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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
Economic Assessment of the Heat Recovery from Incineration Plants Based on Regression Analysis
Yoon, Jungmin ; Son, Hyeongmin ; Park, Dong Yoon ; Chang, Seongju ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 3~12
DOI : 10.7844/kirr.2014.23.3.3
This study aims at providing an economic assessment for incineration plants which recover heat during its incineration process. In this study, Life Cycle Cost(LCC) of incineration plants is performed based on each regression analysis formula for construction cost, operation cost, and heat generation in order to compare economic feasibility. The result shows that the incineration plant recovering waste heat while processing 80 tons of waste per day increases both initial investment and operation cost but this type of an incineration plant has economical predominance from the recovered waste heat over the one that does not recover heat when being operated for more than eleven years if the retrieved heat replaces the use of LNG. And its payback time reaches more than 19 years in case of selling heat and performing emission trading.
Evaluation on the Properties of Ternary blended Cement Concrete using Industrial Byproducts
Kim, Chun Ho ; Kim, Nam Wook ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 13~20
DOI : 10.7844/kirr.2014.23.3.13
Nowadays, due to the development of industrial and civil engineering technology, enlargement and diversification of concrete structures are being tried. At the same time, the hydration heat generated during the construction of large structures lead to thermal crack, which is occurs causing a problem that durability degradation. In this paper, in order to study the durability and reducing hydration heat of concrete according to the types of cement, that is ordinary portland cement, fly ash cement mixed with a two-component, ternary blend cement mixed with fly ash and blast furnace slag and low heat cement concrete are produced, and compare and analyze the results using property, durability and hydration characteristics, ternary blend cement is appeared to be the most excellent in durability and reduction of hydration heat, and it was determined suitable for construction of mass concrete and requiring durability.
Study on the Precipitation of Magnesium Hydroxide from Brine
Seo, Bong Won ; Song, Young-Jun ; Lee, Gye Seung ; Shin, Kang Ho ; Jang, Yoon Ho ; Kim, Youn-Che ; Yoon, Si-Nae ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 21~29
DOI : 10.7844/kirr.2014.23.3.21
This study was conducted to obtain the basic data for designing the lithium recovery process from the "salar de Uyuni" in Bolivia. For this study, the mock brine which has the similar chemical composition with the brine of "salar de Uyuni" was prepared, and the effects of reaction factors such as temperature, time, pH and so forth on the precitation reaction of magnesium hydroxide were investigated.
Upgrading of Iron from Waste Copper Slag by A Physico-chemical Separation Process
Lee, Kwang-Seok ; Jo, Seul-Ki ; Shin, Doyun ; Jeong, Soo-Bock ; Lee, Jae-Chun ; Kim, Byung-Su ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 30~36
DOI : 10.7844/kirr.2014.23.3.30
A large amount of waste copper slag containing about 35 ~ 45% iron has been generated and discarded every year from pyrometallurgical processes for producing copper from copper concentrate. Thus, recovery of iron from the waste copper slag is of great interest for comprehensive use of mineral resource and reduction of environment problems. In this study, a physico-chemical separation process for upgrading iron from the waste copper slag discharged as an industrial waste has been developed. The process first crushes the waste copper slag below 1 mm (first crushing step), followed by carbon reduction at
for 90 min (carbon reduction step). And then, resulting material is again crushed to
(second crushing step), followed by wet magnetic separation (wet magnetic separation step). Using the developed process, a magnetic product containing more than 66 wt.% iron was obtained from the magnetic separation under a magnetic field strength of 0.2 T for the waste copper slag treated by the reduction reaction. At the same conditions, the percentage recovery of iron was over 72%. The iron rich magnetic product obtained should be used as a iron resource for making pig iron.
Recovery of Tin and Copper from Waste Solder Stripper by Oxalate Precipitation
Ryu, Seong-Hyung ; Ahn, Jae-Woo ; Ahn, Hyo-Jin ; Kim, Tae-Young ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 37~43
DOI : 10.7844/kirr.2014.23.3.37
A study has been made on the recovery of tin and copper from waste solder stripper by oxalate precipitation. With the increasing of the oxalic acid addition, tin was precipitated effectively and removed above 99.5% of tin when the oxalic acid, in an amount 1.0-1.5 times the stoichometric requirement, was added. But, in this case, only 2.0% of copper was precipitated and lead, iron were not precipitated. So, tin was selectively removed from the waste solution. With the increasing of the reaction temperature, the removal percentage of tin was increased and maximum value at arounf
and decreased with increase in the temperature any more. After filtering the precipitate and drying in oven,
was obtained from the precipitate. After removal of tin in stripping solution, above 91% of copper was selectively removed by Cu-oxalate by addition of oxalic acid.
