A math problem,
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It is known that the coal fed into the furnace contains 78.01% carbon and 13.76% ash； The ash contains 13.78% carbon and 84.02% ash ； The blown-out material contains 82.20% carbon and 14.51% ash; the amount of carbon lost in the blown-out material accounts for 4.5% of the total carbon content of the coal fed into the furnace. If the amount of coal fed into the furnace per year is 40,000 tons, determine: (1) the amount of ash and slag discharged per year ； ⑵ The amount of carbon lost each year due to ash and effluents.
Ash = [40000*13.76% – 40000*4.5%*(1–82.2)] / (1–13.78%) = 6012 tons. Carbon lost in fine ash = (40000*4.5%*82.2%) = 1480 tons. Ash loss = 6012*13.78% = 828 tons