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Influence of pH and ionic strength Fig 2 a displays the influence of pH on the phosphate adsorption behaviour of CGCS Zr4 CGCS Zr4 had good acid resistance and a high adsorption capacity mg g −1 within a broad pH range pH 2 7 The adsorption of phosphate is evidently related to the solution pH with the phosphate adsorption capacity increasing as pH decreased
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Extractive Review Overview Developments in Physical Chemistry and Basic Principles Sohn and Cho sis on the interactions among chemical was investigated by several research VALUE ADDITION 23 25 26 kinetics mass transport and geometric groups Halali and Grieveson ex factors amined the mechanism of the reaction The synthesis of intermetallic com The gaseous reduction of iron
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Abstract Ceramsite materials made from coal ash and modifiers such as sawdust clinoptilolite clay and CaCO3 were prepared by pelletizing and high temperature sintering to improve the adsorption to nitrogen and phosphorus To incorporate Fe/C and Fe/Fe3C microelectrochemical cells materials were also modified by the addition of metallic iron during the preparation process
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This paper studied protective atmosphere furnace used in the thermoforming production line of ultra high strength steel plate simulation and analysis for the key technologies and structure of furnace have been made and two patents formed 1 Research and develop the structure of roller and its ends for heating furnace 2 the heating process of furnace
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Pilot study of high phosphorus oolitic iron ore for iron recovery and dephosphorization by direct reduction magnetic separation WU Shi chao SUN Ti chang KOU Jue LI Xiao hui 2024 44 5 849 856 doi / 439 [FullText HTML] 204 37 Abstract With the development of the steel industry the use of high grade and easy to handle iron ore is
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The presence of various anions in the phosphate solution had no negative effect on the adsorption behaviour of CGCS Zr4 towards phosphate even at very high anion concentrations concentration of 10 mM times higher than that of phosphorus Interestingly the presence of anions actually promoted the adsorption capacity Outer sphere association caused by electrostatic interactions
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Chen Chao Zhang Yushu Zhang Shaoxiang Long Yunbo Institute of Multipurpose Utilization of Mineral Resources Chinese Academy of Geological Sciences Key Laboratory of Vanadium titanium Magnetite Comprehensive Utilization Ministry of Land and Resources Metal Mineral Resources Comprehensive Utilization Technology Research Center China
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An increase of phosphorus in hot metal is mainly related to the use of high P2O5 containing iron ores In the current literature review new trends of phosphorus removal in converter steelmaking are outlined The double slag practice was reported to be successful when hot metal P content was larger than % It was indicated that the tapping temperature was critical for the production of
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Unfortunately phosphorus level in commercially available DRI is relatively high which adversely affects the properties of steel and increases the likelihood of phosphorus contamination In the present study the effect of various fluxing materials such as fluorspar FL red mud RM and white mud WM on dephosphorization reaction between molten steel and EAF slag using DRI at 1 823 K was
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The behavior of phosphorus during reduction and carburization of high phosphorus oolitic hematite with H2 and CH4 Henghui Wang State Key Laboratory of Refractories and Metallurgy Wuhan University of Science and Technology Jian Yang Guangqiang Li Jianghua Ma 48 Room C Continuous Casting Technology 1 Chair Hiroyuki Shibata Tohoku university Wanlin Wang Central South University
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Abstract In order to solve the problem of too high phosphorus content in end liquid steel of converter with high scrap ratio the effects of the conditions of hot metal charging and end point on dephosphorization were studied by combing with the theory of dephosphorization results show that the optimum conditions for
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Minerals Engineering International Hydrometallurgy Jakub Zielinski Marta Huculak Maczka Maciej Kaniewski Dominik Niewes Krystyna Hoffmann Józef Hoffmann Kinetic modelling of cadmium removal from wet phosphoric acid by precipitation method Hydrometallurgy Vol 190 2024 Hossein Shalchian Francesco Ferella Ionela Birloaga Ida De Michelis Francesco Vegliò Recovery of molybdenum
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the study of new technology to improve the permeability of the high sinter bed during sintering the study of new technology to improve the permeability of the high sinter bed during sintering jian pan de qing zhu tie jun chun lin wang shou yan yue jing hua li article doi /2594 357x 22224 p 1299 1305
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In this study pilot scale hybrid constructed wetlands CWs and multistage horizontal subsurface flow CWs HF CWs have been studied and compared for the treatment of raw urban wastewater In the hybrid CWs the first stage was a mulch based horizontal subsurface flow CW and the second stage was a vertical subsurface flow CW VF CW The VF CWs were used to determine if sand could improve the
