Characteristics of an improved collector derived from a waste of coal-processing plant for the beneficiation of Indian coking coal fines by froth flotation

Chaudhuri, Sanjay; Sen, Raja; Gouricharan, T.

doi:10.1080/19392699.2017.1319362

Cited by 3 publications

(2 citation statements)

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“…Froth flotation is the most efficient and cost-effective separation method for particles within a narrow size range, normally from 50 µm to 600 µm for coal and exploits the differences in surface properties [1][2][3][4][5][6]. Froth flotation is a universally accepted physicochemical process for the beneficiation of coal fines [7]. Its separation efficiency depends on the wettability difference between the coal-rich and mineral-rich particles of the coal slurry in the flotation circuit.…”

Section: Introductionmentioning

confidence: 99%

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Fine coal beneficiation by pilot column flotation

Vasumathi¹,

Vijayakumar²,

Prasad³

et al. 2018

J Min & Metal A Mining

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Beneficiation of coal fines with high ash content was attempted in an operating coal preparation plant by retrofitting a 0.5 m diameter pilot plant scale flotation column in the circuit. The collector and frother dosage were optimized as 0.680 kg/t and 0.058 kg/t respectively. At these reagent conditions the operating parameters of pilot scale flotation column were also optimized. The maximum yield of the froth obtained was 67.5% at the targeted ash level of 14% from a feed of 25% ash content. This was obtained at the operating parameters of 0.85 cm/s superficial air flow velocity, 0.57 cm/s superficial feed slurry velocity and 600 mm froth height. The performance of flotation column was found to be marginally better than that of the conventional flotation cells in the washery. Also, advantages such as low operational, maintenance and energy costs and operational flexibility in the case of flotation column could lead to financial accruals over a long run.

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Section: Introductionmentioning

confidence: 99%

“…Its separation efficiency depends on the wettability difference between the coal-rich and mineral-rich particles of the coal slurry in the flotation circuit. Generally, the coarse coal has good selectivity, but the flotation rate is slow [7]. Coal flotation makes use of the natural hydrophobicity of the carbonaceous matter in coal [8].…”

Section: Introductionmentioning

confidence: 99%