Medialan has preferable flotation performance to wolframite, under the conditions of the best flotation pH value 7.0 and low dosage, wolframite recovery is up to 80 %. Medialan shows poor flotation performance to quartz, but better to fluorite and calcite. However, fluorite and calcite are inhibited in a certain degree by adding medialan …
The flotation experiments for binary mixed ore showed that the final wolframite concentrate product with a WO 3 grade of 58.82% and recovery of 80.46% was obtained by 2 × 10-4 mol/L DPA collector at pH 7, while using the traditional sodium oleate (NaOL) collector, the concentrate with a WO 3 grade of 33.9% and recovery of 73.82% …
The results showed that with an increasing Fe/Mn ratio, the flotation recovery of wolframite increased when using benzohydroxamic acid (BHA) as collector, …
Flotation wolframite" to recycle real fine wolframite slime samples in a wolframite slime workshop, examined the influences of ... grade of fine wolframite slime ore, the grade of wolframite concentrate was increased by 15.22% through new process than ... concentration 62.90% and recycling rate of 86.01% via flotation operation, while new ...
The samples of wolframite and quartz were collected from Xihuashan Mine, Jiangxi province and Ningxiang, Hunan province. X-ray diffraction (XRD) analysis and particle size distribution of wolframite and quartz designated for the flotation test were given in Fig. 1.And their X-ray fluorescence spectrometer (XRF) results were shown in …
investigations have been performed regarding wolframite flotation using different collectors. Meng et al. (2015) assessed the flotation performance of wolframite in the presence of octyl hydroxamic acid and investigated the interaction of octyl hydroxamic acid (OHA) with wolframite by solution component measurements and surface chem-
Wolframite is the principal and primary ore mineral of tungsten, and commonly associated with the tin ore in and around granite country rocks. Wolframite is an iron manganese tungsten oxide {(Fe.Mn)WO 4} mineral.The mineral crystallizes in monoclinic system with perfect cleavage, and occurs as massive dark gray to brown-black color and submetallic …
Pre-concentration is effectively applied in recovering wolframite from tungsten ore, due to its benefits of further upgrading tungsten ore and improving separation efficiency.
2.2. Single Mineral Flotation . The above -mentioned wolframite pure mineral was regarded as the flotation raw ore. Flotation was carried out in a 30 mL XFGC hanging tank flotation machine (Type II, Jilin Exploration Machinery Plant, Jilin, China)with a spindle speed of 1992 r/min. An amount of 2 g wolframite was used for each test.
Abstract: In order to improve the recovery of tungsten ores containing tin minerals, anisic hydroxamic acid (p-methoxy benzohydroxanic acid, PMOB) was synthesized and …
DOI: 10.1016/J.SEPPUR.2021.119122 Corpus ID: 236232086; Froth flotation separation of lepidolite ore using a new Gemini surfactant as the flotation collector @article{Huang2021FrothFS, title={Froth flotation separation of lepidolite ore using a new Gemini surfactant as the flotation collector}, author={Zhiqiang Huang and Shuyi Shuai …
Fig. 9 shows the effect of collector concentration on the flotation of wolframite, quartz and fluorite at pH 7.0. The collector concentration has a remarkable impact on the flotation recovery of wolframite and fluorite, but less on quartz. ... Investigations on reverse cationic flotation of iron ore by using a Gemini surfactant: …
1. Introduction. At present, world's reserves of tungsten are estimated to be 3 × 10 6 t [1].China, the most rich country in tungsten resources, has about 40% of the world's reserves of tungsten [2].Most of tungsten ores, particularly wolframite and scheelite of industrial interest, occur in the deposits with very low content of WO 3 (0.1–2.5%) that is …
A cationic surfactant DOPA was designed and first applied in wolframite flotation.. At low dosage, DOPA possessed excellent collecting ability to wolframite in wide pH range. • DOPA exhibited superior selectivity to fluorite and calcite than DDA and BHA.. DOPA could interact with wolframite via chelation besides electrostatic attraction.
