Method for preparing nano-scale alpha-type calcium sulfate hemihydrate whiskers from phosphogypsum in reverse microemulsion system
An inverse microemulsion, calcium sulfate hemihydrate technology, applied in chemical instruments and methods, single crystal growth, crystal growth and other directions, can solve the problem that phosphogypsum has not seen relevant reports, and promote the utilization of high value-added resources. , the process is simple, the effect of low energy consumption
Active Publication Date: 2020-02-25
KUNMING UNIV OF SCI & TECH
8 Cites 10 Cited by
AI-Extracted Technical Summary
Problems solved by technology
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 moreMethod 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 moreAbstract
The invention relates to a method for preparing nano-scale alpha-type calcium sulfate hemihydrate whiskers in a reverse microemulsion system under normal pressure by using raw phosphogypsum as a raw material, and belongs to the technical field of preparation of inorganic functional materials. A fatty primary alcohol, a surfactant, and water are adopted to construct the reverse microemulsion reaction system, the raw phosphogypsum is added in a proportion, after uniform stirring, a PH regulator is added to control the PH value, and a crystal accelerator is added in a proportion; the reverse microemulsion reaction system is heated to a control temperature, and alpha-type calcium sulfate hemihydrate whiskers are formed by crystallization in nano-scale water droplets; and after filtering, washing and drying, the nano-scale alpha-type calcium sulfate hemihydrate whiskers having a high added value and having a diameter range of 200 nm to 500 nm are formed. The method has the advantages of simple process, high operability, short preparation time, low energy consumption, high yield, multiple times of use of the reverse microemulsion and washing water, high product added value, and the like,and is of great significance to ecological environment protection, natural gypsum resource saving, promotion of high value-added resource utilization of the phosphogypsum.
Application Domain
Technology Topic
Image
Examples
- Experimental program(5)
Example Embodiment
Example Embodiment
Example Embodiment
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
Property | Measurement | Unit |
Aspect ratio | 6.89 ~ 2440.0 | |
Aspect ratio | 16.67 ~ 15000.0 | |
Aspect ratio | 37.81 ~ 12100.0 | |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
Description & Claims & Application Information
We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.
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 Similar technology patents
Lithium secondary battery comprising fine fibrous porous polymer membrane and fabrication method thereof
InactiveUS20050053840A1Simple processMaterial nanotechnologyFinal product manufactureHybrid typeUltra fine
Owner:SAMSHIN CREATION
Hot rolling process of high-plasticity and low-anisotropy magnesium alloy and sheet thereof
ActiveCN101857933ASimple processEasy to controlTemperature control deviceProcess efficiency improvementZincMetal
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Alkali activated solidification and stabilization treatment method of refuse incineration fly ash
ActiveCN102303036ASimple and efficient operationSimple processSolid waste disposalChemistryPre treatment
Owner:深圳市龙岗区东江工业废物处置有限公司
Sensing Structure
ActiveUS20090194342A1Reduce material usageSimple processTransmission systemsPrinted circuit aspectsElectrical and Electronics engineering
Owner:AU OPTRONICS CORP
Classification and recommendation of technical efficacy words
- Strong maneuverability
- Simple process
Method for recycling metal oxide from waste flue gas denitration catalyst
Owner:HUADIAN ELECTRIC POWER SCI INST CO LTD
Method for realizing fast and automatic modeling of transformer substation IEC 61850 by adopting XML information recombination
ActiveCN101706773AEasy system maintenanceStrong maneuverabilityCircuit arrangementsSpecial data processing applicationsCollocationDigitization
Owner:BEIJING SIFANG JIBAO AUTOMATION +1
Method for producing low-temperature cold-pressed and refined tea seed oil
InactiveCN103013651AReasonable processStrong maneuverabilityFatty-oils/fats refiningFatty-oils/fats productionChemistryPeroxide value
Owner:NANJING UNIV OF FINANCE & ECONOMICS +1
Fracturing fracture geological design method of horizontal well of dense gas field
Owner:CHINA PETROLEUM & CHEM CORP +1
Deep convolutional neural network based SAR image sea ice sorting method
ActiveCN107516317AMeet real-time requirementsStrong maneuverabilityImage enhancementImage analysisSea icePre treatment
Owner:SHANGHAI OCEAN UNIV