Results 171 to 180 of about 801 (207)
Some of the next articles are maybe not open access.
The Measurement and Analysis on the Coal Slime Yield Stress
Advanced Materials Research, 2012Pipeline transportation is an important process of mass industrial use of coal slime. The coal slime is transported in the form of dense pastes under high pressure pipeline. The coal slime yield stress is an important factor to design the pipeline transportation system, but the study on paste yield stress is less seen in published at present.
Jie Gao +4 more
openaire +1 more source
Combustion of Wet Coal Processing Waste and Coal Slime as Components of Fuel Slurries
Combustion Science and Technology, 2019Coal processing waste is generated annually in large volumes by the coal exporting countries. More than 70% of run-of-mine coal is enriched.
Ksenia Vershinina +2 more
openaire +1 more source
SUPER CLEAN COAL PRODUCTION WITH ORGANIC REAGENTS FROM SLIME COAL
2022In this study, it was aimed to produce super clean coal from Zonguldak slime coal with 29.67% ash with a completely organic process. For this purpose, slime coal was first enriched by flotation, and then super clean coal was produced by leaching with organic acids. Only organic consumables were used in laboratory-scale studies. In this way, super clean
Akın A., Hacıfazlıoğlu H.
openaire +1 more source
Raising Effectiveness of Polymeric Flocculants for Coal Slime Aggregation
Journal of Mining Science, 2000Experimental data on flocculant dissolution kinetics are presented. It is established that in order to obtain homogeneous solutions of various water-soluble polymers, it is necessary to create an optimum condition for each reagent. A technology and an equipment that allow full homogenization and precise batching of high-molecular reagents are developed
G.L. Yevmenova, A.A. Baichenko
openaire +1 more source
IMPROVEMENT OF THE EFFICIENCY OF FINE COAL SLIMES FLOTATION
2016The problems of selective flotation of fine slimes have been analyzed. Different technical solutions aimed at the improvement of the efficiency of flotation of coal containing fine slimes have been considered. As a criterion of the efficiency of separation results in flotation the index of maximum flotation ability has been suggested, which is ...
Y. B. Rubinstein +2 more
openaire +1 more source
Effect of flotation promoter on the rate of coal slime flotation
Journal of Mining Science, 2014The 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, and first-level
W. Xie, G. Cao, X. Ren, Y. Li
openaire +1 more source
Density Measurement of Coal Slime Powder by Pycnometric Method
Advanced Materials Research, 2013Coal slime is solid waste with high solid content, viscosity, fine particles, which is generated in the production process of the coal industry. The density of its powder is an important factor to affect the resistance characteristics of pipeline transportation.
Na Li +4 more
openaire +1 more source
Benefication of coking-coal slimes by means of screen centrifuges
Coke and Chemistry, 2009A new slime-benefication technology has been developed at Coal Preparation Plant Neryungrinskaya. In this technology, the product is separated in screen centrifuges. As a result, small particles with relatively high ash content are extracted in the centrifugate. Correspondingly, the cake has the required ash content of ≤10%.
S. A. Osadchii +2 more
openaire +1 more source
Slime heavy medium cyclone advantages in coal production
Filtration + Separation, 2016Slime heavy medium cyclone is used for coarse slime separation in many new coal preparation plants. This article demonstrates how it reduces ash content in clean coal, coarse slime entering the float processing, production costs and increases economic efficiency.
openaire +1 more source
Test of Coal Slime Pumping by Single-Screw Pump
Advanced Materials Research, 2013Previous research on thick pastes such as coal slime was using two-cylinder piston pump as power equipment.Since the pressure fluctuation was big,flow measurement was not that accurate. In order to solve the problem, this paper will presents a feasibility study on conveying coal slime by single-screw pump. We used a single-screw pump as power equipment
Hua Xu Yang +4 more
openaire +1 more source