Abstract: Flotation behavior and adsorption mechanism of octyl hydroxamic acid (OHA) on wolframite were investigated through flotation experiments, adsorption tests, zeta …
The use of 4-tert-butyl benzoyl hydroxamate resulted in a best flotation performance for ilmenite. A relatively low cyclohexyl hydroxamate dosage was required in the flotation …
In virtue of the poor hydrophobicity for wolframite, the surfactants (often called as collectors) play a significant role in enhancing surface hydrophobicity and achieving effective separation of wolframite against gangue ores, which have received …
2.3.2 Batch flotation experiments The wolframite-scheelite mixed ore containing cassiterite was obtained from Shizhuyuan multi-metal mine in Hunan Province, China. The chemical analysis results are shown in Table 1. The flotation process is shown in Figure 3. The crudes were ground (−0.074 mm, 90%) and
Wolframite concentrate is mainly recovered through gravity and magnetic separation, but fine particles fraction has suffered substantial losses, especially for the particles below 20 μm (Srivastava and Pathak, 2000; Bhagat and Pathak, 1996). Therefore flotation becomes an important method for fine-grained and complex wolframite ore …
In the artificial mixed ore flotation test, wolframite and calcite were mixed in a 1:1 mass ratio and the flotation method was the same as in the single minerals test. ... Then it was added with the collector of the best flotation concentration and stirred for about 10 min to prepare for the test. 0.1 mol/L KNO 3 electrolyte was added for each ...
under the conditions of maximum flotation. Key words: wolframite; adsorption; hydroxamate; flotation 1 Introduction Wolframite is the most important tungsten-bearing mineral, which has been mined and processed for a century in China. Because of its crispness property, wolframite slime produced in the comminution process
Semantic Scholar extracted view of "Study on the role of a hydroxamic acid derivative in wolframite flotation: Selective separation and adsorption mechanism" by Yuxi Lu et al. ... synthesis and its use in reverse flotation of iron ore. Zhiqiang Huang Shiyong Zhang +9 ... of wolframite was investigated. The studies include flotation of pure ...
The application of alkyl phosphoric acid ester for the flotation of wolframite was investigated. The studies include flotation of pure wolframite as a function of pulp pH, surfactant concentration ...
Figure 3 Flotation recovery of ilmenite as a function of the concentration of hydroxamates Small-scale flotation of wolframite Small-scale flotation was carried out with a high purity sample of wolframite and the modifier lead nitrate. Figure 4 shows the flotation flowsheet reveals the order of reagent addition, their dosage and the
Scheelite (CaWO4) and Wolframite ((Fe,Mn)WO4) are the principal minerals of tungsten, but other important minerals include ferberite (FeWO4) and huebnerite (MnWO4) will also respond to froth …
The green and eco-friendly flotation process to enrich wolframite under lead-free pulp is an attractive issue, which is promising to be broken through an innovative oxidation flotation approach with H 2 O 2 and N-[(3-hydroxyamino)-propoxy]-N-hexyl dithiocarbamate (HAHD).The flotation results indicated that in comparison to the …
ABSTARCT Wolframite is a series of minerals belonging to the isomorphic (Fe, Mn)WO4 with varied Fe/Mn ratios, for which the floatability changes with its composition. In this work, the effects of composition on floatability were studied using micro flotation, collector adsorption tests, infrared spectroscopy, and X-ray photoelectron …
Flotation behavior and adsorption mechanism of octyl hydroxamic acid (OHA) on wolframite were investigated through flotation experiments, adsorption tests, zeta-potential measurements, infrared spectroscopy and solution chemistry calculations. Results of flotation and adsorption experiments show that the maximum values of flotation …
DOI: 10.1016/J.JIEC.2021.03.014 Corpus ID: 233638021; New insights into separating wolframite from calcium bearing minerals by flotation @article{Lu2021NewII, title={New insights into separating wolframite from calcium bearing minerals by flotation}, author={Yuxi Lu and Shuai Wang and Hong Zhong}, journal={Journal of Industrial and …
In upgrading lean tungsten ore, gravity concentration by jigging of vein quartz produced a pre-concentrate containing 4.5% WO 3. ... (gravity separation) of sulphides to Wolframite is <2, flotation was employed to remove sulphides. Two stage flotation of −200# deslimed sample was conducted at pH value of 4 and of 9 to remove …
