CN102959134A - Precious metal recovery device and recovery method - Google Patents
Precious metal recovery device and recovery method Download PDFInfo
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- CN102959134A CN102959134A CN2011800300778A CN201180030077A CN102959134A CN 102959134 A CN102959134 A CN 102959134A CN 2011800300778 A CN2011800300778 A CN 2011800300778A CN 201180030077 A CN201180030077 A CN 201180030077A CN 102959134 A CN102959134 A CN 102959134A
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Abstract
Provided is a recovery device and recovery method for recovering precious metals from waste liquid that contains precious metals using an electrolytic method. The disclosed recovery device and recovery method curbs the dispersion of precipitated particles and the amount of precipitate due to current anomalies, curbs short circuit failures due to anomalous deposition of precious metals resulting from electric-current constriction, and has even and stable deposition of precious metals. The precious metal recovery device is provided with a cylindrical expander cathode that is arranged along the inner circumference of a cylindrical metal container that forms an electrolytic cell and a cylindrical expander anode that is arranged along the exterior circumference of a pipe shaped anode. The upper part of the expander cathode is fixed to the upper shoulder of the metal container with a reverse L-shaped cross-section, the lower part of the expander cathode is fixed to the bottom of the metal container and both ends of the expander anode are fixed to the pipe shaped cathode with a C-shaped cross section.
Description
Technical field
The present invention relates to a kind of retrieving arrangement and recovery method, it is used for utilizing electrolytic process to reclaim precious metal from the waste liquid that comprises precious metal.
Background technology
For example, as the method that the precious metal that will remain in the various waste liquids that are called precious metal electrodeposit liquid reclaims, normal operation electrolysis (reduction) method.In utilizing the precious metal material retrieving arrangement of this electrolytic process, waste liquid is imported in the electrolyzer, insoluble anode and negative electrode are immersed in this waste liquid, by energising the metal ion reduction in the waste liquid is separated out.
As one of mode of precious metal recovery device, have the cylindrical container 217(electrolyzer that uses Fig. 3 record) precious metal recovery device 2(with reference to patent documentation 1).In this retrieving arrangement 2, consisted of by cylindrical container 217, anode 211 and cylindric negative electrode 216, this anode 211 is arranged on the central part of cylindrical container 217, and this cylindric negative electrode 216 is along week configuration in the container.And, when carrying out the precious metal recovery, the inlet of waste liquid from the container bottom imported, utilize anode 211 and cylindric negative electrode 216 with its electrolysis, and discharge by relief outlet from the opening of anode.And, utilize this operation, make the precious metal electrolytic reduction that will reclaim and separate out on the surface of negative electrode 216, become callable state.
This retrieving arrangement cylindraceous can make waste liquid continuously flow into and use.Therefore, except operating efficiency is higher, for example, with make tabular anode and negative electrode continuously the retrieving arrangement of stacked existing form No. 7-300692, Japanese kokai publication hei (etc.) compare, also have advantages of compact.
But, state before use in the retrieving arrangement of patent documentation 1 record of cylindrical vessel, also existing problems.That is to say, exist the precious metal of separating out owing to the precious metal of peeling off makes anode and negative electrode short circuit, to promote the consumption of anode from the situation of cathodic disbonding, or have the situation that to proceed electrolysis.This short circuit, special in the situation that separate out precious metal and become tabular, paper tinsel shape and easily produce.