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Algorithms Models Software and Tools in Bioinformatics Simulation and Analysis of the Network Model of the Quorum Sensing Process during Biofilm Creation Ruixuan Zhao and Mingzhi Mao A Cellular Automaton Model for the Transmission Dynamics of Schistosomiasis Yun Liu Kai Chu Xiaoli Xu Haiwei Wu and Cheng Wan Three Dimensional Numerical Modeling for Wind Driven Circulation and Pollutant
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Micro electrolysis technology expands new ideas for denitrification and dephosphorization in wastewater due to its advantages of cost effective operational simplicity and high efficiency It has been reported Peng et al 2024 that ICME was introduced into the traditional anaerobic/anoxic/oxic process to strengthen the low C/N and C/P sewage treatment
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In this paper the effects of CaO on the phase evolution mechanism of vanadium slag during slagging direct roasting and NH4 2CO3 leaching processes are investigated Results indicate that with the increase in CaO content vanadium is always concentrated as Fe Mn Mg V2O4 in spinels part of titanium is concentrated and transformed into CaTiO3 and phosphorus is concentrated in 3CaO·
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As stated previously the m high benches were blasted out to develop 13 m high benches When blasting the m high benches the only blasting parameter that changed was the blast hole depth
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STUDY ON DEPHOSPHORIZATION TECHNOLOGY FOR HIGH PHOSPHORUS IRON ORE JI Jun Beijing General Research Institute of Mining and Metallurgy Beijing 100044 China
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Water Volume 14 Issue 3 February 1 2024 237 Articles Cover Story Article Monitoring of SARS CoV 2 Variants by Wastewater Based Surveillance as a Sustainable and Pragmatic Approach—A Case Study of Jaipur India Aditi Nag Sudipti Arora Vikky Sinha Ekta Meena Devanshi Sutaria Akhilendra Bhushan Gupta and Krishna Mohan Medicherla Water 2024
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Study on dephosphorization performance of environment friendly dephosphorization slag for high phosphorus hot metal pretreatment YANG Fu BI Xue gong ZHOU Jin dong Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education Wuhan University of Science and Technology Wuhan 430081 Hubei China
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Abstract Bauxite residue is the waste generated during alumina production by Bayer s process The amount of bauxite residue 40 50 wt% generated depends on the quality of bauxite ore used for the processing High alkalinity and high caustic content in bauxite residue causes environmental risk for fertile soil and ground water contamination
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In this study physical chemical and microscopic characteristics of high phosphorus oolitic hematite were investigated firstly Based on which the reduction mechanism of high phosphorus hematite was discussed And the experiments of high phosphorus hematite used in rotary hearth furnace iron nugget processes were studied The results showed
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The acid leaching experiments were conducted to study the effect of acid concentration temperature leaching time solid liquid S/L ratio and the stirring speed on the dephosphorization of the high phosphorus oolitic hematite The results demonstrate that hydrochloric acid is the best selection for leaching acid for the dephosphorization and treatment of the sample in mol/L
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The vaporization of phosphorus during the carbothermal reduction of synthesized model sample demonstrating a high phosphorus iron ore was analyzed by gas mass spectrometry Results revealed that the dephosphorization of fluorapatite was promoted by Al 2 O 3 and SiO 2 to form CaAl 2 O 4 and CaSiO 3 respectively The promotion effect of SiO 2 was larger than that of Al 2 O 3 With the increase
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Abstract Constructed wetland is a kind of environment friendly surface water treatment technology but the traditional constructed wetland with gravel as substrate has weak phosphorus removal capacity Using construction waste as the substrate of constructed wetland can not only reduce the environmental impact of gravel production but also improve the phosphorus removal efficiency This study
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Study on the influence of the spindle system joints on the dynamic characteristics of a spindle system 293 Zhao Li The study of static and dynamic characteristics of hydrostatic rotary tables 299 Zhan Pan Liu Zhao Research on the effect of interference fit in the dynamic characteristics of high speed angular contact ball bearing 305 Guo Ma
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The main purpose of this study is to develop a new nZVI MBC composite material and to explore the morphological characteristics of the material and its ability to remove nitrogen and phosphorus This study aimed to 1 investigate the adsorption capacity of sludge based biochar and different modified biochars for nitrogen and phosphorus 2
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High Temperature Materials and Processes offers an international publication forum for new ideas insights and results related to high temperature materials and processes in science and technology The journal publishes original research papers and short communications addressing topics at the forefront of high temperature materials research including processing of various materials at high
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