The results will help to extend the range of conventional dense-medium cyclining to sizes now typically cleaned in relatively inefficient water-only cyclone and spiral concentrators circuits. This technology also provides a potential approach to produce ultra-clean material as would be used for feedstocks for premium carbon products.
The U.S. Department of Energy's Office of Scientific and Technical Information
The upgrading and processing of coal slime can reduce its ash and water content, thus increasing its heat content and using it as raw material for high value-added coal chemical industry. The water-only cyclone (WOC) is a device that separates fine coal using autogenous medium, which is different from the dense medium cyclone (Chu et …
The effect of these variables on responses such as yield and ash was investigated. Results show that used coal with feed ash of 37.84% can be washed to reduce the ash up to 18.54%, and at this stage, washed coal yield was found at …
Semantic Scholar extracted view of "Application of the modified water-only cyclone for cleaning fine coals in a Turkish washery, and comparison of its performance results with those of spiral and flotation" by H. Hacıfazlıoğlu ... (TWOCs) as the main separating equipment was designed and evaluated for Lv-jiatuo coking-coal … Expand. …
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Hydrodynamic analysis. 1. Introduction. Froth flotation is commonly used to process coal fines below 0.5 mm. However, due to environmental hazards and the use of costly chemical reagents, it is imperative to identify an alternative technique to process coal fines. The water-only cyclone (WOC) is a centrifugal gravity concentrator that uses ...
ABSTRACT Experiments were carried out on a 100-mm laboratory water-only cyclone with dual-type cone to treat −3.0-mm Indian coal. Separation behavior of the individual size fractions (within −3 + 0 mm size) feed coal during separation was analyzed critically and their cut densities (SG50) were estimated. A minimum ash content of down …
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Separation tests on a high-sulfur-coal sample were carried out using a water-only cyclone (WOC) with a three-stage cone (also named a tri-cone water-only …
Hydrocyclones are ideal for recovering down to 400 mesh (38µm) particles of 2.7 SG. This is typically done in the form of an Ultra Fines Recovery system comprised of a Sump, …
Precisionscreen are leaders in the design and manufacture of mobile screening, washing, crushing and recycling equipment for the quarry, mining, extractive, materials handling and recycling industries. Precisionscreen equipment is found in more than 15 countries including the United States, Italy, the Philippines, Malaysia and Australia.
Special Research Report SR-45 The depletion of good quality raw coal and mechanized mining methods, producing more fines, has caused an increase in the percentage of mechanically cleaned coal. As a result the coal industry is faced with the problem of choosing the proper fine coal preparation equipment based on efficiency, economics, …
Traditionally, the water-only cyclone is being used in coal preparation to clean the coal of size less than 0.5 mm and there are some literature which narrates the application on water-only ...
Traditionally, the water-only cyclone is being used in coal preparation to clean the coal of size less than 0.5 mm and there are some literature which narrates the application on water-only ...
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The paper deals with the possibilities of water only cyclone application in steam coal preparation with the aim to decrease the ash content in coal and to increase the coal heating value. The steam coal of the three Slovak coal localities from the Upper Nitra Basin was subjected to separation in a hydrocyclone without using a heavy medium.
Performance of the 100 mm water-only cyclone and its design parameters in cleaning minus 3.0 mm Indian coal was successfully evaluated via Taguchi based Grey-Relational-Analysis (GRA) using L16 ...
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Derek Parnaby Cyclones acquired Anzec Sizers in 2005.The Asec Mini Sizer has been used across British Coal Mines as part of their coal washing equipment for underground crushing. The Ansec Twin Roll Sizers are used for crushing larger tonnages in excess of 1000 tonnes per hour. Hydrosizers are an effective piece of coal washing equipment …
Performance of the 100 mm water-only cyclone and its design parameters in cleaning minus 3.0 mm Indian coal was successfully evaluated via Taguchi based Grey-Relational-Analysis (GRA) using L16 ...
Separation tests on a high-sulfur-coal sample were carried out using a water-only cyclone (WOC) with a three-stage cone (also named a tri-cone water-only cyclone). The lower size limits of deashing and desulfurization were determined to be 0.098 mm and 0.045 mm, respectively.
Macro-management strategy, such as demand-side management, could help to control energy consumption at macro-level and improve energy efficiency effectively in mining processes (Xia and Zhang 2016 ...
When it comes to cleaning coarse and fine coal, heavy-media vessels can be inefficient and maintenance-intensive. As a better alternative, our Heavy-media Cyclone, designed specifically to clean coal and minerals, is extremely efficient, using finely ground (-325 mesh/44 microns) magnetite and water as the "media."
During this period, the "typical" dense medium cyclone circuit was designed to process raw coal in the 9.5 mm x 0.6 mm size range. Coarser coal was processed in dense medium vessels or jigs, and the fines were processed in spirals, water-only cyclones, or flotation. The past years have witnessed a significant extension in state-of …
The dense medium process, specifically using dense medium cyclones, is the dominant washing technology in use today. This paper briefly reviews current statistics for the world coal industry in ...
Performance of the 100 mm water-only cyclone and its design parameters in cleaning minus 3.0 mm Indian coal was successfully evaluated via Taguchi based Grey-Relational-Analysis (GRA) using L16 ...
For a number of years the cyclone, familiar to Americans as a dust collector, has been used as a thickener of suspensions at one of the coal-preparation plants of the Netherland State Mines in Limburg. The …
Performance data for different coal washing units such as jigs, tables, spiral concentrators and industrial water-only cyclones were also selected from the literature to check the validity of the ...
