soft coal


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Synonyms for soft coal

rich in tarry hydrocarbons

References in periodicals archive ?
If the barrier layer is assumed to be dense and hard rock, then the amount of gas in the soft coal that leaks through the barrier into the tunnel is approximately zero.
The model is characterized by nine parameters, presented in the Tables 1 and 2 for hard and soft coal seams respectively.
He published Soft Coal, Hard Choices: The Economic Welfare of Bituminous Coal Miners, 1890-1930 with Oxford University Press in 1992.
soft coal) mining operations were able to adopt various kinds of mechanization to circumvent such restrictions and boost productivity, but the distinctive geology of hard coal made it impossible for anthracite mine companies to use the same tactics.
"The challenge with this deposit is that it contains trace amounts of lignite." Martin said that lignite, a material similar to soft coal, causes problems with concrete sand because it is lighter than the sand and essentially pops out as the concrete sets, causing voids in the finished concrete.
Stable cement prices along with soft coal prices reiterate our call for firm cement margins in the near term.
Farmers received 18 cents a bushel for corn and paid $10 per ton for soft coal.
It also uses large and increasing amounts of lignite, a particularly dirty soft coal, to generate power, despite climate emissions targets.
Among the contributing factors for the soft coal market, Dean says, are the comparatively low price of natural gas and the number of power plants being converted from coal to natural gas.
Applicable coal: Category 1, Category 2 and Category 3 common mixing bubble soft coal. Mixing rate of gangue powder is required by less than 50%.
know about Orange bears with their coats all stunk up with soft coal And
Among specific topics are recovering valuable metals from copper slag by hydrometallurgy, fluid flow in a large round bloom continuous casting mold, the kinetics of pressure acid leaching of zinc from zinc silicate ore, cost optimization of pig iron, a large-scale rotary steam tube drying system and equipment for copper powder, permeability characteristics of soft coal under higher confining pressure, virtual simulation of the ground scene of the mining area, and a technique to measure a metal tank's oil temperature and level.
They responded to shouts of "Clink, "Ann" and "Bi." Anthracite is hard coal; bituminous soft coal; clinkers are the meteor-like residue left in furnaces when coal burns down.
But I have this little niggling thought - could this major change in our weather patterns be linked in any way to our ceasing to burn soft coal in our houses and factories at about the same time?
The company plans to invest in locations such as Australia, Canada, central Asia, and Africa with the investments likely to focus on resources such as soft coal, uranium, iron and rare earths.