Method for back extraction of amine molybdenum-containing organic phase
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
An organic phase and stripping agent technology, which is applied in the field of amine molybdenum-containing organic reverse extraction to achieve the effects of strong practicability, simple process and improved operability
Inactive Publication Date: 2018-12-18
BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
View PDF10 Cites 1 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
[0005] Existing interface fouling reduction or elimination technologies are effective for specific systems
However, there is no way to reduce the interface dirt generated in the process of organic reverse extraction of molybdenum-containing amines. Therefore, a method for organic reverse extraction of molybdenum-containing amines has been invented.
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
[0031] In the molybdenum-containing organic phase of an amine, the amine concentration is 1%, and the molybdenum concentration is 1g / L.
[0032] With 5% ammonia water as stripping agent, the addition of hydrogen peroxide is 1% of the addition of ammonia water.
[0033] The stripping flow ratio was controlled to be 50:1, the mixing contact ratio was 4:1, the mixing time was 1 min, and the stripping temperature was 10°C.
[0034] The concentration of molybdenum in the poor organic phase obtained by stripping is 0.04g / L, and the concentration of molybdenum in the backextraction solution is 102g / L, and the generation of interface dirt is reduced by 55.3%.
example 2
[0036] In the molybdenum-containing organic phase of certain amines, the amine concentration is 5%, and the molybdenum concentration is 7g / L.
[0037] With 15% ammonia water as stripping agent, the addition of hydrogen peroxide is 2% of the amount of ammonia addition.
[0038] The stripping flow ratio was controlled to be 15:1, the mixing contact ratio was 1:1, the mixing time was 6min, and the stripping temperature was 25°C.
[0039] The concentration of molybdenum in the poor organic phase obtained by stripping was 0.06g / L, and the concentration of molybdenum in the backextraction solution was 106g / L, and the generation of interface dirt was reduced by 57.2%.
example 3
[0041] In the molybdenum-containing organic phase of certain amines, the amine concentration is 7.5%, and the molybdenum concentration is 11g / L.
[0042] With 16% ammoniacal liquor as stripping agent, the addition of hydrogen peroxide is 4% of the ammoniacal liquor addition.
[0043] The stripping flow ratio was controlled to be 10:1, the mixing contact ratio was 1:2, the mixing time was 5 min, and the stripping temperature was 20°C.
[0044] The concentration of molybdenum in the poor organic phase obtained by stripping is 0.05g / L, the concentration of molybdenum in the backextraction solution is 110g / L, and the generation of interface dirt is reduced by 56.5%.
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 invention relates to a method for back extraction of amine molybdenum-containing organic phase. The method adopts single stage back extraction or multi-stage back current back extraction, the amine molybdenum-containing organic phase comprises the following components by concentration: 1-20% of amine, 1-30 g/L of molybdenum, and the balance a phase improver and a diluent. The method comprisesthe following steps that 1, a back extraction agent is prepared, the back extraction agent is mixed solution of ammonia and hydrogen peroxide, the ammonia concentration range is 5-28%, the hydrogen peroxide addition is 1-15% of the ammonia addition, and the concentration range of the hydrogen peroxide is 10-50%; 2, the back extraction agent prepared by the step one and the amine containing-molybdenum organic phase are subjected to mixing and back extraction, the flow ratio of the organic phase to a water phase is 2:1-50:1, the back extraction time is 1-10 min, the back extraction temperature is 10-40 DEG C, and the contact phase ratio between the organic phase and the water phase is 4:1-1:4; and 3, and the mixed phase obtained in the step two is separated to obtain the containing-molybdenum back extraction fluid and a stripped organic phase. By means of the method, the interfacial dirt produced in the back extraction process of the amine containing-molybdenum organic phase can be reduced by more than 50%.
Description
technical field [0001] The invention relates to the field of extracting molybdenum by a solvent extraction method in hydrometallurgy, in particular to an organic reverse extraction method for amines containing molybdenum. Background technique [0002] The current amine extraction method for preparing ammonium molybdate uses ammonia water as the stripping agent, and countercurrent stripping is used to obtain the stripping solution and the organic-poor phase. After the stripping liquid is purified and removed, and the sulfuric acid is neutralized to a pH of about 2, ammonium molybdate crystals are precipitated, and the crystals are ammonium molybdate products. [0003] There are some problems in the current molybdenum stripping process, some of which have been mentioned and solved in the patent "A stripping method of molybdenum-containing organic phase" (CN106591603A), and there are still some problems in the actual stripping operation process. The problem of interface dirt. ...
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
Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/34C22B3/28
CPCC22B34/34C22B3/28Y02P10/20
Inventor 支梅峰周志全赵凤岐舒祖骏张永明曹令华王皓
Owner BEIJING RESEARCH INSTITUTE OF CHEMICAL ENGINEERING AND METALLURGY
Login to view more 
Login to view more