In order to address this problem, as the precious metal recovery device 3(of other modes with reference to patent documentation 2), have: cylindrical container 310, the electrolyzer of its pie graph 4 records; Sheath 311, the center that it is configured in aforementioned container has opening in the bottom so that waste liquid from container section flow into to container bottom; Tubular negative electrode 312, it in the interior week of aforementioned negative electrode, configures netted the 1st cylindrical shell that electrically is connected with negative electrode along the interior week configuration of aforementioned container.In this retrieving arrangement, at first, with titanium punch metal processed along negative electrode interior week be rolled into tubular, two-layerly use as the 1st cylindrical shell this tubular article is overlapping.Owing to the 1st cylindrical shell works as negative electrode, therefore, although the precious metal of separating out also can be attached on the cylindrical shell, the shape of separating out precious metal becomes powdery, granular and be attached to surface and the inwall of cylindrical shell.This is separated out precious metal and remains on the cylindrical shell with the good state of stickiness, be difficult to produce owing to peeling off that cause and short circuit anode.In addition, for the precious metal of separating out at smooth tubular negative electrode, even owing to peeling off in the gap that yet remains on cylindrical shell and negative electrode, therefore can not produce that cause and short circuit anode by it.In addition, utilize anode to carry out the supply of waste liquid, with the anode bottom opening of tubulose, waste liquid is flowed into from anode top to the bottom.In the technology of patent documentation 2 records, to peel off and be deposited in the situation of container bottom from the 1st cylindrical shell at the precious metal of separating out of powdery, container bottom and anode may produce short circuit.Therefore carry out the supply of waste liquid and pass into continuously liquid from the anode bottom, the precious metal of separating out that can utilize current will be deposited in container bottom promotes to the periphery of container bottom, thereby can prevent this short circuit.
Patent documentation 1: TOHKEMY 2000-45089 communique
Patent documentation 2: TOHKEMY 2006-28555(Japanese Patent the 4151904th) number communique
Summary of the invention
But, even in the technology of these patent documentation 2 records, owing to the inequality that the current anomaly that causes produces the amount of separating out of rocking because of the 1st cylindrical shell that works as negative electrode, and unusually the separating out of the precious metal that causes because of the current concentration at cylindrical shell end place, therefore become metal powder and drop, can't fully suppress the short circuit that is caused by it.
Therefore, the object of the present invention is to provide a kind of precious metal recovery device and method for recovering precious metals, it is uneven by the amount of separating out or the precipitation particles that suppress to cause owing to above-mentioned current anomaly, and since the precious metal that causes because of current concentration unusually separate out the short circuit that causes, in can the dissolving when carrying out the refining of regenerant, make stable the separating out of in good condition, uniform precious metal.And, the object of the present invention is to provide a kind of precious metal that makes to separate out uniformly and stably, reclaim efficiently precious metal recovery device and the method for recovering precious metals of precious metal.
The inventor etc. attentively study, and carry out the many places improvement in the retrieving arrangement that uses cylindrical container and recovery method, have found to solve retrieving arrangement and the recovery method of above-mentioned problem.
Below mode of the present invention is illustrated in further detail.
Precious metal recovery device, it has: metal-made container cylindraceous, it consists of electrolyzer; The insulativity lid, it can also can be pulled down by airtight aforementioned metal container made, has the waste liquor stream outlet; Sheath, the center that it runs through the aforementioned dielectric lid makes waste liquid flow into to the bottom from top; The expansion negative electrode of tubular, it is along the interior week configuration of aforementioned metal container made; And the expanded anode of tubular, it is along the periphery configuration of aforementioned sheath, it is characterized in that, the upper shoulder of the top of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed with the section font of falling L, the bottom of the bottom of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed, and the two ends of aforementioned expanded anode and aforementioned sheath are connected and fixed with section コ font.
Here, the length of preferred aforementioned expanded anode is that the length of aforementioned expansion negative electrode multiply by the length after 0.5 ~ 0.95.
Aforementioned metal container made and aforementioned expansion negative electrode preferably consist of by a kind of in titanium, tantalum, niobium, zirconium and the hafnium or more than or equal to two kinds metal or alloy.
In addition, the central part of preferred aforementioned expansion negative electrode is the shape to the bulging of aforementioned expanded anode side.
In addition, sheath and expanded anode, preferred at least its surface is made of metal, alloy or the oxide compound of platinum family.
On the other hand, the method for recovering precious metals in the mode of the present invention, prepare in the method:
Sheath, its run through be arranged on the cylindrical metal container made can airtight and removable insulativity lid the center, this cylindrical metal container made consists of electrolyzer;
The expansion negative electrode, it is along metal-made container and interior week configuration thereof; The expanded anode of tubular, it is along the periphery configuration of sheath, and this method for recovering precious metals comprises: the liquor charging operation, in this operation, carry waste liquid from the Recycling of waste liquid groove of accommodating the waste liquid that comprises precious metal; Flow into operation, in this operation, the waste liquid of conveying is flowed in aforementioned sheath from top to the bottom; Electrowinning process, in this operation, the waste liquid that makes this inflow between aforementioned expansion negative electrode and aforementioned sheath on one side from the bottom to the top adverse current, Yi Bian carry out electrolysis; And circulating process, in this operation, make by the waste liquid of electrolysis and discharge from the waste liquor stream outlet, return to aforementioned Recycling of waste liquid groove by strainer, it is characterized in that, the upper shoulder of the top of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed with the section font of falling L, and the bottom of the bottom of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed, and the two ends of aforementioned expanded anode and aforementioned sheath are connected and fixed with section コ font.
