coal flotation tank usagee a vendre
A novel coal tar-based collector for effective flotation cleaning
2020.11.10 The high recovery and selectivity of CTB collector for low-rank coal flotation is conducive to the recovery of coal slime waste, promoting the low-cost
More
Coal flotation to satisfy coal quality - ScienceDirect
2017.1.1 During the coal flotation process, high ash coal fines are carried into foam, although process optimization can reduce ash content. This paper suggests an
More
Diverse utilization of surfactants in coal-floatation
A large number of surfactants together with auxiliary additives are used in froth flotation. Herein, we discuss the important surfactants, focusing on the mechanism by which they act in coal flotation processes. Coal and rock
More
Improving Coal Flotation by Classified Conditioning
2017.1.13 Read this article. How to improve coal flotation performance has been examined with a focus on the effect of particle size on flotation conditioning. A coking
More
Clean flotation of fine coal assisted by renewable collector prepared ...
2020.8.18 The flotation kinetics test results of microemulsion collector show that the flotation rate of particles increases with the increase of collector dosage. The first-order
More
Flotation of oxidized coal using coal tar as a new collector
2020.9.16 ABSTRACT. In this study, coal tar, an industrial by-product of the carbonization/gasification of coal, was adopted as an economical flotation collector for
More
Study on Size and Density Distribution in Fine Coal
2023.9.18 Size and Density Distribution in Fine Coal Flotation 101 some coal=mineral combination; the ash content of þ1.60g=cm 3 density level is not high, indicating that
More
Kinetics of Flotational Enrichment for Coal with Elevated
2022.5.17 The full factorial experiment indicates that, in the flotation of coal with an initial ash content of 20.8%, the maximum concentrate yield (90.38%) is observed when
More
A classification device capable of being integrated to
2017.8.28 The coal sample for the experiments was collected from the flotation tailing in a coal preparation plant, Shanxi Coking Coal Group, Co. Ltd. The coal samples were
More
Diverse utilization of surfactants in coal-floatation
Given that coal flotation depends on the adsorption of the reagents in the small capillaries of coal by van der Waals forces, it mainly depends on the nature of the pore structure of coal. 41. Oily collectors such as kerosene
More
Enhanced Flotation Separation of Low-Rank Coal
2022.9.15 The efficient flotation separation of low-rank coal is still a difficult problem. The development of a collector is the key to solve the problem. In this study, a kind of mixed collector scheme with a practical
More
Recent advances and conceptualizations in process
2023.1.1 This review summarizes and analyzes the main reasons for the flotation process of coal gasification slag from three aspects (the flotation basis of minerals, difficult flotation, and difficulty of selection). ... 10–Flotation machine, 11–Pressure filter for high carbon products, 12–Concentrated tank, 13–Pressure filter for high ash ...
More
Flotation kinetics performance of different coal size fractions
2020.11.13 The flotation kinetics of different size fractions of conventional and nanobubble (NB) flotation were compared to investigate the effect of NBs on the flotation performance of various coal particle sizes. Six flotation kinetics models were selected to fit the flotation data, and NBs were observed on a hydrophobic surface under hydrodynamic
More
Kinetics of Flotational Enrichment for Coal with Elevated
2022.5.17 Abstract The influence of four factors—the reagent consumption, the pulp density, the content of fine slurry in the coal pulp, and the flotation time—on the flotation of coal fines at MMK-Ugol is studied by means of a full factorial experiment. First-order regression equations are obtained by simulation; the response functions selected in
More
Froth image feature engineering-based prediction method
2021.8.15 At present, control of flotation includes regulation of the density of the flotation feed, the reagent consumption, the air consumption, and the pulp level in the flotation tank (Petukhov V N et al., 2019). The coal products must satisfy the requirements for various applications, the ash content is the most important variable of customer ...
