نتایج جستجو برای: frother type

تعداد نتایج: 1342028  

Journal: :Minerals 2022

This short communication evaluates a new strategy to sample bubbles in gas dispersion characterizations. Bubble size is measured bidimensional flotation cell using the McGill bubble analyzer under different types of frothers, frother concentrations and superficial rates. The original design this viewer modified, changing deflecting system photograph only fraction entering device. As result, inc...

2008
I. O. Ogunniyi

Please cite this article in press as: Ogunniy ..., Miner. Eng. (2008), doi:10.1016/j.minen Froth flotation for beneficiation of printed circuit board comminution fines was investigated in this work, via reverse flotation under a scheme described as natural hydrophobic response. With no reagents, the scheme employed variation of kinetic parameters of airflow rate and impeller speed to optimize m...

2011
B. Das S. Prakash P. S. R. Reddy S. K. Biswal B. K. Mohapatra V. N. Misra

Investigations were carried out on the effective utilization of blast furnace flue dust samples obtained from the two integrated steel plants at Rourkela and Jamshedpur. The samples essentially contained unburnt coke and iron rich grains as the value added products. Flotation technique was employed to recover the carbon values present in the sample. It was possible to obtain a product containin...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده ادبیات و زبانهای خارجی 1391

abstract this study investigates the teachers’ correction of students’ spoken errors of linguistic forms in efl classes, aiming at (a) examining the relationship between the learners’ proficiency level and the provision of corrective feedback types, (b) exploring the extent to which teachers’ use of different corrective feedback types is related to the immediate types of context in which err...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه امام رضا علیه السلام - دانشکده ادبیات و علوم انسانی 1392

چکیده ندارد.

Journal: :Academic platform-Journal of engineering and science 2021

In this study, grinding + flotation experiments were performed on the sample of complex Pb-Zn sulphide ore taken from Niğde (Ulukışla-Madenköy) region in Turkey. According to mineralogical analysis used experimental studies, it was determined that composition contains calcite, quartz, pyrite, chalcopyrite, hematite, goethite, limonite, gypsum, galena, sphalerite, jarosite, arsenopyrite and marc...

Journal: :Mineral Processing and Extractive Metallurgy Review 2021

The relation between rate constant k1 and absolute temperature T for graphite, anthracite, coal floated with only frother was investigated using combined theoretical empirical approaches. It determined that the lnk1 1/T is curvilinear requires a polynomial of second degree sufficient approximation experimental data points. Therefore, well-known Arrhenius formula chemical reactions, predicting l...

Journal: :Separation Science and Technology 2021

A considerable difference exists between the flotation separation of artificial minerals and real low-grade ores processing where selectivity would be main issue. Nanobubble-assisted (NB) investigations have been mostly examined with pure materials a narrow particle size range, less on complex sulfide ores. This study considered NB for Pb-Cu-Zn ore in two different ranges various conditions to ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علامه طباطبایی - دانشکده ادبیات و زبانهای خارجی 1389

abstract tasks nowadays are at the center of attention in sla research. task types is one of the critical issues in this regard, their effectiveness and suitability to any particular context, their characteristics and the result they yield are among some of these issues. on the other hand, discourse markers (dms) have been very much investigated and their effectiveness in conveying the meaning...

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