Here, the length of preferred aforementioned expanded anode is that the length of aforementioned expansion negative electrode multiply by the length after 0.5 ~ 0.95.
Aforementioned metal container made and expansion negative electrode preferably consist of by a kind of in titanium, tantalum, niobium, zirconium and the hafnium or more than or equal to two kinds metal or alloy.
In addition, the central part of preferred aforementioned expansion negative electrode is the shape to the bulging of aforementioned expanded anode side.
In addition, aforementioned sheath and expanded anode, preferred at least its surface is made of metal, alloy or the oxide compound of platinum family.
The effect of invention
According to the precious metal recovery device in the mode of the present invention and method for recovering precious metals, uneven by the amount of separating out or the precipitation particles that suppress to cause owing to current anomaly, and since the precious metal that causes because of current concentration unusually separate out the short circuit that causes, thereby in can the dissolving when carrying out the refining of regenerant, make stable the separating out of in good condition, uniform precious metal.And, according to precious metal recovery device of the present invention and method for recovering precious metals, precious metal is separated out uniformly and stably, thereby can reclaim efficiently precious metal.
Description of drawings
Fig. 1 is the summary section of an embodiment of expression precious metal recovery device of the present invention.
Fig. 2 is the sketch chart of an embodiment relating to of expression method for recovering precious metals of the present invention.
Fig. 3 is the figure of the profile construction of the existing precious metal recovery device of expression (patent documentation 1).
Fig. 4 is the figure of the profile construction of the existing precious metal recovery device of expression (patent documentation 2).
Embodiment
Below, in conjunction with utilizing electrolysis from the waste liquid that comprises precious metal, to carry out the sectional view (Fig. 1) of the precious metal recovery device of precious metal recycling, embodiments of the present invention are described.Precious metal recovery device 1 in the present embodiment, by the expansion top of negative electrode 12 and the upper shoulder of metal-made container 10 are connected and fixed with the section font of falling L, the bottom of its underpart and metal-made container 10 is connected and fixed, thereby can suppress owing to rocking of negative electrode that cause with short circuit anode, perhaps because because of unusually separating out of causing of current anomaly and short circuit that precipitate drops and causes.In addition, although still can concentrate by generation current at the both ends of expansion negative electrode 12, but because two ends electrically are connected with metal-made container 10, so can suppress to the current concentration of two sections of negative electrode, thereby can suppress unusually to separate out the short circuit that causes owing to the precious metal that causes because of current concentration.This is connected and fixed and can carries out on the top of expansion negative electrode 12 and complete cycle or the part between bottom and the metal-made container 10.For being connected and fixed, expansion negative electrode 12 directly can be welded, also can weld via backing plate.Be connected and fixed in the situation that carry out complete cycle via backing plate, consider the circulation of waste liquid, preferably have the shape in hole at backing plate.Be connected and fixed in the situation that carry out a part, the inhibition that consideration is rocked, preferred top and bottom are being fixed more than or equal to two positions respectively.As mode of connection, can utilize common spot welding or pressure welding etc. to carry out, as long as but can electrically connect, be not limited to aforementioned manner.Expansion negative electrode 12 in the present embodiment can be individual layer, also can be multilayer.But if consider organic efficiency, then preferred development negative electrode 12 is multilayer.And if consider manufacturing cost and the transportation cost of device, then preferred development negative electrode 12 is 2 ~ 5 layers.
