Zero-waste recycling method for textile dyeing sludge by magnetizing roasting–magnetic separation process and ceramic filter preparation

2020 ◽  
Vol 74 (12) ◽  
pp. 4389-4399
Author(s):  
Qiang Zhao ◽  
Jinchao Wei
Keyword(s):  
Magnetic Separation ◽  
Waste Recycling ◽  
Separation Process ◽  
Ceramic Filter ◽  
Zero Waste ◽  
Textile Dyeing ◽  
Magnetizing Roasting

Beneficiation of Cassiterite and Iron Minerals From a Tin Tailing with Magnetizing Roasting-Magnetic Separation Process

2013 ◽  
Vol 48 (9) ◽  
pp. 1426-1432 ◽  
Author(s):  
Yongcheng Zhou ◽  
Xiong Tong ◽  
Shaoxian Song ◽  
Zhengbin Deng ◽  
Xiao Wang ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Separation Process ◽  
Iron Minerals ◽  
Magnetizing Roasting

Quality Improvement of Recycled Aggregates from a Construction and Demolition Waste Recycling Pilot Plant

2012 ◽  
Vol 730-732 ◽  
pp. 630-635
Author(s):  
D. Algarvio ◽  
Maria Margarida Rolim Augusto Lima ◽  
M.L. Cunha
Keyword(s):  
Quality Improvement ◽  
Magnetic Separation ◽  
Pilot Plant ◽  
Waste Recycling ◽  
Separation Process ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Demolition Waste ◽  
Size Fractions ◽  
Cumulative Curves

The construction and demolition wastes (C&DW) frequently are abandoned in private properties, roads, and landfills or collected by non-licensed companies. In Portugal they are few recycling plants operating with this residue, and this work makes the bridge between the mechanical recycling process developed on semi-industrial scale, and the recycling products characterization process developed on laboratorial scale. The main goal of the present work is the quality improvement of the recycled aggregates produced by a construction and demolition waste recycling pilot plant with 50 ton/h located in Montemor-o-Novo. Process operations are the hammer mill comminution, magnetic separation and sieving (bar sieves: 0-4mm, 4-8mm and 8-12mm; and square sieves: 12-22mm, 22-31mm and above 31mm). In order to improve the magnetic separation process, several tests with different distances between the magnet and the conveyor belt were made (21-31cm). On the other hand, to improve the quality of the produced aggregates, the bar screen size fractions were analyzed, according to the Portuguese Standard (NP EN 933-1 2000). The most efficient distances for the magnetic separation process were identified as between 21 and 27cm, with efficiency between 85% and 90% respectively. According to the histograms, the more frequent red aggregate from 0-4mm size fraction are +0.425-0.850; +0.850-1.7 and +1.7-3.35. From the 4-8mm red aggregates, the more frequent size fractions are +4.75-6.7 and +6.7-9.95. Finally, from the 8-12mm red aggregates, the more frequent new size fractions are +6.7-9.50 and +9.50-13.20. Sieving results obtained from cumulative curves for red aggregate showed an decrease in the mass % amount for the size fractions: 0-4mm: 97%, 4-8mm:76% and 8-12mm: 56%. The results from cumulative curves for grey aggregate showed a light decreased in the amount mass % for the size fractions: 0-4mm: 90%, 4-8mm:56% and 8-12mm: 60%.

