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

Method and application for recovering metal from bag dust of reverberating furnace

A bag ash, reverberatory furnace technology, applied in the direction of improving process efficiency, can solve problems such as waste of resources, and achieve the effect of less environmental pollution and good benefits

Inactive Publication Date: 2018-06-01
GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Bag ash is not only an environmental pollutant, but also a potential resource; in the early days, metallurgical solid wastes such as bag ash that were difficult to handle could only be piled up or landfilled. would result in a huge waste of resources

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 and application for recovering metal from bag dust of reverberating furnace
  • Method and application for recovering metal from bag dust of reverberating furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] This embodiment provides a method for recovering metal from reverberatory furnace bag ash, mainly comprising:

[0037] Mix the reverberatory furnace bag ash and water at a solid-to-liquid ratio of 1g:3mL, stir for 60min at room temperature, and filter to obtain the washing liquid and washing residue. The mass fractions of components in the washed slag are: As 5.31%, Sn 12.38%, Pb 14.89%, Zn 20.31%, Cu 3.76%, and the washing solution contains Zn 3.37g / L and Cu 1.36g / L.

[0038] The water-washed residue and sodium carbonate were mixed at a mass ratio of 1:1.2, and roasted at a temperature of 550° C. for 3 hours to obtain a roasted product.

[0039] The calcined product was pulverized and ground to 70 mesh. The roasted product and water were mixed at a solid-to-liquid ratio of 1g:3mL, reacted at a temperature of 85°C for 2 hours, and the stirring intensity was 200rpm, and filtered to separate the solid and liquid to obtain the leaching residue and leaching liquid. Among ...

Embodiment 2

[0045] This embodiment provides a method for recovering metal from reverberatory furnace bag ash, mainly comprising:

[0046] Mix the reverberatory furnace bag ash and water at a solid-to-liquid ratio of 1g:4mL, stir for 30 minutes at room temperature, and filter to obtain the washing liquid and washing residue. The mass fractions of components in the washed slag are: As 5.31%, Sn 12.38%, Pb 14.89%, Zn 20.31%, Cu 3.76%, and the washing solution contains Zn 3.37g / L and Cu 1.36g / L.

[0047] Mix the water-washed slag and sodium carbonate at a mass ratio of 1:1, and roast at a temperature of 650°C for 2 hours to obtain a roasted product.

[0048] The roasted product was pulverized and ground to 90 mesh. The roasted product and water were mixed at a solid-to-liquid ratio of 1g:4mL, reacted at a temperature of 80°C for 3 hours, and the stirring intensity was 250rpm, and filtered to separate the solid and liquid to obtain the leaching residue and leaching liquid. Among them, the le...

Embodiment 3

[0054] This embodiment provides a method for recovering metal from reverberatory furnace bag ash, mainly comprising:

[0055] Mix the reverberatory furnace bag ash and water at a solid-to-liquid ratio of 1g:3mL, stir at room temperature for 60min, and filter to obtain the washing liquid and washing residue. The mass fraction of the ingredients in the washed slag is: As5.21%, Sn 12.13%, Pb 14.60%, Zn 20.34%, Cu 4.08%, the washing liquid contains Zn 3.02g / L, Cu 0.54g / L, As, Sn, Pb Does not leach. The recovery rate of Cu was 96.03%, and the recovery rate of Zn was 95.57%.

[0056] The water-washed residue and sodium carbonate were mixed at a mass ratio of 1:1.4, and roasted at a temperature of 600°C for 3 hours to obtain a roasted product.

[0057] The roasted product was pulverized and ground to 80 mesh. The roasted product and water were mixed at a solid-to-liquid ratio of 1g:3mL, reacted at a temperature of 75°C for 4 hours, and the stirring intensity was 300rpm, and filter...

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 provides a method and application for recovering metal from bag dust of a reverberating furnace and relates to the technical field of solid waste. The method for recovering the metal from the bag dust of the reverberating furnace comprises the steps of mixing the bag dust of the reverberating furnace with water for water washing and filtering; mixing and roasting obtained water washed slag and alkali; mixing, leaching and filtering a roasted product, mixing leached slag and sulfuric acid to conduct reaction and filtering, and conducting purification on a leaching solution, an acid leaching waste solution and acid leached slag to obtain arsenate, tin-lead ores, zinc sulfate and sponge copper correspondingly. The method has the advantages that operation is easy and convenient,the controllability is strong, the comprehensive recovery rate is high, and the process is clean.

Description

technical field [0001] The invention relates to the technical field of solid waste, and in particular to a method and application for recovering metals from reverberatory furnace bag ash. Background technique [0002] Reverberatory furnace bag ash refers to the dust that carries a large amount of raw fuel in the flue gas discharged from the reverberatory furnace during the smelting process of non-ferrous metals and the particles produced by the intense reaction in the high temperature area. Filter out the filtered dust. [0003] Bag ash is not only an environmental pollutant, but also a potential resource; in the early days, metallurgical solid wastes such as bag ash that were difficult to handle could only be piled up or landfilled. It will cause a great waste of resources. Therefore, how to better recycle bag ash resources and seek the optimization of environmental benefits, social benefits, and economic benefits is the focus of research on metal recycling in bag ash. ...

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): C22B7/02C22B30/04C22B13/00C22B25/06C22B19/20C22B15/00C22B1/02C22B23/00C22B30/02
CPCC22B1/02C22B7/007C22B7/02C22B13/045C22B15/0071C22B19/22C22B23/043C22B25/04C22B25/06C22B30/02C22B30/04Y02P10/20
Inventor 王文祥郭艳平李慧颖王晓阳莫越坚
Owner GUANGDONG POLYTECHNIC OF ENVIRONMENTAL PROTECTION ENG
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