Expanded anode 13 in the present embodiment by its two ends and sheath 11 are connected and fixed with section コ font, can be avoided the current anomaly that causes owing to rocking of anode.This is connected and fixed and can carries out at the two ends of expanded anode 13 and complete cycle or the part between the sheath 11.For being connected and fixed, expanded anode 13 directly can be welded, also can weld via backing plate.Be connected and fixed in the situation that carry out complete cycle, consider the circulation of waste liquid, the junction of preferred top and bottom and sheath 11 has the shape in hole.Be connected and fixed in the situation that carry out a part, the inhibition that consideration is rocked, preferred two ends are being fixed more than or equal to two positions respectively.The bottom of the bottom of preferred development anode 13 and sheath 11 and electrolyte layers bottom are equidistant.
The length of the expanded anode 13 in the preferred present embodiment is for the length of expansion negative electrode 12 multiply by length after 0.5 ~ 0.95.Length at expanded anode 13 multiply by in the situation of the length after 0.95 above the length of expanding negative electrode 12, the Powdered precious metal of not only separating out is easily piled up in the bottom of metal-made container 10 and is caused short circuit, and can produce unusually separating out of expansion negative electrode place, 12 bottoms.The length of expanding negative electrode 12 at the curtailment of expanded anode 13 multiply by in the situation of the length after 0.5, distribution of current on the negative electrode can produce larger inequality, becomes the reason that the organic efficiencies such as the amount of separating out and precipitating metal shape dissolution time inhomogeneous, that be used for refining is elongated descend.And in the situation of considering the inhibition that organic efficiency descends, the length of preferred development anode 13 is that the length of expansion negative electrode 12 multiply by the length after 0.7 ~ 0.95.
Metal-made container 10 in the present embodiment and expansion negative electrode 12 preferably consist of by a kind of in titanium, tantalum, niobium, zirconium and the hafnium or more than or equal to two kinds metal or alloy.In the situation of using the metal or alloy except aforementioned metal, if for the refining after the precious metal (gold or platinum etc.) of separating out at metal-made container 10 and expansion negative electrode 12 By Electrolysis is reclaimed, and use the chloroazotic acid that often uses when the electrode dissolving is reclaimed, then there is the situation of metal-made container 10 and 12 dissolvings of expansion negative electrode.Perhaps, in the situation that the insoluble petals such as use stainless steel can be separated out the micro lead composition that is difficult to from the recovery part separation, in the refining of back, become problem.And, if consider low price, high working property and insoluble with chloroazotic acid, then more preferably titanium metal or its alloy.
Expansion negative electrode 12 in the present embodiment by becoming the shape of central part bulging, can be separated out more uniformly, can suppress current anomaly and with higher organic efficiency precious metal is separated out.The shape of so-called bulging, the central part that refers to expand negative electrode 12 is nearest apart from negative electrode, and cutting plane is the shape of circular arc.Adopt the reason of this shape to be, further suppress the current unevenness of cathode end, can carry out more uniform electrolysis.
Cornerwise major axis and the minor axis length of the diamond hole of expansion negative electrode 12 and expanded anode 13, respectively preferred 4 * 2 ~ 16 * 8mm.If curtailment 4 * 2mm then can produce owing to electro-adsorption the obstruction in hole prematurely, in addition, if length surpasses 16 * 8mm, then because surface-area diminishes, so organic efficiency descends.
Below, with Fig. 1 and Fig. 2 the method for recovering precious metals that uses the precious metal recovery device 1 that consists of shown in aforementioned is described.In the method for recovering precious metals of present embodiment, utilize pump 21 grades to carry waste liquid from the Recycling of waste liquid groove 20 of accommodating the waste liquid that comprises precious metal, the waste liquid of conveying is flowed into to the bottom from top in sheath 11, make the waste liquid of this inflow between expansion negative electrode 12 and above-mentioned sheath 11, carry out electrolysis on one side from the bottom to the top adverse current on one side, waste liquid is discharged from waste liquor stream outlet 15, return to Recycling of waste liquid groove 20 by strainer 22, this waste liquid that returns is circulated.At this moment, because the top of expansion negative electrode 12 and the upper shoulder of metal-made container 10 are connected and fixed to the L font with section, in addition, the bottom of expansion negative electrode 12 and the bottom of metal-made container 10 are connected and fixed, therefore can suppress since rocking of negative electrode that cause with short circuit anode, perhaps owing to unusually separating out of causing because of current anomaly and short circuit that precipitate drops and causes.In addition, although still can concentrate by generation current at the both ends of expansion negative electrode 12, but owing to being connected and fixed with metal-made container 10, therefore can suppress to the current concentration at negative electrode both ends, thereby can suppress owing to unusually separating out the short circuit that causes because of its precious metal that causes.Because two ends and the sheath 11 of expanded anode 13 are connected and fixed with section コ font, therefore can suppress the short circuit with negative electrode.With the metal powder that waste liquid flows out from waste liquor stream outlet 15, collected by the strainer 22 that in next process, arranges, can further suppress interelectrode short circuit.
