Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for extracting selenium from selenium-containing anode mud through oxygen-enriched boiling roasting-organic reduction

A technology of boiling roasting and anode slime, which is applied in the field of non-ferrous metal metallurgy, can solve the problems of selenium-containing anode slime that is not very clean and efficient, simple to operate, and achieves simple operation, clean process, high purity and direct yield. Effect

Active Publication Date: 2019-05-14
HUNAN UNIV OF TECH
View PDF12 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved in the present invention is to provide a method for selenium-containing anode slime with oxygen-enriched boiling roasting-organic reduction to extract selenium in view of the problem that the current selenium-containing anode slime does not have a good cleaning, high-efficiency, and simple and convenient treatment process. Through oxygen-enriched roasting, under the condition of not introducing incremental flux, instead of the traditional sulfated roasting process, the high-efficiency oxidation of selenium-containing anode slime is completed, and the oxidation flue gas is absorbed and reduced by the organic short-chain solution to complete the direct preparation of elemental selenium , the roasted slag can be recovered copper by acid leaching process

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 for extracting selenium from selenium-containing anode mud through oxygen-enriched boiling roasting-organic reduction
  • Method for extracting selenium from selenium-containing anode mud through oxygen-enriched boiling roasting-organic reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] This embodiment provides a method for extracting selenium from selenium-containing anode mud by oxygen-enriched boiling roasting and organic reduction. The process flow chart is as attached figure 1 As shown, it specifically includes the following steps:

[0053] S1. Weigh 1000g of selenium-containing anode slime with the above ingredients, finely grind them to pass -60 mesh screen, put them into a boiling furnace, heat up to 800℃, and blow in 60% concentration at a linear velocity of 1.5m / s Oxygen-enriched air was roasted for 2.0 hours. After the reaction, a selenium-containing flue gas and a roasting slag composed of a large amount of copper oxide were obtained. The weight of the roasting slag was weighed to be 1014.27g, and the copper content was 44.11%. The calculated copper yield was 97.41. %;

[0054] S2. Turn on the exhaust and atomization devices at the same time, pass the selenium-containing flue gas obtained in step S1 into the absorption chamber, and spray an etha...

Embodiment 2

[0057] This embodiment provides a method for extracting selenium from selenium-containing anode mud by oxygen-enriched boiling roasting and organic reduction. The process flow chart is as attached figure 1 As shown, the atomization liquid of the present invention is the post-selenium precipitation liquid of Example 1, and new ethanol is added to make the concentration reach 35%. It includes the following steps:

[0058] S1. Weigh 1000g of selenium-containing anode slime with the above components, finely grind them to pass through a -100 mesh screen, put them into a boiling furnace, heat up to 850℃, and blow in a concentration of 60% at a linear velocity of 2.5m / s The oxygen-enriched air was roasted for 2.0h. After the reaction, the selenium-containing flue gas and a roasting slag composed of a large amount of copper oxide were obtained. The weight of the roasting slag was weighed to be 1013.44g, and the copper content was 42.68%. The direct yield of copper was calculated 94.17%; ...

Embodiment 3

[0062] This embodiment provides a method for extracting selenium from selenium-containing anode mud by oxygen-enriched boiling roasting and organic reduction. The process flow chart is as attached figure 1 As shown, it specifically includes the following steps:

[0063] S1. Weigh 1000g of the selenium-containing anode slime with the above components, finely grind them until they all pass through a -60 mesh screen, put them into a boiling furnace, heat up to 700°C, and blow in a concentration of 50% at a linear velocity of 1.5m / s The oxygen-enriched air is roasted for 2.0h. After the reaction, a roasting slag composed of a large amount of copper oxide and selenium-containing flue gas is obtained. The weighing of the roasting slag is 1032.14g, and the copper content is 43.75%. The copper direct yield is calculated 98.32%;

[0064] S2. Turn on the ventilation and atomization devices at the same time, pass the selenium-containing flue gas obtained in step S1 into the absorption chamber...

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
densityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of nonferrous metal metallurgy, and particularly discloses a method for extracting selenium from selenium-containing anode mud through oxygen-enriched boiling roasting-organic reduction. In the method, selenium-containing anode mud is taken as a raw material, and is finely ground and then added into a boiling roasting furnace; oxygen-enriched air is blown into the furnace to carry out boiling roasting in a temperature range of 600-900 DEG C, so that the anode mud mainly in a metal form is oxidized; a roasting product is selenium-containing flue gasand roasting slag; the selenium-containing flue gas is atomized, absorbed and reduced by a short-chain organic water solution to obtain atomized liquid and tail gas containing elemental selenium, andelemental selenium is separated from the atomized liquid by sedimentation; and tail liquid generated in the separation process is returned to the atomizing, absorbing and reducing process, the tail gas can be directly discharged, and the roasting slag is metal oxide and can be delivered to copper extraction by acid leaching. The method provided by the invention has the characteristics of economical efficiency, high efficiency, simple operation, safety and environmental protection, realizes the clean extraction of selenium from selenium-containing anode mud in a short process, and is easy to carry out industrial production.

Description

Technical field [0001] The invention belongs to the technical field of non-ferrous metal metallurgy, and more specifically relates to a method for extracting selenium from selenium-containing anode slime by oxygen-enriched boiling roasting-organic reduction. Background technique [0002] Selenium is an important strategic rare metal, widely used in the chemical, petroleum, pharmaceutical, electronics, metallurgical and other industries. Selenium is mainly associated with non-ferrous metal slags of copper, nickel, lead, and zinc in the primary slag, and rarely separate slag, which is mainly recovered in the electrolytic anode mud of copper, nickel and lead. The by-product selenium of copper smelting enterprises accounts for the total More than 60% of the selenium output. At present, the main recovery treatment of selenium-containing anode slime is sulfated roasting-SO 2 There are two major categories: reduction method and solution chemistry method. [0003] Sulfated roasting-SO 2 R...

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): C01B19/02C22B15/00
CPCY02P10/20
Inventor 叶龙刚王岳俊肖利胡宇杰夏志美
Owner HUNAN UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com