MoreA classification device capable of being integrated to
2017.8.28 The coal sample for the experiments was collected from the flotation tailing in a coal preparation plant, Shanxi Coking Coal Group, Co. Ltd. The coal samples were dried, mixed, subsampled and then packaged for use. A sieving analysis was carried out and the results are listed in Table 1. Table 1 Sieving results of coal sample Size, mm Weight ...
More
Enhancement of Flotation Performance of Oxidized Coal by
2021.11.16 Conventional hydrocarbon oil cannot adhere effectively to oxidized coal, resulting in a low yield of clean coal. In this study, a high-speed homogenizer was used to emulsify LDD (laurylamine dipropylene diamine) and kerosene, which enhanced the flotation efficiency of oxidized coal. The flotation results showed an increase from 4.12% (only
More
Switching and optimizing control for coal flotation process
2017.10.17 Flotation is an important part of coal preparation, and the flotation column is widely applied as efficient flotation equipment. This process is complex and affected by many factors, with the froth depth and reagent dosage being two of the most important and frequently manipulated variables. This paper proposes a new method of switching and
More
Ultrasonic-assisted flotation of fine coal: A review
2019.12.1 Coal flotation is a separation process performed mainly based on differences in surface hydrophobicity between coal and gangue. The flotation reagent can improve the hydrophobicity of coal, and also the adhesion between coal and air bubbles. ... Probe-type ultrasound of 20 kHz frequency and tank-type ultrasound of 25, 58/192
More
The Life Cycle of Water Used in Flotation: a Review
2018.9.27 Due to the limitation of freshwater sources and increasingly stringent disposal standards [13, 74, 79], the minerals industry has attempted to increase water use efficiency, reduce freshwater
More
(PDF) Interfacial Adhesion between Fatty Acid
2022.7.8 The simulation and AFM test revealed the mechanisms of polar fatty acids, and can provide guidance for low-rank coal flotation applications. Molecular structure: (a) low-rank coal model; (b ...
More
Physical and chemical interactions in coal flotation
2003.9.29 Coal flotation is a complex process involving several phases (particles, oil droplets and air bubbles). These phases simultaneously interact with each other and with other species such as the molecules of a promoting reagent and dissolved ions in water. The physical and chemical interactions determine the outcome of the flotation process.
More
Flow field simulation of agitating tank and fine coal
2016.3.10 The flotation of fine coal is a key issue in the field of coal processing. Lots of work has been done to improve fine coal flotation efficiency, and many achievements have been obtained in the field of flotation agents and equipment (Erol et al., 2003, Dey et al., 2014, Jena et al., 2008, Zhang et al., 2013, Reddy et al., 1988).
More
Effects of energy consumption on the separation
2013.11.1 The flotation energy consumption test system used in this study included flotation and energy consumption test equipment. An XFD 0.75 L laboratory-scale inflatable flotation machine was used for the flotation rate test.A torque sensor that has data acquisition, data conversion, and data processing functions was selected as the energy
More
Separation performance of flotation column with dilution water
2019.7.16 The flotation efficiency index increases initially and then decreases as the rate of dilution water increases, and the highest flotation efficiency index is obtained at a dilution water rate of 0.18 cm/s, this indicates that appropriate addition of dilution water in the pulp zone improves the separation performance of the flotation column.
More
Utilization of coal fly ash in China: a mini-review on
2020.4.28 China is the largest coal consumer around the world, and coal accounts for more than 60% of the country’s energy mix (Peng et al. 2018; Wang et al. 2019).Coal fly ash (CFA), a solid waste produced by coal-fired thermal power plants during the combustion of pulverized coal, is currently one of the largest solid wastes in China (Yao et al. 2015).In
More
Flotation Process - an overview ScienceDirect Topics
The shape of a mechanical flotation tank is essentially rectangular, U-shaped, conical or cylindrical, according to the cell type and size. ... All coal flotation systems require the addition of a frother to generate small bubbles and to create a stable froth (Table 6.2). Typical addition rates for frothers are in the order of 0.05–0.3 ...
