Bottom ash is part of the non-combustible residue of combustion in a furnace or incinerator. In an industrial context, it usually refers to coal combustion and comprises traces of combustibles embedded in forming clinkers and sticking to hot side walls of a coal-burning furnace during its operation. The portion of the ash that escapes up the chimney or stack is, however, referred to as fly ash. The clinkers fall by themselves into the water or sometimes by poking manually, and get cooled.
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Famous quotes containing the words bottom and/or ash:
“Unfortunately, we cannot rely solely on employers seeing that it is in their self-interest to change the workplace. Since the benefits of family-friendly policies are long-term, they may not be immediately visible or quantifiable; companies tend to look for success in the bottom line. On a deeper level, we are asking those in power to change the rules by which they themselves succeeded and with which they identify.”
—Anne C. Weisberg (20th century)
“And in the next instant, immediately behind them, Victor saw his former wife.
At once he lowered his gaze, automatically tapping his cigarette to dislodge the ash that had not yet had time to form. From somewhere low down his heart rose like a fist to deliver an uppercut, drew back, struck again, then went into a fast disorderly throb, contradicting the music and drowning it.”
—Vladimir Nabokov (1899–1977)