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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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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 1, Issue 1 - Dec 1992
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Characterisitics of the Copper Converter Slag -Recovery of Copper from the Copper Converter Slag(I)-
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 14~22
As a basic study to recover the copper from the copper converter slag, the characterisitcs of converter slag was studied. The results obtained in this work are as follows. 1. The copper converter slag is composed of Cu,
, Fayalite and silicate. 2. It is supposed that magnetite in converter slag is oxidized to hematite at
and this phase is soluted to fayalite. 3. As the converter slag is added in the water solution, pH increased and the heavy metal ions in the water are adsorbed on the slag. 4. Work index of the converter slag cooled for the 10 hour and the 2 hour are 25~27 kWh/ton and 35 kWh/ton, respectively. 5. In the case of grinding test of converter slag, fayalite in converter slag is easily grinded than magnetite in converter slag.
Recovery of Acids and Valuable Metals from Stainless-Steel Pickling Acids
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 23~28
The process for recovery of acids and valuable metals such as nickel and chromium from the stainless-steel pickling acids has been developed vased on the use of solvent extraction technique. Until now, several processes for the treatment of waste acids were already developed in such countries as Japan, Swden and Canada. Those methods are, however, forcussed on the recovery of acids from them discarding the metals included in them as the hydroxides sludge. In the present work, the recovery of nickel and chromium in addition to nitric acid and hydrofluoric acid has been aimed so as to recycle them to the stainless-steel pickling lines and also to minimize the amount of sludge generated during the treatment of waste acids. The establishment of the process to recover the acids has been carried out based on the solvent extraction with TBP. The iron was eliminated from the waste solutions by precipitating in the form of hydroxide through the adjustment of pH with calcined limestone and the selective extration of chromium and nickel from the resultant solutions has been conducted by using D2EHPA as extractant.
A Study on the Leaching of Vanadium and Nickel from Heavy Oil Fly Ash
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 29~36
The extration of vanadium and nickel from heavy oil fly ash was carried out by using water ans sulfuric acid as leaching agent. In the leaching with water, vanadium and nickel were extracted 86% and 88% respectively under pulp density of 25g/l, room temperature and leaching time of 60 minutes, but extraction of vanadium decreased with increasing leaching time. Addition of oxidant decreased the extractions of vanadium and nickel, and roasting of fly ash at temperature higher than
before water leaching decreased the vanadium extraction to about zero. In the leaching with 1N sulfuric acid, the extractions of vanadium and nickel both increased to 96% and the addition of oxidant did not affect the extraction of these metals.
Recovery of Zinc and Lead From Steel Dust by Submerged Injection Smelting Process
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 37~43
The submerged injection smelting process was performed to recover Zn and Pb from steel dust throuth vaporization and to investigate the effect of temperature, slag composition, injection time, gas flow rate, etc. on the recoveries of valuable metals. The results show that vaporation rates of zinc and lead increased at higher temperture and higher moral ratio of ferrous to ferric oxides. In the initial stage of submerged injection of nitrogen gas, the molten slags of the dust have high value of molar ratio of
and hence zinc and lead can be effectively recovered.
Formation of Iron Oxides in a Waste Pickling Liquor
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 44~50
-FeOOH powders were prepared by allkaline and acidic method on the small scale plant from the waste pickling liquor of iron.
powders were examined by TEM, SEM, TG-DTA, X-ray diffraction, VSM and chemical analysis. The results obtained from the experiment could be summerized as follows : the reaction time for the preparation of
-FeOOH was observed to be smaller in the case of alkaline method and the products was acicular with the size of about
. The color of $\alpha-FeOOH and
was lovely yellow and red, respectively. The magnetic properties of
obtained by the reduction of
for 1 hour showed 367(Oe) and 82.7(emu/g).
Hydrochloric Acid Leaching of Arsenic from Arsenic-Bearing Copper Slime.
