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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
Journal of the Korean Institute of Resources Recycling
Journal Basic Information
Journal DOI :
The Korean Institute of Resources Recycling
Editor in Chief :
Volume & Issues
Volume 23, Issue 6 - Dec 2014
Volume 23, Issue 5 - Oct 2014
Volume 23, Issue 4 - Aug 2014
Volume 23, Issue 3 - Jun 2014
Volume 23, Issue 2 - Apr 2014
Volume 23, Issue 1 - Feb 2014
Selecting the target year
Review of Recycling of the Plastic Waste
Shin, Hee-Duck ; Kim, Jong Heon ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 3~11
DOI : 10.7844/kirr.2014.23.4.3
Large scale generation of plastic waste has generated considerable interest it seeking innovative solutions to waste recycling and reuse. Plastic solid waste(PSW) treatment and recycling processes could be allocated to four major categories, re-extrusion(primary), mechanical recycling(secondary), chemical recycling(tertiary) and energy recovery(quaternary). This review considers the various aspects of the PSW recycling such as recycling methods of PSW, special problems about some proposed process, separation techniques, and recycling of mixed PSW.
A Study on the Evaluation of Mechanical Characteristics of Iron Ores
Kim, Jae Myung ; Kim, Chan Wook ; Suk, Han Gil ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 12~20
DOI : 10.7844/kirr.2014.23.4.12
The objective of this study is to investigate the possibility of beneficiation of low grade iron ore. Iron ore A might be upgraded by the mineral liberation effect, while iron ore B was expected to be difficult to upgrade. However, the Fe contents of iron ore B were increased from 68% to 81% by the heat treatment process. Iron ore A was found to possibly enrich the Fe components through the physical separation process, such as magnetic separation, floatation and gravity concentration. In the case of iron ore B, it was possible to concentrate the Fe components through the heat treatment process.
Leaching of Valuable Metals from NCM Cathode Active Materials in Spent Lithium-Ion Battery by Malic acid
Son, Seong Ho ; Kim, Jin Hwa ; Kim, Hyun-Jong ; Kim, Sun Jung ; Lee, Man Seung ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 21~29
DOI : 10.7844/kirr.2014.23.4.21
Nickel, cobalt and manganese-based(NCM,
) cathode active materials of spent lithium-ion batteries contained valuable metals such as cobalt(15 ~ 20%), nickel(25 ~ 30%), manganese(10 ~ 15%) and lithium(5 ~ 10%). It was investigated the eco-friendly leaching process for the recovery of valuable metal from spent lithium-ion battery NCM cathode active materials by DL-malic acid(
) as an organic leachant in this research. The experiments were carried out to optimize the process parameters for the recovery of cobalt, nickel and lithium by varying the concentration of lixivant, reductant concentration, solid/liquid ratio and temperature. The leaching solution was analyzed using ICP-OES(Inductively Coupled Plasma Optic Emission Spectrometer). Cathode active materials of 5 wt. % were introduced into the leaching solution which was 2 M DL-malic acid in addition of 5 vol. %
and it resulted in the recovery of 99.10% cobalt, 99.80% nickel and 99.75% lithium in 120 min.
in DL-malic acid solution acts as an effective reducing agents, which enhance the leaching of metals.
Characterization of Thermo-Plastic Vulcanized (TPV) Composite Prepared by the Waste Tire and Plastic Powder
An, Ju-Young ; Park, Jong-Moon ; Bang, DaeSuk ; Kim, Bong-Suk ; Oh, Myung-Hoon ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 30~36
DOI : 10.7844/kirr.2014.23.4.30
300,000 tons of waste tires are annually being produced with development of the automotive industry in Korea. Landfill and incineration treatment system are causing the economic problem through secondary environmental pollution and waste. Therefore, as one of the ways to take advantage of this, Thermo-Plastic Vulcanized (TPV) composite was prepared by the ground waste tire and plastic powders. The waste tire powder was gained by mechanical fracturing through crushers. The waste tire powder was ground by a shear crushing method and a 2-stage disk mill method instead of cutting crushing one. The waste tire powder of 50 mesh was mixed with Polypropylene(PP) in various proportions. TPVs were prepared by an extrusion, and tensile and impact tests were performed. In addition, the same experiments were repeated in 40, 80, 140 mesh conditions in order to observe size effect of waste tire powders.
