Results 21 to 30 of about 17,317 (245)

Optimization of Coal Washery Tailings by Flotation Process

open access: yesEnergies, 2019
Flotation tailings are by-products of coal preparation plants, which do not only occupy cultivated land but also cause pollution. The high ash content and low calorific value of tailings limit their applications.
Changliang Shi, Gan Cheng, Shengnan Wang
doaj   +1 more source

Flotation and Humic Acid Extraction Test of Zhaotong Lignite

open access: yesKuangchan zonghe liyong, 2023
This is an essay in the field of mineral processing engineering. Humic acid is an important part of Zhaotong lignite. In order to extract humic acid efficiently, the optimum flotation conditions of Zhaotong lignite were explored by using the process of ...
Peng Chen   +5 more
doaj   +1 more source

Coal surface control for advanced fine coal flotation [PDF]

open access: yes, 1991
The initial goal of the research project was to develop methods of coal surface control in advanced froth flotation to achieve 90% pyritic sulfur rejection, while operating at Btu recoveries above 90% based on run-of-mine quality coal. Moreover, the technology is to concomitantly reduce the ash content significantly (to six percent or less) to provide ...
Fuerstenau, D. W.   +17 more
openaire   +5 more sources

Environmental Impact of Silicic Magmatism in Large Igneous Province Events

open access: yesGeophysical Monograph Series, Page 133-151., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Scott E. Bryan
wiley  

+1 more source

A new mathematical model for coal flotation kinetics

open access: yesDyna, 2017
This study describes the development and formulation of a novel mathematical model for coal flotation kinetic. The flotation rate was considered as a function of chemical, operating and petrographic parameters for a global flotation order n. The equation
Juan Sebastián Guerrero-Pérez   +1 more
doaj   +1 more source

Fluid dynamics based modelling of the Falcon concentrator for ultrafine particle beneficiation [PDF]

open access: yes, 2009
Enhanced gravity separators are widely used in minerals beneficiation, as their superior gravity field enables them to separate particles within narrow classes of density and size.
Bourgeois, Florent   +2 more
core   +3 more sources

A new perspective on the interaction of refractory coal and polar collector: molecule docking and induced fit effect

open access: yesMeitan kexue jishu
Studying the interaction between coal slime and flotation agents will be the hot and difficult point of flotation process strengthening. In view of the strong hydrophilic chemical structure characteristics of the surface of difficult flotation coal, this
Pengcheng QU   +5 more
doaj   +1 more source

EFFECT OF FINELY-DISPERSED COAL SLUDGES ON THEIR FLOATABILITY [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2019
Subject of Research. We study the effect of physical and chemical properties of finely-dispersed coal sludges of “MMK-UGOL” on their floatability. Method.
Vasiliy N. Petukhov   +5 more
doaj   +1 more source

Performance Comparison of Waste Cooking Oil on Coal Slime Flotation with Sunflower Oil and Gas Oil

open access: yesHittite Journal of Science and Engineering, 2023
This study explores the potential use of waste cooking sunflower oil (WSO) as an eco-friendly collector for coal slime flotation. WSO and coal slime are both wastes and are hazardous to human health and the environment, if not disposed of properly.
Hasan Hacıfazlıoğlu   +1 more
doaj   +1 more source

Flotation in the Australian coal industry – recent developments [PDF]

open access: yesMATEC Web of Conferences
The Australian coal industry has historically utilised froth flotation circuits to optimise plant operations in the recovery of coal ultrafines. This was generally restricted to processing of metallurgical coal, with less emphasis placed on recovery of ...
Dimech L.   +4 more
doaj   +1 more source

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