Characteristics Studies of Waste Tire Rubber Powders using the Different Grinding Methods
Park, Jong-Moon ; An, Ju-Young ; Bang, Daesuk ; Kim, Bong-Seok ; Oh, Myung-Hoon ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 44~50
DOI : 10.7844/kirr.2014.23.3.44
In this study, a method of shear crushing and a two-stage disk mill were introduced to grind the waste tire powder. Rubber chips with various size were obtained during the crushing or grinding step. The two-stage disk mill was composed of two drum-type blades rotating at various speed and in opposite directions. Therefore, more roughly surfaced particles of micronized waste tire powder were obtained using shear crushing rather than using conventional cutting crushing. In this study, the shape of shear-crushed waste tire particles was compared with conventional cutting crushing particles by scanning electron microscope. In addition, the particle size analyzer was employed to determine the appropriate particle size of waste ground tire powders obtained in this study.
Analysis of Structure in the Domestic Supply & Demand of the Raw Materials of Rare Metals
Kim, Yu Jeong ; Lee, Hwa Suk ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 51~60
DOI : 10.7844/kirr.2014.23.3.51
In this study, the domestic supply & demand of the raw materials of 35 rare metals was analyzed categorized as four types - ores, metals, compounds and scraps. Foreign trade volumes of the raw materials of rare metals have been steadily increased, furthermore, recently trade growth rate highly exceeds GDP. The raw materials of rare metals - silicon, nickel, molybdenum, manganese, etc. - for steel industry were the most big part of the raw materials of rare metals trade, while the raw materials of rare metals for electronics industry were imported relatively small volumes less than $100 million. However systematic supply & demand management on the raw materials of rare metals for electronics industry is needed since recently growth rate per year has been remarkably high over 20%. Import volumes were about three times bigger than export scale, and most of the raw materials of rare metals were traded as a metal form.
Trend on Recycling Technologies of Tin Scrap by Material Flows and Patent Analysis
Kim, Yong Hwan ; Son, Seong Ho ; Choi, Han Shin ; Han, Chul Woong ; Kim, Tae Bum ; Ahn, Jae Woo ; Kim, Hong In ; Lee, Ki Woong ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 61~70
DOI : 10.7844/kirr.2014.23.3.61
Tin has been widely used to solder, tin plated steel, bronze alloy, sputtering target for transparent electrode and chemical additives. It has been widely reported to the recycling technologies for tin scraps because of the scarcity and economic efficiency of the reserve. This study was analyzed by using open/registered patents KR, US, CN, JP and EP related to recycling technologies for processing scrap, sludges, waste fluid for plating process and spent alloy containing tin in between 1970 and 2013. Patents were collected using key-words searching and filtered by filtering criteria. The trends of the patents were analyzed by year, country, appliant and technology.
Trend on the Recycling Technologies for Recycling of Insoluble/infusible Plastic Wastes using Supercritical Fluids by the Patent and Paper Analysis
Hong, Soon-Man ; Koo, Chong Min ; Cho, Young-Ju ; Cho, Bong-Gyoo ;
Journal of the Korean Institute of Resources Recycling, volume 23, issue 3, 2014, Pages 71~77
DOI : 10.7844/kirr.2014.23.3.71
It is believed to have the international competitiveness of the domestic petrochemical in conjunction with the production of high value-added new product and variety of application by supercritical fluid process and the reaction of infusible/insoluble plastic wastes recycling. In this article, the patents and papers for the recycling of organic residues from the plastic wastes using supercritical fluids were collected and analyzed. The open patents of USA (US), European Union (EP), Japan (JP), and Korea (KR) and SCI journals from 1993 to 2012 were investigated. The patents and journals were collected using key-words and filtered by the definition of the technology. The patents and journals were analyzed by the years, countries, companies, and technologies and the technical trends were discussed in this paper.