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Method for extracting metal solvent

A solvent and metal technology, applied in the field of solvent extraction, can solve problems such as the reduction of extraction capacity, and achieve the effect of improved extraction capacity and great effect

Inactive Publication Date: 2006-01-04
JX NIPPON MINING & METALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] Therefore, we realized that in winter when the temperature drops, the extraction capacity decreases compared with summer, and we wanted to find a way to maintain a constant extraction capacity throughout the year through this countermeasure.

Method used

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  • Method for extracting metal solvent
  • Method for extracting metal solvent

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Embodiment

[0044] Follow the figure 1 , to illustrate specific examples.

[0045] use figure 1 The device shown in , heats the liquid before extracting gold through a heat exchanger, so that its temperature is 26-39°C.

[0046] The results are shown in Table 1. In the mixer-settler, the temperature of the DBC after gold extraction in the liquid to be treated was raised to 26 to 30°C.

[0047] As a result, as shown in Table 1, the extraction amount of gold extracted by DBC was 47 to 51 g / L, and the phase separation property was ensured and the operation was still possible.

[0048] Additionally, according to figure 2 It can be seen that when the temperature of DBC is above 25°C, the optimum gold extraction amount can be guaranteed.

[0049] The temperature of the extracted DBC is measured at T1. For the amount of steam, the temperature T2 of the liquid to be treated is sensed at the outlet of the heat exchanger, and the amount of steam in the heat exchanger is adjusted to achieve a c...

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Abstract

The invention provides a method for extracting metal solvent which increases an extracted amount throughout a year and keeps the extracted amount. The method keeps a temperature of a DBC solvent at 25 degree or higher, and improves a phase splitting property of a solution and the solvent to enhance the extraction capability.

Description

technical field [0001] The present invention relates to a solvent extraction method for gold. [0002] Especially in winter or in low-temperature areas, when the temperature of the solvent is lowered, it is difficult to extract metals. Background technique [0003] The extraction of gold is continuously operated by using a mixer-settler because of its fast reaction. In the mixer-settler, the aqueous solution phase and the solvent phase are separated, and dibutyl carbitol (hereinafter referred to as DBC) after gold extraction is recovered. The DBC after gold extraction is sent to the DBC storage tank before the gold extraction after the gold is reduced and separated in the gold reduction process, and then sent to the mixing settler by a quantitative pump for the gold extraction operation. [0004] DBC is equivalent to Class 4, Class 3 Petroleum, and is currently used at room temperature. [0005] For this reason, the temperature of the DBC supplied to the gold extraction f...

Claims

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Application Information

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IPC IPC(8): C22B3/26C22B11/00
CPCY02P10/20C22B7/006C22B11/04C22B3/302
Inventor 波多野和浩藤井孝悦斋藤胜美
Owner JX NIPPON MINING & METALS CO LTD
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