JPS5891035A - Metallic ion extracting reagent and extracting method - Google Patents

Abstract

PURPOSE:To separate ions of Cu, Ag, Au, a Pt group metal or Hg contained in an aqueous soln. from other various metallic ions by extraction at a high extraction rate by bringing the soln. into contact with a slightly water-soluble phase contg. chlorobutenyl-tertiary-amine in an acidic range. CONSTITUTION:An aqueous soln. contg. ions of Cu, Ag, Au or a Pt group metal and/or Hg is brought into contact with a slightly water-soluble phase contg. chlorobutenylamine at 2-6pH to separate said ions from other various metallic ions by extraction. The concn. of ions of Cu or the like in the aqueous soln. can be reduced to <= about 1ppm. Said chlorobutenylamine is represented by formulaI(where Y is CH3CCl=CHCH2- and/or CH3CCH=CClCH2-, and each of R1 and R2 is 1-20 C alkyl, alkenyl, alkoxyalkyl, aralkyl, phenyl or cycloalkyl which may have a side chain, or chlorobutenyl prescribed by Y).

Description

[Detailed Description of the Invention] σ) The present invention provides for the production of W, silver, gold, platinum group, etc. from an aqueous solution.
Mercury ion! Concerning extraction and separation methods.

More specifically, by bringing the metal ion into contact with a poorly water-soluble organic phase containing a tertiary amine selected for Shinryu, He is knowledgeable about methods of extraction into organic phases.

Conventionally, a method of extracting and separating various duck ions from an aqueous solution into an organic phase using a tertiary amine has been known, but the extraction ability and water bathability of the amine σ are limited.

RILLs such as gold metal, ion θ, mutual separation, etc. were not always in a satisfactory state with respect to optical ♀.

Akira Fueni discloses a method for extracting gold ions σ) with a high extraction ability even from low concentration solutions using a new σ-no-Sankyo amine. 1) Steel, silver, gold, platinum group and mercury ions σ) can be separated and extracted from other famous metal ions. Moreover, the concentration of these ions in an aqueous solution can be reduced to less than 1 ppm by extraction.

The present invention is characterized in that a specific tertiary amine is used as an extraction agent. 1] Chlorobutenylamine shown by the formula mK (here, Y is 0H300, 0HOH2- and/or 0
H3C old-0010H2- group, R1 and R2 are the same or different alkyl groups having 1 to 20 carbon atoms,
Alkenyl groups, alkoxyalkyl groups, phenyl groups with or without side chain chains, and cycloalkyl groups, and Y
It is a chlorobutenyl group defined in (1) or is used because of its affinity with a specific metal ion.

In the formula [1), it is essential that at least one chlorozotenyl M5 & engineered molecule is present in Y, and furthermore, l
(l, F(2) may also be Y.

7.1. The chlorobutenyl group also has a single effect, and a mixture of the seven-layered sigma amine θ, or a mixture of both types of structures may be present in one molecule. 1(
1 (2 can be selected from a wide range of hydrocarbon residues as well as alkoxy groups, especially R1 and R2
It is desirable that at least one of the carbon atoms is in the range of 4 to 18 carbon atoms.

The extraction operation should be carried out at a suitable pH''Qh. P.H.
If it is too heavy, the metal compound may precipitate or other metal ions may be mixed in as contaminants. -! On the other hand, if it is too low, the ability to extract metal ions will decrease. In particular, when separation from other suppressive metal ions is required, Pl-1σ) is selected.
It is an expense. Once upon a time, the most suitable - ] differs depending on the thread, and it is generally not 1, or generally &'! p) (can be selected in the range from 2 to 8.) - The extracted metal ions must be completely recovered to the aqueous phase by contacting with a water bath solution with a pH below 2. I can do it.

There are no particular restrictions on the degree of extraction. It may be within a range where water can contact the liquid phase and the amorphous phase as a liquid, and within which metal ions can be exposed. - For rice, the temperature range will be from room temperature to 80°C.

