Copper smelting method

A technology of copper smelting and blister copper, which is applied in the field of copper smelting to achieve the effects of saving investment, low slagging rate and benefiting acid production

Inactive Publication Date: 2006-02-22
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has not been practically applied in production

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 smelting method
  • Copper smelting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add lime to the copper concentrate according to the CaO / Fe ratio of 0.27, add 3% of the total weight of coal, control the temperature of the melt at 1200°C, and blow in air for melting desulfurization. A molten desulfurization slag containing 26.1% Cu and 0.01% S was obtained with a yield of 81% (relative to copper concentrate). The desulfurization rate is 99.9%.

[0019] Cu

Embodiment 2

[0022] According to the CaO / Fe ratio of 0.36, add limestone to the copper concentrate, add 4% of the total weight of coal, control the temperature of the melt at 1180°C, and blow in air for melting desulfurization. A molten desulfurization slag with a yield of 85% (relative to copper concentrate) and a content of S0.07% was obtained. The desulfurization rate is 99%.

[0023] Cu

Embodiment 3

[0026] Add lime to the copper concentrate according to the CaO / Fe ratio of 0.25, add 5% of the total weight of coal, control the temperature of the melt at 1250°C, and blow in air for melting desulfurization.

[0027] Cu

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 is a kind of copper refining method, which refers to a method for using fire method refining process to extract raw copper from copper preparation concentrate, especially the method which eliminates the sulfur in the copper preparation concentrate and reduces and refines the desulfurated product into raw copper. The character lies in: uses Fe in the copper preparation concentrate to calculate, adds in lime or lime stone according to proportion CaO / Fe=0.25-0.5, and adds in coal about 3-5% of preparation concentrate weight, and puts them into stove, and blows in oxygen, melts them under 1180 -1300deg.C; the generated smoke are sent into the acid producing system, the melted desulfurated dregs are put into the stove to be reduced into raw copper. The invention save the investment, the utility rate of sulfur is high.

Description

technical field [0001] A copper smelting method. The invention relates to a method for extracting blister copper from copper concentrate by adopting a pyrometallurgical process, especially a method for substantially removing sulfur in copper concentrate in a molten state, and then reducing and smelting the desulfurized product into blister copper. Background technique [0002] At present, there are many methods for smelting blister copper from copper concentrate in the world. The traditional method is to use reverberatory furnace or blast furnace for smelting, which has backward technology, high energy consumption and low utilization rate of sulfur, and is being phased out gradually. The subsequent flash smelting and molten pool smelting process fully utilizes the reaction heat of copper concentrate in the enhanced smelting process, effectively reduces fuel consumption, produces flue gas with high concentration of sulfur dioxide, and can use conventional methods to produce ...

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): C22B15/00
Inventor 李昌福袁平孙凤芹原保庆刘述宗李晔
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
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