The separation effect was remarkable, making SS a new and efficient depressant for mineral separation. However, the application of SS and its mechanism of action in the flotation separation of smithsonite and calcite have not been reported yet. ... After crushing the ore, it was screened for high-purity smithsonite and calcite minerals, …

For calcium-containing minerals, Ozcan et al. [16] investigated the effect of quebracho on the separation of scheelite and calcite, and Castro et al. [17] examined the influence of quebracho on the flotation of celestite and calcite with NaOl. These investigations provided valuable information for the current study.

This paper proposes luteolin (LUT) as a novel depressant for the flotation-based separation of scheelite and calcite in a sodium oleate (NaOL) system. The suitability of LUT as a calcite depressant is confirmed through micro-flotation testing. At pH = 9, with LUT concentration of 50 mg·L−1 and NaOL concentration of 50 mg·L−1, …

The combination of Fe 2+ /Fe 3+ sulfate was used as selective depressant for the flotation separation of fluorite and calcite.. Ferrous and ferric species were in-situ generated on calcite surface to hinder the adsorption of NaOL. • Fluorite concentrate with CaF 2 grade of 80.29 % and recovery of 90.79 % was obtained using 1:1 mixed minerals.

a good synergistic effect on the separation of smithsonite, calcite, and dolomite when used as combined collectors, so it is important to clarify the adsorption …

In this review, anal- yses o f the fundamental reasons for the difficulties of flotation separation of fluorite from calcite are performed, from the similar surface …

Materials. The pure mineral samples of fluorite and calcite were obtained from Guangzhou Mingfa Mineral Specimen Manufacturing Co., LTD. The samples of − 0.075 mm particle size and − 0.075 mm ...

An interesting separation of calcite and other minerals at pH values near 4 has been demonstrated. Despite the fact calcite begins to dissolve itself at pH values below 4, the pK a of the carboxylic functions of sulphosuccinamate is approximately pH 7.6. At pH 4, the main form of the carboxylic function of sulphosuccinamate is the molecular form.

The purified mineral samples of celestite, fluorite and calcite were supplied by Tongliang of Chongqing city (China). To study the chemical characteristics and mineral compositions of celestite, fluorite and calcite, the chemical composition and X-ray diffractometry of these three minerals were shown in Fig. 1 and Table 1, …

These findings are of great help in promoting malachite flotation and its effective flotation separation from gangue minerals. 2. Experimental2.1. Materials and reagents. ... ε pm is the recovery of pure malachite or calcite (quartz) minerals, and m f (g) and m t (g) are the mass of the froth products and tailings, respectively. In Eq. ...

Advancing phosphate ore minerals separation with sustainable flotation reagents: An investigation into highly selective biobased depressants ... depression effect on apatite, calcite, dolomite, and quartz in different mineral systems. As illustrated in this table, calcite is the mineral that has been more studied among the four minerals and ...

To verify the separation performance of smithsonite from calcite with PA, the flotation experiments of mixed minerals (the mass ratio of smithsonite and calcite was 1:1) were conducted based on the optimized conditions determined by the single mineral flotation experiments. Separation efficiency (SE) was used to evaluate the flotation ...

Key words: scheelite; calcite; separation enhancement; sodium oleate; metal-inorganic complex depressant. 1 Introduction . Scheelite is rich in resources and has a low grade. It generally coexists with other calcareous gangue minerals [1]. The difficulty in the scheelite flotation is the separation of scheelite from calcium- bearing gangue ...

In this study, in light of the poor selectivity of single copper ions (Cu 2+) and poor inhibition ability of citric acid (CA), the flotation separation effect of mixed depressant Cu 2+ /CA on scheelite and calcite was explored. The microflotation experiment showed that the mixed depressant had better separation effects on the two minerals than the …

The effective separation of bastnaesite from calcium-containing gangue minerals such as calcite is often difficult and the development of more environmentally-friendly and efficient collectors is imperative. A novel cationic Gemini surfactant ethane-1,2-dodecyldimethylammonium bromide (EDDA) was designed and synthesized in the …

Since wolframite is usually associated with calcite, the separation and enrichment of wolframite by froth flotation remains a great challenge. Herein, a novel trisiloxane surfactant N-(2-aminoethyl)-3-aminopropyltrisiloxane (AATS) was successful synthesized, which was used for the separation of wolframite from calcite for the first time.