The extractant amine can be used alone as a 4 m homogeneous phase, but it can be diluted with hydrocarbons, organic alcohols, ethers, and other solvents as required.The concentration of the amine is 1 However, if metal ions exist as complex ions, the application of this process may not be effective.The concentration of metal ions in the water bath liquid can be applied down to the ppm order. Yes, the upper limit can be applied if the golden cry ion exists as a complete resolution.

The method of the present invention can be widely used for efficiently recovering Marikin M from an aqueous solution or for separating and recovering a specific metal from a mixed solution of various types of bitter ions. Examples include the recovery of O) special metals from plating solutions and etchings, the extraction of golden parrots from ore leaching fluids, and the removal of harmful metals from industrial wastewater and mining wastewater.

Examples will be described below, but the scope of the present invention is not limited by these embodiments.

Example 1 A 100% solution of palladium chloride in a 1'moJ water bath and a 10% octyl solution of octyl-2chlorodetenyl-methylamine were placed in an IQ7y separating funnel and the pH was adjusted at room temperature.
After adjusting the temperature to 4.5 with monic acid and shaking with IW for 10 minutes, the mixture was allowed to stand and the liquids were separated. When the palladium ions in the aqueous solution were separated, they were found to have decreased to 60 ppm.

Furthermore, the palladium in the aqueous solution was re-extracted with the same amount of solution and became 1 ppm or less.

Next, the above θ・organic phase and 100 mi″ of the acid-resistant water bath solution were
Shake and separate for 0 minutes (pt+=1.OKi'ltl
(adjustment). Analysis of palladium ions in the water bath solution revealed that they were collected in the water phase in a consistent manner. In addition, when octyl-6chlorobutenyl-methylamine is used, the content of σ) palladium ions in the raffinate aqueous solution is 70 ppm and 1 0%.
.

LOL Example 2 [J, 1+no7! Prepare common liquid,
Tris-2chlorobutenylamine σ) 20%) Performed in toluene bath solution? Extraction was performed in the same manner as 111 and 1. The extraction rate is shown in Table-1. As a result, it was found that copper, silver, gold, platinum, and mercury were particularly well extracted.

夾m? lJ3 Silver ion 0.1, mercury ion 0.05, silver ion 1
．． 0%, sodium ion 5.0%, calcium ion 1. O%'r water bath liquid 100 m/'rpH=3.
5 Thebenzyl-2chlorobutenyl-methylamine 20
As a result of extraction with d, the concentration of raffinate water ff + a.
It was 1,98%.

Patent applicant Denki Kagaku Kogyo Co., Ltd. (9) Procedural amendment (method) % formula % 1 Display of case 1982 Patent application No. 186924 April 2 Name of invention Metal ion extractant and its method Case of person making amendment Relationship with Patent Applicant Address: 1-4-1 Yurakucho, Chiyoda, Tokyo 100 March 60, 1982 (Delivery date) 5. Specification subject to amendment 6. Engraving of the description of the contents of the amendment (in the content) No change)

Claims (1)

[Claims] 1) an aqueous solution containing silver, gold, platinum group and/or mercury ions;
, the formula % formula % (in this X, Y is cH, cc is CHCH2- and/or)
j cH3COH: ec1cH2- group, R1 and R2 are the same or different argyl group, alkenyl group, alkoxyalkyl group, aralkyl group, phenyl base layer with or without 1tIllf-11, and 7 chloroalkyl group, as well as Y or O
A method for deriving gold metal ions by bringing them into contact with a water bathing phase containing a (robutenyl group). 2) Range 1, silver, cauldron, platinum group and/or water ion,
Oxygen, iron group, Burmese, navy blue, zinc, alkal Kanejima and/or alkal pot ion floating water f1: General, 1: Li-PH2~8σ) Chlorophdenyl added to formula 1 [1] in a specific range V contact with a water-soluble phase containing Ryomin,
An extraction and division method characterized by extracting baggage, bride, gold, 7° latina group, and mercury ions. 3) An extractant for silver, gold, platinum group and mercury ions, characterized by containing cloptenylamine represented by formula [1].