A method for decomposing wolframite under pressure and countercurrent with sulfur-phosphorus mixed acid
A technology of sulfur-phosphorus mixed acid and wolframite, applied in the field of hydrometallurgy, can solve the problem of inability to decompose directly, and achieve the effect of low decomposition cost, speeding up the reaction speed, and realizing the effect of recycling.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0045] This embodiment relates to a method for decomposing wolframite under pressure and countercurrent with sulfur-phosphorus mixed acid, including the following steps:
[0046] 1) will WO 3 Wolframite powder with a content of 65% is mixed with a mixed acid of phosphoric acid and sulfuric acid at a mass volume ratio of 1:6, wherein the concentration of phosphoric acid is 120g / L, and the concentration of sulfuric acid is 160g / L. By pressurizing the reaction system to 1.85 MPa, control the reaction temperature at 200°C, react for 3.0 hours, extract tungsten from wolframite, filter the system after the reaction is completed, and obtain the filtrate;
[0047] 2) Mix fresh wolframite powder with the filtrate again at a mass volume ratio of 1:6, and extract according to the same conditions as described in step 1), to obtain qualified leachate and incompletely leached decomposition slag;
[0048]3) Use 30% TBP + 10% 2-octanol + kerosene as the organic phase to extract the tungsten ...
Embodiment 2
[0053] This embodiment relates to a method for decomposing wolframite under pressure and countercurrent with sulfur-phosphorus mixed acid, including the following steps:
[0054] 1) will WO 3 Wolframite powder with a content of 51% is mixed with a mixed acid of phosphoric acid and sulfuric acid at a mass volume ratio of 1:4, wherein the concentration of phosphoric acid is 130g / L, and the concentration of sulfuric acid is 180g / L. By pressurizing the reaction system to 1.25 MPa, control the reaction temperature at 180°C, react for 2.0 hours, extract the tungsten in wolframite, filter the system after the reaction is completed, and obtain the filtrate;
[0055] 2) Mix fresh wolframite powder with the filtrate described in step 1) again with a mass volume ratio of 1:4, and extract under the same conditions as described in step 1), to obtain qualified leachate and incomplete leaching decomposition slag;
[0056] 3) Use 20% TBP+10% 2-octanol+kerosene as the organic phase to extrac...
Embodiment 3
[0061] This embodiment relates to a method for decomposing wolframite under pressure and countercurrent with sulfur-phosphorus mixed acid, including the following steps:
[0062] 1) will WO 3 Wolframite powder with a content of 35% is mixed with a mixed acid of phosphoric acid and sulfuric acid at a mass volume ratio of 1:10, wherein the concentration of phosphoric acid is 100g / L, and the concentration of sulfuric acid is 200g / L. By pressurizing the reaction system to 0.75 MPa, control the reaction temperature at 160°C, react for 4.0 hours, extract tungsten from wolframite, filter the system after the reaction is completed, and obtain the filtrate;
[0063] 2) Mix fresh wolframite powder with the filtrate again in a mass volume ratio of 1:10, and extract according to the same conditions as described in step 1), to obtain qualified leachate and incompletely leached decomposition slag;
[0064] 3) using 40% sec-octanol+kerosene as the organic phase to extract the tungsten in th...
PUM
Property | Measurement | Unit |
---|---|---|
particle size | aaaaa | aaaaa |
decomposition efficiency | aaaaa | aaaaa |
decomposition efficiency | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com