagram of a system for cleaning electrode plates for tellurium refining according to the present invention;
FIG. 3 is a schematic structural diagram of a hoisting system for the electrode plate in FIG. 2;
FIG. 4 is a schematic structural view of the electrodeposition cell of the present invention from a front view angle;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a rear view of FIG. 4;
FIG. 7 is a top view of FIG. 4;
FIG. 8 is a schematic structural view of the spray washing tank of the present invention;
FIG. 9 is a right side view of FIG. 8;
fig. 10 is a schematic structural view of the centrifugal vacuum dryer of the present invention.
In the figure, 1, an electrodeposition tank, 2, a circulating liquid storage tank, 3, 1 circulating pump, 4, a rectifying power supply, 5, a main cathode copper bar on the tank, 6, a main anode copper bar on the tank, 7, a sub conductive copper bar, 8, a cathode electrodeposition plate and 9, an anode plate; 10. a rotational flow soaking washing tank, 11, a spraying washing tank, 12, a powder collecting tank, 13, an ultrasonic washing tank, 14, a lifting sling, 15, a traveling crane and 16, a traveling crane track; 17. the centrifugal vacuum dryer comprises 18 parts of an electric effusion conveying pipe network, 19 parts of an air suction chamber, 20 parts of a side air suction chamber, 21 parts of air distribution holes, 22 parts of an electric effusion liquid inlet, 23 parts of an electric effusion liquid outlet, 24 parts of an overflow liquid outlet, 25 parts of a cathode and anode insulation bakelite, 26 parts of a sub copper bar insulation bakelite, 27 parts of an electrode column, 28 parts of an overflow tank, 29 parts of a tank hoop, 30 parts of a hoop tank sleeve, 31 parts of an air tank cover, 32 parts of an air tank cover, 33 parts of a main copper bar cover, 34 parts of a beater, 35 parts of an air hood and 36 parts of a flue gas pipeline.
Detailed Description
The technical solutions in the embodiments of the present invention will be made clear below by referring to the attached drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
Example 1: a production system for tellurium refining comprises an electrolytic precipitation system, an electrode plate-tellurium separation system and a waste liquid treatment system; as shown in fig. 1, the electrolytic precipitation system comprises a circulation liquid storage tank 2 and an electrodeposition tank 1 for electrolytically precipitating tellurium, wherein the circulation liquid storage tank 2 is used for containing an electrowinning liquid prepared by dissolving tellurium dioxide into a sodium hydroxide solution, and the circulation liquid storage tank 2 is connected with an electrowinning liquid inlet 22 and an electrowinning liquid outlet 23 of the electrodeposition tank 1 through an electrowinning liquid conveying pipe network 18.
As shown in figures 4, 5, 6 and 7, the liquid loading port 22 is positioned at the lower part of the electrodeposition tank 1, the horizontal level of the liquid loading port 23 is higher than that of the liquid loading port 22, and electrodeposition can reduce precipitation of lead, selenium and arsenic and improve the quality of tellurium powder by adopting a high-current and parallel liquid flow technology (lower inlet and upper outlet, adjustable flow). A plurality of vertical sub conductive copper bars 7 are arranged in the electrodeposition tank 1, and an overflow groove 28 formed by enclosing a partition plate and the tank body of the electrodeposition tank 1 is arranged at the top of each sub conductive copper bar 7. The upper part of the electrowinning cell 1 passes through a gas box cover 31, side air suction chambers 20 for discharging separated gas are arranged on two sides of the electrowinning cell 1, a gas passing plate 32 is arranged on the upper part of the side air suction chambers 20, a ventilating air distribution hole 21 is arranged in the middle of the gas passing plate 32, a smoke hood 35 is arranged right above the air distribution hole 21, and the rear part of the smoke hood 35 is connected with a smoke pipeline 36.
The system comprises two centrifugal vacuum dryers 17 in total, and a circulating pump 3 for providing power for the flow of the electro-deposition liquid is arranged on an electro-deposition liquid conveying pipe network 18; the electric liquid conveying pipe network 18 is provided with a tee joint, and the electric liquid conveying pipe network 18 is provided with a valve I; one inlet of the tee joint is connected with the circulating pump 3 and the circulating liquid storage tank; the other inlet of the tee joint is connected with the centrifugal vacuum dryer 17 to form a waste liquid treatment system, and a valve II is arranged on a connecting pipeline of the tee joint and the centrifugal vacuum dryer 17. When the tellurium content of the liquid in the electro-deposition tank 1 is detected to be lower than the requirement (not lower than 130g/L), the outlet valve of the circulating pump 3 is switched to the centrifugal vacuum dryer 17 for filtration, the liquid after filtration is sent into a rear liquid tank to be treated, and the filtered slag (lead, selenium and arsenic) can be sent into a distillation production system for separation and extraction.
