Copper slag processing system and method

A processing system and processing method technology, applied in the field of copper slag processing system, can solve problems such as troublesome copper refining operations, inability to recover arsenic, and inability to recover zinc and lead, and achieve the effects of eliminating hidden pollution hazards, realizing full utilization, and realizing comprehensive recovery.

Inactive Publication Date: 2019-04-19
CHINA ENFI ENGINEERING CORPORATION
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Both traditional dilution electric furnace and slag beneficiation methods cannot recover zinc and lead in slag, and cannot deeply remove arsenic in slag
And the lead-containing fume produced by smelting returns to the copper smelting system, which brings troubles to the subsequent copper refining operation

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
  • Copper slag processing system and method
  • Copper slag processing system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] use figure 2 The copper slag recovery device shown in the figure is for the recycling of slag.

[0064] Flow the copper slag from the smelting furnace into the CR furnace, raise the temperature of the slag in the furnace to 1450°C; add 8% reducing agent lump coal and 5% additive quartz stone. The obtained alloy phase copper matte is discharged from the outlet at the bottom of the CR furnace. Grind ore to beneficiation standard after water crushing or air crushing, and finally produce copper matte with copper grade of 67% and iron powder with iron content of 91.5% after magnetic separation and / or flotation. Lead, zinc, and arsenic are recovered from volatile dust. The recovery of volatile dust adopts a graded recovery system. After the volatile dust is discharged with the smoke, it first passes through the waste heat boiler and high-temperature electric dust collector at about 300 degrees, and after collecting the lead-zinc soot, it is passed through the quenching towe...

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

A copper slag processing method comprises the steps that S11, copper slag and carbonaceous reducing agents accounting for 3-20% of the mass of the copper slag are put into a comprehensive recycling furnace to be smelted, the operation temperature of the comprehensive recycling furnace is 1350-1550 DEG C, operation power intensity is 100-250 kW/m<2>; and S12, copper matte of the alloy phase discharged from the bottom of the comprehensive recycling furnace is subjected to ore grinding to the beneficiation standard after water crushing or wind crushing, and the copper matte with the copper content of 30-75 wt%, iron powder with the iron content of more than 80 wt% and tailings are produced after magnetic separation and/or flotation. The invention further provides a copper slag processing system. The smelting slag is processed through a copper slag resourceful treatment technology, smoke rich in lead and zinc is processed in a matched mode, and the effect that copper, lead, zinc, stibium and arsenic in the slag are decreased to be 0.3%, 0.1%, 0.15%, 0.01% and 0.005% or below separately.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a copper slag processing system and method. Background technique [0002] The output rate of slag in the copper smelting process is generally 60% to 80%, and the copper content in slag is generally 1% to 4%. At present, there are two main processes for the recovery of copper in slag, one is traditional electric furnace dilution, and the other is slag beneficiation. . [0003] Due to the limitations of the technology and equipment conditions of the traditional electric furnace depletion process, the copper content of the treated slag is generally 0.6% to 0.8%, and the recovery rate of copper is low. [0004] Although the slag beneficiation process can reduce the copper content of the tailings to about 0.3%, the process has the disadvantages of long process, large floor area, and large investment. In addition, the slag beneficiation tailings have secondary pollution...

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): C22B7/04C22B5/10C22B15/00C21B11/00C21B3/02C22B19/00C22B13/02C22B30/04C04B7/147
CPCC04B7/147C21B3/02C21B11/00C22B5/10C22B7/001C22B7/04C22B13/025C22B15/0052C22B19/00C22B30/04Y02P10/20Y02P40/10
Inventor 李东波梁帅表黎敏郭亚光尉克俭马登
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