Results 131 to 140 of about 200,542 (260)

Recent Advances in Boron Removal From Geothermal Waters: A Review

open access: yesWater and Environment Journal, EarlyView.
This review provides a comprehensive overview of boron removal technologies from geothermal fluids and highlights the limitations of conventional treatment methods. Ion exchange, hybrid processes and membrane filtration are identified as the most dominant approaches in recent studies.
Saadet Acar Can, Hasan Koseoglu
wiley   +1 more source

Pilot Production of 25 t VOD-LF Silicon Deoxidation Refining Process for Stainless Steel 20Cr13

open access: yesTeshugang, 2019
The production flowsheet of test stainless steel 20Crl3 (/% : 0.20C, 0.37Si, 0.54Mn, 0.030P, 0.002S, 12.22Cr, 0.007Al) is 25 t EAF-VOD-LF-ingot casting.
尚大军
doaj  

Development of high performance concrete using combinations of mineral admixtures. [PDF]

open access: yes, 1995
Cement replacement materials are by-products used to produce high performance concrete. Published data on the effects of combinations of mineral admixtures in concrete on the microstructural and performance-related properties under different ...
Darwish, Abdulhanan A., Darwish, A.
core  

Remineralisation of Reverse Osmosis (RO) Water Using Synthetic Aragonite

open access: yesWater and Environment Journal, EarlyView.
ABSTRACT Reverse osmosis (RO) treated water often requires remineralisation to restore Ca2+ ions, hardness and alkalinity, particularly for potable water. This study compares the dissolution characteristics of two forms of calcium carbonate, aragonite and calcite.
Yuqing Wu   +3 more
wiley   +1 more source

Assessing Distinctive Physiochemical Properties of Geopolymers, Their Green Development and Utilization in Wastewater Treatment

open access: yesWater and Environment Journal, EarlyView.
This review examines the physicochemical properties of geopolymers, focusing on the effects of calcium content, heavy metal impurities and acid activation. It distinguishes geopolymers from other alkali‐activated materials based on structure and synthesis precursors. Their use as water treatment adsorbents is compared with ceramic filters, highlighting
Kabelo L. Lebogang   +3 more
wiley   +1 more source

Controlling Technology on Oxygen Content in Gear Steel Produced by 120 t LD-LF-RH-BCC Flow Sheet

open access: yesTeshugang, 2010
The key technology for controlling the oxygen content in gear steel is analyzed including SiO2content in refining slag, (CaO)/( A12O3) , (FeO + MnO) , RH, Ar stirring and concasting process.
陈天明   +4 more
doaj  

Effect of 100 t LF Refining Slag Basicity and Al2O3 Content on Modification and Removal of Inclusions in Steel 65 Mn

open access: yesTeshugang, 2017
With 100 t LF original refining end slag (/% : 53. 8CaO, 8. 16MgO, 16. 6SiO2, 17. 45Al2O31. 44TFe, 1. 26S, ZG. 08) to improved refining end slag (/% : 51.3CaO, 6. 36MgO, 25. 0SiO26. 73Al2O32. 96TFe, 0. 76S, R2.
刘辉杰   +4 more
doaj  

Precipitation phase and impurities distribution of metallurgical grade silicon by vacuum refining followed slag treatment

open access: yes, 2013
Conference Name:2nd International Conference on Metallurgy Technology and Materials, ICMTM 2013. Conference Address: Hong Kong, China. Time:June 25, 2013 - June 26, 2013.Precipitation phase and impurities distribution of MG-silicon were investigated by ...
Li, Jin Tang   +10 more
core  

Scaling‐Up Vanadium Redox Flow Batteries: From Lab‐Scale Flow Cells to Application Stacks

open access: yesAdvanced Chemical Engineering, Volume 1, Issue 2, December 2026.
The transition of vanadium redox flow batteries (VRFBs) from laboratory cells to practical stacks encounters integrated limitations in key components. This review emphasizes component‐level optimization and engineering considerations for electrodes, electrolytes, membranes, and flow fields. Critical trade‐offs among different metrics across large‐scale
Xin Long   +6 more
wiley   +1 more source

A Study on Melting Temperature of Pentatomic Refining Slag Series

open access: yesTeshugang, 2010
A study on melting temperature of CaO-Al2O3-SiO2-MgO-CaF2refining slag has been carried out by using orthogonal experimental method. With variance analysis and significance criterion it is obtained that the optimum ingredient of the pentatomic refining ...
李士琦   +5 more
doaj  

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