沥青的熔化加热一般是火焰直烧锅底,由于局部过热结焦,另外要粘上一些泥砂。这些焦炭及泥砂沉于锅底即影响导热,又缩短了锅的寿命,即使火很旺,沥青也很难升温,久而久之,泥砂越积越厚,甚至将锅底烧化也无济于事,沉积的泥砂焦炭非常坚硬,不易清除。为避免这种现象建议将锅内焊一(锅大可焊两个)火管。(见附图)热量通过火管传给沥青,加大了受热面,又少受泥砂影响。如果长期使用,还可在炉灶的结构上想些办法,使烟气出火管后经锅两侧 Asphalt melting and heating is usually the bottom of the flame straight burning pot, due to local overheating coking, in addition to stick some of the sand. These coke and sediment sink in the bottom of the pot that affect the heat, but also shorten the life of the pot, even if the fire is very busy, bitumen is also difficult to heat up, as time passes, the thicker the mud thicker, and even burn the bottom of the pot is not helpful, sediment coke Very hard, not easy to remove. In order to avoid this phenomenon, it is advisable to weld one pot (two large pots can be welded). (See photo) Heat is transmitted to the bitumen through the fire tube, which increases the heating surface and is less affected by the sand. If long-term use, but also think of some ways in the structure of the stove, the flue gas fire after the pot by both sides