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Method for extracting rhenium jointly with high-rhenium-arsenic filter cake and copper-containing waste liquid

A filter cake and waste liquid technology, applied in the field of joint disposal of high rhenium arsenic filter cake and copper-containing waste liquid and extraction of rhenium from high rhenium arsenic filter cake, can solve the problems of complex process, difficult stripping, long process and so on , to achieve the effect of simplifying the process flow, eliminating purification steps, and facilitating crystallization

Active Publication Date: 2021-01-15
JINLONG COPPER +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the above three methods, the first two have complex process flow, the amine extractant used is volatile, highly toxic, and difficult to strip, and there is also the problem of environmental pollution from the extraction waste liquid; the third method has a long process and consumes copper. Powder, oxygen, high operating costs

Method used

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  • Method for extracting rhenium jointly with high-rhenium-arsenic filter cake and copper-containing waste liquid
  • Method for extracting rhenium jointly with high-rhenium-arsenic filter cake and copper-containing waste liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] a), Purify the smelting flue gas containing arsenic and rhenium in the flue gas purification system, set the cleaning cycle of the filter layer in the purification system to 10 days, and use the diacetyl arsenic filter cake obtained by diacetyl oxime spectrophotometry Measure the content of rhenium in the gained arsenic filter cake to be 1.16%;

[0028] b) Add the arsenic filter cake containing 1.16% rhenium and the sulfuric acid leaching solution of copper anode slime containing 1% copper obtained in step a) into the leaching tank at a liquid-solid ratio of 3:1, and mix and leaching under normal pressure and 60°C After 2 hours, the obtained mixed leachate was subjected to solid-liquid separation to obtain leachate B1 and leach residue B2;

[0029] c) The leaching solution B1 adsorbs rhenium through the ion exchange resin to obtain the ion exchanged liquid C1. When the ion exchange resin is close to saturation, backwash and desorb the ion exchange resin with ammonia sol...

Embodiment 2～9

[0034] Embodiment 2~9 are identical with embodiment 1 step, and process parameter is as shown in table 1:

[0035] From the data obtained in the above 9 examples, it can be known that the method for extracting rhenium in combination with the high-rhenium-arsenic filter cake and copper-containing waste liquid of the present invention, when the smelting flue gas continues to pass through the flue gas purification system, after setting the cleaning cycle of the filter layer, The fluctuation of rhenium content in the obtained high-rhenium-arsenic filter cake is very small, which provides convenience for determining the time required for subsequent control of each part of the technological process. The measured concentration of the recovered dilute sulfuric acid is about 20-30%. Returning to the leaching step for recycling can meet the requirements of the leaching process for the concentration of the leaching solvent; the calculated comprehensive recovery rate of rhenium can reach m...

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Abstract

The invention relates to a method capable of achieving joint treatment of a high-rhenium arsenic filter cake and a copper-containing waste liquid and capable of extracting rhenium from the high-rhenium arsenic filter cake. The method specifically comprises the following steps that a), the rhenium is enriched in an arsenic filter cake; b), the high-rhenium arsenic filter cake and the copper-containing waste liquid undergo mixing and leaching; c), ion exchange and desorption are carried out; and d), concentrating and crystallizing are carried out to produce an ammonium rhenate finished product.The content fluctuation range of the rhenium in the high-rhenium arsenic filter cake is reduced by setting the cleaning period of the filter layer in the purification process of the smelting flue gasin a purification system, the control of the extraction process time of the rhenium at the later stage is facilitated, and monitoring of the rhenium yield is also facilitated; the high-rhenium arsenicfilter cake and the copper-containing waste liquid are treated jointly, so that the cost investment for treating the high-rhenium arsenic filter cake and the copper-containing waste liquid separatelyin the aspects such as the raw materials, the equipment and the energy consumption is saved; the treatment process adopts normal-pressure leaching, so that the process cost is further reduced; and anammonia water solution is adopted as a desorption agent, the step of purifying the rhenium product is omitted, and the process flow is simplified.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metals, and in particular relates to a method for jointly disposing a high-rhenium-arsenic filter cake and copper-containing waste liquid and extracting rhenium from the high-rhenium-arsenic filter cake. Background technique [0002] Arsenic filter cake is a by-product of the flue gas purification process of non-ferrous metal smelting. Since it is a dangerous solid waste with high arsenic content, most enterprises entrust qualified units to handle it. The loss. At present, there are three main ways to extract rhenium from arsenic filter cake: one is pressurized oxygen leaching-sulfur dioxide reduction arsenic precipitation-extraction rhenium; the other is one-stage alkaline leaching, two-stage oxidation leaching-dearsenication-extraction and extraction of rhenium. The third is copper powder replacement-oxidation, sulfur dioxide reduction arsenic precipitation-ion exchange rhenium extraction. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B61/00C22B7/02C22B30/04C25C1/12
CPCC22B7/007C22B7/02C22B30/04C22B61/00C25C1/12Y02P10/20
Inventor 文燕郑国渠黄辉荣王文斌杨利群袁雪生邹贤
Owner JINLONG COPPER