Method for cleaning recycled iron in wet-process zinc smelting technology

A technology for zinc hydrometallurgy and iron recovery, applied in the direction of ferric sulfate, nanotechnology, etc., can solve the problems of affecting recovery and easy access to jarosite, etc.

Inactive Publication Date: 2019-07-05
SOUTHWEAT UNIV OF SCI & TECH
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The zinc sulfate solution of zinc hydrometallurgy often contains a small amount of indium sulfate and silver sulfate. During the alum sinking process, these precious metals are easy to enter the jarosite, affecting its recovery.

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
  • Method for cleaning recycled iron in wet-process zinc smelting technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] A method for cleaning and recovering iron in a zinc hydrometallurgy process of the present invention, comprising:

[0023] In the iron-containing zinc sulfate solution, add complexing agent, chelating agent, jarosite seed crystals, ammonium carbonate and green neutralizer to sink vitriol, liquid-solid separation to obtain jarosite precipitation and zinc sulfate solution, jarosite precipitation through fast Burn to get nano iron sulfate. The raw material formula of sinking alum is shown in Table 1.

[0024]

[0025] In Example 1-Example 12 of the present invention, the mass content of the valuable metal zinc in the jarosite slag is less than 0.5%, and the content of indium and silver is less than 5g / t.

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

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention aims at providing a method for cleaning recycled iron in a wet-process zinc smelting technology. The method is characterized in that a complexing agent, a chelating agent, an ammonioiarosite crystal, ammonium carbonate and a green neutralizer are added in an iron-containing zinc sulfate solution for vanadium precipitating, liquid-solid separation is conducted to obtain an ammonioiarosite precipitate and a zinc sulfate solution, and the ammonioiarosite precipitate is quickly sintered to obtain nanometer ferric sulfate. By means of the method, the problem occurring when valuable metal enters iron vanadium slags can be solved, and clean iron vanadium slags can be obtained.

Description

technical field [0001] The invention relates to a method for cleaning and recovering iron in a zinc hydrometallurgy process, in particular to a jarosite iron removal method in a zinc hydrometallurgy solution. Background technique [0002] The zinc hydrometallurgy process mainly includes five main processes of zinc sulfide concentrate roasting, leaching, purification, electrolysis, and melting and casting. Among them, the leaching process is the core process of hydrometallurgy and a key process that affects the production capacity and recovery rate indicators of the hydrometallurgy process. For decades, a variety of processes have been maturely applied. The zinc roasting ore hot acid leaching method was developed in the late 1960s with the successful development of various iron removal methods. Since hot acid leaching can dissolve zinc ferrite, iron that enters the solution can be effectively separated from the solution by jarosite method, goethite method and hematite method...

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): C01G49/14B82Y40/00
CPCB82Y40/00C01G49/14
Inventor 谭宏斌马小玲侯小强
Owner SOUTHWEAT UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap