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Online since: August 2013
Authors: Cheng Bo Wu, Jin Shui Zuo, Zhi Yuan Kang, Jie Lei, You You He
Characterization Of Preparing Cold Bonded Carbon Bearing Pellets Of Metallurgical Dust For Direct Reduction Jinshui ZUO1, Chengbo WU1, Zhiyuan KANG1, Jie LEI1, Youyou HE1 1College of Materials Science and Engineering, Chongqing University, Chongqing 400030, China gtyj007@126.com Keywords: dust, cold bonding, composite pellet, binder, simplex lattice method Abstract: This paper involves the preparation of cold bonded carbon bearing pellets of metallurgical dust for direct reduction using binder.
The experimental data were statistically calculated by Design-Expert (version 8.0.6).
Characterization of preparing cold bonded pellets for direct reduction using an organic binder [J].
Direct Reduction of cold-bonded pellets [M].
Relationship between the Reduction Degree and Strength of DRI Pellets Produced from Iron and Carbon Bearing Wastes Using an RHF Simulator [J].
Online since: January 2026
Authors: Marek Sroka, Hanna Purzyńska, Krzysztof Kwieciński, Karol Sówka, Adam Zieliński
The testing equipment incorporates integrated systems for precision measurement, control, and data acquisition of test temperature, coupled with extensometric measurement and recording capabilities enabling creep evaluation at temperatures up to 1000°C under applied loads up to 6 kN.
Extrapolation of experimental data to 10,000 and 100,000 hour service periods yielded creep rupture strength values for all material conditions.
From the experimental creep data, mathematical parameters were established using Excel functional relationships of the form y=f(x) as demonstrated in Figure 3.
Specimens annealed at 600°C for 3,000 hours exhibited 13% creep rupture life reduction, while 10,000-hour annealing resulted in 17% life reduction.
Accelerated creep experiments without continuous strain measurement provided essential data for quantitative assessment of joint service life reduction.
Online since: April 2013
Authors: Chun Yan Liu
Based on the systematic analysis of the data of 46 coalbed gas samples, this paper discusses the coal metamorphism’s influence on coaled N2 concentration in Mining Area .
In the system and finishing 46 drill coal-bed gas sample data, the author analyzed the Mining area coal seam gas content of N2 changes and causes, discusses the coal metamorphic processes of N2 and CH4 yield relationship.
Fig.1 Ratios of N2/CH4 in the 2nd Coalbed along with Coal Metamorphic Degree in Mining Area In coking coal stage(Romax=1.2-1.7%), thermal ammonification generated N2 gradually increased, CH4 generates a relative reduction in the volume, the increase of N2/CH4.
In coking coal stage, heat ammonification generated N2 gradually increased, CH4 generates a relative reduction in the volume, the increase of N2/CH4.
In the lean coal stage, heat generated by the NH3 ammonification portion in the form of NH4+ in ammonium illite is generated, resulting in production of N2 relative reduction, reduction of N2/CH4.
Online since: April 2007
Authors: Shi Jun Luan, Wan Mei Sui, Ran Ran Song
Preparation and High Temperature Performance of β-Sialon Bonded Corundum Multiphase Material Wanmei Sui, Shijun Luan and Ranran Song Dept. of Physics, Qingdao University, Qingdao, 266071, China Keywords:�Sialon, Oxidation resistance, Thermal-shock resistance, Corundum Abstract. β-Sialon bonded corundum multiphase ceramic refractory was prepared by the method of carbothermal reduction and nitridation reactions of clay mineral doped with corundum particle phase.
Because the properties of W��V material are mainly determined by the characteristics of β-Sialon matrix which can be manufactured with different processes as well as the oxidation and the thermal-shock failure are the main factors limiting their high temperature application [1,2], the present work studied on the oxidation resistance and the thermal-shock resistance behaviors of β-Sialon bonded corundum material prepared by the method of carbothermal reduction and nitridation reactions of kaolin doped with corundum particles.
Experimental Procedure The samples of β-Sialon bounded corundum for the analysis of oxidation resistance and thermal- shock resistance were prepared by carbothermal reduction and nitridation of kaolin and amorphous carbon doped with corundum particle phase in one step synthesis process.
Based on the Ginsterlingger's kinetic equation of diffusion controlling type and the testing data at 1573K, we can got a curve showed in Fig.3, which also indicated that the reaction process could be divided into two reaction phases one is a phase of chemical reaction controlling type in the beginning period of 12hrs and the other is a diffusion controlling reaction phase after the first phase.
Conclusions The β-Sialon bonded corundum multiphase material with excellent high temperature properties was prepared by the method of carbothermal reduction and nitridation reactions of kaolin.
Online since: June 2010
Authors: Yong Qi Guo, Hong Li Zhang
Productive use of water resources Simulations From the 2008 Statistical Yearbook of Xinjiang and data of water resources of Xinjiang from 1999 to 2007. we can see that Xinjiang's annual economic growth rate and the first, second and tertiary industries and the average annual growth rate of water consumption per unit output value of its average annual growth rate of data from 1978 to 2007.
Based on the above data, this paper takes three kinds of hypothetical scenarios simulated in the Xinjiang Production and nature of water resources: water resources without control, the implementation of loose water consumption control, the implementation of strong control of water consumption.
Therefore, Xinjiang oasis should increase water conservation efforts. 4.2 Results of Assumption 2 Based on the above data and equation (5), the use of optimization modeling software lingo8.0, first obtain the optimal industrial structure, the magnitude of change (Table 2), and then get the following simulation results (Table 3).
Accordance with the scenario simulated, Xinjiang oasis will be substantial reduction in water consumption in the next five years (2010-2015), which indicaties in Xinjiang oasis is still in the water consumption of the extensive stage, water-saving potential is still great. 4.3Results of Assumption 3 Based on the above data and equation (5), the use of optimization modeling software lingo8.0, first obtain the optimal industrial structure, the magnitude of change (Table 4), and then get the following simulation results (see Table 5-1, 5-2).
By using DPS(Data Processing System) software to the raw data processing and on the use of standardized scoring method to experts, the impact factor of four weights to determine the economic goals of 0.3516, the industrial structure of 0.1429, the water use efficiency of 0.2028, 0.3026 fot the gross water consumption.
Online since: September 2025
Authors: Voo Qin Gui Roth, Abdul Hannan Yeo, Lakshmi Kanta Bera, Pavan Vudumula, Umesh Chand, Navab Singh, Surasit Chung, Yee Chia Yeo, Yu Chieh Chien
Improvements to the specific on-resistance (Ron,sp) reduction by ~ 30 %, breakdown voltage (BV) enhancement by ~ 40 %, miller plateau (QGD) reduction by ~ 30% is reported.
This helps to streamline fabrication by eliminating several steps involved in hard mask patterning which could lead to significant cost reductions.
Results and Discussion Experimental data on aluminum channeled implantation with an energy of 300 keV and a dose of 1.2×1013 cm-2 along the [0001] crystal direction show a nearly box-shaped profile up to a depth of 2 µm [4].
This reduction is due to 2 µm charge sustaining layer (CSL) with deep JFET implant, resulting in increased electron flow and thus a lower Ron,sp.
Online since: April 2014
Authors: Keith Scott, Hua Cheng
Scott School of Chemical Engineering & Advanced Materials, Newcastle University, NE1 7RU, United Kingdom (* Corresponding author, fax: + 44 0191 222 5292, E-mail: hua.cheng@ncl.ac.uk) Keywords: Rechargeable metal-air batteries, alkali and alkaline earth metal anode, nano-structured air cathode, oxygen reduction reaction, oxygen evolution reaction.
For comparison, data from Li-air and Li-ion batteries are also included.
Such a great potential has attracted tremendous efforts to the development of practical alkali and alkaline earth metal-air batteries, mainly using Na, K and Ca anodes and the cathodes consist of catalysts for O2 reduction, as high-energy-density rechargeable batteries for electric vehicle applications [8-11] Results and discussion Fig. 1 shows the capacity features of alkali and alkaline earth metal batteries.
These data demonstrate the feasibility and the great potential of the alkali and alkaline earth metal -air batteries.
Scott, Selection of oxygen reduction catalysts for rechargeable lithium-air batteries – Metal or oxide?
Online since: July 2015
Authors: Ridwan Ridwan, Marsi Marsi, Dedi Setiabudidaya, Eka Sri Yusmartini, Faizal Faizal
In this research, nanoscale iron particles were synthesized by reduction of Fe2SO4 7 H2O by NaBH4 at low temperature to avoid oxidation during the process.
Nanoscale zero- valent iron particles can be prepared in aqueous solution via reduction of ferric iron (Fe(III)) or ferrous iron (II) with sodium borohydride [4,5].
Results and Discussion In this study, zero-valent iron nanoparticles (6 – 40 nm) have been synthesised by the method of Fe2SO4 reduction using NaBH4 as a reducing agent at low temperature.
Surface area of zero valent iron nanoparticles was analyzed by data isotherm adsorption BET (Brunner Emmet Teller) using Nova instrument based on absorption of adsorbent on N2 gas.
Conclusion Zero-valent iron nanoparticles (6-40 nm) was synthesized by FeSO4.7H2O reduction using NaBH4 as a reducing agent at low temperature and high mixing speed (650 rpm).
Online since: October 2014
Authors: Xing Qi He, Ce Chen
Analysis of the Characteristics and Effects for Sichuan Province Electric Power consumption Chen Ce1, a, He Xingqi2,b 1State Grid Sichuan Nanchong Power Supply Company, China 2State Grid Sichuan Electric Power Company, China achencezi@163.com, bhayes_goodman@hotmail.com Keywords: Power consumption; Energy consumption; Industrial structure; Sichuan Province Abstract: Using data from 2007 to 2011 as the sample, on the base of analyzing the power consumption overall situation of Sichuan Province, the effects of Sichuan electric consumption, energy consumption characteristics factors, increase the proportion of the reasons were studied.
The proportion of power consumption with energy-saving emission reduction and the upgrading of the industrial structure have a trend of increase.
In order to reduce greenhouse gas emissions, implementation of the national energy-saving emission reduction strategy, issued energy-saving emission reduction targets, "three high" limits the development of the industry, regulation and control policy goal is to save energy, reduce energy consumption, reduce pollutant emissions, will reduce the pollution heavy fossil energy production and consumption, to encourage the development of clean energy.
Therefore, under the influence of energy-saving emission reduction policies, power consumption accounted for the proportion of energy consumption is rising.
Three is the development and utilization of water resources in accordance with the national energy-saving emission reduction strategy.
Online since: July 2012
Authors: Gong Liang Wang, Sheng Qiang Song, Zheng Liang Xue, Zhi Chao Chen, Ping Li, Wei Xiang Wang, Rui Ning Liu
Vanadium and its low valence oxides can be obtained through the stepwise reduction of V2O5–VO2–V2O3–VO–V.
So, the volatilization of V2O5 could be depressed better during the reduction process by FeSi.
When the mass ratio of FeSi to V2O5 was 1:1, the relations of V2O5 volatilization loss and reduction temperature were also shown in Fig.1.
When the CaO addition agent was increasing to 36.5%, the V2O5 volatilization rate was 2.1% and the reduction products were 2CaO·V2O5 only.
Beijing: The metallurgical industry press, 2007 (In Chinese) [8] Yingjiao Liang, Yinchang Che: Thermodynamics Data Book of Inorganic Compound.
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