Not anthracite, and not a stove, but my idea of banking came from my experience firing a steam locomotive (tourist railroad in SE PA). At the end of the day's runs, which required about 5 tons of soft coal in all, "banking" involved piling ~400 lbs just inside the firebox door. The rest of the fire would burn out overnight, dropping steam pressure by about 50% , but the fresh coal in the bank would burn and, as it did, would congeal to form one huge cherry red, or orange, ember. Next morning, you shake the grates, dropping the ash into the ashpan, leaving the grates bare, and rolling the ember around a little but not breaking it up. Then shovel new coal to cover the grates. Then, you use a ~9 foot "rake" to bust up the mama ember from the bank and disperse the embers throughout the firebox, add more coal, and turn on the "blower" to suck air up through the grates to feed the fire.
The tendency of the soft coal to melt into itself in a bank and form a single, solid ember allowed for complete removal of the ashes with no loss of fire. That feature, plus my affection for the smell of soft coal burning, are probably the only things about soft coal I like better than hard coal.