More
A review on flotation of coal using mixed reagent systems
2021.11.1 Such works reported on coal flotation are summarized in Table 5. These special compositions have tremendous advantages over the sum of single collectors utilized in coal flotation, and they even act as frother sometimes (DRZYMALA et al., 2005, Gao et al., 2015, Mcfadzean et al., 2012, Temel and Majumder, 2016, Wang et al., 2018, Xia et
More
Preparation and impact on coal flotation of octanol emulsion
2017.7.27 In this study, the method for the preparation of octanol emulsion using high shear emulsification with sorbitan oleate and sodium oleate complex as an emulsifier was studied. The effects of different factors on stability of emulsion were studied as well. Emulsion was used in the slime flotation. Based on single-factor experiment, composed
More
Improving Coal Flotation by Introducing a Modifier
2023.12.28 With this Sinterol consumption, the concentrate yield when using equal quantities of MTA and KOBS reagents is increased from 65.4 to 69.9%. In addition, the extraction of the combustible mass in the concen-trate is increased from 89.30 to 96.37%, while the ash content of the concentrate is reduced from 12.70 to 11.90%.
More
The distribution law of coarse particles in coal flotation and
2023.1.3 In the process of coal preparation, large particles are often misplaced into the flotation feedings due to poor classification, and thus bring about negative effects on flotation results. In this paper, batch flotation tests of 0.5–2.5 mm were carried out at different reagent dosage to quantitatively analyze the effect of particle size and ...
More
安茂燕 - 百度学术
Enhancing low-rank coal flotation using mixed collector of dodecane and oleic acid: Effect of droplet dispersion and its interaction with coal particle. 2020 - Yinfei Liao ， Xiaodong Hao ， Maoyan An ，... - 《Fuel》 - 被引量: 0.
More
The Process of the Intensification of Coal Fly Ash Flotation
2018.12.17 Pulp preconditioning using a stirred tank as a pretreatment process is vital to the flotation system, which can be used to improve the flotation efficiency of mineral particles. The kinetic energy that is dissipated in the stirred tank could strengthen the interaction process between mineral particles and flotation reagents to improve the
More
Support vector regression modeling of coal flotation based
2018.1.1 A total of sixty-four flotation experiments were performed by coal samples (Table 1) that provided from Ab-nil mine in Kerman, Iran.Batch flotation tests were conducted in a mechanical Denver laboratory cell (L: 0.13, H: 0.12 m, 1.5 L).The impeller’s rotational rate for the pulp agitation was varied: 900, 1000, 1100, and 1200 rpm (impeller
More
Multiscale Convolutional Network for Repairing Coal Slime
2023.3.1 Foam images of flotation tanks No. 1 and No. 2 at a coal washing company in the Inner Mongolia Autonomous Region were captured over the course of eight days. The daily duration of filming was 11 h. At the same time, every 20 min, the slime foam from two flotation tanks was collected. After the samples were dried, they were loaded to prepare
More
Coal Flotation SpringerLink
Abstract. Coal flotation of fine material has both economical and environmental benefits by recovering as much coal as possible from run-of-mine coal and by reducing air and water pollution due to the elimination of sulfur from clean coal and reduction in the solid amount which goes into the stream or in recirculating plant water.
MoreNew insight into the role of the emulsified diesel droplet size
2023.4.15 Furthermore, the hydrophobic groups of the benzene ring in 4-dodecyl phenol (4-DDP) could adsorb onto the coal surfaces through π-π bonds, enhancing the surface hydrophobicity of long-flame coal. Moreover, the flotation performance of long-flame coal was significantly improved using the emulsified mixture of kerosene and 4-DDP,
More
Introduction SpringerLink
2021.3.14 The feed box is a pulp preparation device, which makes coal slurry enter the flotation tank smoothly. The agitator mainly consists of an impeller, a stator, a stator cover plate and a transmission device. A false bottom and a suction pipe that can help pulp circulation are designed at the bottom of the tank body, and an adjusting ring is ...
More