Then the pellets pass through the kiln tail into the rotary kiln after preheating at the chain grate
. In the rotary kiln, the oxidizing roast and consolidation process of pellets is completed, which makes pellets have the physical and chemical properties of the blast furnace burden.
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They have recently introduced cost and energy efficient Mulifuel Coal fired chain grate
(steam boilers and oil heaters) keeping in mind energy crises and rise in fuel prices.
Led by Professor Steve Wilcox, the University hopes to develop a chain grate
combustion process that can burn biomass fuels in boilers, in a similar system that is used for burning coal.
The middle years saw development of the Chain Grate
Stoker and thousands of old Lancashire type boilers were converted by Danks of Oldbury.
These were coal-fired and fitted with chain grates
, fed by a conveyor system from the outside of the building.
For example, if 1% of all coal burned on chain grates
in industrial and service sectors were replaced by Biomass fuel the UK would save 25,000 tonnes of carbon emissions annually.