In the method for recovering precious metals of present embodiment, the length of preferred development anode 13 is that the length of expansion negative electrode 12 multiply by the length after 0.5 ~ 0.95.Length at expanded anode 13 multiply by in the situation of the length after 0.95 above the length of expanding negative electrode 12, the Powdered precious metal of not only separating out is easily piled up in the bottom of metal-made container 10 and is caused short circuit, and can produce unusually separating out of expansion negative electrode place, 12 bottoms.The length of expanding negative electrode 12 at the curtailment of expanded anode 13 multiply by in the situation of the length after 0.5, distribution of current on the negative electrode can produce larger inequality, becomes the reason that the organic efficiencies such as the amount of separating out and precipitating metal shape dissolution time inhomogeneous, that be used for refining is elongated descend.And in the situation of considering the inhibition that organic efficiency descends, the length of preferred development anode 13 is that the length of expansion negative electrode 12 multiply by the length after 0.7 ~ 0.95.
Metal-made container 10 and expansion negative electrode 12 preferably consist of by a kind of in titanium, tantalum, niobium, zirconium and the hafnium or more than or equal to two kinds metal or alloy.In the situation of using the metal or alloy except aforementioned metal, if for the refining after the precious metal (gold or platinum etc.) of separating out at metal-made container 10 and expansion negative electrode 12 By Electrolysis is reclaimed, and use the chloroazotic acid that often uses when the electrode dissolving is reclaimed, then there is the situation of metal-made container 10 and 12 dissolvings of expansion negative electrode.Perhaps, in the situation that the insoluble metals such as use stainless steel can be separated out the micro lead composition that is difficult to from the recovery part separation, in the refining of back, also become problem.And, if consider low price, high working property and insoluble with chloroazotic acid, then more preferably titanium metal or its alloy.
Preferred development negative electrode 12 is the shape of central part bulging.Thus, can separate out more uniformly, can suppress current anomaly and with higher organic efficiency precious metal is separated out.The shape of so-called bulging, the central part that refers to expand negative electrode 12 is nearest apart from negative electrode, and cutting plane is the shape of circular arc.Adopt the reason of this shape to be, further suppress the current unevenness of cathode end, can carry out more uniform electrolysis.
Sheath 11 and expanded anode 13, preferred at least surface is made of metal, alloy or the oxide compound of platinum family.And aspect cost and weather resistance, also further preferably electroplatinizing or platinum alloy on the transition metal such as titanium perhaps apply iridium oxide or ruthenium oxide.
In the precious metal recovery device of present embodiment, the liquor charging speed in the precious metal recovery device of Recycling of waste liquid because of different as the species of metal ion in the waste liquid of object, electrolytic condition etc., but is preferably 5 ~ 30L/min.In the situation that liquor charging underspeed 5L/min, the precious metal concentration in the tank room may be uneven, easily causes inhomogeneous separating out, in the situation that surpass 30L/min, because the electrolytic recovery decrease in efficiency, reclaiming needs the long period, therefore not preferred.The current density of preferable alloy container made and expansion negative electrode is 0.05 ~ 0.30A/dm
2The not enough 0.05A/dm of current density at metal-made container and expansion negative electrode
2Situation under, in recovery, need the long period, surpassing 0.30A/dm
2Situation under, not only organic efficiency can not improve, and cost can increase.
In the method for recovering precious metals of present embodiment, be attached to precious metal on the negative electrode 12 of metal-made container 10 or expansion, be deposited in the precious metal of bottom of metal-made container 10 and the precious metal of being collected by strainer 22, owing to having suppressed unusually to separate out etc., therefore easily utilize chloroazotic acid or KCN solution as separation solution to carry out separate dissolved, can carry out improving be used to the purity that makes precious metal the refining of 1 order of magnitude degree.As separation solution, preferred use can be dissolved the chloroazotic acid of various precious metals simultaneously.
