Surface chemistry considerations in the flotation of rare-earth and
Semisoluble salt minerals are characterized by their ionic bonding and are distinguished from soluble salt minerals by their limited solubility in water. One group of semisoluble salt minerals being considered is the alkaline earth salt minerals, including fluorite (CaF2), calcite (CaCO3) and apatite (Ca5F (PO4)3), as well as celestite (SrSO4) …Web
اقرأ أكثر
Investigation of the depressants involved in the
Flotation tests were performed on a skarn ore to attain the selective separation of scheelite (CaWO 4) from fluorite, apatite, and silicates.Fluorite and apatite constitute common gangue minerals in scheelite ores. Due to their similar surface properties and good floatability, the separation of scheelite from fluorite is particularly difficult.Web
اقرأ أكثر
Flotation performance and selective adsorption mechanism of …
Effective flotation separation highly depends on the selective adsorption of reagents on the mineral surface. This research found that the novel hydroxamate-based collector, octylamino-bis-(propanohydroxamic) acid (OPHA), could selectively adsorb on fluorite surface thus rendering the effective flotation separation of fluorite from barite.. …Web
اقرأ أكثر
Selective Separation of Fluorite from Calcite Using Saponified
The flotation test results showed that TA had a higher selectivity for fluorite than NaOL, leading to the selective separation of both minerals. Zeta potential measurements indicated that TA was negatively charged and was strongly adsorbed on fluorite due to electrostatic interactions at pH 9.0.Web
اقرأ أكثر
Flotation separation of fluorite from calcite using
Flotation separation of fluorite from calcite using bis hydroxamic acid collector 1. Introduction. Fluorite (CaF 2) is a nonrenewable and critical non-metallic mineral resource. In addition to... 2. Materials and methods. The pure mineral sample of …Web
اقرأ أكثر
The role of gellan gum in the selective flotation separation of
The efficacious separation of fluorite from impurities is necessary to ensure that it meets market standards. The main approach to purifying the fluorite resources is flotation [ 4 ]. In this regard, sodium oleate (NaOL) as the derivative of fatty acids has been widely used as collector, as it can adsorb on the minerals and makes their surfaces ...Web
اقرأ أكثر
Fluorite flotation separation from bastnaesite via an eco-friendly
The separation of fluorite and bastnaesite has improved somewhat as a result of the aforementioned studies, but there are still some problems, such as low separation efficiency, toxic chemicals, and high cost. Causticized starch is a kind of high molecular carbohydrate that is environmentally friendly, non-toxic, and inexpensive. ...Web
اقرأ أكثر
Fluorite flotation separation from bastnaesite via an eco-friendly
The separation of fluorite and bastnaesite is usually achieved by two ways: preferential flotation of bastnaesite to depress fluorite and preferential flotation of …Web
اقرأ أكثر
Materials | Free Full-Text | Mineralogical Characteristics and
Fluorite is rich in mineral resources and its gorgeous colors and excellent luminescence characteristics have attracted the attention of many scholars. In this paper, the composition, structure, luminescent properties, and the potential application value of three fluorites with different colors and are systematically analyzed. The results show that …Web
اقرأ أكثر
Minerals | Free Full-Text | Utilization of Sodium
This study presents a highly selective reagent system that utilizes sodium hexametaphosphate (SHMP) to improve the separation of scheelite from calcite and fluorite using an anionic–nonionic collector. The recoveries of calcite and fluorite decreased to 20% as the SHMP dose exceeded 6 × 10−6 mol/L, whereas that of …Web
اقرأ أكثر
Understanding the sequential flotation separation of fluorite, barite
DOI: 10.1016/j.ces.2023.119608 Corpus ID: 265697228; Understanding the sequential flotation separation of fluorite, barite and calcite through the AFM adhesion force …Web
اقرأ أكثر
Frontiers | Effects of Sodium Alginate on the Flotation …
In this paper, the effect of sodium alginate (SA) on the flotation separation of molybdenite (MoS2) from chalcopyrite using kerosene as collector was systematically investigated. The results of single-mineral micro …Web
اقرأ أكثر
Selective Flotation of Calcite from Fluorite: A Novel Reagent …
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 …Web
اقرأ أكثر
Interaction mechanism of 2-hydroxy-3-naphthyl
Previous works show that the flotation separation of bastnaesite and calcite has the greater difficulty than that of bastnaesite and fluorite using NHAs, and that the heavy use of depressant is therefore needed [43]. It is an important subject to develop novel collectors to achieve the effective flotation separation of bastnaesite and calcite ...Web
اقرأ أكثر
Calcite in froth flotation
