THE INVESTIGATION OF CRITICAL IMPELLER SPEED IN A LABORATORY MECHANICAL FLOTATION CELL

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

DARABI HOSNA; KOLEINI SEYED MOHAMMAD JAVAD; REZAI BAHRAM; ABDOLLAHY MAHMOUD

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: Nashrieh Shimi va Mohandesi Shimi Iran Year:2017 | Volume:36 | Issue:3 Page(s): 211-223

Download Full-Text

Persian Verion

View:

929

Download:

Cites:

Information Journal Paper

Title

THE INVESTIGATION OF CRITICAL IMPELLER SPEED IN A LABORATORY MECHANICAL FLOTATION CELL

Author(s)

DARABI HOSNA | KOLEINI SEYED MOHAMMAD JAVAD | REZAI BAHRAM | ABDOLLAHY MAHMOUD | Issue Writer Certificate

Keywords

LABORATORY MECHANICAL FLOTATIONQ1

SOLIDS SUSPENSIONQ1

CRITICAL IMPELLER SPEEDQ1

OPTIMUM IMPELLER SPEEDQ1

Abstract

One of the important steps in flotation is particle collection that occurs after the successful particle-bubble interaction. Effective SOLIDS SUSPENSION is a necessary preconditioning for particle collection and flotation. The CRITICAL IMPELLER SPEED, Njs, is commonly used to indicate the effectiveness of SOLIDS SUSPENSION. The CRITICAL IMPELLER SPEED refers to the minimum impeller speed where all the solids are just suspended off the bottom of the cell. In this paper, two correlations for predicting the CRITICAL IMPELLER SPEED in terms of particles size (dp), relative solids density (ρs-ρl), solids concentration (X), liquid viscosity (vL) and superficial gas rate (Jg) in two and three phases conditions have been developed. The study was conducted in a laboratory flotation cell using four size fractions of quartz, barite, and galena. The results indicated that ρs-ρl, dp, X and vL are the most important variables, respectively. The CRITICAL IMPELLER SPEED increased linearly with increasing Jg. Investigation of concentration profiles versus the relative height of the cell showed that suspension heights consistently reached a level equivalent to 0.80-0.85 of the cell height at the CRITICAL IMPELLER SPEED. Homogeneous suspension condition will only be approached as the impeller speed was increased to approximately 120-150% of the CRITICAL IMPELLER SPEED. This range can be used to predict the OPTIMUM IMPELLER SPEED in order to increase the flotation efficiency.

Cites

No record.

References

THE EFFECT OF MICRO TURBULENCE ON QUARTZ FLOTATION RATE

Cite

APA: Copy

DARABI, HOSNA, KOLEINI, SEYED MOHAMMAD JAVAD, REZAI, BAHRAM, & ABDOLLAHY, MAHMOUD. (2017). THE INVESTIGATION OF CRITICAL IMPELLER SPEED IN A LABORATORY MECHANICAL FLOTATION CELL. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), 36(3 ), 211-223. SID. https://sid.ir/paper/26324/en

Vancouver: Copy

DARABI HOSNA, KOLEINI SEYED MOHAMMAD JAVAD, REZAI BAHRAM, ABDOLLAHY MAHMOUD. THE INVESTIGATION OF CRITICAL IMPELLER SPEED IN A LABORATORY MECHANICAL FLOTATION CELL. NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN)[Internet]. 2017;36(3 ):211-223. Available from: https://sid.ir/paper/26324/en

IEEE: Copy

HOSNA DARABI, SEYED MOHAMMAD JAVAD KOLEINI, BAHRAM REZAI, and MAHMOUD ABDOLLAHY, “THE INVESTIGATION OF CRITICAL IMPELLER SPEED IN A LABORATORY MECHANICAL FLOTATION CELL,” NASHRIEH SHIMI VA MOHANDESI SHIMI IRAN (PERSIAN), vol. 36, no. 3 , pp. 211–223, 2017, [Online]. Available: https://sid.ir/paper/26324/en

Related Journal Papers