A plurality of anode plates 9 and cathode electrodeposition plates 8 are arranged in the electrodeposition tank 1, the anode plates 9 and the cathode electrodeposition plates 8 are electrically connected with the rectification power supply 4, and the cathode electrodeposition plates 8 are hoisted to the electrode plate-tellurium separation system for treatment by the hoisting system. As shown in fig. 2 and 3, the hoisting system comprises a travelling crane rail 16 erected right above the electrodeposition tank 1, a slidable travelling crane 15 is arranged on the travelling crane rail 16, a lifting sling 14 for hoisting the cathode electrodeposition plate 8 is arranged at the lower part of the travelling crane 15, the lifting sling 14 comprises an electric hoist and a lifting hook, the lifting hook is arranged on a lifting chain of the electric hoist, and a hook groove matched with the lifting hook is arranged at the upper part of the cathode electrodeposition plate 8.
As shown in fig. 1 and 2, the electrode plate-tellurium separation system comprises a cleaning system for cleaning the cathodic electrodeposition plate 8 and a separation device for separating tellurium on the cathodic electrodeposition plate 8; the separating apparatus includes a powder collection tank 12 and a beater 34 for beating the oscillating cathode electrodeposition plate 8. The powder collecting groove 12 is connected with another centrifugal vacuum dryer 17 and is used for dehydrating, drying and separating the separated tellurium crystals to obtain tellurium powder.
The cleaning system includes a swirling-flow bubble-washing tank 10, a shower washing tank 11 (refer to fig. 8 and 9), and an ultrasonic washing tank 13, and pure water in the swirling-flow bubble-washing tank 10 rotates in a vertical plane. The pure water in the rotational flow soaking washing tank 10 rotates in a vertical plane, and the rotation driving force source of the pure water can be realized by adopting an electric driving stirring mode. Adopting a primary rotational flow bubble washing tank 10(10 minutes) (pure water rotates in a vertical plane), spraying a washing tank 11 again for washing for 3 minutes, and in order to reduce the water consumption and improve the tellurium powder grade, the washing solution is scrapped step by step, after two-stage washing, lightly knocking (rapping) a cathode electrodeposition plate 8 by a wood rod manually, so that the tellurium powder smoothly slides into a powder collecting tank 12; the cathode electrodeposition plate 8 is firstly hung into the ultrasonic cleaning tank 13, is hung out after being cleaned for 2 minutes, and is dried by a hot air blower to blow the electrode column and returns to the tellurium electrodeposition tank 1 to reset in time; the tellurium powder is guided into an ultrasonic cleaning tank 13 to be washed to be neutral (5 minutes), and a centrifugal vacuum dryer 17 is used for dehydration, drying and separation to obtain high-grade tellurium powder.
Further, taking 100 kg of electro-deposited tellurium produced every day as an example, a specific installation arrangement description is carried out:
firstly, dissolving purified tellurium dioxide into a sodium hydroxide solution to prepare an electro-deposition liquid, feeding the electro-deposition liquid into a circulating tank, pumping the electro-deposition liquid into an electro-deposition tank through a circulating pump, manufacturing an insoluble anode plate and a cathode electro-deposition plate by adopting a stainless steel plate, discharging hydroxyl at an anode to generate oxygen for precipitation, accumulating and precipitating tellurium at the cathode electro-deposition plate, and leading, selenium and arsenic in the electro-deposition liquid.
Electric liquid composition: te is 200-230 g/l, NaOH is 100-120 g/l, Se is less than 0.3g/l, Pb is less than 0.003g/l, Cu<0.003g/l, 20-30 ℃ of electroeffusion temperature and 50A/m of current density2。
The electro-equivalent of tellurium is 1.194 g/A.h.
