Method for removing iron from iron-containing zinc sulfate solution

A zinc sulfate solution and iron-removal treatment technology is applied in the chemical and metallurgical fields to achieve the effects of improving iron-removing efficiency and equipment utilization rate, improving recovery rate and increasing enterprise economic benefits

Active Publication Date: 2014-08-27
CHINA ENFI ENGINEERING CORPORATION
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, an object of the present invention is to propose a kind of method that iron-containing zinc sulfate solution is carried out iron removal, and this method can effectively solve the production interruption that causes because scal...

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 removing iron from iron-containing zinc sulfate solution
  • Method for removing iron from iron-containing zinc sulfate solution
  • Method for removing iron from iron-containing zinc sulfate solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0050] Utilize the method that iron-containing zinc sulfate solution is carried out to the iron-containing zinc sulfate solution of the embodiment of the present invention to process:

[0051] Wherein, the iron-containing zinc sulfate solution is the solution after zinc smelting and indium precipitation.

[0052] at 1m 3 Vertical reactor and 3m 3 In a horizontal reactor, 1m 3 Add iron-containing zinc sulfate solution at a flow rate of / h, the solution contains 100g / L of zinc and 30g / L of iron (as Fe 2+ meter), the pH value is 3, and the reaction temperature is maintained at 185°C. The iron-precipitated solution is flashed, filtered and washed to obtain iron-containing products (precipitation) and iron-precipitated liquid (filtrate), and the iron-precipitated liquid is returned to the system for circulation use.

[0053] The iron oxide-containing product is determined to contain iron 60-68%, zinc <0.5%, and sulfur <0.8%, which can be sold as cement or iron ore or further pr...

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 discloses a method for removing iron from an iron-containing zinc sulfate solution. The method comprises the following steps: supplying the iron-containing zinc sulfate solution to a vertical reaction kettle, and introducing steam and oxygen into the vertical reaction kettle so as to perform primary iron removal treatment in the vertical reaction kettle to obtain first iron-removed slurry; supplying the first iron-removed slurry to a horizontal reaction kettle, and introducing steam and oxygen to the horizontal reaction kettle so as to perform secondary iron removal treatment in the horizontal reaction kettle to obtain second iron-removed slurry. According to the method of removing iron from the iron-containing zinc sulfate solution disclosed by the embodiment of the invention, the vertical reaction kettle and the horizontal reaction kettle are combined for use so as to effectively solve the production interruption caused by the problems of scaling in the kettles in the iron removal process and ensure the continuous and stable operation of production, thereby significantly improving the iron removal efficiency and the equipment utilization rate.

Description

technical field [0001] The invention belongs to the fields of chemical industry and metallurgy, in particular, the invention relates to a method for removing iron from an iron-containing zinc sulfate solution. Background technique [0002] Iron usually enters the solution in the form of impurities in the zinc hydrometallurgy process. In order to obtain a purer zinc product, the iron precipitation in the solution will be removed before the product recovery process during the smelting process. The commonly used methods are neutralization method, goethite method, goethite method and iron oxide method, wherein the neutralization method, goethite method, goethite method iron removal slag iron content is low, iron slag is usually stored in tailings ponds, iron oxide method The obtained product can be used as a raw material for cement and ironmaking or to produce iron red products due to its high iron content, which can not only solve the problem of environmental pollution, but als...

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
IPC IPC(8): C22B3/44C22B19/20
CPCY02P10/20
Inventor 董爱国殷书岩吴筱王鸿振申美玲傅建国
Owner CHINA ENFI ENGINEERING CORPORATION
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