Strength Properties of Mortar According to Types of Binders for Reducing Curing Process of Concrete Secondary Products for Reduction CO
Kim, Ha-Seog ; Baek, Dae-Hyun ; Lee, Sea-Hyun ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 37~46
DOI : 10.7844/kirr.2014.23.4.37
Carbon dioxide generated from construction materials and construction material industry among the fields of construction is approximately 67 million tons. It is about 30% of the carbon dioxide generated in the fields of construction. In order to reduce carbon dioxide in the fields of construction, it is necessary to control the use of fossil fuel consumed and decrease carbon emission by reducing the secondary and tertiary curing generating carbon dioxide in construction material industry. Therefore, this study manufactured mortar by having cement as the Plain and substituting three binding materials up to 50% and then adopted different curing methods to analyze congelation and strength characteristics. Test results for strength property by changing binding materials showed that specimens with blast furnace slag, CSA 15% and CAMC 5% resulted in positive effect for strength.
Comparison Analysis of Fiber Distribution and Workability for Amorphous Steel Fiber Reinforced Concrete
Kim, Byoung-Il ; Lee, Sea-Hyun ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 47~57
DOI : 10.7844/kirr.2014.23.4.47
The research was conducted to analyze workability and fiber distributions of amorphous steel fiber reinforced concrete by changing fiber length and fiber addition ratio. The inverted slump cone and vebe tests as well as slump test was performed to understand the fluidity of amorphous steel fibers which have quite different appearance compared to conventional steel fibers. Test results showed that thin plate type of amorphous steel fibers required different test approach to figure out workability since the reduction of workability from slump test was different that from inverted slump cone and vebe tests. In conclusion, fluidity of amorphous steel fibers to concrete was significantly degraded as fiber length and addition ratio increase. Also, fibers space in cement matrix was apparently reduced as the increase of fiber length and addition ratios without fiber balling.
Present Condition of End-of-Life Vehicles & SLF/ASR Recycling in Europe
Baek, Sang-Ho ; Jeon, Ho-Seok ; Lee, Eun-Seon ; Choi, Hee-Kyung ; Kim, Jae-Geung ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 58~68
DOI : 10.7844/kirr.2014.23.4.58
The statistics showed that about 1 billion automobiles were registered and about 40million ELVs occurred on the world in 2010. So all advanced countries including EU had plan to increase the ELVs recycling rate up to 95% of total by 2015. The Korean government also established a target for raising up to 95% of ELVs recycling rate according to `Act on the Resource Circulation of Electrical and Electronic Equipment and Vehicles`. Before being satisfied with the requirement of recycling of ELVs however, the problem is issued on the scraps of plastic and non-ferrous metals which are now being abandoned and reclaimed with no adequate reuse. Therefore, as a part of preceding investigation on the present state of ELVs recycling in the world, this preliminary investigation study was carried out focusing on the state of EU`s disposal and management regulations of ELVs and SLF/ASR including the world trend of disposal and management regulations of ELVs and SLF/ASR.
Survey on the Recycling of Waste Slag Generated by Smelting Reduction of Deep-Sea Manganese Nodules
Park, Hyungkyu ; Nam, Chulwoo ; Kim, Sungdon ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 4, 2014, Pages 69~74
DOI : 10.7844/kirr.2014.23.4.69
Slags generated in the smelting reduction of deep sea manganese nodule could be utilized as an additional materials for making Fe-Si-Mn alloys by mixing with cokes and re-smelting at an arc furnace. In this re-melting process slag is also generated, and the secondary slag is treated as waste. In this survey, recycling of the waste slag of Mn nodule was studied. It is tried to utilize the waste slag as ceramic materials or construction materials. However, it is difficult to use the waste slag directly as an additional material to ceramics such as portland cement or castable refractory material due to the much difference of chemical compositions. As an altercation road constructing material is considered, and toxicity on the soil of the waste slag was tested according to Korean Standard for testing permissible amount of toxic substances. The test result was satisfied with the requirements on the standard. So, it should be suggested that the waste slag of the Mn nodule could be utilized as constructing materials such as road filler or base materials.