Effect of particle size on uranium bioleaching in column reactors from a low-grade uranium ore

2019 ◽  
Vol 281 ◽  
pp. 66-71 ◽  
Author(s):  
Xuegang Wang ◽  
Zhanxue Sun ◽  
Yajie Liu ◽  
Xiaobo Min ◽  
Yadan Guo ◽  
...  
Keyword(s):  
Particle Size ◽  
Low Grade ◽  
Uranium Ore ◽  
Uranium Bioleaching ◽  
Effect Of Particle Size

Effect of particle size on bioleaching of low-grade nickel ore in a column reactor

2021 ◽  
Vol 28 (5) ◽  
pp. 1333-1341
Author(s):  
Xin Wang ◽  
Hong-ying Yang ◽  
Qin Zhang ◽  
Zhe-nan Jin ◽  
Lin-lin Tong ◽  
...  
Keyword(s):  
Particle Size ◽  
Low Grade ◽  
Column Reactor ◽  
Effect Of Particle Size

The effect of particle size, irrigation rate and aeration rate on column bioleaching of uranium ore

2017 ◽  
Vol 58 (3) ◽  
pp. 188-199 ◽  
Author(s):  
H. Zare Tavakoli ◽  
M. Abdollahy ◽  
S. J. Ahmadi ◽  
A. Khodadadi Darban
Keyword(s):  
Particle Size ◽  
Aeration Rate ◽  
Uranium Ore ◽  
Irrigation Rate ◽  
Effect Of Particle Size

scholarly journals Benefisiasi Bijih Emas dan Perak Kadar Rendah Menggunakan Palong dan Metode Flotasi

2018 ◽  
Vol 12 (2) ◽  
pp. 1
Author(s):  
Widi Astuti ◽  
Kusno Isnugroho ◽  
Fika Rofiek Mufakhir ◽  
Ulin Herlina ◽  
Isti Nurjanah
Keyword(s):  
Particle Size ◽  
Processing Time ◽  
Low Grade ◽  
Sequence Effect ◽  
Gravity Concentration ◽  
Gold Ore ◽  
Effect Of Particle Size

A B S T R A C TBeneficiation of low-grade gold and silver ores were investigated by gravity concentration flotation methods. The ores were obtained from Way Kanan Region and Mount Burhan in Province of Lampung. In this study, gravity concentration in sluice box and flotation were performed in sequence. Effect of particle size was investigated in gravity concentration by sluice box. Furthermore, effect of various parameters in flotation operation such as concentration of collector, ore particle size, and processing time were studied. Gravity concentration in sluice box indicated that the highest recovery of gold and silver were 76.52% and 94.83%, respectively when using ore particle size of 100+150 mesh. Flotation experiments showed that the maximum recoveries of gold and silver obtained were 98.33% and 86.42%. The conditions to obtain maximum recovery in this study were -100+150 mesh of ores particle size, 25 mL/kg concentration of collector, and 25 minutes of processing time.Keywords: beneficiation; flotation, gold ore; silver ore; sluice box.A B S T R A KBenefisiasi bijih emas dan perak kadar rendah menggunakan konsentrasi gravitasi dengan palong dan menggunakan flotasi telah dilakukan. Bijih emas dan perak yang digunakan berasal dari daerah Way Kanan dan Gunung Burhan di Provinsi Lampung. Pada penelitian ini, konsentrasi gravitasi dengan palong dilakukan terlebih dahulu sebelum dilakukan benefisiasi menggunakan flotasi. Pengaruh ukuran partikel dipelajari pada konsentrasi gravitasi dengan palong. Sedangkan pengaruh beberapa variabel seperti konsentrasikolektor, ukuran partikel, dan waktu flotasi dipelajari dalam proses benefisiasi menggunakan flotasi. Pada konsentrasi gravitasi dengan palong, hasil percobaan menunjukkan bahwa persen recovery emas dan perak tertinggi secara berturut-turut adalah 76,52% dan 94,83% ketika digunakan ukuran partikel -100+150 mesh. Pada proses flotasi, hasil percobaan menunjukkan bahwa persen recoveryemas dan perak maksimum yang diperoleh adalah 98,33% dan 86,42% ketika digunakan ukuran partikel -100+150 mesh, konsentrasi kolektor 25 mL/kg dan waktu flotasi 25 menit.Kata kunci: benefisiasi; emas; flotasi; palong; perak

Study of Microorganism Trench-Leaching of a Chinese High Fluorine-Bearing Uranium Ore

2015 ◽  
Vol 1130 ◽  
pp. 468-472
Author(s):  
Xiao Lan Mo ◽  
Jian Kang Wen ◽  
Cheng Yan Xu ◽  
Biao Wu ◽  
Bo Wei Chen ◽  
...  
Keyword(s):  
Particle Size ◽  
Real Time ◽  
Real Time Pcr ◽  
Microbial Population ◽  
Acid Leaching ◽  
Pcr Analysis ◽  
Low Grade ◽  
Fluoride Solution ◽  
Uranium Ore ◽  
Leaching Process

The microorganism trench-leaching process of a low-grade uranium ore with a high content of fluorine was experimentally studied through the technique of Real-time PCR by using the fluorine-tolerance bacteria of Retech-3 as the leaching-ore bacteria. It was found that the Retech-3 strains of fluorine-tolerance domestication grown well in a fluoride solution with concentration of 0.0~3.0 g·L-1, and the oxidation of Fe2+ ions to Fe3+ ions occurred rapidly to promote the extraction of uranium. The experimental results showed that the bioleaching rate (89.82%) of uranium can be improved of 13.80% than acid leaching in 30 days with 65 kg ore and its particle size of-6 mm (fraction of 100%) in trench. The Real-time PCR analysis of microbial population compositions revealed that Retech-3 strains were mainly composed of Leptospirillum sp. and Acidithiobacillus sp. in the leaching process. The obvious improvements of fluorine-tolerance domestication of bacteria and the uranium leaching process will provide fundamentals for the smooth utilization of a high fluorine-containing uranium ore with the aid of microorganism trench-leaching.

Effect of particle size on erosion measurements and predictions in annular flow for an elbow

Wear ◽  
2020 ◽  
pp. 203579
Author(s):  
G. Haider ◽  
M. Othayq ◽  
J. Zhang ◽  
R.E. Vieira ◽  
S.A. Shirazi
Keyword(s):  
Particle Size ◽  
Annular Flow ◽  
Effect Of Particle Size

The Effect of Particle Size and Phospholipid on Growth and Fat Utilization of the Baby Pig

1951 ◽  
Vol 10 (4) ◽  
pp. 867-874 ◽  
Author(s):  
B. E. Sheffy ◽  
Carlos Acevedo Gallegos ◽  
R. H. Grummer ◽  
P. H. Phillips ◽  
G. Bohstedt
Keyword(s):  
Particle Size ◽  
Fat Utilization ◽  
Effect Of Particle Size
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