Search Result
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Keyword : Mineral All : 60
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- 2025 Vol.34, Issue 3 pp. 26-33
- Formulation of Controlled Low Strength Materials Using Cement Industry Chlorine Bypass Dust and Water Washing Residue
- Sun Mok Lee, Ju Chan Jang and Byung Jae Lee
- early hydration activity of portlandite, a primary mineral in WR. Compressive strength measurements at 3, 7, and 28 days of curing revealed that the SC-based mixtures outperformed their OPC counterparts. This enhancement is linked to the latent
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- 2019 Vol.28, Issue 6 pp. 96-105
- Trajectory Simulation of ASR Particles in Induction Electrostatic Separation
- Beom-uk Kim, Chul-hyun Park
- Automobile shredder residue (ASR) is the final waste produced when end-of-life vehicles (ELVs) are shredded. ASR can be separated using mineral-processing operations such as comminution, air classification, magnetic separation, and/or electrostatic
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- 2024 Vol.33, Issue 5 pp. 41-50
- Effects of Synthetic Resin on Characteristics of Cement Clinker
- Jeong Hwan Bang, Young Jun Lee, Do Young Kwon and Yong Sik Chu
- - - - - 0.20 Al2O3 0.04 - 99.5 - 0.23 - 0.20 Fe2O3 - - - 99.5 - 0.16 0.16 Table 6. Mixing ratio of raw mix and mineral contents of clinker Raw Mix Clinker Reagent Mixing ratio (wt.%) Mineral Content (wt.%) CaCO3 78.88 Alite 57.07 SiO2 15.07 Belit...
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- 2025 Vol.34, Issue 6 pp. 70-81
- Experimental Study on Flotation-Chemical Purification for High-Purity Graphite Production from Domestic Natural Graphite Ore
- Serin Kang, Jaemin Ahn, Donghyun Kim, Seongmin Kim, Seongsoo Han, Wonjae Lee, Seungwook Shin, Ki Min Roh, Haesung Jeong and Yosep Han
- 으로 탄소함량을 비교하였을 때 상대적으로 낮지 않은 고정탄소 함량을 가지는 것으로 나타났다. 채취한 시료의 광종 분포를 확인하고자 XRD를 수행하였으며, 결과를 Fig. 2 (a) XRD pattern and (b) mineral phase composition of the natural graphite ore used in this study, showing that quartz accounts for the largest fractio...
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- 2023 Vol.32, Issue 5 pp. 35-43
- Characteristics of Cement Raw Mix and Clinker used Non-Carbonated Materials
- Young Jun Lee, Woo Sung Yum, Sung Kwan Seo and Yong Sik Chu
- 에 기여하지 못하기 때문으로 추정되었다. 또는 고로 괴재 슬래그 사용 클링커에서 생성된 광물 결정성이 상대적으로 불량하기 때문일 수도 있다. 이와 같은 C3S 피크 강도 감소 결과는 ‘3.1 혼합원료 배합설계’ 중 Fig. 3. XRD patterns of clinkers used BF Slag. Table 5. XRD peak intensity of C3S mineral (≒32.1°) Contents 0% 3% 6% 9% 12% Ref. 3
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- 2020 Vol.29, Issue 1 pp. 17-24
- Strategy to Recover Rare Earth Elements from a Low Grade Resource via a Chemical Decomposition Method
- Rina Kim, Heechan Cho, Jinan Jeong, Jihye Kim and Sugyeong Lee
In this study, rare earth elements (REE) leaching from a refractory REE ore containing goethite as a major gangue mineral was conducted, introducing a two-stage method of chemical decomposition-acid leaching. At the chemical decomposition step
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- 2021 Vol.30, Issue 1 pp. 92-101
- Waste and Recycling Status of Europe, Japan and USA
- Sang-hun LEE and Kyoungkeun YOO
- consumption in EU by countries ((a) more than and (b) less than 23 million ton). Fig. 2 Waste in EU by countries ((a) more than and (b) less than 30 million ton). 광산폐기물을 제외한 EU 각 국의 폐기물 발생량을 Fig. 3 Waste excluding major mineral waste in EU by cou...
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- 2022 Vol.31, Issue 1 pp. 65-77
- Leaching Behavior of Vanadium and Possibility of Recovery of Valuable Metals from VTM Concentrate by Sulfuric Acid Leaching
- Sung-Ho Joo, Dong Ju Shin, Dongseok Lee, Jin-Tae Park, Hoseok Jeon and Shun Myung Shin
- from: Mineral Facts and Problems, 1985, pp. 895 – 914.). 반면 국내의 경우 1990년대부터 바나듐 함유 광상을 확인하고 바나듐 연구가 지속적으로 진행되어 왔으며 최근 연천지역에서 티탄철석 광산에 부존되어 있는 자철광에 바나듐이 부존되어 있는 것을 확인하였다. 따라서 국내 바나듐 함유 티탄철석으로부터 V2O5 및 바나듐 회수공정 개발연구가 활발히 진행되고 있으나 직접 산 침출법에 의한 바나듐 함...
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