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Method for implementing copper-cobalt separation, enrichment and purification by using heavy metal adsorbing material

A technology for adsorbing materials and heavy metals, which can be used in chemical instruments and methods, other chemical processes, and the improvement of process efficiency, and can solve the problems of high cost and low removal efficiency of heavy metal ions.

Inactive Publication Date: 2013-11-06
工信华鑫科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current treatment methods for various types of heavy metal wastewater have the defects of low removal efficiency and high cost of heavy metal ions in wastewater.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0045]Pretreatment: Pretreatment: Under a 100-watt ultrasonic field, disperse the raw silica gel in 9mol / L hydrochloric acid solution, heat and reflux for 20 hours, wherein the mass ratio of the raw silica gel to the hydrochloric acid solution is 5:1; then filter and remove acid solution, the filter cake was washed to neutrality, and the activated silica gel was obtained after vacuum drying at 150°C;

[0046] Silica gel bonding reaction: add anhydrous xylene solution and silylating reagent to the reaction vessel, stir to dissolve the silylating reagent 3-diethylenetriaminopropyltrimethoxysilane in the anhydrous xylene solution to obtain the first solution, wherein the mass ratio of the silylating agent to the xylene solution is 4:1; add anhydrous DMF to the activated silica gel, stir and mix uniformly to obtain a second solution, wherein the mass ratio of the activated silica gel to DMF is 4: 1; The mass ratio of silylating reagent to activated silica gel is 2:1;

[0047] Add...

Embodiment 3

[0053] Pretreatment: Pretreatment: Under the ultrasonic field of 200 watts, disperse the raw silica gel in 11mol / L hydrochloric acid solution, heat and reflux for 30 hours, wherein, the mass ratio of raw silica gel to hydrochloric acid solution is 7:1; then filter and remove acid solution, the filter cake was washed to neutrality, and the activated silica gel was obtained after vacuum drying at 120°C;

[0054] Silica gel bonding reaction: add anhydrous xylene solution and silylating reagent to the reaction vessel, stir to dissolve the silylating reagent 3-ethylenediaminopropyltrimethoxysilane in the anhydrous xylene solution to obtain the first solution , wherein the mass ratio of the silylating agent to the xylene solution is 5:1; add anhydrous DMF to the activated silica gel, stir to mix evenly to obtain a second solution, wherein the mass ratio of the activated silica gel to DMF is 3:1 ; The mass ratio of silylating agent to activated silica gel is 1.5:1;

[0055] Add the ...

experiment example 2

[0100] In this experimental example, the heavy metal adsorption material prepared in Example 5 of the preparation method of the heavy metal adsorption material was used.

[0101] S1, respectively filling heavy metal adsorption materials into each adsorption column of the continuous adsorption exchange equipment; wherein, the continuous adsorption exchange equipment is composed of a first adsorption column and a second adsorption column connected in series;

[0102] S2, adjusting the pH of the solution to be treated containing copper ions and cobalt ions to 1.0 to obtain an acid dipping solution;

[0103] S3, injecting the acid leaching solution into the continuous adsorption exchange equipment after S1 operation;

[0104] S4, the continuous adsorption exchange equipment separates, enriches and purifies the acid leach solution at 40°C, specifically including: pumping the acid leach solution with a pH of 1.0 into the liquid inlet of the continuous adsorption exchange equipment; ...

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Abstract

The invention provides a method for implementing copper-cobalt separation, enrichment and purification by using a heavy metal adsorbing material, which comprises the following steps: S1. respectively filling a heavy metal adsorbing material into various adsorption columns of continuous adsorption exchange equipment, wherein the continuous adsorption exchange equipment is composed of a first adsorption column and a second adsorption column which are connected in series; S2. regulating the pH value of a solution to be treated containing copper ions and cobalt ions to 0.5-5.0 to obtain an acid leaching solution; S3. injecting the acid leaching solution into the continuous adsorption exchange equipment after the operation of S1; and S4. carrying out separation, enrichment and purification on the acid leaching solution by using the continuous adsorption exchange equipment. The experiment proves that the accurate control on the temperature and flow rate of the treatment solution can implement separation of copper ions and cobalt ions; and therefore, the method provided by the invention can be used for separating and recovering slight or trace amounts of copper and cobalt in the liquid.

Description

technical field [0001] The invention belongs to the technical field of heavy metal separation, and in particular relates to a method for realizing the separation, enrichment and purification of copper and cobalt through heavy metal adsorption materials. Background technique [0002] With the rapid development of the world economy and the continuous increase of population, the relative shortage of resources and weak environmental carrying capacity have become important bottlenecks in the development of the world. Building a resource-saving and environment-friendly society and promoting the construction of ecological civilization have become the topics of concern to all countries in the world today. [0003] At present, for various industrial wastewater, domestic sewage and nuclear industrial wastewater containing heavy metal ions, chemical precipitation method, redox method or ion exchange method are generally used to treat them, so as to reduce the content of heavy metals in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/22
CPCY02P10/20
Inventor 邱建宁徐纯理
Owner 工信华鑫科技有限公司
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