Cathode area calculation M:
100*1000＝M*50*24*1.194*0.7
then M is 99.7M2。
Effective area of the cathodic electrodeposition plate: the cell is convenient to be put into and taken out, the width and the height of the plate are 500mm, and the area of a single cathode electrodeposition plate is 0.5m2(double-sided). A total of 99.7 ÷ 0.5 ÷ 199.4 pieces of cathodic electrodeposition sheet are required.
6 rows of large tanks are adopted, each row of tanks comprises 5 small tanks, and each small tank comprises 8 cathode electrodeposition plates and 9 anode plates; thus, the total cathode electrodeposition plates 40X6 are 240 plates, and the total anode plates 45X6 are 270 plates.
The electrodeposition tank adopting a large-current and parallel liquid flow technology (bottom-in and top-out, adjustable flow) can reduce the precipitation of lead, selenium and arsenic and improve the quality of tellurium powder; the total flow rate of each row of the electrodeposition cells is 4m3Per h, circulation reservoir volume 2m3(ii) a Stainless steel circulating made of 304 materialA ring pump; the head tank is not provided.
For convenient operation, the homopolar center distance is 90 mm; the inner size of each small electrodeposition cell is as follows: 820X 780X 665, and the inner size of the single-row electrowinning cell is 3320X 820X 780.
Actual single cell effective cathode area: 8 × 2 × 0.5 × 0.5 ═ 4m2
The current intensity is: 4 x 50 ═ 200A
Electrodeposition cell voltage: 8-10V
Actual single-tank daily yield: 200 × 24 × 1.194 × 0.7 ═ 4012g
Daily yield of single-row tank: 5 × 4012 ═ 20060g
Daily yield of 6 rows of large tanks: 6X 20060-120360 g-120.36 Kg
And (3) electrodeposition period: 6 days
The electrodeposition tank, the washing tank and the small traveling crane fixed above the electrodeposition tank are combined into a single-row production line; the travelling crane support frame is made of 304 stainless steel.
Adopting a primary rotational flow bubble washing tank (10 minutes) (pure water rotates in a vertical plane), spraying the washing tank again for washing for 3 minutes, scrapping the washing solution step by step in order to reduce the water consumption and improve the tellurium powder grade, and after two-stage washing, lightly knocking (rapping) the cathode electrodeposition plate by a wood rod manually, so that the tellurium powder smoothly slides into a powder collecting tank; the cathode electrodeposition plate is firstly hung into the ultrasonic cleaning tank, is hung out after being cleaned for 2 minutes, and is dried by a hot air blower, and the electrode column is timely returned to the electrodeposition tank for resetting; the tellurium powder is led into an ultrasonic cleaning tank to be washed to be neutral (5 minutes), and a centrifugal vacuum dryer is used for dehydration, drying and separation to obtain high-grade tellurium powder.
The electrodeposition tank is provided with an upper air suction chamber and two side air suction chambers, the two chambers are communicated through air distribution holes, and the system draws air to pump waste gas to a flue gas treatment main pipeline.
Each row of the electrodeposition system comprises: 1 row of electrodeposition tanks, 1 circulating liquid storage tank, 1 circulating pump, 1 rectifying power supply, 2 sets of main conductive copper bars, 4 sets of sub conductive copper bars, 40 stainless steel cathode electrodeposition plates and 45 stainless steel anode plates on the tanks; a rotational flow soaking washing tank, a spraying washing tank, a powder collecting tank, an ultrasonic washing tank, a lifting appliance and 1 small-sized traveling crane; the system is provided with a centrifugal dryer and an electric effusion conveying pipe network.
When the tellurium content of the electro-deposition bath solution is detected to be lower than the requirement (not lower than 130g/L), the valve I is closed, the valve II is opened, and the electro-deposition solution in the circulating pump bar is pumped into a centrifugal vacuum dryer for dehydration, drying and separation.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (9)
1. A production system for tellurium refining comprises an electrolytic precipitation system, an electrode plate-tellurium separation system and a waste liquid treatment system; the method is characterized in that: the electrolytic precipitation system comprises a cathode electrodeposition plate (8) and an anode plate (9) for electrolyzing the electrolyte solution containing tellurium, wherein the tellurium in the electrolyte solution is accumulated and precipitated on the cathode electrodeposition plate (8) after being electrolyzed; the electrode plate-tellurium separation system comprises a cleaning system for cleaning the cathode electrodeposition plate (8) and a separation device for separating tellurium on the cathode electrodeposition plate (8); the cleaning system comprises a rotational flow soaking and washing tank (10), a spraying washing tank (11) and an ultrasonic washing tank (13), pure water in the rotational flow soaking and washing tank (10) rotates in a vertical plane, and the separating device comprises a powder collecting tank (12) and a beater (34) for beating the oscillating cathode electrodeposition plate (8).
