White coal is a form of fuel produced by drying chopped wood over a fire. It differs from charcoal which is carbonised wood. White coal was used in England to smelt lead ore from the mid-sixteenth to the late seventeenth centuries. It produces more heat than green wood but less than charcoal and thus prevents the lead evaporating. White coal could be use mixed with charcoal for other industrial uses than lead smelting.
White coal was produced in distinctive circular pits with a channel, known as Q-pits. They are frequently found in the woods of South Yorkshire.
The term is also used to refer to Hydroelectricity.
White coal is also made from Ground nut husk.
Benefits of White Coal over Non Cooking coal: – –
White coal is cheaper than heavy furnace oil ,coal & fire wood etc –
High sulphur content of oil and coal, when burnt pollutes the environment. –
There is no sulphur in the white coal, therefore no toxic gases –
Moisture contents nil because white coal is totally dry. –
Biomass briquettes have a higher practical thermal value and much lower ash content (2-10% as compared to 20-40% in coal). –
Briquettes have consistent quality, have high burning efficiency, and are ideally sized for complete combustion. –
Combustion is more uniform compared to coal and boiler response to changes in steam requirements is faster due to higher quantity of volatile matter in briquettes. –
There is no fly ash when burning briquettes. –
The Calorific Value of the Finished Briquettes is Approx 3800 to 4400 K.cal/Kg. The Calorific Value may varies depends on the different RM used such as Baggase, Saw Dust, Groundnut shell, Rice Husk, Cotton Stalk, Custard Shell, Wheat Straw –
We are using Ground Nut Shell as raw material for the production of white coal, which gives highest i.e. 4000 to 4200 K.cal/K.G calorific value in comparison.
^ Rackham, Oliver (2007). The New Naturalist Series. Woodlands. London : Collins. ISBN 978-0-00-720244-7. p. 205.
^ Muir, Richard (2008). Woods, Hedgerows and Leafy Lanes. Pub. Tempus, Stroud. ISBN 0-7524-4615-8. pp. 91 – 92.
^ The Book of Knowledge. Vol. 9 (1945 ed.). p. 3220.
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