13th Symposium on Green and Sustainable Technologies for Materials Manufacturing and Processing: Poster Session
Sponsored by: ACerS Engineering Ceramics Division
Program Organizers: Surojit Gupta, University of North Dakota; Rajiv Asthana, University of Wisconsin; Hisayuki Suematsu, Nagaoka University of Technology; Mritunjay Singh, Ohio Aerospace Institute; Enrico Bernardo, University of Padova; Yiquan Wu, Alfred University; Zhengyi Fu, Wuhan University of Technology; Allen Apblett, Oklahoma State University; Tatsuki Ohji, National Institute of Advanced Industrial Science and Technology
Tuesday 12:00 PM
October 19, 2021
Room: Exhibit Hall B
Location: Greater Columbus Convention Center
P2-20: Biomass Derived SiO2: Different Waste Resources and Extraction Methods: Damandeep Kaur1; O.P. Pandey1; M.S. Reddy1; 1Thapar Institute of Engineering & Technology
In the recent scenario, when the world economy is falling due to the spreading of the coronavirus, three R’s – Reduce, Recycle and Reuse are very important factors. In this context, waste management and their conversion in value-added products is a key feature to implement the three R’s formula. To achieve the goal of sustainable development, biomass is considered an alternative source for non-renewable. In the present report, two different agriculture wastes are used for the extraction of SiO2. Rice husk (RH) and Rice straw (RS) are taken as precursors for SiO2 production. Further, two different extraction methods including chemical and biological routes are employed to extract SiO2. The obtained SiO2 was characterized by various experimental techniques like X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and Fourier transform infrared spectroscopy.
Poster
P2-21: Effect of Steam Injection on Reduction of Dioxin Emission from the Commercial-scale Sintering Plant: Zhengyun Fan1; Wen Pan1; Shiqi Zhao1; 1Shougang Research Institute of Technology
In this article, the effect of steam injection on the reduction of dioxin emission was studied in a commercial sintering plant of Shougang Group. Some conclusions could be obtained: 1)When the flow rate of steam is 3.5t/h, the PCDFs and PCDDs emission could be reduced by 54.9%. In these congeners, PCDFs and PCDDs are reduced by 57.33% and 41.65%, respectively. Steam injection can reduce the dioxin emission, especially for those higher chlorinated species in the PCDF group. 2) With the increase of the amount of steam, the PCDFs and PCDDs emission could be reduced remarkably. when the flow rate of steam is 4.5t/h, the reduction magnitude is 65%, in which, PCDFS accounts for 69.5% ,while PCDDS takes accounts of 40.9%. 3) When the steam injection area is less than 198 m2 , the reduction of PCDFs and PCDDs emission is not remarkable.
Poster
P2-22: Metallurgical Quality Analysis of High Nb TiAl Alloy Cast Ingot Prepared by BaZrO3 Crucible: Xuexian Zhang1; Guangyao Chen1; Bao Hua Duan1; Yuchen Yang1; 1Shanghai University
In this paper, a new type of BaZrO3 refractory and high Nb TiAl alloy were prepared by vacuum induction melting. The shrinkage area, microstructure, microsegregation, microstructure uniformity and mechanical properties of the alloy at different refining temperatures were systematically studied by metallographic microscope, scanning electron microscope, ICP-AES and tensile test. The results show that the ingot with small concentrated shrinkage area and no crack can be obtained by controlling the refining temperature. The results show that the high Nb TiAl alloy prepared by vacuum induction melting with BaZrO3 crucible has good microstructure uniformity, and the macro segregation difference of Al and Nb elements is not more than 1.7% and 1% respectively. The yield strength of the alloy can reach 460Mpa, and its fracture morphology shows that it is brittle fracture.
Poster
P2-23: Optimization of the Ratio of Air and Fuel in Ignition Chamber of Sintering Machine: Yapeng Zhang1; Wen Pan1; Jingjun Zhao2; Shaoguo Chen1; Huaiying Ma1; Zhixing Zhao1; 1Research Institute of Iron & Steel, Shougang Group Co., LTD Research Institute of Technology; 2Ironmaking Department, Shougang Jingtang United Iron &Steel Co.,Ltd
The concept of heating strength of sintering surface is introduced, which is used as the evaluation standard of sintering ignition effect. At the same time, ignition system in Shougang Jingtang sintering machine (550 m2) was studied and analyzed. The results showed that: when the gas flow was stable, duration of high temperature (above 1000 ℃) of the sintering bed surface prolonged with the increase of air-fuel ratio, the highest temperature also rose, which means that the heating intensity of sintering bed increased and the ignition effect improved; By increasing the air-fuel ratio, the coke oven gas consumption decreased by 247 Nm3/h, and the sinter quality index remained stable in Shougang Jingtang Company.
Poster
P2-24: Research on West Pilbara Fines (WPF) Utilization under Deep Bed Sintering: Wen Pan1; Shaoguo Chen1; Yapeng Zhang1; 1Research Institute of Iron & Steel, Shougang Group Co., LTD Research Institute of Technology
Under the condition of high concentrate ratio and deep bed sintering，fundamental sintering properties of iron ore fines and pot tests were conducted to find reasonable WPF proportion and iron ore matching. Pollutant emissions were also concerned during sintering. The key findings are summarized as follows: Under the conditions of 750mm bed height, WPF replacing 20% PB and 10% MAC (or 30% Brazilian Blend Fines (BRBF)), achieved the better RDI, TI, size, yield, productivity and other quality indicators. the sinter obtained. At 900m bed height and 4.6% coke rate was equivalent to that obtained at 750mm bed height and 5% coke rate in terms of yield, RDI and other quality indicators. At the same time, the solid fuel consumption of sintering was reduced by 3.5kg/t, and the emission of NO and SO2 per ton of sinter was reduced by 24% and 35% respectively.
Poster
P2-25: Reform and Practice of Energy Saving and Consumption Reduction Technology of 500 t/d Beckenbach Annular Lime Kiln: Yapeng Zhang1; Wen Pan2; Zhenping Miao1; Shaoguo Chen2; Huaiying Ma2; Zhixing Zhao2; 1Shougang Group; 2Research Institute of Iron & Steel, Shougang Group Co., LTD Research Institute of Technology
The ejector system of annular lime kiln was reformed to energy saving and pollution reduction. Under the principle of high wind pressure and high wind speed, the driving wind system was improved to achieve ejector pressure and strong siphon effect. The technical transformation has broken the traditional cognition that two driving fans must be applied to produce at full load in the industry, and realizing that a single fan can meet the full load production, thus reducing the power consumption and fuel consumption, and increasing the output of quicklime. After renovation works, 125m3/h of coke oven gas and 250m3/h of converter gas were saved. The temperature of the combustion chamber increased for 20℃ after modification.
Poster
P2-26: Study on Application of King Ore Fines in Sintering Process of Shougang Jingtang Plant: Shaoguo Chen1; Wen Pan1; Yapeng Zhang1; Xiaochen Zhang1; Bin Ji1; Zhixing Zhao1; 1Shougang Research Institute of Technology
For King ore fines from FMG in Australia，its analysis of chemical composition and mean size, basic property tests of high temperature, pot tests and industrial application were conducted. The results show that FMG King fines belongs to a type of high burning-loss limonite as same as Yanddi fines from BHP, the chemical composition and mean size of both are similar, King fines of the assimilation and liquid fluidity performance are not as good as Yandi fines of that, large proportion replacement of Yandi fines can decrease solid fuel consumption in pot tests. In industrial application, it is feasible to replace 5% Yandi fines with King ,which is beneficial to improve grain size composition of sinters.