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at the expense of low calcium removal rate. Key words: crystallization; gypsum; KCl regeneration; calcium removal ... respectively. Calcium removal is the molar fraction of Ca2+ removed through the production of gypsum. In the second part, to obtain an ideal KCl concentration in the regenerated solution, K2SO4 solid......
J. Cent. South Univ. (2018) 25: 1920-1927 DOI: https://doi.org/10.1007/s11771-018-3882-9 Influence of blast furnace top gas composition and dust on HCl removal with low temperature Ca-based... and dust on HCl removal with low temperature Ca-based antichlor was studied. It was found that, when the content of CO2 in blast furnace top gas increased, the dechlorination efficiency was getting......
is released by hydrolysis of CaCl2 (calcium chloride) and MgCl2 (magnesium chloride) and also contains H2S (hydrogen sulfide) [7–8]. The corrosion in this unit is mostly due to condensed HCl acid [9... in dilute HCl solution Roland T. Loto1, 2, Cleophas A. Loto1, 2, Abimbola P. Popoola2, Tatiana Fedotova2 1. Department of Mechanical Engineering, Covenant University, Ota, Ogun State, Nigeria; 2. Department......
calcium removal by HCl, the WLRV is highly enhanced and reaches about 50% when only 2% Na Cl was added. If the HCl content is too high, the stone coal is easily sintered and the formed glass structure...Effect of Calcium on the Vanadium Extraction from High Calcium Type Stone Coal包申旭1,2,LIANG Liang1,张一敏1,2,HAN Shihua1,HU Yangjia11. College of Resources and Environmental Engineering, Wuhan University......
from sodium chromate solution during vanadate anion removal by adding excess lime in the current lime-free roasting process [1]. CVR contains calcium vanadate (about 3% V2O5) and calcium chromate... as to analyse phase evolution of calcium-bearing compounds. Removal of vanadate anion in sodium chromate solution was also finished in bomb as mention above. 3.3 Methods The vanadium content in the solid......
. Behavior and mechanism of arsenic removal by high-calcium steel slag LI Yong1, 2, ZHU Xing1, 2, QI Xian-jin1, 2, WEI Yong-gang1, 2, LI Kong-zhai1, 2, HU Jian-hang1, 2, WANG Hua1, 2 (1. State Key... of Science and Technology, Kunming 650093, China) Abstract: Based on the analysis of the composition and leaching characteristics of high-calcium steel slag, the research on the removal of arsenic......
J. Cent. South Univ. Technol. (2009) 16: 0558-0562 DOI: 10.1007/s11771-009-0093-4 Alkaline treatment kinetics of calcium phosphate by piezoelectric quartz crystal impedance ZENG Li-ping(曾丽萍)1...; Abstract: Calcium phosphate film was prepared by electrochemical deposition technology. Subsequently, the alkaline treatment process of calcium......
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Preparation of MnO2 and calcium silicate hydrate from electrolytic manganese residue and evaluation of adsorption propertiesLI Chang-xin(李昌新), ZHONG Hong(钟宏), WANG Shuai(王帅), XUE Jian-rong(薛建荣), WU... byproduct resulting from the electrolytic manganese industry, was used as a cheap and abundant chemical source for preparing MnO2 and EMR-made calcium silicate hydrate (EMR-CSH). The MnO2 is successfully......
Preparation and mechanism of calcium phosphate coatings on chemical modified carbon fibers by biomineralization HUANG Su-ping(黄苏萍), ZHOU Ke-chao(周科朝), LI Zhi-you(李志友) State Key Laboratory... and biomineralization processes were applied. The phase components, morphologies, and possible growth mechanism of calcium phosphate were studied by infrared spectroscopy(IR), X-ray diffractometry(XRD) and scanning......