Calcite is a semi-soluble mineral that can be considered one of the main problematic gangue phases for several different types of valuable sulfides and oxides. Since froth flotation is the main beneficiation technique for upgrading these valuable minerals, calcite flotation separation has been widely investigated.Web
اقرأ أكثر
Minerals | Free Full-Text | Selective Separation of Scheelite from
The flotation separation of scheelite from calcite is problematic, where sodium silicate modified by polyvalent metal ions has shown some advantages for selective depression. In this study, an Al-Na2SiO3 polymer was used as the depressant for the flotation separation of scheelite from calcite using a lead complex of benzohydroxamic …Web
اقرأ أكثر
An integrated experimental and computational
To separate fluorite from calcite and other associated minerals, flotation is the primary method employed. Oleic acid serves as the most commonly used collector in …Web
اقرأ أكثر
Flotation separation of scheelite from calcite using mixed …
exhibited exhibited a higher selectivity for the flotation separation of scheelite from calcite and fluorite than the 733-collector alone.. Huang et al (2016) found that there is a high selectivity and recovery for the flotation of scheelite from calcite at pH 7 using Corresponding author. E-mail address: liucheng309@sina (C.Liu)Web
اقرأ أكثر
Flotation separation of fluorite from calcite using
The efficient separation of fluorite and calcite is a challenging task in the field of mineral processing because of their similar chemical and physical properties. In this research, octylamino-bis-(butanohydroxamic acid) (OBHA) was introduced as collector into a flotation system comprising fluorite and calcite, and the separation of fluorite ...Web
اقرأ أكثر
Selective flotation separation of spodumene from
Owing to the similar surface properties of scheelite and fluorite, the separation of them is very difficult by only using the traditional collectors of fatty acids. In this study, Nitrilotri(methylphosphonic acid) (ATMP) was used as a depressant to realize the efficient separation of these two minerals. The separation performance and the ...Web
اقرأ أكثر
Effect of Fluoride Ion on the Separation of Fluorite …
As a common depressant, acidified water glass (AWG) has strong inhibitory effects on fluorite and calcite. The inhibited fluorite is difficult to be recovered, thus resulting in the waste of resources and low …Web
اقرأ أكثر
Zhiyong GAO | Professor (Full), vice dean | PhD
Fluorite and scheelite, which are strategic calcium-bearing minerals, have similar active sites (Ca2+); as a result, the efficient separation of the two minerals is still one of the world's most ...Web
اقرأ أكثر
Difficulties and Recent Achievements in Flotation Separation of
Industrial Practice Cases of Flotation Separation of Fluorite and Calcite (1) The Yaroslavl Mining Company processes carbonate-fluorite ores from Russia's largest …Web
اقرأ أكثر
Utilization of Citric Acid to Improve the Depressive Efficiency of
The recoveries of fluorite and calcite decreased from 62.53% and 74.78% to 14.39% and 20.45% when the CA concentration increased from 1 × 10 −5 to 4 × 10 −4 mol/L. Single depressant displayed a certain depressive effect on fluorite and calcite, while the dosage was large and the depressive effect was imperfect.Web
اقرأ أكثر
Minerals | Free Full-Text | Selective Separation of Fluorite from
The results of minerals flotation tests showed that under the 1.6 × 10 −5 mol/L SDAA at pH 7.0, the selective separation of fluorite against scheelite could be achieved …Web
اقرأ أكثر
Minerals | Free Full-Text | Reverse Flotation Separation of Fluorite
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 …Web
اقرأ أكثر
Pre-concentration of fluorite from a rare earth element carbonatite
Magnetic separation is commonly used to separate diamagnetic minerals (such as fluorite and quartz) from ferromagnetic minerals (such as siderite), and from paramagnetic minerals (such as monazite, bastnaesite and xenotime) (Gupta and Krishnamurthy, 1992, Habashi, 2013).Web
اقرأ أكثر
Flotation separation of bastnaesite from fluorite with an eco …
In addition, both fluorite and bastnaesite belong to semi-soluble salt minerals, and the cations dissolved from mineral surfaces will not only complicate the flotation pulp environment but also unselectively adsorb on different minerals, causing problems for the flotation separation of bastnaesite and fluorite [10], [11], [12].Web
اقرأ أكثر
Froth flotation of fluorite: A review
Calcite-fluorite separation. The flotation separation of calcite and fluorite is one of the most challenging tasks, mainly because of their similar surface properties. …Web
اقرأ أكثر
The Challenge of Tungsten Skarn Processing by Froth Flotation: …
Various reagents suitable for scheelite flotation (collectors and depressants, mostly) are reviewed in the present work, with a strong focus on the separation of …Web
اقرأ أكثر