The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform
Jingfeng He - One of the best experts on this subject based on the ideXlab platform.
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Flotation intensification of the coal slime using a new compound collector and the interaction mechanism between the Reagent and coal surface
Powder Technology, 2018Co-Authors: Jingfeng HeAbstract:Abstract Flotation Reagents in particular the Flotation collector plays a significant role in the cleaning efficiency of coal slimes in the coal preparation and utilization industry. A new collector (NC) was used to achieve the efficient cleaning of coal slimes. Comparing with the conventional Flotation collector of diesel oil (DO), the higher yields and lower ash contents of clean coal with the higher combustible material recoveries could be obtained using the NC in Flotation. The optimum NC dosage of 500 g/t was acquired through the unit Flotation tests. Fourier transform infrared spectroscopy (FTIR) and contact angle measurement were used to study the interaction mechanism between the Flotation collector and coal surface. The results indicated that the stronger electron-attracting ability of the ester groups than that of the carbon-carbon double bond resulted in the more stable interaction between the NC and coal surface than that between the DO and coal surface. The contact angle of the coal slime wetting with the NC of 67.1° was larger than that with the DO of 62.6°, suggesting the stronger hydrophobicity of the coal slime with the NC than that with the DO. The chemical composition analysis results suggest that the NC belongs to a compound Flotation Reagent, which provides an alternative high-efficient collector for coal Flotation industry.
Zhu Yimin - One of the best experts on this subject based on the ideXlab platform.
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The Devolopment of Flotation Reagent in 2011
Nonferrous Metals, 2020Co-Authors: Zhu YiminAbstract:This paper collects part of information in relation to Flotation Reagents,and introduces them with brief comments from four aspects of sulfide collectors,oride collectors,isomerism principle of Flotation Reagent,regulation Reagents.
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The Development of Flotation Reagents in 2010
Nonferrous Metals, 2020Co-Authors: Zhu YiminAbstract:This paper collects part of the information at home and abroad in relation to Flotation Reagents,and introduces its development with brief comments from four aspects of sulfide collectors,oxide collectors,isromerism principle of Flotation Reagent,regulation Reagents.
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The application of Flotation Reagent isomeric principle in study of mercaptan collector
Nonferrous Metals, 2020Co-Authors: Zhu YiminAbstract:N-dodecyl mercaptan is a good molybdenite collector,but its price is expensive.Tert-dodecyl mercaptan is the isomer of n-dodecyl mercaptan with a lower price.They have the same molecular formula and functional group,and the only difference is tert-substituted position.Thus,they are in the same series of isomeric body.According to Flotation Reagents isomeric principle,they should have a very similar performance as the collector for molybdenite.However,the use of n-dodecyl mercaptan is frequently reported in literature,while the use of tert-dodecyl mercaptan is seldom reported.It is suggested that tert-dodecyl mercaptan instead of n-dodecyl mercaptan be used as a molybdenite collector,which can save the cost of mineral processing Reagent.
Yaoli Peng - One of the best experts on this subject based on the ideXlab platform.
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application of compound Reagent h511 in the Flotation removal of unburned carbon from fly ash
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2020Co-Authors: Yijiang Li, Long Liang, Zhiwei Hu, Huaizhi Shao, Kanghao Zheng, Yaoli PengAbstract:Abstract This article aims to study the effect of Flotation Reagent H511 on the removal of unburned carbon (UC) from fly ash. The gas chromatography/mass spectrometry revealed that the main components in H511 were cyclohexanol, d -limonene, longifolene, and 2-cyclohexylidene-cyclohexanone. It is found that the H511 could reacted with the UC surface through zeta potential tests. The induction time indicated that the H511 had a greater positive effect on the adhesion between UC particles and the bubble than diesel. The froth property test indicated that the Flotation pulp treated by the H511 had great froth stability due to the effect of cyclohexanol in H511. The Flotation showed that the carbon removal rate of H511 was approximately 60 % higher than that of the diesel/sec-octyl alcohol. Fly ash particles with loss on ignition less than 8% can be obtained by H511. This study have great influence for removing UC from raw fly ash and obtaining high-quality, low loss on ignition (LOI) fly ash resources.
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effect of Flotation Reagent adsorption by different ultra fine coal particles on coal Flotation
International Journal of Mineral Processing, 2015Co-Authors: Yaoli Peng, Long LiangAbstract:Abstract The impact of ultra-fine coal particles on the Flotation of coarse coal particles is investigated in this work. Flotation experiments of three coal samples were conducted. The results showed that the recovery of coarse coal particles (> 74 μm) decreases when low-ash ultra-fine coal particles are added into coal samples, whereas the addition of high-ash ultra-fine coal particles has very slight impact on it. Measurements of contact angle and wetting heat were conducted to examine the interaction between ultra-fine coal particles and Flotation Reagents. The results showed that low-ash ultra-fine coal particles have very strong adsorption to both collector and frother, whereas high-ash ultra-fine coal particles have strong adsorption to collector but weak adsorption to frother, which indicates that frother may play a more important role in the recovery of coarse coal particles.
Wang Xiao-ku - One of the best experts on this subject based on the ideXlab platform.
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Application of Flotation Reagent dosing automatic control system in Datun coal preparation plant
Coal Preparation Technology, 2020Co-Authors: Wang Xiao-kuAbstract:According to the problem existed in Flotation agent adding system at Datun coal preparation plant,presents the new Flotation Reagent control scheme based on the reformed Flotation process.After the new control system put into operation,it is reduced the labor intensity of workers,improved the level of automatic operation,increased the ash content of tailings and clean coal yield,and improved the economic benefit of the coal preparation plant.
Wang Rui-hong - One of the best experts on this subject based on the ideXlab platform.
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The study of automatic control system of the Flotation Reagent
Coal Mine Machinery, 2020Co-Authors: Wang Rui-hongAbstract:According to the stable control of adding density as well as the discharge and to the best control of adding quantity of the Flotation Reagent,the automatic control system of the Flotation Reagent is introduced.The application showes that the system was simple,operated conveniently and it worked dependably,consumed lowly.Meanwhile the ash of the clean coal was stable and the precision of the control was high.So the system could meet the requirement of manufacture technology and the economic and social benefits were very great.