The recyclable waste recycling potential towards zero waste cities - A comparison of three cities in China

2021 ◽  
Vol 295 ◽  
pp. 126358
Author(s):  
Binxian Gu ◽  
Xinyi Tang ◽  
Lingxuan Liu ◽  
Yuanyuan Li ◽  
Takeshi Fujiwara ◽  
...  
Keyword(s):  
Waste Recycling ◽  
Zero Waste ◽  
Recycling Potential

scholarly journals Recovery of γ-Fe2O3 from copper ore tailings by magnetization roasting and magnetic separation

2021 ◽  
Vol 19 (1) ◽  
pp. 128-137
Author(s):  
Bing Luo ◽  
Tongjiang Peng ◽  
Hongjuan Sun
Keyword(s):  
Magnetic Separation ◽  
Magnetic Field Intensity ◽  
Sodium Dodecyl ◽  
Separation Process ◽  
Sodium Dodecyl Sulfonate ◽  
Copper Ore ◽  
Yield Rate ◽  
Optimum Parameters ◽  
Roasting Temperature ◽  
Mineralogical Phase

Abstract To comprehensively reuse copper ore tailings, the recovery of γ-Fe2O3 from magnetic roasted slag after sulfur release from copper ore tailings followed by magnetic separation is performed. In this work, after analysis of chemical composition and mineralogical phase composition, the effects of parameters in both magnetization roasting and magnetic separation process with respect to roasting temperature, residence time, airflow, particle size distribution, magnetic field intensity, and the ratio of sodium dodecyl sulfonate to roasted slag were investigated. Under optimum parameters, a great number of γ-Fe2O3 is recycled with a grade of 66.86% and a yield rate of 67.21%. Meanwhile, the microstructure, phase transformation and magnetic property of copper ore tailings, roasted slag, and magnetic concentrate are carried out.

Re-enactment of retrieving lithium ion batteries by sensor ore and magnetic separation process

2020 ◽  
Author(s):  
R. A. Sunmati ◽  
S. V. Tarini ◽  
S. Pooja ◽  
V. Swetha ◽  
S. Thaarini ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Magnetic Separation ◽  
Lithium Ion ◽  
Separation Process

Synergetic utilization of copper slag and ferruginous manganese ore via co-reduction followed by magnetic separation process

2020 ◽  
Vol 250 ◽  
pp. 119462 ◽  
Author(s):  
Deqing Zhu ◽  
Jiwei Xu ◽  
Zhengqi Guo ◽  
Jian Pan ◽  
Siwei Li ◽  
...  
Keyword(s):  
Magnetic Separation ◽  
Copper Slag ◽  
Separation Process ◽  
Manganese Ore ◽  
Co Reduction

scholarly journals Integrated Technological Solutions for Zero Waste Recycling of Printed Circuit Boards (PCBs)

2019 ◽  
pp. 149-169 ◽  
Author(s):  
Giacomo Copani ◽  
Marcello Colledani ◽  
Alessandro Brusaferri ◽  
Antonio Pievatolo ◽  
Eugenio Amendola ◽  
...  
Keyword(s):  
Printed Circuit Boards ◽  
Waste Recycling ◽  
Circuit Boards ◽  
Zero Waste ◽  
Printed Circuit

Experimental Research on the Lean Magnetite of RongTian Mine Corporation by Single Magnetic Process

2013 ◽  
Vol 826 ◽  
pp. 29-33
Author(s):  
Zhong Hang Cheng ◽  
Ke Xu Yu ◽  
Tong Lin Zhao ◽  
Xiao Li Wang
Keyword(s):  
Magnetic Separation ◽  
Experimental Research ◽  
Fine Particles ◽  
Steel Production ◽  
Separation Process ◽  
Experimental Result ◽  
Low Intensity ◽  
Magnetic Process ◽  
Result Analysis ◽  
Ore Grade

In this paper, the mineral properties of the lean magnetite in RongTian mine corporation was studied, during which the analysis of the mineral properties, prelimenary separation on the lump mine, two-section grinding, one section fine screening and three-section low intensity magnetic separation process were carried out. The results showed that if the suitable mineral processing flowsheet is adapted, we can achieved such index:concentrate grade of 63.65%, Fe recovery of 47.12% based on the ore grade of 10.05%.. According to the experimental result analysis, most of the iron minerals could be used to support the steel production of LingGang Group.Single magnetic process proved to be an suitable and promising process to conduct the fine particles of lean magnitite.

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