The composition of a collector directly affects its collecting performance in mineral flotation. In this study, three vegetable oils were used as the collectors, the flotation performance of scheelite and the differential analysis were studied through flotation experiments, zeta potential, contact angle measurement and Fourier transform …
Wolframite is often associated with calcium bearing minerals, leading to low grade, while conventional anionic collectors are hard to realize their efficient flotation separation, thus the effective structural modification of cationic collectors provides a new insight into enhancing the comprehensive development of wolframite resources.
The flotation separation of scheelite, which is hindered by its interface similarity with calcium-containing minerals, remains a worldwide challenge. Achieving …
The occurrence of either scheelite (CaWO 4) or wolframite ([Fe,Mn]WO 4) in tungsten deposits is generally explained by the Ca content of the host rocks, but scheelite/wolframite ratios in granitoids-hosted tungsten deposits are highly variable, ranging from scheelite-dominated to wolframite-dominated.Wolframite is also …
benzohydroxanic acid, PMOB) was synthesized and introduced as novel collector in the flotation of scheelite, wolframite and cassiterite. The flotation performance and adsorption mechanism were investigated by micro/batch flotation, zeta potential measurements and density functional theory (DFT).
With the depletion of easily mined and separated wolframite, scheelite has become the primary source of tungsten. Flotation is the primary technique used to enrich scheelite. However, flotation separation of scheelite from calcium-bearing gangue minerals, such as calcite and fluorite, has always been challenging due to their similar …
In order to improve the recovery of tungsten ores containing tin minerals, anisic hydroxamic acid (p-methoxy benzohydroxanic acid, PMOB) was synthesized and introduced as novel collector in the flotation of scheelite, wolframite and cassiterite. The flotation performance and adsorption mechanism were investigated by micro/batch …
With the depletion of easily mined and separated wolframite, scheelite has become the primary source of tungsten. Flotation is the primary technique used to enrich scheelite.
Wolframite, as the main mineral for extracting tungsten, is usually separated and enriched by flotation in mineral processing, thus the construction of efficient flotation collector is of great concern to the effective utilization of tungsten resources.
In this study, we reported a novel depressant for calcite minerals, and Pb–BHA served as the collector of scheelite. The flotation behavior of polyaspartic acid …
In this paper, the progress and prospects of scheelite flotation chemistry and its practice are summarized, encompassing various fields-such as crystal chemistry, …
Tungsten, abbreviated as W on the periodic table, is a rare and valuable metal known for its exceptional physical and chemical properties. Tungsten ore refers to the natural rock or mineral containing tungsten in its compound form. Tungsten is commonly found in nature in the form of tungstates, such as scheelite (CaWO4) and wolframite …
Request PDF | Study on the role of a hydroxamic acid derivative in wolframite flotation:Selective separation and adsorption mechanism | Wolframite, as the main mineral for extracting tungsten, is ...
In this paper, the effects of the surface electrical property and solution chemistry on the fine wolframite flotation were investigated by zeta potential measurement and the modified concentration ...
The development of sulfide-based chemistry and physical separation in the last decade opens new processes to produce metals at the industrial scale. Herein, a new route to produce metallic tungsten and tungsten carbides particles from natural wolframite (Fe,Mn)WO4 and scheelite CaWO4 is presented. Sulfidation of mineral concentrates …
Semantic Scholar extracted view of "Exploring the clean flotation mechanism towards wolframite using NaClO as an oxidant" by Jing Qi et al.
This article aims at reviewing all general physical-chemical information on froth flotation of scheelite, including electrokinetic properties, influence of pH and …
This paper systematically studied the effect of lead ions on floatability of scheelite under sodium oleate (NaOL) system, and the deep adsorption mech…
Based on physicochemical study of the reaction between scheelite and NaOH, a new decomposition process for scheelite and scheelite-wolframite concentrate, i. e., mechenically activating caustic ...
The flotation performance of wolframite using SHA as a flotation collector was systematically studied by both micro-flotation and bench-scale flotation tests, and compared with the results of traditional collector benzohydroxamic acid (BAH).
The micro flotation results showed that the recoveries of scheelite, wolframite and cassiterite using PMOB as collector are 97.45%, 95.77% and 90.08%, respectively, and …
This paper reviews the scheelite flotation reagents, including collectors and regulators, and introduces recent research progress on the mechanisms for the …
The microthermometry results obtained from scheelite, wolframite and their coexisting quartz were used to examine whether the trapping conditions of fluid inclusions in different minerals are consistent. Although fluid inclusions hosted in ore minerals are direct samples of ore-forming fluids, the studied scheelite and wolframite crystals ...
The flotation experiment showed that DPA collector has a remarkable flotation separation effect on wolframite and calcite. Additionally, the results of the contact angle and zeta potential measurements, and FTIR spectral analysis revealed that the DPA had produced strong electrostatic adsorption on the surface of wolframite, but almost no ...
The results indicate that activation of the minerals by the metallic ions, especially Pb 2+ ions, was important for flotation of the tungsten minerals. Both …
The activation of scheelite and wolframite by lead nitrate with benzohydroxamic acid (BHA) as collector was investigated by means of micro flotation test, zeta potential measurement, X-ray…
When the liberation size allows it, skarn ores can be processed by a combination of gravity separation and froth flotation. Scheelite flotation was thoroughly investigated during World War II in the USA and USSR as the tungsten demand was significantly high for military applications.
The evolution of the scheelite flotation process has been predicated on the advancement of flotation reagents, which has resulted in the creation of the fatty acid flotation process, chelating collector flotation process, and metal–organic complex flotation process, all of which are integral to the three primary scheelite flotation …
The separation and extration of tin and tungsten from wolframite – scheelite mixed ore with high tin content is urgently needed given the increasingly exhaustion of the high-grade tungsten ore.
Wolframite Flotation Activation BHA ABSTRACT The activation mechanism of Pb(II) on the flotation of wolframite was systematically investigated. Micro- o-tation test results showed that Pb(II) effectively improved the flotation of wolframite in the presence of benzyl hydroxamic acid (BHA).
With the depletion of easily mined and separated wolframite, scheelite has become the primary source of tungsten. Flotation is the primary technique used to enrich scheelite.
Wolframite and scheelite are two critical sources of tungsten. At present, flotation is an efficient mineral processing method to recover tungsten ores of low grade and fine grain. Fatty acid is usually used as a collector of scheelite but has weak effects on wolframite flotation.
The flotation enrichment of fine-particle wolframite played a crucial role in production of strategic key metal tungsten. In this paper, N-[(3-hydroxyamino)-propoxy]-N-hexyl dithiocarbamate (HAHD ...
Scheelite, wolframite, and cassiterite can be well collected in the roughing flotation with the recovery rate at 81.81%, 78.48%, and 68.86%. ... View in full-text
The flotation behavior of DPA was studied by micro-flotation and mixed binary mineral flotation tests, which showed that DPA has good collection ability and excellent selectivity for scheelite.
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