Owing to the depletion of wolframite, the focus of tungsten extraction has gradually shifted to scheelite. However, separating the associated minerals (e.g., apatite, fluorite, and calcite) and scheelite is challenging because their surface physicochemical properties are similar to those of scheelite. Fortunately, researchers have made …

Through the mixed minerals flotation, the concentrate with the 93.89% grade and 83.37% recovery of CaF 2 was achieved by adding 75 mg/L TE before the collector, confirming that the separation between fluorite and calcite could be well realized. The adsorption measurements revealed the adsorption amount of TE on the calcite surface …

The flotation separation of smithsonite and calcite is difficult due to their similar surface properties. In this study, cupferron was applied as a collector to realize the separation of smithsonite and calcite. Micro-flotation experiment results indicated that smithsonite and calcite express different floatability after treatment with cupferron. The …

A series of our single mineral flotation tests prov ed that reverse flotation separation of fluorite. from calcite can be achieved by using a novel re agent scheme of 3 × 10 − mol/L of HEDP and ...

Due to the high selectivity adsorption of pentyl xanthate, flotation separation of malachite and calcite has been achieved without the action of regulators, providing a new direction for the high-efficient, environmentally-friendly, and low-cost utilization of oxidized copper ore with high content of carbonate minerals. 2. Experimental2.1.

At present, the research on flotation separation of cassiterite and gangue minerals is mainly focused on the development of new collectors or depressants, while the research on combined depressants is rare. In this study, the flotation separation of cassiterite and the typical gangue mineral, calcite, was investigated using the metal …

In this study, the flotation separation of cassiterite and the typical gangue mineral, calcite, was investigated using the metal-inorganic complex depressant AlSS, …

Fluorite is an important strategic mineral. In general, fluorite ores will contain a certain amount of calcite gangue mineral. Thus, they need to be separated from each other. For an economic separation, a reverse flotation process is used to float calcite gangue from fluorite. However, little information on the separation is available. In this …

However, selective separation of fluorite and calcite minerals with an anionic collector could be realized by adopting different depressant systems. Tannic acid (TA) is a well-known organic depressant that has received considerable attention in many fields. TA is a type of high-molecular-weight polyphenol that can be found in different …

Enhancing the separation of rare-earth elements (REEs) from gangue materials in mined ores requires an understanding of the fundamental interactions driving the adsorption of collector ligands onto mineral interfaces. In this work, we examine five functionalized hydroxamic acid ligands as potential collectors for the REE-containing bastnäsite …

As fluorite resources contain calcite as a gangue mineral, the separation between these two calcium containing minerals is difficult. … Expand. 2. Highly Influenced. PDF. 2 Excerpts; Save. Insights into the adsorption mechanism of tannic acid by a green synthesized nano-hydroxyapatite and its effect on aqueous Cu(II) removal.

Fluorite (CaF2), as an important strategic mineral source, is usually separated from calcite by the common froth flotation method, but this separation is still not selective enough. The development of a selective collector and/or depressant is the key to achieving high selective separation. 1-Hydroxyethylidene-1,1-diphosphonic acid (HEDP …

The flotation separation of Cu-Fe sulfide minerals at low alkalinity can be achieved using selective depressants. In the flotation system of Cu-Fe sulfide minerals, depressants usually preferentially interact with the pyrite surface to render the mineral surface hydrophilic and hinder the adsorption of the collector. This review summarizes …

The separation effect was remarkable, making SS a new and efficient depressant for mineral separation. However, the application of SS and its mechanism of action in the flotation separation of smithsonite and calcite have not been reported yet. In this study, SS was used as a depressant for the flotation separation of smithsonite and …