Next Article in Journal
Mineralogical, Rock-Magnetic and Palaeomagnetic Properties of Metadolerites from Central Western Svalbard
Previous Article in Journal
Three-D Mineralogical Mapping of the Kovdor Phoscorite-Carbonatite Complex, NW Russia: III. Pyrochlore Supergroup Minerals
Article Menu
Issue 7 (July) cover image

Export Article

Open AccessArticle
Minerals 2018, 8(7), 278;

Effect of Sodium Pyrophosphate on the Reverse Flotation of Dolomite from Apatite

School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
Author to whom correspondence should be addressed.
Received: 4 June 2018 / Revised: 25 June 2018 / Accepted: 26 June 2018 / Published: 29 June 2018
(This article belongs to the Section Mineral Processing and Metallurgy)
Full-Text   |   PDF [1871 KB, uploaded 19 July 2018]   |  


In this study, the effect of sodium pyrophosphate (NaPP) on the separation of apatite from dolomite by flotation was systematically investigated. Flotation results revealed that NaPP could selectively depress the flotation of apatite, thus realizing the separation of apatite from dolomite. Further, the selective depression mechanism of NaPP was studied through zeta potential measurements, contact angle measurements, and X-ray photoelectron spectroscopy (XPS) analysis. The results demonstrated that the adsorption of sodium oleate (NaOL) onto apatite surface was depressed by the preferential interaction of NaPP with active Ca sites. For dolomite, while the presence of NaPP hindered the interaction of NaOL with active Ca sites, it appeared to enhance the reactivity with active Mg sites. Thus, the adsorption of NaOL onto dolomite surface was hardly influenced. In this way, the separation of apatite from dolomite was achieved. View Full-Text
Keywords: sodium pyrophosphate; flotation; depression; apatite; dolomite sodium pyrophosphate; flotation; depression; apatite; dolomite

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Chen, Y.; Feng, Q.; Zhang, G.; Liu, D.; Liu, R. Effect of Sodium Pyrophosphate on the Reverse Flotation of Dolomite from Apatite. Minerals 2018, 8, 278.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Minerals EISSN 2075-163X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top