Intermitted type heating stove and combustion method therefor

A batch type heating furnace is characterized by that a secondary air blowing is set above the coal feeding hole, a flame jetting is set between the combustion chamber and working chamber. The combustion type is open fire reverse combustion, i.e, the combustion of coal is from above to below, over the grate there are slag layer first, then coal layer, then kindling layer. The combustion proceeds successively as kindling stage, gas combustion stage, coke combustion stage and finally cindering stage to finish the combustion.