Embodiment
Below, in conjunction with Fig. 1 and Fig. 2, a mode of the embodiment of precious metal recovery device of the present invention is described.Along as the cylindrical metal container made 10(size of electrolyzer: internal diameter 50mm, height 700mm) interior week, the expansion negative electrode 12(size of configuration the first layer tubular: diameter 140mm, thickness of slab 1mm, length 685mm, the cornerwise length 6(major axis of diamond hole) * and the 3(minor axis) mm), and along the expansion negative electrode 12(size of the interior week configuration second layer tubular of metal-made container 10: diameter 130mm, thickness of slab 1mm, length 685mm, the cornerwise length 6(major axis of diamond hole) * the 3(minor axis) mm).On the other hand, insert sheath 11(size at the central part of metal-made container 10: external diameter 22mm, length 690mm, thickness of slab 2mm), along the expanded anode 13(size of the periphery configuration tubular of sheath 11: external diameter 38mm, thickness of slab 1mm, length 590mm, the cornerwise length 6(major axis of diamond hole) * the 4(minor axis) mm).Opening is carried out in the bottom of sheath 11, compares across certain distance (95mm) with the bottom surface of metal-made container 10.The length of the expanded anode 13 of this situation is that the length of expansion negative electrode 12 multiply by the length after 0.86.
The top of expansion negative electrode 12 and the upper shoulder of metal-made container 10 are fixed as one by being welded to connect by 4 connection metal plates (size: 8mm * 12mm, thickness of slab 1mm), form as a whole section to the L font.The expansion bottom of negative electrode 12 and top are connected and fixed at 4 positions with the bottom of metal-made container 10 in the same manner.The two ends of expanded anode 13 and sheath 11 are fixed as one by being welded to connect by loop connecting metal sheet (size: external diameter 38mm, internal diameter 18mm, thickness of slab 1mm), and forming as a whole section is the コ font.
The connection metal plate of metal-made container 10, expansion negative electrode 12 and negative electrode is titanium system, and the connection metal plate of sheath 11, expanded anode 13 and anode uses with the material of titanium as base material electrodeposit iridium.
A mode of the method for recovering precious metals that relates to as present embodiment utilizes pump 21 to carry waste liquids from the Recycling of waste liquid groove 20 of accommodating the waste liquid that comprises gold, and the waste liquid of conveying flows into to the bottom from the top of sheath 11, is circulated to the bottom of metal-made container 10.The waste liquid of this circulation carries out electrolysis on one side from the bottom to the top adverse current on one side between negative electrode and anode.The waste liquid of this electrolysis is discharged from the waste liquor stream outlet 15 in insulativity lid 14 upper sheds on metal-made container 10 tops, returns to the Recycling of waste liquid groove by coiling strainer 22 and circulates.The liquor charging speed of this circulation is because as the species of metal ion in the waste liquid of object, electrolytic condition and difference carried out the electrolytic recovery process of gold at the electrodeposit liquid (gold concentration is 1.5g/L) that comprises gold from 500L, with the liquor charging speed enforcement of 10 ~ 20L/min.In addition, the electrolytic condition when reclaiming operation is with 0.1 ~ 0.2A/dm
2Current density carry out.Once reclaiming the required time of operation, is 12 ~ 18 hours under above-mentioned liquor charging speed, electrolytic condition.
Carrying out the gold recovery process from the electrodeposit liquid that comprises gold, for the precious metal recovery device 1 after the electrolysis, will comprise the expansion negative electrode 12 of separating out gold and unload with the strainer 22 that adheres to the bronze end at interior metal-made container 10.For the gold of separating out, use chloroazotic acid etc. as the solution that is used for refining.Titanium is insoluble to chloroazotic acid etc.Solution is injected in the metal-made container 10, in retrieving arrangement, can make the gold dissolving by stirring.In addition, also can put into solution tank and make the gold dissolving at interior metal-made container 10 comprising the expansion negative electrode 12 of separating out gold.The gold of separating out is easily dissolving in chloroazotic acid etc.
