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

A method for treating regenerated lead using an improved side-blown smelting reduction furnace

A technology of reducing furnace and regenerating lead, applied in the field of non-ferrous metallurgy, can solve the problems of high introduction cost, low degree of automation, large construction investment, etc., and achieve the effect of low production cost, less labor force and compact process

Active Publication Date: 2017-11-21
CHINA ENFI ENGINEERING CORPORATION
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current mainstream treatment process for secondary lead miscellaneous materials is to enter the oxygen bottom-blown or oxygen-enriched top-blown smelting furnace together with the raw ore. However, due to the limited coverage of lead ore factories, most domestic non-mining lead enterprises adopt transfer sintering machine + blast furnace process. Secondary lead miscellaneous materials, but the traditional process has high energy consumption, serious environmental pollution, low degree of automation, and it is difficult to meet the increasingly stringent environmental requirements and access conditions of the country, so it has been basically eliminated
Other more advanced smelting processes are Essa method or Osmelt method, but the above two technologies are foreign proprietary technologies, the introduction cost is high and the construction investment is large, which is difficult for ordinary enterprises to bear

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
  • A method for treating regenerated lead using an improved side-blown smelting reduction furnace
  • A method for treating regenerated lead using an improved side-blown smelting reduction furnace
  • A method for treating regenerated lead using an improved side-blown smelting reduction furnace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0042] An embodiment of the present invention provides a method for treating regenerated lead by using an improved side-blown smelting reduction furnace, the method includes: putting the regenerated lead into the improved side-blown smelting reduction furnace, adding flux at the same time, passing through the smelting reduction furnace The multi-channel spray guns 30 on both sides of the furnace spray oxygen-rich gas, reducing agent and fuel into the mixing zone of the molten pool at a flow rate of 180m / s-280m / s, so that the materials in the furnace undergo melting and reduction reactions and generate crude lead and smelting slag; The above-mentioned molten pool mixing zone refers to the transi...

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for treating secondary lead through an improved side-blowing smelting reduction furnace. The method comprises the steps that the secondary lead is put into the improved side-blowing smelting reduction furnace, meanwhile, a smelting agent is added, oxygen-enriched gas, a reduction agent and fuel are sprayed into a smelting pool mixing area of the smelting reduction furnace at the flow speed of 180-280 m / s through multichannel spray guns on the two sides of the smelting reduction furnace, so that materials in the smelting reduction furnace are subjected to a smelting reduction reaction, and wet lead and smelting slag are generated; the wet lead and the smelting slag are included in the smelting pool mixing area at the same time; and the smelting slag is discharged out of a slag outlet of the smelting reduction furnace, and the wet lead is discharged out of a metal discharge opening of the smelting reduction furnace. The method for smelting the secondary lead is compact in procedure, small in fixed number of workers, environment-friendly and low in production cost.

Description

technical field [0001] The invention relates to the field of nonferrous metallurgy, in particular to a method for treating regenerated lead by using an improved side-blown smelting reduction furnace. Background technique [0002] Due to the current situation of tight supply of high-grade lead concentrates, the profit margins of lead concentrates are very low, and the secondary lead process for processing lead-containing secondary miscellaneous materials has been paid more and more attention. Lead and silver slag produced by hot acid leaching of jarosite, lead and silver slag produced by zinc oxide fumes, lead sulfate paste of waste lead-acid batteries, and lead soot produced by copper factories are in urgent need of treatment. [0003] The current mainstream treatment process for secondary lead miscellaneous materials is to enter the oxygen bottom-blown or oxygen-enriched top-blown smelting furnace together with the raw ore. However, due to the limited coverage of lead ore f...

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 Patents(China)
IPC IPC(8): C22B13/02
CPCC22B13/02
Inventor 陈学刚
Owner CHINA ENFI ENGINEERING CORPORATION
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