Method for extracting copper for copper containing sulfurized ore
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A mineral and sulfuric acid technology, applied in the field of copper extraction from copper-bearing sulfide minerals, can solve problems such as ineffectiveness, inability to handle copper concentrates alone, excess sulfuric acid, etc.
Inactive Publication Date: 2002-07-17
BEIJING GENERAL RES INST OF MINING & METALLURGY +1
View PDF3 Cites 18 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, the following major problems still exist in pyrometallurgy: 1) In order to reduce the investment cost and operating cost of unit product, the scale of copper smelting plants is very large now, and it is necessary to transport the concentrate from other ore-producing places, even from abroad, so it is necessary to Pay the freight of the concentrate, and also bring the metal loss caused by the concentrate during the long-distance transportation; 2) The flue gas SO produced by the pyrometallurgy plant 2 and soot must be processed at a lot of co...
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
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
example 1
[0048] Composition (%) of copper minerals used for leaching: Cu 10.58, Zn 2.57, Fe 31.93, S39.33.
[0049] Pressure leaching conditions are as follows: Grind the copper concentrate until the particle size is -44μm and account for more than 90%, take 200g ore sample, leaching temperature 110°C, oxygen partial pressure 100kPa, initial sulfuric acid concentration = 20g / l, [NaCl] = 85g / l, the liquid-solid ratio is 5 / 1, and the reaction time is 2 hours.
[0050] Leaching rate (%)
example 2
[0052] Composition (%) of copper minerals used for leaching: Cu 10.58, Zn 2.57, Fe 31.93, S39.33.
[0053] Pressure leaching conditions are as follows: Grind the copper concentrate until the particle size is -44μm and account for more than 90%, take 200g ore sample, leaching temperature 105°C, oxygen partial pressure 150kPa, initial sulfuric acid concentration = 25g / l, [NaCl] = 90g / l, the liquid-solid ratio is 5 / 1, and the reaction time is 2 hours.
[0054] Leaching rate (%)
example 3
[0056] Composition (%) of the leached copper concentrate used: Cu 25.82, Zn 2.91, Fe 29.10, S35.02.
[0057] Pressure leaching conditions are as follows: Grind the copper concentrate until the particle size is -44μm and account for more than 90%, take a 50g ore sample, leaching temperature 110°C, oxygen partial pressure 100kPa, initial sulfuric acid concentration = 60g / l, [NaCl] = 90g / l, the liquid-solid ratio is 5 / 1, and the reaction time is 2 hours.
[0058] Leaching rate (%)
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
Login to view more
Abstract
The method for extracting copper from copper-bearing sulfide mineral is characterized by leaching copper-bearing mineral under the condition of introduction of oxygen and in the presence of sulfuric acid and chlorine ion, the liquid-solid ratio of leaching-out liquor is 1-8:1, primary concentration of sulfuric acid is 5-70 g/L, leaching total pressure is 200-1000 kPa, partial pressure of oxygen is 100-800 kPa, temp. is 100-130 deg.C and time is 1-4 hr. The leaching temp. and pressure of said method are low, its selectivity is good, the pyrite can not be oxidated, and the harmful impurity, for example arsenic, can be solidifed in arsenic-ion slag, so that it is a process friendly to environment.
Description
(1) Technical field [0001] A method for extracting copper from copper-containing sulfide minerals, relating to a method for extracting copper from copper-containing sulfide minerals or concentrates by pressure leaching, especially suitable for extracting copper-containing sulfide minerals or refractory copper-containing minerals, Such as the process of extracting copper from chalcopyrite, arsenic-containing copper sulfide ore, and copper-zinc mixed sulfide ore. (2) Background technology [0002] So far, pyrometallurgy still occupies a dominant position in the copper industry, especially for copper concentrates with chalcopyrite as the main mineral, ore dressing and pyrometallurgy are still the only industrialized technical routes. Although in recent years, the world's copper smelting technology has made great progress, flash smelting and various molten pool smelting technologies have basically replaced the traditional blast furnace, reverberatory furnace and electric furnace...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to view more
IPC IPC(8): C22B3/08C22B3/30
CPCY02P10/20
Inventor 蒋开喜刘大星王海北王春谢福标李岚林江顺
Owner BEIJING GENERAL RES INST OF MINING & METALLURGY
Login to view more 
Login to view more