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Copper recovery apparatus and copper recovery method

A recovery device and technology of copper hydroxide, applied in separation methods, separation devices, chemical instruments and methods, etc., can solve the problems of a lot of waste, low copper recovery efficiency, low copper purity, etc.

Inactive Publication Date: 2012-09-19
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the existing method, since the recovered copper precipitate / polymer aggregate itself contains a large amount of polymer, there is a problem that the copper purity per unit volume of the aggregate is low and the recovery efficiency of copper is low. point
In addition, since the amount of sludge (residue) remaining after separating copper from the aggregate is large, and the sludge is finally discarded, there is a problem that the amount of waste is large

Method used

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  • Copper recovery apparatus and copper recovery method
  • Copper recovery apparatus and copper recovery method
  • Copper recovery apparatus and copper recovery method

Examples

Experimental program
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Effect test

no. 3 approach

[0099] refer to Image 6 The 3rd copper recovery apparatus 1B used for the precoating method is demonstrated. In addition, this embodiment omits the description of the part which overlaps with the above-mentioned embodiment.

[0100] In the copper recovery device 1B of the third embodiment, the cleaning water supply line L10 and the stripping water supply line L11 , which are two lines for supplying tap water, are respectively connected to the upper space 31 of the solid-liquid separator 3B. The cleaning water supply line L10 is connected to the upper space 31 of the solid-liquid separator 3B, supplies tap water to the upper space 31 , and removes ionic components in the copper compound contained in the deposit layer on the filter 33 . By introducing abundant tap water into the upper space 31 of the solid-liquid separator through the cleaning water supply line L10, cationic components (Na ions, Ca ions, Mg ions, etc.) contained in the precoat layer can be effectively removed....

Embodiment 1

[0119] made as figure 1 Apparatus 1 shown roughly. Water to be treated containing copper is supplied to the precipitation tank 2, and an aqueous sodium hydroxide solution (indicated as NaOH in the figure) is added to the precipitation tank to make it alkaline and copper hydroxide is deposited. In addition, the filter aid is sent from the filter aid tank 5 to the mixing tank 6, and is mixed with a part of the reused treated water to prepare a filter aid slurry. First, the filter aid slurry is sent to the upper space 31 of the solid-liquid separation device 3 to form a filter aid film on the filter 33 . Thereafter, the liquid to be treated obtained by precipitating copper is supplied under pressure to the solid-liquid separation device 3 , and solid-liquid separation (filtration) is performed by passing through a membrane of a filter aid formed in advance. The filtrate is a weakly alkaline treatment liquid from which copper has been removed, and it can be drained through a neu...

Embodiment 2

[0123] Using the same apparatus as in Example 1, except that the filter aid B was used instead of the filter aid A, the test was carried out in the same manner. The recovery rate of copper is above 99%. Compared with Example 1, the flow rate of the solid-liquid separation device became half, but still operated without problems.

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Abstract

According to one embodiment, a copper recovery apparatus includes a precipitation tank configured to make a drainage containing copper ions be alkalinity and precipitate copper hydroxide grains in water, a filter aid supplier for supplying an aid composed of magnetic particles or condensed matters and having an average diameter of 0.5 [mu]m to 20 [mu]m, a mixing tank configured to mix the filter aid with a water to produce a suspension, a solid-liquid separator(3) provided with a filter (33) of which the interior is divided into an upper space and a lower space, a suspension supplying line(L7,L2) configured to supply the suspension to the upper space of the separator from the precipitation tank and form a pre-coating layer composed of the aid on the filter, a processed water supplying lines (L2) making the processed water containing hydrogen copper oxide particles pass through the pre-coating layer and the filter via the separation tank and the solid-liquid separator to thereby capture the hydrogen copper oxide particles on the pre-coating layer and supply filtering liquid to the lower space; a peeling water supplying lines (L31,L11) for supplying a peeling water used for peeling the pre-coating layer from the filter to the upper space of the solid-liquid separator; a separation tank (4) configured to receive the detached matter of the pre-coating layer discharged together with the detaching water from the separator to magnetically separate copper hydroxide grains and filter aid, a copper recovery line (L8) configure to discharge and recover the detaching water containing the hydrogen copper oxide particles from the separation tank, and an aid returning line (L5) configured to return the separated filter aid to the filter aid supplier from the separation tank.

Description

[0001] This application is based on and claims priority from Japanese Priority Patent Application No. 2011-057130 filed on March 15, 2011, the entire contents of which are incorporated herein. technical field [0002] The embodiments described here relate to a copper recovery device and a copper recovery method for recovering copper present in water. Background technique [0003] Recently, effective use of water resources has been sought due to industrial development and population increase. Therefore, reuse of waste water such as industrial waste water is important. The reuse of wastewater requires water purification, that is, the need to separate other substances from the water. As a method for separating other substances from water, there are various methods such as a membrane separation method, a centrifugal separation method, an activated carbon adsorption method, an ozone treatment method, and a method of removing floating substances by coagulation. By using these me...

Claims

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Application Information

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IPC IPC(8): C02F1/62C02F1/52
CPCC02F1/66Y10S210/912C02F2101/20B03C1/02B03C1/01C02F1/52C02F1/001C02F1/58B01D37/02B03C1/32B03C1/30C02F1/00B03C2201/18C22B15/0089
Inventor 深谷太郎堤剑治山崎厚山梨伊知郎野口博史菊池靖崇关秀司
Owner KK TOSHIBA
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