Characterization of Minerals, Metals and Materials 2022: Metallurgical Processing Analysis and Characterization
Sponsored by: TMS Extraction and Processing Division, TMS: Materials Characterization Committee
Program Organizers: Mingming Zhang, Baowu Ouyeel Co. Ltd; Jian Li, CanmetMATERIALS; Bowen Li, Michigan Technological University; Sergio Monteiro, Instituto Militar de Engenharia; Shadia Ikhmayies; Yunus Kalay, Middle East Technical University; Jiann-Yang Hwang, Michigan Technological University; Juan Escobedo-Diaz, University of New South Wales; John Carpenter, Los Alamos National Laboratory; Andrew Brown, Devcom Arl Army Research Office; Rajiv Soman, Eurofins EAG Materials Science LLC; Zhiwei Peng, Central South University

Wednesday 8:30 AM
March 2, 2022
Room: 207B
Location: Anaheim Convention Center

Session Chair: Rajiv Soman, AnalytiChem Group, USA; Arul Kumar Mariyappan, Los Alamos National Laboratory


8:30 AM Introductory Comments

8:35 AM  
Investigation of MRO Clusters in Molten Marginal Metallic Glasses: Can Okuyucu1; Doguhan Sariturk1; İlkay Kalay2; Yunus Kalay1; 1Middle East Technical University; 2Çankaya University
    Partial devitrification of the Al-RE marginal metallic glasses results in anomalous nucleation rate of nanocrystals disagreeing with the classical nucleation theory by several orders of magnitude. One of the theoretical approaches explaining this phenomenon is the medium-range order (MRO) structures present both in the quenched amorphous state and its liquid precursor. The MRO in marginal metallic glasses (also for covalent silicate glasses) is often associated with a pre-peak present in the diffraction pattern. In this regard, we used synchrotron-based high-temperature in-situ HEXRD experiments to monitor the characteristics of pre-peak and side-peak in molten Al-Sm alloys within the glass formation range. The formation of pre-peak in liquid is associated with the pseudo-crystalline Al11Sm3 fragments. The formation of Al11Sm3 like MRO clusters and the corresponding evolution of pre-peak in the diffraction pattern during in-situ melting of Al-Sm metallic glass will be discussed in detail.

8:55 AM  Cancelled
Study on the Degradation Behavior of Organic Humic Acid from the Wastewater by Refractory High-titanium Slag after Metallurgical Transformation: Yubi Wang1; Bingbing Liu1; Shengpeng Su1; Guihong Han1; Yanfang Huang1; 1Zhengzhou University
    Vanadium-titanium magnetite and ilmenite are recognized as one type of the most refractory mineral resources. Conventional carbothermal reduction smelting to extract Fe and Ti from vanadium-titanium magnetite and ilmenite is based on the natural resource attribute. After reduction smelting, abundant refractory high-titanium slag was obtained. In this work, according to the environmental material attribute, an alternative utilization for degradation of organic humic acid from the wastewater by high titanium slag after metallurgical transformation was conducted via the ultraviolet absorption and degradation experiments. After metallurgical transformation at 1200oC for 120 min, the high-titanium slag was transformed to titanate with spinel-type structure and photocatalytic property in the manganese titanates. The degradation efficiency of humic by the manganese titanate was over 48% as the fine-grained manganese titanate was with a dosage of 1.5g/L and humic acid concentration was 10mg/L. This work provided a high-value treatment of high-titanium slag for environmental remediation.

9:15 AM  
Study on Efficient Burdening for Preparation of Fused Calcium Magnesium Phosphate Fertilizer from Low-grade Phosphate Ores: Tingting Wang1; Luyi Li1; Cuihong Hou1; Haobin Wang1; Shouyu Gu1; Jie Wang1; 1Zhengzhou University
    Acidification and trace elements lack of soil deteriorate the healthy planting of crops in China. One effective approach to relieve the soil acidification and infertility is to use alkaline fused calcium magnesium phosphate fertilizer (FMP). As a carrier of many micronutrients, low-grade phosphate ores was used as the raw materials to prepare the alkaline FMP in this work. An efficient burdening for preparation of FMP based on the glass structure factors (Ob/Yb) was briefly introduced, and then the fusion characteristic of the low-grade phosphate ores with various Ob/Yb values was characterized. Melting experiments show that the increase of melting temperature and time can dramatically enhance the effective conversion of nutrients elements in phosphate ores. After melting at 1450℃ for 10 min with Ob/Yb of 3.06, 94.87% P2O5, 91.68% CaO, 93.69% MgO and 92.46% SiO2 are activated in the alkaline FMP, which can be readily absorbed by the crop root system.

9:35 AM  
Charactesrization of Nano-crystalline Metallurgical-grade Silicon Prepared from Rice Husk Ash: Benedict Ayomanor1; Cookey Iyen2; Ifeoma Iyen2; Vitalis Mbah1; Daniel Anyaogu1; Daniel Dawuk1; Sunday Anikoh1; Matthew Omonokhua1; Suleiman Ndiriza1; 1Federal Polytechnic Nasarawa; 2Federal University Wukari, Nigeria.
    Rice husk (RH), an agricultural waste product, contains a large proportion of silicate minerals, making it a potential source of low-cost metallurgical grade silicon (MG-Si) suitable as a solar-grade silicon material. In this work, silica of between 95.24% and 98.03% has been prepared from RH ash (annealed at 700oC, 800oC, 900oC and 1000oC for 6 hours). Furthermore, the silica value was boosted by use of hydrometallurgical purification process. The improved purification processes yielded between 99.18% and 99.51% of silica. The metallic trace impurities were significantly reduced beyond detection of the XRF after the final processing step. Metallothermic reduction of pulverized Mg and SiO2 mixture at ratio 1:1 gram was post hydrometallurgical purified further. XRF showed silicon powder with purity > 98% and the XRD showed RHA transformation from amorphous to crystalline material. TEM investigation shows that derived silicon consist of agglomerate polycrystalline materials with grain sizes of 20-67.08nm

9:55 AM Break

10:10 AM  
Characteristics of Placer Gold from Glacial Sediment: Bowen Li1; 1Michigan Technological University
    The glacial sediments and river sediments from Tintina Trench in Yukon, Canada were investigated. The sediments in the area showed complex mineralogical, petrological, and geochemical characteristics, and a various sedimental structure. The gold component was found that existing in a liberate state away from rock particles and with a particle size of 0.5-150 microns. All the recovered gold particles are flake-like with traits of mechanically flatten. The fine particles even are floatable on water surface. These characteristics of the placer gold are benefitable but also challengeable to the recovery process of gold.

10:30 AM  
Chemical Analysis of Mineral Surfaces Using Digital Image Processing: Mizraim Flores1; Juan Gonzalez1; Abdon Aparicio1; Gildardo Godínez1; Karime González2; 1Universidad Tecnológica de Tulancingo; 2Instituto Tecnológico de Saltillo
    Quantitative and qualitative chemical analyses are of great importance in the characterization of materials and in mineralogy, in order to determine the content of elements present in minerals; the equipment used for this kind of analysis is very expensive and sophisticated. Image segmentation can provide a semi-quantitative analysis of the elemental content of the mineral surface. In the present work, the semi-quantitative analysis of fluorite was carried out using Atomic Absorption Spectrophotometry, X-ray dispersive energy spectrometry and the comparison with image segmentation was made, matching the percentages of calcium and fluorine in the three methods. The analysis of the images was based on the intensity of the colors to determine the content of each element present in the mineral, subsequently the method of functional approximation and interpolation was used so that it can be an economic form, precise and easy to use for determining semi-quantitative composition of mineral surfaces.