A5056899419- Extraction and Separation Processes
- Recycling and utilization of industrial and municipal waste in materials production
- Magnesium Oxide Properties and Applications
- Metal Extraction and Bioleaching
- Concrete and Cement Materials Research
- Recycling and Waste Management Techniques
- Antenna Design and Optimization
- Antenna Design and Analysis
- Adsorption and biosorption for pollutant removal
- Power Systems and Renewable Energy
- Welding Techniques and Residual Stresses
- Smart Grid and Power Systems
- Nanomaterials for catalytic reactions
- Building materials and conservation
- Aluminum Alloys Composites Properties
- Bauxite Residue and Utilization
- Minerals Flotation and Separation Techniques
- Microwave Engineering and Waveguides
- User Authentication and Security Systems
- Advanced Antenna and Metasurface Technologies
- Environmental remediation with nanomaterials
- Machine Fault Diagnosis Techniques
- Recycled Aggregate Concrete Performance
- Advanced Welding Techniques Analysis
Chinese National Engineering Research Center for Control and Treatment of Heavy Metal Pollution
2024
Central South University
2013-2024
Southwest University of Science and Technology
2020-2024
University of Electronic Science and Technology of China
2011-2013
In this paper, a novel idea is proposed to construct low-cost phased arrays by using the multi-port property of array elements. The operating principles are illustrated and explained in detail. A three-element patch subarray with periodic lattice conceived according idea. subarray, one antenna multiple ports designed as an active element which directly fed through excitation port feeding network. other two parasitic patches coupling element. Good agreements between simulations measurements...
The loss and cost introduced by the feeding network associated components, e.g., T/R modules or phase shifters so on, of a large array antenna are main issue limiting its efficiency applications. A novel idea in order to build sparse periodic patch is presented while keeping similar aperture taking advantage mutual coupling between elements, then total can be obviously decreased. Operating principles carefully addressed based on electric field distributions impedance matrix. Simulations...
To enhance the strength of skin–stringer structures used in aircraft, comparative tests between single and double pass friction stir welding (FSW) were performed. Aluminium alloy was for skin (2524-T3, 1·8 mm) stringer (7150-T77511, 2·4 mm). An equilateral right angled structure used, perfect joints without internal defects obtained. Tensile, peel metallographic also implemented. The results show that average a FSW joint is at least twice from FSW. Therefore, an effective way improving...
This study aimed to investigate the preparation of activated electrolytic manganese residue (AEMR)-slag-cement ternary blended cementitious material and analyze its hydration characteristics, micromechanical properties, carbon emissions. The results revealed that optimal AEMR dosage in was 15%The fluidity S5-AEMR-15 measured at 207 mm, with a compressive strength 44.28 MPa 28 d. Similarly, S15-AEMR15 exhibited 191.5 mm 44.23 alkali-sulfate synergistic excitation system formed by composite...
This study focused on the development of a low carbon cementitious material (LCM) using pretreated electrolytic manganese residue (PEMR), investigating its properties, hydration products, heat, pore structure, leaching toxicity, and emission. Results indicate that mechanical activation process reduced particle size PEMR, while thermal led to dehydration, dehydroxylation, decomposition reactions. Ball milling for 3 h calcination at 700℃ significantly improved pozzolanic activity PEMR. The...
In this study, four-stage countercurrent washing process was used to reduce and recover NH4+ Mn2+ in electrolytic manganese residue (EMR). After that, carbide slag (CS) remove the remaining solidify/stabilize soluble ions water-washed EMR (WEMR). Results showed that removal efficiency of 94.11%, profit 10.56 $/(1 t EMR). treated by CS, black-cake-like WEMR dispersed, leaching concentrations can be reduced below detection limits, Mg2+ concentration from 50.21 mg/L 1.26 mg/L. The main reason...
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Abstract The dc power supply can effectively improve the reliability of output voltage and current through parallel connection, but at same time, there will be an increase in harmonic compared to a single supply. For this problem. In paper, step-down chopper circuit is taken as example analyze under double-pulse width modulation mode. Through calculation experimental verification, it shown that mode used paper realize suppression specific subharmonics.
Electrolytic manganese residue (EMR) is a general industrial solid waste containing (Mn) and other heavy metals that produced in the process of electrolytic metallic manganese, can cause severe environmental pollution. Measures be taken to reduce pollution caused by EMR bring economic benefits through resource utilisation. In this study, leaching efficiency Mn from was improved using Na2SO3 an electric field based on basic characteristics mechanism systematically investigated. The results...
Basic burning raw material (BRM) could successfully solidify/stable electrolytic manganese residue (EMR), though its heavy metals solidification/stabilization (S/S) mechanism and long-term stability remain unclear. Herein, Mn 2+ NH 4 + S/S behavior, hydrated BRM EMR characterization, leaching phase morphology changes for were discussed in detail to clarify these mechanisms. Results showed that concentrations as well pH value respectively 0.02 mg/L, 0.68 mg/L 8.75, meeting the regulations of...