Using precious metal recovery device of the present invention to carry out from the electrodeposit waste liquid that comprises gold can obtaining satisfied result the process of aforementioned gold recovery.Specifically, can not produce fully since the gold that causes because of the current concentration to the negative electrode both ends unusually separate out the short circuit that causes.In addition, can make the thickness of precipitating metal is 0.5 ~ 3.0mm and separate out equably the aqua regia dissolution when easily carrying out the regenerant refining.Gold recovery from Recycling of waste liquid is 99.9%.
Claims (10)
1. precious metal recovery device, it has: metal-made container cylindraceous, it consists of electrolyzer; The insulativity lid, it can also can be pulled down by airtight aforementioned metal container made, has the waste liquor stream outlet; Sheath, the center that it runs through the aforementioned dielectric lid makes waste liquid flow into to the bottom from top; The expansion negative electrode of tubular, it is along the interior week configuration of aforementioned metal container made; And the expanded anode of tubular, its periphery along aforementioned sheath configures,
It is characterized in that,
The upper shoulder of the top of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed with the section font of falling L, the bottom of the bottom of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed, and the two ends of aforementioned expanded anode and aforementioned sheath are connected and fixed with section コ font.
2. precious metal recovery device according to claim 1 is characterized in that,
The length of aforementioned expanded anode is that the length of aforementioned expansion negative electrode multiply by the length after 0.5 ~ 0.95.
3. precious metal recovery device according to claim 1 is characterized in that,
Aforementioned metal container made and aforementioned expansion negative electrode consist of by a kind of in titanium, tantalum, niobium, zirconium and the hafnium or more than or equal to two kinds metal or alloy.
4. precious metal recovery device according to claim 1 is characterized in that,
The central part of aforementioned expansion negative electrode is the shape to the bulging of aforementioned expanded anode side.
5. precious metal recovery device according to claim 1 is characterized in that,
Aforementioned sheath and aforementioned expanded anode, its surface is made of metal, alloy or the oxide compound of platinum family at least.
6. a method for recovering precious metals, in the method preparation:
Sheath, its run through be arranged on the cylindrical metal container made can airtight and removable insulativity lid the center, this cylindrical metal container made consists of electrolyzer;
The expansion negative electrode, it is along metal-made container and interior week configuration thereof;
The expanded anode of tubular, its periphery along sheath configures,
It comprises following operation:
The liquor charging operation in this operation, is carried waste liquid from the Recycling of waste liquid groove of accommodating the waste liquid that comprises precious metal;
Flow into operation, in this operation, the waste liquid of conveying is flowed in aforementioned sheath from top to the bottom;
Electrowinning process, in this operation, the waste liquid that makes this inflow between aforementioned expansion negative electrode and aforementioned sheath on one side from the bottom to the top adverse current, Yi Bian carry out electrolysis; And
Circulating process in this operation, makes aforementioned waste liquid discharge from the waste liquor stream outlet, returns to aforementioned Recycling of waste liquid groove by strainer, and make by the waste liquid of electrolysis and circulate,
It is characterized in that,
The upper shoulder of the top of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed with the section font of falling L, the bottom of the bottom of aforementioned expansion negative electrode and aforementioned metal container made is connected and fixed, and the two ends of aforementioned expanded anode and aforementioned sheath are connected and fixed with section コ font.
7. method for recovering precious metals according to claim 6 is characterized in that,
The length of aforementioned expanded anode is that the length of aforementioned expansion negative electrode multiply by the length after 0.5 ~ 0.95.
8. method for recovering precious metals according to claim 6 is characterized in that,
Aforementioned metal container made and aforementioned expansion negative electrode consist of by a kind of in titanium, tantalum, niobium, zirconium and the hafnium or more than or equal to two kinds metal or alloy.
9. method for recovering precious metals according to claim 6 is characterized in that,
The central part of aforementioned expansion negative electrode is the shape to the bulging of aforementioned expanded anode side.
