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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 7, Issue 5 - Dec 1998
Volume 7, Issue 4 - Sep 1998
Volume 7, Issue 3 - Sep 1998
Volume 7, Issue 2 - Jun 1998
Volume 7, Issue 1 - Mar 1998
Selecting the target year
Properties of Zinc and Lead Hydroxyl Chloride in EAF Dust
Lee, Sung-Oh ; Ko, In-Yong ; Shin, Bang-sup ; Oh, Jae-Hyun ;
Journal of the Korean Institute of Resources Recycling, volume 7, issue 1, 1998, Pages 7~13
The electric arc furnace (EAF) dust used in this experiment showed the formation of an irregular agglomerate of small spherical particles and consisted of 27.5% Fe, 18% Zn, 4.83% Pb and 10.2% CaO, and it also contained 3.26% Cl and 0.15% F. IR spectra peaks of Pb(OH)Cl were observed at 1630 and 1377
regions and the intensity decreased using an acid treatment (1N
) and thermal treatment at above 600℃, but it was not affected by washing process. Those of
treated by oxidation showed broad absorption peak at 3600∼3200
, main peaks at 1136 and 1040
and a splitting peak at 991 and 921
which were believed to be due to ZnO by oxidation at about 700∼. The IR spectra of the dust residues by a washing process show the same peaks at 3449, 1635, 1439, 875, 571 and 455
regions, but the peaks at 2942, 2862, 1136 and 1040
decreased and disappeared using an acid treatment and washing process, which is believed to be due to the dissolution of zinc hydroxyl chloride.
Physicochemical Properties of Unburned Carbon from Fly Ash
Journal of the Korean Institute of Resources Recycling, volume 7, issue 1, 1998, Pages 14~19
Tile pl~ysimchemical properties of residual or unburned carbon obtaincd from fly ash were mestigated. The carbon-enrichcd samples were extracted from fly ash by flotalion mcthod. Tnz carbon content and chemical compos~lion of t b recovered carbon sample were analyzed. The ash in the carbon sample was also examined. The unburned carbon characterization included measurement oE sire distibution, sudace area, crystal shuchlre md density.
Ammonia Removal Characteristics of Artificial Zeolite Pellet Using Multi-Stage Adsorption Column
Journal of the Korean Institute of Resources Recycling, volume 7, issue 1, 1998, Pages 20~26
The mdy is to investigate the capanty and charactoristics of ammonia removal from waste water by artificial zeolite pellet which was synlhesized physicochemically using fly ash. A multi-stage adsorption method was adapted anrl the zeolile pellct as well as two types of natural zeolites are used for adsorption tests of ammonia io order to compare he adsorption capabilities with one anothcr. The expzrimmts was conducted into thrze stages, lhat is early, mddle and last according la the adsorbing stage and lhe number of column used. When camparing the removal efiicicncy in the final stage namral rcolites ratcd 64.5% and 78 5%, while zeohtc pdct rated 80.596, which showed larger amount of ammonia was adsorbed continuously than in other samples. Thc amount of adsorbed ammonia increased rs thc concenlraiion of ammonia increased and tl~e va~iation depending on the pH range showcd that larger amaunt of ammonia tended to be adsorbed m the neutral or akali pH range than in the acid pH range.
Recovery of Nickel from Waste Pickling Solution with Column Extractor
Journal of the Korean Institute of Resources Recycling, volume 7, issue 1, 1998, Pages 27~33
A study on thc recovcry oi nickel from waste pickling solutions removed li-ee nil~ica cid and hydmflnoric acid is carried out with pulsed column extractor for thc industrial application. The ~esults show that thc Iron and chromium arc efteclively elunmatcd from the waste solution by precipitalion as the form of hydraxidc with thc adjustment of pH with CaCO;, whlle the nickel is not prcc~pitatcd. Thc cxlraction eficicncy ol nickel with column cxtraclor generally improves 8s the pulse velosity (product of amplmde and frequency) incrcascs, optimum pcrfarmancc typically occuring slightly below an amplihldefrecluency product which results in flooding the column because of excessive emulsiIicalian And the nickel loaded in the organic is erfeclively conce~~trtratebdy ZM H2S0,, ~ I It he stlipping stage. The solubility of NiSO, in the H,SO, solution dccreaaes w~th thc higher H,SO, concentralion and appears to be 55 grL in the 2M HSO* solulian.
Reduction Rate of Electric Arc Furnace Dust with Solid Carbon
Journal of the Korean Institute of Resources Recycling, volume 7, issue 1, 1998, Pages 34~40
This shdy was invcsligated on reduction rate of EAF dust wth solid carbon cantents. The rate equation for reduction ofEAF dust was obtaincd in the tempcrahlrc range cot 910-108O"C, and the ratio of zinc removal and metallization raho of ironoxides to thc reaction time was also analysed. From the XRD analysis for slag residues '||'&'||'er reaction, the cxistcncc DI themixture of Akemmite[Ca2MgSi2O.] and SiO, was identified.ed.
Recovery Process of Aluminum Coagulant by Acidic Extraction of Residual Sludge Produced in Water Treatment
Journal of the Korean Institute of Resources Recycling, volume 7, issue 1, 1998, Pages 41~49
This papcr covcrs ihe recovery process of aluminum coagulant by acidic exlraclion which can develop the dewaterability'of residual sludge solids and ihc reduclion ot sludge valumc and mass. Simultmeously, variables affecting acidic extaction of aluminum arc discussed It is represented that the characteristics of recovcrcd coagulant is assessed mth rcspcct to aluminum content. coagulalion effeaiveness, and trace contaminants. The treatment methods of residual sludge solid following acidic extraction arc also d~scussed. Fillally, we suggest some cases in which the results from laboratory can he applied to the fullscale operation and future domestic mosoect of it.
Basic Oxygen Furnace Slag as a Liming Agent for Paddy and Upland Field Soils
Journal of the Korean Institute of Resources Recycling, volume 7, issue 1, 1998, Pages 50~56
Basic oxygen furnace @OF) slag. a by-pradud of thc iron and steelmaking industry produced in largc quantities in Korea, poszs a subslantial disposal challenge. The BOF slag used in this study was if3 CaCO, in total n e u ~ ~ pnowger and application of 7-8 Mgha' was needed to bring soil pH to 6.5 horn pH 5.0-5.5 m silly clay or clay loam sod wnlained about 10% orgaoic matter. A field assay was conducted to shldg whether BOP slag could bc used as a dolomitic k i n g agent for agricullural soils. Four slag rates (0, 4, 8, 12 Mgha-')were investigated for their effcfect on soil pmperti~, mineral concentralions in leaf tissues of rice and soybean, and yield of the crops. Slag application at 8 Mgha-' rate in paddy field increased pH, Ca Mg, P, Si and Fe wntenl in sail and rice yield by 4.3-14.25 depending an the soil type. h upland field the 8 Mghaf ratc increa3ed pH, Ca and Fe wntent m soil and soybean yield by 36.6%. Thus, BOF slag appears to be a useful liming mate&\ulcornerl for corrzch~gs oil acidity on both paddy and upland ficld soils and for innwing Ca, Mg, P, Si, and Fe wncenhation in plants.