— Coal slime is a by product of the coal washing process However it is difficult to utilize it effectively in actual production because of its fine particle size high moisture content high viscosity and low calorific value the high price of wave absorbing materials and catalysts significantly increases resource consumption and total
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— The new flotation promoter PGS was synthesized with natural cottonseed oil and industrial by products and the new emulsified flotation agent ZFC for coal was prepared by 3% PGS promoter 27% diesel oil and 70% water The ZFC and diesel oil were used as collector to do the flotation rate experiments with two 1/3 coking coal samples
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— The interval time 25 s presented the fastest settling velocity The floc amount in supernatant roughly decreased as the zeta potential increased The settling velocity decreased with the settling time The results can provide valuable insight into the development of technology for coal slime sedimentation
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— A coal slime sample from Henan province China was collected as the flotation feed in this experimental study The proximate analysis results of the coal slime sample are summarized in Table coal slime has an air dried moisture M ad of % an ash content A d of % a dry ash free volatile matter V daf of % and an air
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— A modification coarse coal slime separation process used three stage cone water only cyclones TWOCs as the main separating equipment was designed and evaluated for Lv jiatuo coking coal preparation plant Laboratory experiment was performed to guide the parameters determination of the industrialness TWOC The industrialess
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<p>Establishing the correlation between the complex microscopic pore structure characteristics of the filter cake and the macroscopic seepage behavior is an important basis for solving the difficulty of coal slime dewatering In order to characterize the pore structure of the filter cake accurately four main minerals in the coal slime such as clean coal
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— accumulation of a large amount of coal slime would cause soil pollution and the air dried coal slime also would cause dust in the air [3 4] At present the usage of coal slime can be divided into the following three categories [5 7] 1 Co combustion Due to the high moisture content of coal slime the co combustion
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— Interaction between dispersant and coal slime added in semi coke water slurry An experimental and DFT study Author links open overlay panel [10] Due to the characteristics of large output low price and low pollutant emission the semi coke is gradually considered as an environmentally friendly household fuel in many areas [11]
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— The fine coal slime was collected from Bucun coal mine at Jinan China and the results of its proximate analysis are listed in Table specified mass of coal slime was initially weighed out and then spherical particles of different sizes 30 40 50 and 60 mm were to this preliminary tests were carried out to obtain the relationship
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In order to increase the utilization of coal slime realize efficient utilization of resources and protect the environment the feasibility of anaerobic fermentation technology employing coal slime was explored The biodegradation of coal slimes and its influence on the utilization characteristics w
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— Concentrated coal slime serves as a clean and promising fluid fuel and is commonly employed via pipeline transportation Currently there are still limitations in understanding the rheological properties of coal slime including its yield stress viscoelasticity and the impact of factors such as temperature on these properties
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— Coal slime CS is a solid waste product of the coal washing process However it is difficult to effectively utilize in actual products because of its high moisture content high viscosity and low calorific value However the high prices of absorbent materials and catalysts significantly increase the resource consumption and total cost
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