refining process
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Chemosphere ◽  
2022 ◽  
Vol 288 ◽  
pp. 132524
Author(s):  
Gan Wan ◽  
Lei Bei ◽  
Jie Yu ◽  
Linlin Xu ◽  
Lushi Sun

Materials ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 575
Author(s):  
Mariola Saternus ◽  
Tomasz Merder

Obtaining high-quality aluminum is associated with the use of an effective method of refining, which is argon-purging, in which gas bubbles are introduced into the liquid metal by means of rotary impellers. Various rotary impellers are used in the industry; however, if a newly designed impeller is constructed, it should be tested prior to industrial use. For this purpose, physical modeling is used, which enables the investigation of the phenomena occurring during refining and the selection of optimal processing parameters without costly research carried out in the industry. The newly designed rotary impeller was tested on the physical model of a URO-200 batch reactor. The flow rate of refining gas was: 10, 15 and 20 dm3·min−1, whereas rotary impeller speed was 300, 400 and 500 rpm. The research consists of a visualization test showing the schemes of the gas bubbles’ dispersion level in the liquid metal and experiments for removing oxygen from water, which is an analogue of removing hydrogen from aluminum.


2022 ◽  
Vol 18 (119) ◽  
pp. 231-242
Author(s):  
Aniseh Zarei Jelyani ◽  
hannan lashkari ◽  
Javad Tavakoli ◽  
Mahmood Aminlari ◽  
◽  
...  

2022 ◽  
pp. 457-474
Author(s):  
Melvin Moore ◽  
Vicki Z. Liu ◽  
Chih-Kai Yang ◽  
Zachary Cowden ◽  
Sean D. Simpson

2022 ◽  
Author(s):  
Xia Jiang ◽  
Feng Long ◽  
Qiaolong Zhai ◽  
Jiaping Zhao ◽  
Peng Liu ◽  
...  

Abstract: Soap stocks are by-products during the refining process of vegetable oil, which are mainly feedstocks to produce acidified oil. In this work, an efficient process was developed to convert...


2021 ◽  
Vol 119 (1) ◽  
pp. 101
Author(s):  
Yaqiong Li ◽  
Yunlong Yu ◽  
Lifeng Zhang ◽  
Zhengtao Li

The interfacial reactions between impurities (Al and Ti) and slag onset of Si purification by 51 mol% SiO2–34 mol% CaO–15 mol% MgO slag addition were studied to enhance impurity removal efficiency from Si. The Al distribution behavior at the Si/Slag interface was investigated; a short reaction time (10 s) resulted in the formation of successive SiO2–CaO–MgO–Al2O3 layers in the slag with a thickness of 10 µm; increasing the reaction time (60 s) resulted in the entire ternary slag being changed into SiO2–CaO–MgO–Al2O3 quaternary slag due to the diffusion of Al2O3. It was shown that the highest impurity removal rate of Al could be achieved at the onset of the slag refining process. Based on the Ti distribution at the Si/slag interface, the slag refinement with 51 mol% SiO2–34 mol% CaO–15 mol% MgO had no effect on Ti removal.


Author(s):  
Xiaofang Liu ◽  
Zhenfang Zhang ◽  
Mengyu Shen ◽  
Yinyin Wu ◽  
Xudong He ◽  
...  

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