The Gol-E-Gohar iron ore company thickener feedwell was a conventional 4.8 m (diameter) × 1.2 m (depth) feedwell. Because of the high shear r ate in the feedwell and inefficient f eed and ...
The tailing of the iron ore beneficiation plant (containing 17% iron) at a mass flow rate of 300–350 t/h in slurry form with 5–8% w/v solids% is usually dewatered in two parallel thickeners (D = 55 m, H = 6.6 m). ... Therefore, based on a plot thickener with sufficient height (113 cm) and the pipeline flocculation device, the evolution of ...
Birds eye view of the 3 x DELKOR high-rate thickeners. March 23, 2021. The project concerns the design, engineering and supply of 3 x DELKOR 62 m high-rate …
The slurry settling characteristics are the most important to design a thickener in process industries. In this work, the iron ore slurry from the screw classifier …
To this end, inlet slurry to the tailings thickener of the Gol-e-Gohar iron ore processing plant was sampled for four days. Flocculant type (anionic, cationic, and nonionic polyacrylamide), their dosage (10–90 g/t), pH (1–12.5), solid content (5–23%), and for the first-time residual flocculant dosage in the circulated water were investigated.
The present invention is related to a high aspect ratio column thickener and a process thereof useful for dewatering of iron ore tailings. The column thickener has been developed with multiple feed inlet points and an auxiliary inlet point for water to clear the jam of high concentration slurry, if required. The column also consists of a conical portion at …
PDF | This article displays a thickness comparison between an industrial scale campaign test and some bench scale tests for sedimentation and proposes... | …
Under the condition of the same processing capacity, the diameter of the efficient thickener is only 2/3 to 1/2 of the diameter of the ordinary thickener, and covers an area of about 1/9 to 1/4 of ...
The following examples illustrate the effect of the system consideration on selection of the paste thickener. Iron Ore Tailings. The integration process for the …
The magnetic thickener is often used for dewatering magnetite slurry after the separation procedure. It can also reject some of the light and fine nonmagnetic minerals. ... An iron ore concentrate containing 64.6% Fe can be produced using this flow sheet from a run-of-mine ore containing 51.1% Fe at a mass yield of 69.6% to the iron ore ...
The High-Rate thickeners became popular in the mid 1980's and are relatively newcomers to the sedimentation line of equipment. As already discussed previously Thickeners are a major component in a plant layout and occupy large spaces which may be saved by introducing high-rate machines. Furthermore, they are normally positioned far away from ...
The iron ore thickening process involves the steps of crushing and screening, grinding and classification, hydrocyclone separation and desliming, flocculation, sedimentation, filtration ...
Abstract and Figures. 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 ...
Abstract: The slurry settling characteristics are the most important to design a thickener in process industries. In this work, the iron ore slurry from the screw classifier overflow was used for the settling study. It was observed that the original slurry exhibited a low settling ve-locity and a turbid supernatant during the settling process.
5 Typical applications Thickeners and clarifiers Alumina, Bayer process Potash Coal Blast furnace flue dust Base metal concentrates Flotation tailings Iron ore Gold Copper CCD Nickel laterite CCD Molybdenum concentrate Mineral sands slimes Platinum Uranium
Minor sections of this work were presented at Iron Ore 2021 (Nunna et al. 2021b), but the work therein has been significantly expanded upon. A number of references have been given in this paper to Iron ore: Mineralogy, processing and environmental sustainability, ed. L. Lu. Cambridge: Woodhead Publishing. A second edition of this book …
Figure 1. Conventional thickener. Depending on the configuration of the plant, the type of mineral and the thickener …
Usher, S.P. and Scales, P.J. (2005) Steady state thickener modelling from the compressive yield stress and hindered settling function. Chemical Engineering Journal 111, pp. 253-261.
The iron ore tailings samples were collected in the thickener underflow stream, immediately before being disposed into the Vargem Grande pond (Nova Lima, Minas Gerais, Brazil), as shown in Figure 1.
The following examples illustrate the effect of the system consideration on selection of the paste thickener. Iron Ore Tailings. The integration process for the paste system at a South African iron ore plant identified the following high priority design parameters (du Toit, Crozier, 2012): A greenfield plant; tailings disposal site must be ...
For the red ore that is beneficiated by the flotation process, the use of a high-efficiency thickener can obtain a higher underflow concentration and increase the dehydration rate of the concentrate. 2. Dehydration of iron ore concentrate. The use of inclined plate type high-efficiency thickener has a better dewatering effect.
A pilot scale paste thickener thickened iron ore tailings to underflow solids ranging from 55 to 80 wt%. Deposition tests produced non-settling tailings with slopes ranging from 2 % to 8%.
Keep the worm chamber on the drive mechanism full of oil, and take care of the grease fittings daily. The lifting screw gear ought to be greased well, and it is a good idea to keep grease on the central shaft for about a foot below the worm gear. And don't fall into the thickener; it doesn't look well.
The slurry settling characteristics are the most important to design a thickener in process industries. In this work, the iron ore slurry from the screw classifier overflow was used for the settling study. It was observed that the original slurry exhibited a low settling velocity and a turbid supernatant during the settling process. Commercial …
The trend in this direction started at the late 19th century when heavy duty applications such as iron ore taconites, hematite, coal, aluminum hydrate, copper pyrite, phosphates and other beneficiation processes have grown …
Thickener is a main and fundamental step in modern mining separation processes. In this research, the effect of flocculant consumption rate and feed solid concentration of settling rate of layers was studied with different concentrations in iron ore mine of Jalalabad, Zarand, Kerman, Iran.
To this end, inlet slurry to the tailings thickener of the Gol-e-Gohar iron ore processing plant was sampled for four days. Flocculant type (anionic, cationic, and nonionic polyacrylamide), their ...
Iron ore concentrate was selected as the first application. Feed to the Hi-Capacity Thickener consisted of hematite iron ore concentrate from flotation cells with a size distribution of 92 – 95% minus 325 mesh. The unit was operated by plant personnel for a five month period, demonstrating that the control strategy could function properly and ...
This is why ANDRITZ has put decades of expertise into thickening and clarification systems to provide an efficient and cost-effective solution. 20m in diameter coal high rate thickener. 35m in diameter Pb/Zn tailings - High rate bolted thickener. ANDRITZ thickening and clarification solutions are designed to achieve the highest production …
For example, a tailings stream in an iron ore application could be thickened to 45-50 percent solids Newtonian slurry in conventional or high-rate thickeners. Conversely, the same tailings stream could be thickened to …
Firstly, iron ore was mined and then processed to obtain iron concentrate and high-silica IOTs by the process of crush–grind–screening–gravity separation–magnetic separation [72]. The obtained high‑silicon IOTs contained abundant quartz with a small amount of Fe compounds. To achieve the classification recovery of valuable components ...
The new 2nd Generation Paste Thickener builds on this proven performance with a range of innovative new features. For example, vertical load monitoring with the Smart Rake Lift system means the Outotec Paste Thickener is one of the only systems in the world that can detect early formation of rotating beds, enabling counteractions to be taken early.
The tailing of the iron ore beneficiation plant (containing 17% iron) at a mass flow rate of 300–350 t/h in slurry form with 5–8% w/v solids% is usually dewatered in two …
