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The effect of particle size on the rate and depth of moisture evaporation from coal stockpiles
(SAIMM, 2016)
Excessive amounts of moisture in product coal can influence the efficiency
of downstream utilization processes due to a decreased calorific value and
handling problems. Stockpiles can be used to decrease the moisture
content ...
Moisture retention and migration in a coal product stockpile
(IMPC, 2014)
Most coal supply contracts include strict limitations on the moisture content of the products. This limitation exists because of calorific, transport cost, and handling reasons. Managing the retention time on product ...
Drying of fine coal using air in a fluidized bed
(IMPC, 2014)
Fluidised bed drying is currently receiving much attention as a dewatering option during the beneficiation of fine (defined here as between 1 mm and 2 mm particles) coal. Apart from concerns about safety and combustion, ...
Fine coal dewatering using high airflow
(Taylor & Francis, 2014)
Fluidized bed drying is currently receiving much attention as a dewatering option after the beneficiation of fine coal. Apart from concerns about safety and combustion, the operating costs can be high if very high gas or ...
Water-only laboratory coal fractionation using the reflux classifier
(Elsevier, 2015)
Due to health and environmental factors involved with standard float-sink analytical methods, a water-only fractionation procedure was investigated. A laboratory scale 105 × 105 mm reflux classifier was built and used to ...
Air drying of fine coal in a fluidized bed
(SAIMM, 2015)
The demand for energy has continued to rise worldwide in line with
population growth. The majority of South Africa’s electricity is supplied by
coal-fired power stations. The amount of fine coal (-2 mm) generated at
coal ...
Beneficiation of small South African coal using an air dense medium fluidized bed
(Taylor & Francis, 2020)
This paper investigates the air dense medium fluidized bed (ADMFB) as a suitable dry beneficiation technique to upgrade +5.6 mm-13.2 mm South African coal. The separation efficiency of the ADMFB was assessed by determining ...
Contact sorption: a method to reduce the moisture content of coal fines
(Taylor & Francis, 2020)
This paper introduces contact sorption with ceramic sorbents as a method to reduce the moisture content of coal fines produced by coal processing plants. The proposed method was tested on laboratory scale where ceramic ...
Validation of using a modified BET model to predict the moisture adsorption behavior of bituminous coal
(Taylor & Francis, 2016)
A good correlation exists between the amount of moisture adsorbed and the oxygen content of medium-rank B vitrinite-rich and medium-rank C inertinite-rich bituminous coal. Total mass moisture adsorbed per gram of coal ...
Moisture transport during contact sorption drying of coal fines
(Taylor & Francis, 2020)
Studies have shown that contact sorption drying is a feasible technique to dewater fine (+0.15mm–0.5mm) and ultra-fine (−0.15 mm) coal. The aim of this article is to further investigate the drying mechanism involved. It ...