Supercharge Your Innovation With Domain-Expert AI Agents!

Method for extracting vanadium from vanadium slag through manganese roasting

A vanadium slag and roasting technology, which is applied in the field of vanadium extraction from vanadium slag, can solve the problems of difficult reuse of waste water and vanadium extraction tailings, waste of resources and energy, and no suppression of ring formation, so as to reduce temperature, realize recycling, and achieve high efficiency. The effect of economic and social benefits

Active Publication Date: 2014-07-02
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
View PDF3 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The biggest problem currently existing in the process of vanadium extraction by sodium roasting is that waste water and vanadium extraction tailings are difficult to effectively reuse, and there is a lot of waste in resources and energy
In China, Panzhihua Iron and Steel mainly adopts the calcification roasting vanadium extraction process, but there are also problems such as vanadium slag roasting rings in production, which need further research
[0004] In the existing patent literature, the basic method is to add sodium salt, potassium salt or calcium-containing substances for high-temperature roasting, but these substances have no inhibitory effect on the ring formation caused by high-temperature roasting

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0035] Break the vanadium slag containing the ingredients listed in Table 1 to below 120 mesh, take 100g of vanadium slag and mix with 14.7g of manganese dioxide, add it to a muffle furnace for high-temperature roasting, control the roasting temperature to 800°C, and the roasting time to 2h; After the roasted clinker is cooled, crush the clinker to 120 mesh, the crushed clinker is 118.2g, add it into 120ml water, keep the water temperature at 40°C, add sulfuric acid with a mass concentration of 30%, and adjust the pH of the leaching The value is maintained at 2.8, and the leaching time is controlled to be 40min. After filtering, the vanadium-containing leach solution is obtained. It is detected that the vanadium extraction tailings contain 1.2% vanadium pentoxide, and the vanadium leaching rate is 92.2%.

example 2

[0037] The vanadium slag containing the components listed in Table 1 is crushed to below 120 mesh, and 100g of vanadium slag is mixed with 29.4g of 85wt%MnO 2 The electrolytic manganese anode slime is mixed evenly, added to the muffle furnace for high-temperature roasting, the roasting temperature is controlled at 850°C, and the roasting time is 2 hours; after the roasted clinker is cooled, the clinker is crushed to 120 mesh, and the crushed clinker is 143.8g, add it to 200ml of water, keep the water temperature at 50°C, add sulfuric acid with a mass concentration of 50%, maintain the pH value during leaching at 3.5, control the leaching time to 100min, obtain the vanadium-containing leaching solution after filtration, and detect the vanadium extraction The tailings contain 0.5% vanadium pentoxide, and the leaching rate of vanadium is 94.8%.

example 3

[0039]Break the vanadium slag containing the ingredients listed in Table 1 to below 120 mesh, mix 100g of vanadium slag with 73.7g of manganese dioxide, add it to a muffle furnace for high-temperature roasting, control the roasting temperature to 900°C, and the roasting time to 4h; After the roasted clinker is cooled, crush the clinker to 120 mesh, the crushed clinker is 176.2g, add it to 300ml of water, keep the water temperature at 60°C, add sulfuric acid with a mass concentration of 60%, and adjust the pH during leaching The value is maintained at 4.0, and the leaching time is controlled to be 100min. After filtration, the vanadium-containing leach solution is obtained. The vanadium extraction tailings contain 0.8% vanadium pentoxide, and the vanadium leaching rate is 96.8%.

[0040] In summary, the present invention uses high-valent manganese-containing materials as oxidants for roasting, which can effectively avoid the ringing phenomenon of vanadium slag in the roasting pr...

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 discloses a method for extracting vanadium from vanadium slag through manganese roasting. The method comprises the following steps: a. breaking the vanadium slag, mixing the broken vanadium slag with an oxidant and then carrying out high-temperature roasting, thus obtaining a clinker; b. breaking the clinker, mixing the broken clinker with water and then adding acid liquor for leaching, thus obtaining vanadium-containing leachate and tailings for vanadium extraction, wherein the oxidant is a material containing quadrivalent manganese. The method has the beneficial effects that the material containing high valent manganese is adopted as the oxidant, so that vanadium and manganese are combined in the roasting process to form a manganese vanadate compound, ring forming of the vanadium slag in the roasting process can be effectively avoided and the vanadium slag roasting temperature is reduced; the method is short in process flow; without sodium salt, the tailings for vanadium extraction are easy for reuse in blast furnaces and realize recycling of the vanadium resources; therefore the method has higher economic and social benefits.

Description

technical field [0001] The invention belongs to the technical field of vanadium extraction from vanadium slag, and more specifically relates to a method for extracting vanadium from manganized roasted vanadium slag. Background technique [0002] Vanadium is an important metal element with many excellent properties, and it is widely used in various fields. About 85wt% of vanadium in the world is used in the steel industry, and the remaining 15wt% is mainly used in aerospace alloys, vanadium batteries, chemical industry, catalysts and other industries. [0003] The vanadium slag produced by vanadium-titanium magnetite is the main raw material for extracting vanadium at present. At present, the techniques for extracting vanadium from vanadium slag mainly include sodium roasting-water leaching vanadium extraction process and calcification roasting-acid leaching vanadium extraction process. The biggest problem in the process of vanadium extraction by sodium roasting is that wast...

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
IPC IPC(8): C22B7/00C22B34/22
CPCY02P10/20
Inventor 殷兆迁陈相全高官金李千文
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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