Process for magnetically separating and recovering iron and carbon from zinc volatilization kiln slag through dry method

A technology of zinc volatilization and magnetic separation, applied in recycling technology, mechanical material recovery, solid separation, etc., can solve problems such as single sorting materials, low sorting grade and recovery rate, and large-scale stacking pollution, so as to reduce environmental pollution Effects of pollution, improvement of magnetic separation index, and improvement of concentrate grade

Inactive Publication Date: 2011-04-27
HENAN POLYTECHNIC UNIV
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] According to national statistics in 2010, from January to June, my country’s zinc production increased by 30.4% to 2.477 million tons; with the increase of zinc production year by year, zinc volatilization kiln slag is a common industrial solid waste in the zinc smelting industry. At the same time, zinc volatilization kiln slag is rich in a variety of valuable components, the content of which is more: iron and residual coke from zinc smelting, which are relatively common; and currently mature The treatment process mainly focuses on the comprehensive recovery of precious metals, but ignores the comprehensive utilization of rich iron and carbon; resource treatment cannot

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
  • Process for magnetically separating and recovering iron and carbon from zinc volatilization kiln slag through dry method
  • Process for magnetically separating and recovering iron and carbon from zinc volatilization kiln slag through dry method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] The present invention will be further described below in conjunction with embodiments (figure drawings):

[0029] Such as figure 1 As shown, in the pre-classification process of the kiln slag before selection in the present invention, through the pre-selection air fluidized bed wind classification 1, the material classification particle size is determined to be +-3mm, which can obtain +3mm coarse-grained products and -3mm fine Granular products. Among them, the +3mm coarse-grained product is used as the raw material for the coarse-grained iron separation process. The specific processes include: 7. Featured 8; -3mm fine-grained product as fine-grained microwave drying 14--The raw materials for the 15th process of magnetic separation and carbon collection process.

[0030] Microwave drying of fine particles in the present invention 14--The 15th process of cascaded magnetic separation and carbon collection process. The specific separation process refers to: 1) Microwav...

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 process for magnetically separating and recovering iron and carbon from zinc volatilization kiln slag through a dry method, which is characterized by comprising the following processes of: pre-grading before kiln slag separation, performing fine-grain microwave drying-gradient magnetic separation and carbon collection, and separating iron from coarse grains, wherein the process of separating iron from coarse grains comprises the steps of: performing two-stage crushing, performing primary pre-magnetic separation tailings-discarding, performing air classification-dry ball-milling, and performing microwave drying-secondary magnetic separation and cleaning. The method can improve the separating grade of the product, realizes resource recycling, and can be popularized to the field of separating materials with obvious magnetic difference and the like from solid wastes.

Description

technical field [0001] The present invention relates to a set of new technology of all-dry permanent magnetic separation, in particular to a technology for recovery of iron and carbon by dry magnetic separation of zinc volatilization kiln slag; the technology can also be extended to solid waste The field of sorting materials with obvious magnetic differences has certain significance for the comprehensive utilization of valuable components. Background technique [0002] According to the national statistics in 2010, from January to June, my country’s zinc production increased by 30.4% to 2.477 million tons; with the increase of zinc production year by year, zinc volatilization kiln slag is a common industrial solid waste in the zinc smelting industry. At the same time, zinc volatilization kiln slag is rich in a variety of valuable components, the content of which is more: iron and residual coke from zinc smelting, which are relatively common; and currently mature The treatment ...

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): B03B9/06B03B1/00
CPCY02W30/52
Inventor 马娇史长亮焦红光张乾李勇军黄定国
Owner HENAN POLYTECHNIC UNIV
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