The chemical analysis results of scheelite, calcite, and fluorite are presented in Table 1, and their purity are 96.08%, 98.36%, and 99.31%, respectively. The X-ray diffraction (XRD, Rigaku D/max 2500, ... The concentrate and tailing products were filtrated, dried, and weighed to calculate the recovery using the Eq. ...Web

Fluorite tailing 72.00 7.64 0.13 5.34 1.04 0.30 2.58 0.07 7.83 The XRD patterns of the blast furnace slag and fluorite tailing are shown in Figure 1 . As typical water-quenched slag, there are no ...Web

4) and fluorite (CaF 2), which can be removed by grinding and reverse flotation fluorite to obtain a high-grade iron concentrate. The REO grade of magnetic separation tailings is 11.98 %, and its recovery rate is 97.96 %. Consequently, rare earth can be effectively extracted and separated after the subsequent flotation-leaching process ...Web

The main components of fluorite tailing are SiO 2 and CaF 2, which have been proven to be effective in crystallization by reducing the viscosity of the crystallizing …Web

The main component in fluorite tailings and waste glass is SiO 2, with composition ranging from 70 % to 75 %. This indicates that fluorite tailings and waste …Web

The invention discloses a beneficiation method for multi-impurity low-grade refractory fluorite tailings, which comprises the following steps: a. making the tailing ore into ore pulp with the fineness of-200 meshes accounting for more than 90 percent; b. roughing is carried out at normal temperature to obtain rough concentrate with fluorite grade of 60%; c. one …Web

A tailing with 48.01% of fluorite and 3.78% of calcite was produced and further processed to obtain a high grade fluorite concentrate. Those results indicate that using this novel reagent scheme can …Web

The selective separation of scheelite from fluorite is difficult because of their similar surface properties. In this study, diethylenetriaminepentaacetic acid (DTPA) was used as a novel depressant for the efficient removal of fluorite from scheelite, and its depression effect and mechanism were systematically investigated by conducting micro …Web

Table 3 shows the main minerals with different magnetite properties; it can be seen that the main rare earth minerals in the ore samples are bastnaesite and monazite, which are both paramagnetic minerals; magnetite and hematite are ferromagnetic minerals, and other iron-bearing minerals exhibit paramagnetic properties. Gangue minerals …Web

The effects of fluorite powder dosage, particle size, ... (XRF), and the results are given in Table 1. The main chemical elements in serpentine tailings were Mg and . ... The results showed that the thermodynamic reactivity of brucite in the tailing was the highest, while that of magnesite was the lowest. ...Web

The pH was adjusted with NaOH or HCl stock solutions. Deionised water was used throughout the flotation experiments of the pure materials. Tables 1 and 2 summarise the contents of the ore and phases of tungsten minerals found in Shizhuyuan Mine. The tungsten minerals are scheelite and wolframite, which are associated with garnet, …Web

Fluorite flotation tests were carried out with the actual and new schemes. Fig. 2 showed the photographs of the tailing slurries after being settled for 96 h from the flotation test with the actual scheme and being settled for 2 h from the test with the new scheme. With the actual scheme (Fig. 2 a), 96 h of sedimentation did not produce clarified water in …Web

Mineral liberation by free surface of xenotime in cleaner circuit (A) tailing and scavenger tailing. X-axis indicate liberation classes in 10% steps, e.g <10% means: particles with 0-10% of ...Web

The samples used for the ζ potential, FTIR, and XPS tests were obtained by grounding the − 37 μm fractions to approximately 5 μm. The compositions of fluorite and barite were identified by XRD (X-ray diffraction) and further examined with single element assay (Fig. 1 and Table 1). The results indicated that the sample purities were very ...Web

The addition of ferrous sulfate as a depressant for Ca-bearing minerals such as calcite and fluorite during scheelite flotation was investigated to recover scheelite from tungsten mine tailings, using Hallimond-tube flotation tests, zeta-potential measurement and Fourier-transform infrared (FT-IR) analyses. The flotation tests indicate that the …Web

The tailing composed of various mineral matters, such as calcium, silicon, iron, rare earth compounds and fluorite. Apparently, it is considered to be quite appropriate to produce a glass–ceramic [1], ... It is derived by Table 1 that the addition of the tailing causes a decrease in T p and T g.Web

On-stream mineral identification of tailing slurries of tungsten via NIR and XRF data fusion measurement techniques . Qingya Wang, abc Fusheng Li ... such as scheelite and fluorite or gangue minerals, since they have different flotation properties. The primary focus of this research is the measurement of mineral contents from the elemental ...Web

