Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation and regeneration method of circulating copper salt dechlorinating agent

A dechlorination agent and copper salt technology, which is applied in the field of preparation and regeneration of circulating copper salt dechlorination agent, can solve the problems of low dechlorination efficiency, insufficient self-production rate of copper slag and copper salt, etc., and achieve good dechlorination effect , High dechlorination efficiency, guaranteed purity

Inactive Publication Date: 2020-02-04
GREENNOVO ENVIRONMENTAL TECH CO LTD
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to propose a preparation method for the defects and deficiencies of the existing dechlorination technology for chlorine-containing zinc sulfate solution, the low dechlorination efficiency of the copper slag dechlorination method, and the insufficient self-production rate of copper slag and copper salt. A method for regenerating the copper salt dechlorination agent, which can infinitely recycle copper metal, the main component of the copper salt dechlorination agent, to achieve the advantages of low production cost, simple operation, recycle of dechlorination copper salt, good dechlorination effect, etc. To solve the deficiencies of the existing technology

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation and regeneration method of circulating copper salt dechlorinating agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for preparing and regenerating a circulating copper salt dechlorination agent, comprising the steps of:

[0025] 1) Preparation: Dissolve 6 tons of copper slag containing 50% copper in 45m 3 In the industrial brine containing 90g / L chlorine, add sulfuric acid to adjust the pH value to 2.5, then add 9.4 tons of copper sulfate pentahydrate, control the reaction temperature to 60°C, and control the pH value to 3.0 during the process. After stirring for 1.5 hours, filter to produce low-chlorine brine and 9 tons of cuprous chloride slag containing 60% copper, and low-chlorine brine are sent to the industrial brine treatment system;

[0026] 2) Alkali washing: use 10m each time 3Industrial water or step 3) rinsing water to slurry the cuprous chloride slag in step 1) or step 6) regenerated cuprous chloride slag, control the liquid-solid ratio to 3:1, the temperature is 50°C, and adjust the pH value with sodium hydroxide 9.0, after stirring for 40 minutes, filter, an...

Embodiment 2

[0036] A method for preparing and regenerating a circulating copper salt dechlorination agent, comprising the steps of:

[0037] 1) Preparation: Dissolve 6 tons of copper slag containing 50% copper in 45m 3 In the industrial brine containing 90g / L chlorine, add sulfuric acid to adjust the pH value to 3.0, then add 9.4 tons of copper sulfate pentahydrate, control the reaction temperature to 70°C, control the pH value to 3.2 during the process, stir for 1.5 hours and then filter to produce low-chlorine brine and 9 tons of cuprous chloride slag containing 60% copper, and low-chlorine brine are sent to the industrial brine treatment system;

[0038] 2) Alkali washing: use 15m each time 3 Industrial water or step 3) rinsing water slurry the cuprous chloride slag of step 1) or step 6) regenerated cuprous chloride slag, control the liquid-solid ratio to 4:1, the temperature is 60°C, and adjust the pH value with sodium hydroxide 10.0, after stirring for 50 minutes, filter, and produ...

Embodiment 3

[0048] A method for preparing and regenerating a circulating copper salt dechlorination agent, comprising the steps of:

[0049] 1) Preparation: Dissolve 6 tons of copper slag containing 50% copper in 45m 3 In the industrial brine containing 90g / L chlorine, add sulfuric acid to adjust the pH value to 3.5, then add 9.4 tons of copper sulfate pentahydrate, control the reaction temperature to 75°C, control the pH value to 3.5 during the process, and filter after stirring for 1.5 hours to produce low-chlorine brine and 9 tons of cuprous chloride slag containing 60% copper, and low-chlorine brine are sent to the industrial brine treatment system;

[0050] 2) Alkali washing: use 20m each time 3 Industrial water or step 3) rinsing water slurry the cuprous chloride slag of step 1) or step 6) regenerated cuprous chloride slag, control the liquid-solid ratio to 6:1, the temperature is 70°C, and adjust the pH value with sodium hydroxide 11.0, stirred for 60 minutes and then filtered to...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of wet smelting, and specifically relates to a preparation and regeneration method of a circulating copper salt dechlorinating agent. The preparation and regeneration method comprises the following steps: 1) preparation; 2) alkali washing; 3) rinsing; 4) dechlorination; 5) acid pickling; 6) regeneration; 7) copper deposition; 8) oxidation; and 9) leaching. The invention aims to provide the method for preparing the regenerated copper salt dechlorinating agent to solve the problems of process defects and deficiencies of an existing dechlorination technology of a chlorine-containing zinc sulfate solution, low dechlorination efficiency of a copper slag dechlorination method, insufficient self-yield of copper slag and copper salt and the like. The method can recycle the main component copper metal of the copper salt dechlorinating agent infinitely, and achieves the advantages of low production cost, relatively simple operation, recycling of the dechlorinated copper salt, good dechlorination effect and the like, so as to solve the deficiencies in the prior art.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a method for preparing and regenerating a circulating copper salt dechlorination agent. Background technique [0002] Today in the 21st century, due to the continuous expansion of zinc demand and the gradual decline of zinc resources, smelting enterprises have less and less selectivity for zinc concentrate raw materials, and various complex raw materials have no choice but to be put into the zinc smelting system , Zinc-containing fumes are usually also used as raw materials for hydrometallurgy of zinc. Chlorine in the zinc-containing fume basically all enters the zinc sulfate solution during leaching, and the chloride ion in the zinc sulfate solution is generally 1.0-15g / L, so some enterprises first carry out alkali washing and multi-hearth furnace roasting on the high-chlorine fume. The sulfuric acid leaching is carried out after the pretreatment of the method. The chlo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B15/00
CPCC22B7/007C22B15/0071C22B15/0091Y02P10/20
Inventor 马黎阳李建福李春林李云海张云学魏希勇
Owner GREENNOVO ENVIRONMENTAL TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com