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Keywords = sodium silicate modified with zinc sulfate

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Article
Flotation Separation of Magnesite from Dolomite Using Sodium Silicate Modified with Zinc Sulfate as a Selective Depressant
by Na Luo, Jingyang Shi, Baobao Yan and Xiaoping Wang
Minerals 2024, 14(4), 355; https://doi.org/10.3390/min14040355 - 28 Mar 2024
Cited by 12 | Viewed by 2114
Abstract
Flotation separation of magnesite from dolomite in the presence of SSZS (sodium silicate modified with zinc sulfate) as an inhibitor and NaOL (sodium oleate) as a collector has been studied via flotation tests, zeta potential measurements, contact angle measurements, and Fourier transformation infrared [...] Read more.
Flotation separation of magnesite from dolomite in the presence of SSZS (sodium silicate modified with zinc sulfate) as an inhibitor and NaOL (sodium oleate) as a collector has been studied via flotation tests, zeta potential measurements, contact angle measurements, and Fourier transformation infrared spectroscopy analysis (FT-IR). The flotation tests show that NaOL has strong collecting capacity in magnesite and dolomite flotation, so it is difficult to separate two minerals via flotation without inhibitors. SSZS is used as the depressant, which can selectively inhibit dolomite flotation and has little depression effect on magnesite. Zeta potential measurements, contact angle measurements, and FT-IR analysis indicate that SSZS can adsorb strongly onto dolomite’s surface and has a weak adsorption effect on magnesite. The adsorption of SSZS prevents NaOL from acting on the surface of dolomite. On the contrary, because there is little adsorption of SSZS onto magnesite, NaOL can still adsorb onto magnesite’s surface. Full article
(This article belongs to the Section Mineral Processing and Extractive Metallurgy)
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