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A similar effect was found in tests which varied the oleic acid collector dosage. To achieve optimal flotation performance, it was suggested to decrease collector dosage when the temperature rises ...Web

The tailing area covers 11.5 km2, with 150 million tonnes of tailings, of which approximately 9.3 million tonnes are REE tailings. [5] About 90% of the mined deposit was stored in the Weikuang tailing dam owned by the Baotou Iron and Steel Group (Baogang Group), 12 km away from Baotou city where about 2.65 million people live and 5km from ...Web

A kind of method reclaiming barite from fluorite mine tailing, comprise the steps: to use prodan to make mine tailing dispersant, then use high frequency fine screen by mine tailing classification, mine tailing after classification uses shaking table carry out gravity treatment more respectively and reclaims to obtain the barite hair rough concentrate of size …Web

Fluorite ore resources are widely distributed in South Africa, Mexico and China, and their total reserves exceed 240 million tons [1]. Fluorite tailing is a typical industrial solid waste generated during the fluorite ore flotation process and is mainly composed of CaO, SiO 2, Al 2 O 3 and CaF 2. The inappropriate disposal of fluorite …Web

The invention discloses a kind of method that fluorite is reclaimed from white Tungsten tailing, this method mainly uses the united technique of gravity-floatation, first by the table concentration technique of thick four essence, is stripped of scheelite, barite mineral in white Tungsten tailing, is enriched with fluorite mineral；Then the floatation process swept by …Web

This paper reviews the achievements of many scholars, introduces the reserves, distribution and characteristics of fluorite resources and rare earth associated …Web

In turn, the upper tailing unit of Las Moreras shows much lower pH values (2.8–5.6), due to the sulfide content and the complete absence of calcite. 4.2.3 Waters The composition of leakage sample waters of a restored mine pond (Mina Concepción) indicates that these waters represent acid mine drainage, as reflected by their very low pH (<2.6 ...Web

tailings contain from 13 to 23% fluorite, 12-14% calcite. The characteristic is given to the technological features of raw materials. The fluorite grains present in the technogenic …Web

On completion of flotation, the concentrate and tailing were gathered, dried in the oven separately, and then assayed the WO 3 content to calculate the recovery. Fig. 3. The flowsheet of condition tests. ... calcite and fluorite) are displayed on Table 9. As shown in Table 9, the adsorption amount of mixed collector on scheelite (5.74 × 10 ...Web

Fluorite is the principal mineral of fluorine and usually coexists with quartz in deposits. The removal of fine quartz in fluorite concentrate is the main problem in fluorite flotation. In this study, the flotation tests on fluorite, quartz and a weight equivalent mixture (all less than 10 μm) using water glass (with different modulus) as depressants and …Web

been carried out to establish environmental impacts of fluorite mining industry on topography and land cover. The objectives of the study were to; determine the trend andWeb

In the flotation of semi-soluble minerals such as calcite and fluorite, Ca2+ is one of the common dissolved components influencing the collector adsorption behaviors on the mineral surfaces. However, there is very limited research focusing on how the dissolved Ca2+ affects the separation of fluorite and calcite. In the study, with sodium oleate …Web

The development and utilization of associated fluorite resources can effectively alleviate the problems of low grade and insufficient reserves of single fluorite deposit. Fluorite is widely ...Web

Numerous experimental measurements of the fluorite solubility constant in water have been conducted, and a compilation of fluorite pK sp θ values can be seen in …Web

Currently, approximately 1.4 billion tons per year of iron ore tailing wastes (IOT) are generated, mainly in Australia, Brazil, and China. This work describes the characterization and application ...Web

A chemical analysis of the serpentine tailings was performed by X-ray fluorescence (XRF), and the results are given in Table 1. ... The results of the XRF and XRD analyses of the sample fluorite powders are listed in Table 2 and Fig. 2, respectively. ... Decreasing the particle size increases the specific surface area of serpentine tailing ...Web

Analyzing the pollution level and ecological risk of heavy metals in tailings is a necessary step for conducting revegetation after a tailings pond's closure. Herein, we determined the heavy metal pollution status and ecological risk in one low-grade copper sulfide tailings pond using chemical and mineralogical analysis, chemical extraction, and …Web

PDF | On Nov 30, 2020, Limin Zhang and others published Cassiterite recovery from a sulfide ore flotation tailing by combined gravity and flotation separations | Find, read and cite all the ...Web