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The PCI method is based on the simple concept of primary air (termed the "conveying gas") carrying pulverized coal which injected through a lance to the tuyere (mid-bottom inlet of a blast furnace), then mixed with secondary hot air (termed the "blast") supplied through a blowpipe in the tuyere and then piped to a furnace to create a balloon ...
Metallurgical coal or coking coal [1] is a grade of coal that can be used to produce good-quality coke. Coke is an essential fuel and reactant in the blast furnace process for primary steelmaking. [2] [3] [4] The demand for metallurgical coal is highly coupled to the demand for steel. Primary steelmaking companies often have a division that ...
The Middlemount Coal Mine is an open-cut mine located approximately 90 kilometres north-east of Emerald and some 7 kilometres west of the township of Middlemount in Queensland's Bowen Basin. The mine produces medium-volatile pulverized coal injection (PCI) coal and semi-hard coking coal for the export market. Full scale operations at the open ...
A coking factory or a coking plant is where coke and manufactured gas are synthesized from coal using a dry distillation process. The volatile components of the pyrolyzed coal, released by heating to a temperature of between 900°C and 1,400 °C, are generally drawn off and recovered. There are also coking plants where the released components ...
Coal logs do not require as much drying because they are tightly packed so they do not absorb much water, and any water originally in the coal is squeezed out during compression. To dry the coal, the water is evaporated or separated in a centrifuge. Large coal power plants use large amounts of coal each day; enough to fill a hundred train coal ...
The water, which was being siphoned off the top of an old coal ash pond for re-use at the Boswell Energy Center in Cohasset, Minn., escaped from a break in an underground bend in the pipe ...
Coking is the process of heating coal in the absence of oxygen to a temperature above 600 °C (1,112 °F) to drive off the volatile components of the raw coal, leaving behind a hard, strong, porous material with a high carbon content called coke. Coke is predominantly carbon.
The mine plans to increase its annual saleable PCI and coking coal production to three million tonnes (3.3 million tons) as port constraints are eased at Dalrymple Bay Coal Terminal. Millennium provides a low-ash coking coal and low-to-mid-volatile PCI coal to customers in Japan, Korea and India.