No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
This paper systematically investigated the leaching behavior of bauxite lithium-rich beneficiation tailings in caustic solution, together with their phase and morphological changes. The main chemical compositions (mass percent) of bauxite flotation tailings were 40.56% Al2O3, 34.00% SiO2, 4.34% K2O, 3.31% TiO2, 1.83% Fe2O3, 0.37% MgO, and 0.59% Li2O. The …
The mechanical strength of high strength gypsum prepared from PG concentrate was significantly better than that of raw PG, indicating that flotation purification can effectively improve the ...
The recovery of zinc from a flotation tailing using 17-different leaching agents, including inorganic and organic acids, alkaline solutions and chelating agents, was investigated. ... gypsum, and goethite in this lixiviant. It was seen that the addition of oxidants in sulfuric acid solution slightly increased zinc dissolution. The citric acid ...
The ore samples used in this study were obtained from a low-grade phosphorus-containing iron tailing. The tailing samples were mixed using a mechanical agitator for 20 min to ensure homogeneity. Representative samples were collected for the flotation and mineralogical analyses of raw ore. The chemical compositions of the ore are listed in Table 1.
The surface of gypsum crystals after flotation purification is clean and smooth. ... Tailing 1: 2.83: 73.50: 2.49 / Tailing 2: 23.23: 42.63: 11.86 / Raw PG: 100.00: 83.48: 100.00: 33.23: As shown in Table 2, the purity of CaSO 4 •2H 2 O in the PG concentrate is increased from 83.48% to 96.70%, and the whiteness of PG concentrate is increased ...
As the sample tested was a tailing from the industrial plant, it contained a great amount of natural fine particles. Slimes – both the natural slimes and those developed during processing – made flotation unfeasible. Adding further steps of scrubbing and desliming prior to flotation solved this problem.
Organic impurities can be removed by conventional flotation. This process includes pouring phosphogypsum and water into flotation equipment in the right proportions and using the natural floating of organic impurities to …
Large-scale application of filled coal mining technology has long been limited by conditions such as the cost of filling. Compared to traditional filling materials, coal flotation tailing filling materials (CFTFM) offers advantages …
A large amount of organic matter and fine slime in the phosphogypsum were removed by reverse flotation, and gypsum was floated by positive flotation. ... Phosphorus ore flotation tailing (POFT ...
For the flotation of gypsum-containing raw, fatty acid reagents are commonly used (Bulut et al. 2008; Matsuno et al. 1958). We proposed a new flotation reagent perlastan ON 60 to isolate the ...
The underground extraction of Pb-Zn mineralization in the Touiref area stopped in 1958. A large volume of flotation tailings (more than 500 Mt) containing sulfides were deposited in a tailings impoundment. The goals of this study are to evaluate the neutralization capacity of the unoxidized and oxidized tailings, to assess the speciation of metals between the different …
At the Jhamarkotra rock phosphate mines, the lowgrade Proterozoic rock phosphate containing 14–19% P2O5 is beneficiated by froth flotation process to produce beneficiated rock phosphate having 32–34% P2O5, to provide raw …
For instance, the flotation process is performed with water containing 25–35% wt solid ratio and is consumed 1.9–3 m 3 water per ton of ore processed (Gunson et al., 2012; Li et al., 2019). However, the tailing slurry containing roughly 40–60% solids is discharged as a result of the process (Bleiwas, 2012). The primary environmental ...
Six of the eight tailing dams presented very high pollution levels (21.28 < IC < 298.61), indicating a severe contamination risk. ... In conjunction with gypsum and jarosite, ... resulting in a high correlation. Another factor, …
and roasting steps. 83.1% Z n and 91.6% Cd leaching effici encies were obtained from Pb-Zn flotation tailing particles with the size range of 50-110 nm from AFM image c ross-sections, while lead ...
In this study, a flotation tailing from Wulagen zinc mine in China (Zn grade < 1%) was processed using froth flotation with combinations of amines (OPA 10, OPA 1214, OPA 13, DDA) and Na2S to study ...
Recovering valuable metals from tailings not only provides a source of income but also helps conserve natural resources, thus reducing the environmental impact of mining activities. This study aimed to recover cobalt using tailings of the Küre flotation plant, which were determined to contain 0.17% Co. Flotation tests were conducted on samples taken from the …
Flotation behaviour of pure minerals, celestite and gypsum was investigated using oleate and sulphonate as collectors in a Hallimond tube. The zeta potential values of both minerals were...
Gilsonite has a wide variety of applications in the industry, including the manufacture of electrodes, paints and resins, as well as the production of asphalt and roof-waterproofing material.
Via the closed-circuit flotation process, the whiteness of the PG concentrate is improved from 33.23 to 63.42, and the purity of gypsum in the PG concentrate increases from 83.90% to 96.70%, with ...
In this paper, PG was purified by flotation method, and α-hemihydrate gypsum (α-HH) was prepared by the autoclaving method. The morphology of α-HH was adjusted by …
A large amount of tailing from the flotation processing of pyrite ore are accumulated and landfilled, resulting in serious environmental pollution and a waste of valuable elements such as Al, Ti, Si, etc. Aiming to extract alumina from coal-derived pyrite flotation tailing, the process has been proposed based on activation roasting-alkali leaching for desilication, followed by alumina ...
PDF | On Jan 1, 2021, Delia-Georgeta Dumitras and others published Preliminary mineralogical study of the flotation sand from the Tăuşani tailing pound (Moldova Nouă, Romania) | Find, read and ...
Development of technology for obtaining high-strength gypsum from the gypsum-containing waste of sulfuric production-tails of flotation, which required investigation of the …
Tailing, in context to mining, is defined as the waste or non-economic by-product generated during mining activities, processing of minerals, and other materials that contain small amounts of residual valuable minerals, chemicals, water, and heavy metals (Adiansyah et al. 2015).Studies indicated that the process of mineral exploitation and utilization generated a …
Due to the similarity with raw materials used in construction and building materials (e.g., bricks, tiles, cement, gypsum, fillers, and aggregates), ... Submarine and deep-sea mine tailing placements: a review of current practices, environmental issues, natural analogs and knowledge gaps in Norway and internationally.
Precipitation and solvent extraction were used to recover Pb and Zn from a citric leach solution of a non-sulfide flotation tailing. The Pb was precipitated from the citric acid leach solution at pH 1. PbSO 4 (anglesite) and CaSO 4 (gypsum) were identified as the precipitates. Sulfate precipitation was shown to be an effective method for ...
At the Jhamarkotra rock phosphate mines, the lowgrade Proterozoic rock phosphate containing 14-19% P2O5 is beneficiated by froth flotation process to produce beneficiated rock phosphate having 32 ...
Phosphogypsum (PG) is a massive industrial solid waste. In this paper, PG was purified by flotation method, and α-hemihydrate gypsum (α-HH) was prepared by the autoclaving method. …
Mining is an important industry, accounting for 6.9% of global GDP. However, global development promotes accelerated demand, resulting in the accumulation of hazardous waste in land, sea, and air environments. It reached 7 billion tonnes of mine tailings generated yearly worldwide, and 19 billion solid tailings will be accumulated by 2025. Adding to this, the …