2. A production system for tellurium refining as claimed in claim 1, wherein: the electrolytic precipitation system comprises a circulating liquid storage tank (2) and an electro-deposition tank (1) for electrolytically precipitating tellurium, wherein the circulating liquid storage tank (2) is used for containing electro-deposition liquid prepared by dissolving tellurium dioxide into sodium hydroxide solution, the circulating liquid storage tank (2) is connected with an electro-deposition liquid inlet (22) and an electro-deposition liquid outlet (23) of the electro-deposition tank (1) through an electro-deposition liquid conveying pipe network (18), and a circulating pump (3) for providing power for the flow of the electro-deposition liquid is arranged on the electro-deposition liquid conveying pipe network (18); a plurality of anode plates (9) and cathode electrodeposition plates (8) are arranged in the electrodeposition tank (1), the anode plates (9) and the cathode electrodeposition plates (8) are electrically connected with the rectification power supply (4), and the cathode electrodeposition plates (8) are hoisted to the electrode plate-tellurium separation system for treatment through the hoisting system.
3. A production system for tellurium refining as claimed in claim 2, wherein: the hoisting system comprises a travelling crane rail (16) erected right above the electrodeposition tank (1), a slidable travelling crane (15) is arranged on the travelling crane rail (16), and a lifting sling (14) for hoisting the cathode electrodeposition plate (8) is arranged at the lower part of the travelling crane (15).
4. A production system for tellurium refining as claimed in claim 3, wherein: the lifting sling (14) comprises an electric hoist and a lifting hook, the lifting hook is arranged on a lifting chain of the electric hoist, and a hook groove matched with the lifting hook is arranged at the upper part of the cathode electrodeposition plate (8).
5. A production system for tellurium refining as claimed in claim 4, wherein: comprises two centrifugal vacuum dryers (17); one of the centrifugal vacuum dryers (17) is connected with the electrolytic precipitation system to form a waste liquid treatment system, and the waste liquid treatment system is used for separating and extracting the electro-deposition liquid with the tellurium content lower than the requirement; and the other centrifugal vacuum dryer (17) is connected with the separation device and is used for dehydrating, drying and separating the separated tellurium crystals to obtain tellurium powder.
6. A production system for tellurium refining as claimed in claim 5, wherein: the electric dropsy conveying pipe network (18) is provided with a tee joint, and the electric dropsy conveying pipe network (18) is provided with a valve I; one inlet of the tee joint is connected with the circulating pump (3) and the circulating liquid storage tank; the other inlet of the tee joint is connected with the centrifugal vacuum dryer (17), and a valve II is arranged on a connecting pipeline of the tee joint and the centrifugal vacuum dryer (17).
7. A production system for tellurium refining as claimed in claim 6, wherein: the upper portion of the electrodeposition tank (1) passes through the gas tank cover (31), side air suction chambers (20) used for discharging separated gas are arranged on two sides of the electrodeposition tank (1), a gas passing plate (32) is arranged on the upper portions of the side air suction chambers (20), air-permeable air distribution holes (21) are formed in the middle of the gas passing plate (32), a smoke hood (35) is arranged right above the air distribution holes (21), and the rear portions of the smoke hoods (35) are connected with a smoke pipeline (36).
8. A production system for tellurium refining as claimed in claim 7, wherein: a plurality of vertical sub-conductive copper bars (7) are arranged in the electrodeposition tank (1), and the top of each sub-conductive copper bar (7) is provided with an overflow groove (28) which is formed by enclosing a partition plate and the tank body of the electrodeposition tank (1).
9. A production system for tellurium refining as claimed in claim 8, wherein: the electric liquid inlet (22) is positioned at the lower part of the electric deposition groove (1), and the horizontal height of the electric liquid outlet (23) is higher than that of the electric liquid inlet (22).
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| CN201921764317.7U CN210796648U (en) | 2019-10-21 | 2019-10-21 | Production system for tellurium refining |
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