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 51~57
The hydrochloric acid leaching has been studied as a fundamental experiment on the recovery of arsenic from arsenic-bearing copper slime in copper electrorefining. The slime is mainly composed of
Which is intermetallic compound of CU and As. And the minor components are
and CusAs in the slime. The optimum conditions of leaching of the slime were found to be as follows : 6N hydrochloric acid, particle size passed through 140 mesh, leaching for 150 min at
, ratio of HCI/slime of 3 to 1 ; where 98 percent of arsenic were leached out of the As-bearing slime.
Preparation of High Purity ZnO Powder from zinc-bearing waste by the Hydrometallurgical Process
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 58~68
A process development for direct synthesis of high pure ZnO powders from zinc-bearing waste was investigated. This waste contains a 55% of zinc and it was extracted by the sulfuric acid(leaching). After removal of iron ion by precipitation from the zinc solution, the purification through a solvent extraction by the use of D2EHPA as an extractant was carried out. Then, loaded zinc in organic solution was stripped and precipitated simultaneously using a precipitant such as oxalic acid. Then, loaded zinc in organic solution was stripped and precipitated simulataneously using a precipitant such as oxalic acid. The synthesized
powders by the precipitation stripping method was calcined to obtain more than 99.9% of ZnO powders. The effect of sulfuric acid concentration, leaching time, pulp density on the extraction of zinc was studied and the optimum conditions for the solvent extraction were obtained through the investigation of purification of zinc solution. The size, morphology and size distribution of synthesized
powders were studied in terms of oxalic acid concentration, temperature, surfactant added, precipitation time, etc.
A Basic Study for the Talc Flotation from Hand Picking Tailings of Dong Yang Talc Mine
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 69~77
In this study, a talc flotation was fundamentally carried out with dolomite origin talc ore produced in Dong Yang Talc Mine at Chung-Ju. This ores are mainly composed with talc as a valuable mineral, dolomite as a gangue mineral and other minor minerals of hornblende, tremolite, actinolite, chlorite, calcite, epidote and iron oxide. In order to obtain some of fundamental data for the talc flotation from low grade dolomitic talc tailings which were abandoned -25mm +17 mm size, after the treatment of crude talc ores by screening and hand -picking at the mine, flotation characteristics of the pure talc and dolomite in this ores were first investigated by measuring floatability of the minerals at some experiment conditions. Furthermore, Several times of batch flotations for talc were performed experimentally to recover talc from the low grade dolomitic talc tailings. From the results obtained in this experiment, the conclusions can be summarized as follows ; 1) In the flotation of pure talc, the use of Dowfroth 250 as frother was the most effective in various kinds of frother and the proper addition amount was about 50 mg/
(200g/t) at the condition of this experiment. 2) In the flotation of pure talc, the use of kerosene as collector was not adequate, at the addition over 50mg/l of Dowfroth 250. 3) The adequate pH of pulp ranged from pH6 to pH9 in the talc flotation using Dowfroth 250 as frother. 4) The use of Quebracho as depressant for dolomite was not adequate for the recovery of talc, and more selective depressant was required. 5) In the talc flotation on D sample(dolomitic talc tailing), the suitable number of cleaning time was about 3. 6) At this experimental conditions for the talc flotation on D sample, the talc flotation concentrates of 1. 40% CaO and 84.5 whiteness could be recovered with the talc recovery of about 53%.
철 Scrap의 재활용과 공해 문제
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 78~85
The Recovery of Metals from Secondary Sources
Han, K.N. ;
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 86~93
Scale Preventing Technology by Ultrasonic Vibration
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 94~96
전로에서의 Steel Can Scrap 재활용처리의 현황 및 전망
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 97~100
환경마크제도 적용에 따른 재활용 및 환경개선효과 -재생종이 중심으로-
Journal of the Korean Institute of Resources Recycling, volume 1, issue 1, 1992, Pages 101~107