Selective flotation of scheelite from calcite and fluorite ...
In this study, a collector mixture of 733 and MES (sodium fatty acid methyl ester sulfonate) demonstrated a high selectivity for the flotation of scheelite from calcite and fluorite.
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In this study, a collector mixture of 733 and MES (sodium fatty acid methyl ester sulfonate) demonstrated a high selectivity for the flotation of scheelite from calcite and fluorite.
The results show that sodium oleate has collecting ability to both scheelite and calcite and the flotation separation of scheelite from calcite cannot be realized if collector is used only.
Because water glass white tungsten and barite inhibition similar single water glass is difficult to separate, need to use alkyl sulfate as collector at PH = condition repeatedly selected barite, obtained in the tank scheelite. 3 White tungsten sulfide ore separation. Scheelite flotation previously captured xanthate sulfide minerals, the ...
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 AlNa2SiO3 polymer was used as the depressant for the flotation separation of scheelite from calcite using a lead complex of benzohydroxamic acid (PbBHA) as the collector. Furthermore, a number of ...
The results show that, compared with the commonly used collector sodium oleate, the combine use of sodium oleate and polyether P123 improves the recovery of scheelite while decreases the recovery of calcite, but the flotation separation of scheelite and calcite can not be achieved by using collector .
Round 1. Reviewer 1 Report. The manuscript presents results of flotation tests to study the effect of sodium hexametaphosphate (SHMP) as a depressant of calcite and fluorite in the process of flotation of scheelite with an anionicnonionic assembled collector (sodium oleate and oleamide with a .
A process for the separation of scheelite from calcite present in an ore or a concentrate formed from an ore, which process includes the steps of decomposing any flotation agent residues contained in the concentrate, and treating the ore or concentrate to condition the particle surfaces with a monosubstituted butane diamine of the formula H 2 4 H 8 .N(H)R, wherein R is a longchain ...
Jul 04, 2019· For example, scheelitequartz (or silicate) type can be used in combination with gravity separation and flotation according to the particle size distribution, while scheelitecalcitefluoritebarite type can be recovered by flotation. The separation methods of scheelite are different with different disseminated grain size.
A mathematical model was developed for the grinding and flotation section of Union Carbide''s Bishop mill and this model was used to indicate how variations in grind, retention time, and calcite and fluorite content effects the mill capacity, tungsten units produced, and the grade and recovery of the scheelite concentrate. A model such as this is a starting point in determining the economic ...
Scheelite was floated from a lowgrade ( per cent W03) calcitic ( per cent CaCO3) scheelite ore using oleoyl sarcosine as collector and alkylated 8hydroxyquinoline as modifier. Compared to oleoyl sarcosine alone, the grade and the recovery of scheelite concentrate were increased from per cent to per cent and from per cent...
as raw materials for production of spaceflight, cement and so on. But the separation of scheelite and calcite is a difficult issue in flotation, which is the common method to separate them. However, the difficulty of flotation of scheelite from calcite is due to the existence of the same cation in the minerals
We have scheelite concentrate with some amount of zircon, which rises radioactivity above desired limits. Our last operation in producing scheelite is flotation of sulfides, which we carry out under pH=23. We are struggling to find a way to separate (float) zircon into froth product without dragging too much scheelite with it.
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 scheelite remained at 85%. The interaction mechanisms
Utilization of Sodium Hexametaphosphate for Separating Scheelite from Calcite and Fluorite Using an Anionic–Nonionic Collector Article (PDF Available) in Minerals 9(11):705 · November 2019 with ...
And the grade of concentrates does not change much from the one of the feed, which is 50%. It indicates that oleic acid cannot effectively separate scheelite from calcite when these two minerals coexist. This is consistent with the fact that some depressants are required when oleic acid is used as collector in the flotation practice of scheelite.
Flotation separation of wolframite from quartz using Noleoyl sarcosine acid as collector The effect of pH on the flotation performance of wolframite and quartz with Noleoyl sarcosine acid as collector (100 mg/dm3) was investigated and the results are shown in Fig. 1. It can be seen from Fig. 1 that the optimal flotation pH for wolframite was 7
Separating scheelite from calcite flotation tungsten collector separating scheelite from calcite flotation tungsten collector selective flotation of scheelite and calcite email protected the most difficult problem in scheelite flotation is not the removal,Separating Scheelite From Calcite Flotation Tungsten Collector.
The flotation separation of scheelite from calcite using sodium oleate as collector and acidified sodium silicate as depressant has been studied. The results show that sodium oleate has collecting ability to both scheelite and calcite and the flotation separation of scheelite from calcite cannot be realized if collector is used only.
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 scheelite remained at 85%.
Mar 01, 2015· Read "Selective flotation of scheelite from calcite and fluorite using a collector mixture, Minerals Engineering" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Jun 01, 2019· Yan et al reported the use of the mixed collector OPS/BHA to achieve flotation separation of scheelite and calcite (Yan et al., 2017). However, flotation separation of scheelite from calcite is not achievable only using a mixed collector OPS/BHA, and depressant water glass is .
Therefore, most of current research on scheelite flotation is focused on separating scheelite from calcite and other calciumbearing minerals such as apatite or fluorite. Said separation will not be obtained by varying the pH, as responses are similar . This was already evoked in previous paragraphs as many new collectors are being (or have ...
Yuehua Hu, F. Yang, W. Sun, The flotation separation of scheelite from calcite using a quaternary ammonium salt as collector, Minerals Engineering, Vol. 24, No. 1, 2011 P. Ning, H. Cao, Y. Zhang, Selective extraction and deep removal of tungsten from sodium molybdate solution by primary amine N1923, Separation and Purification Technology ...
Figure 5 reveals the flotation behaviors of scheelite, calcite, and fluorite at different SHMP doses. Unlike the results of previous studies that used a single sodium oleate as the collector [2 ...
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