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Silver recovery device for silver-containing waste liquor

A technology for recovering devices and waste liquids, which is applied in photographic technology, instruments, and photographic auxiliary processes, etc. It can solve the problems of low electrolysis efficiency, cumbersome operation, scattered devices, etc., and achieve high electrolysis efficiency, increased surface area, and increased fluidity.

Active Publication Date: 2012-07-11
ERDOS ANXINTAI ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems in the prior art from the reaction to the electrolysis of silver, the devices are scattered, the operation is complicated, the phenomenon of concentration polarization is obvious, the electrolysis efficiency is low, and the silver production rate is low, and then provide a A kind of silver recovery device of silver-containing waste liquid

Method used

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  • Silver recovery device for silver-containing waste liquor
  • Silver recovery device for silver-containing waste liquor
  • Silver recovery device for silver-containing waste liquor

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specific Embodiment approach 1

[0007] Specific implementation mode one: combine figure 1 and figure 2 To illustrate this embodiment, the silver recovery device for silver-containing waste liquid described in this embodiment includes a reaction cell 1, an electrolytic cell 2, a waste liquid pool 3, a drain pipe assembly 4, a catheter 5, an on-off valve 6, a first Sewage valve 10-1, second blowdown valve 10-2, at least one first electric agitator 8 and at least two second electric agitators 9, the reaction pool 1, electrolytic cell 2 and waste liquid pool 3 are integrated The electrolytic cell 2 is arranged adjacent to the waste liquid pool 3, the upper end surface of the waste liquid pool 3 is provided with a reaction pool 1, the upper end face of the reaction pool 1 is provided with a liquid inlet 1-1, and the reaction pool 1 is provided with at least A first electric agitator 8, one end of the drain pipe assembly 4 communicates with the reaction pool 1, and the other end of the drain pipe assembly 4 comm...

specific Embodiment approach 2

[0008] Specific implementation mode two: combination figure 2 To describe this embodiment, the distance H between two adjacent first pole plates 2 - 1 and second pole plates 2 - 2 in this embodiment is 1 cm to 2 cm. In this way, the silver quality obtained when the distance between the pole plates is within the range of 1cm to 2cm is good, and the silver yield is high. The silver production rate of this embodiment can be increased by more than 20%, and the pole plate area can reach 0.91dm 2 , the current density can reach 0.1A / dm 2 , the larger the spacing, the lower the output, and the smaller the spacing, the silver is easily oxidized, and the quality of the silver obtained is not high. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0009] Specific implementation mode three: combination figure 1 The present embodiment will be described. The voltage of the DC power supply of the electrolytic cell 2 according to the present embodiment is 0.9V to 1.1V. If set in this way, the electrolytic voltage is in the range of 0.9V to 1.1V, the quality of the obtained silver is good, and the silver yield is high, and the silver yield can be increased by more than 20%. If the voltage is too high, the silver will easily turn black. If the voltage is too low, The efficiency of silver production is reduced. Others are the same as in the first or second embodiment.

[0010] Specific implementation mode four: combination figure 1 To illustrate this embodiment, the reaction cell 1 , electrolytic cell 2 and waste liquid cell 3 described in this embodiment are all made of organic glass. With such arrangement, the anti-corrosion performance is good, the manufacturing cost is low, and the use and installation are convenient. O...

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Abstract

The invention provides a silver recovery device for silver-containing waste liquor, relates to a silver recovery device, and specifically relates to a silver recovery device for laboratory and industrial silver-containing waste liquor. The silver recovery device is used for solving the problems of the prior art during the whole process from reaction to silver electrolysis that devices are scattered, the operation is complecated, the concentration polarization phenomenon is obvious, the electrolysis efficiency is low and the silver yield is low. The silver recovery device comprises a reaction tank, an electrolytic tank, a waste liquor tank, a liquid-draining pipe component, a liquid guide pipe, a switch valve, a first blowoff valve, a second blowoff valve, at least one first electric stirrer and at least two second electric stirrers, wherein the reaction tank, the electrolytic tank and the waste liquor tank are integrally manufactured; the electrolytic tank and the waste liquor tank are adjacent to each other; the reaction tank is arranged on the upper end face of the waste liquor tank; a liquid inlet is arranged on the upper end face of the reaction tank; the at least one first electric stirrer is arranged on the reaction tank; an anode of the electrolytic tank is composed of a plurality of first polar plates arranged in parallel; and a cathode of the electrolytic tank is composed of a plurality of second polar plates arranged in parallel. The silver recovery device is used for recovering the silver from the silver-containing waste liquor.

Description

technical field [0001] The invention relates to a silver recovery device, in particular to a silver recovery device used in laboratories and industrial silver-containing waste liquids. Background technique [0002] At present, the recovery of metal silver from the waste shadow liquid in the photo industry, the COD analysis waste liquid in the laboratory and other silver-containing waste liquids, some adopt the method of generating sulfide precipitation and various methods derived on the basis of the method. An improved method, but there is an insurmountable shortcoming in the above method, that is, the generated sulfide precipitate will release a large amount of SO when burning 2 Gas, causing serious pollution to the environment, and too much inclusion in the sediment, hinders the aggregation and agglomeration of silver during burning, often requires secondary separation and secondary burning, which not only wastes energy, but also easily causes silver loss. There are also ...

Claims

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Application Information

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IPC IPC(8): C25C1/20C25C7/00
Inventor 马军宋阳秦雯
Owner ERDOS ANXINTAI ENVIRONMENTAL PROTECTION TECH
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