10. method for recovering precious metals according to claim 6 is characterized in that,
Aforementioned sheath and aforementioned expanded anode, its surface is made of metal, alloy or the oxide compound of platinum family at least.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-154404 | 2010-07-07 | ||
| JP2010154404A JP4666418B1 (en) | 2010-07-07 | 2010-07-07 | Precious metal recovery device and recovery method |
| PCT/JP2011/065495 WO2012005302A1 (en) | 2010-07-07 | 2011-07-06 | Precious metal recovery device and recovery method |
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| Publication Number | Publication Date |
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| CN102959134A true CN102959134A (en) | 2013-03-06 |
| CN102959134B CN102959134B (en) | 2014-03-05 |
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| CN201180030077.8A Active CN102959134B (en) | 2010-07-07 | 2011-07-06 | Precious metal recovery device and recovery method |
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| EP (1) | EP2592177B1 (en) |
| JP (1) | JP4666418B1 (en) |
| KR (1) | KR101307713B1 (en) |
| CN (1) | CN102959134B (en) |
| TW (1) | TWI400360B (en) |
| WO (1) | WO2012005302A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103361673A (en) * | 2013-07-24 | 2013-10-23 | 励福实业（江门）贵金属有限公司 | Titanium cylinder electrolysis machine |
| CN105849318A (en) * | 2013-12-23 | 2016-08-10 | 韩国地质资源研究院 | Metal recovery reactor and metal recovery system |
| CN106011945A (en) * | 2016-06-16 | 2016-10-12 | 东莞市盛德电解设备科技有限公司 | Electrolytic gold extraction machine |
| CN106122119A (en) * | 2016-06-21 | 2016-11-16 | 攀钢集团钛业有限责任公司 | A kind of streamline electrolysis bath high-temperature molten salt Pneumatic conveyer |
| CN107034485A (en) * | 2017-06-14 | 2017-08-11 | 北京川金环保科技有限公司 | A kind of novel environment friendly quick separating reclaims precious metal ion device product |
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- 2011-07-06 KR KR1020127033089A patent/KR101307713B1/en active IP Right Grant
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103361673A (en) * | 2013-07-24 | 2013-10-23 | 励福实业（江门）贵金属有限公司 | Titanium cylinder electrolysis machine |
| CN103361673B (en) * | 2013-07-24 | 2016-02-17 | 励福(江门)环保科技股份有限公司 | Titanium cylinder electrolysis machine |
| CN105849318A (en) * | 2013-12-23 | 2016-08-10 | 韩国地质资源研究院 | Metal recovery reactor and metal recovery system |
| CN106011945A (en) * | 2016-06-16 | 2016-10-12 | 东莞市盛德电解设备科技有限公司 | Electrolytic gold extraction machine |
| CN106122119A (en) * | 2016-06-21 | 2016-11-16 | 攀钢集团钛业有限责任公司 | A kind of streamline electrolysis bath high-temperature molten salt Pneumatic conveyer |
| CN106122119B (en) * | 2016-06-21 | 2018-05-18 | 攀钢集团钛业有限责任公司 | A kind of assembly line electrolytic cell high-temperature molten salt Pneumatic conveyer |
| CN107034485A (en) * | 2017-06-14 | 2017-08-11 | 北京川金环保科技有限公司 | A kind of novel environment friendly quick separating reclaims precious metal ion device product |
| CN107034485B (en) * | 2017-06-14 | 2019-04-05 | 张镇 | A kind of environmental protection quick separating recycling precious metal ion device product |
| CN108914165A (en) * | 2018-08-27 | 2018-11-30 | 浙江科菲科技股份有限公司 | A kind of novel powder electrolysis unit |
| CN108914165B (en) * | 2018-08-27 | 2023-11-21 | 浙江科菲科技股份有限公司 | Novel powder electrolysis device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2592177B1 (en) | 2017-08-30 |
| WO2012005302A1 (en) | 2012-01-12 |
| JP4666418B1 (en) | 2011-04-06 |
| EP2592177A1 (en) | 2013-05-15 |
| TW201211318A (en) | 2012-03-16 |
| CN102959134B (en) | 2014-03-05 |
| TWI400360B (en) | 2013-07-01 |
| EP2592177A4 (en) | 2016-08-31 |
| JP2012017491A (en) | 2012-01-26 |
| KR101307713B1 (en) | 2013-09-11 |
| KR20130016378A (en) | 2013-02-14 |
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