上海市场供应的二次风煤饼炉改进后效果显著提高。该炉是利用发电厂煤灰中提取的一种二氧化硅玻璃珠作炉胆与园筒之间的填料,如图所示。这种材料不仅可以大量供应,价格便宜,而且保温效果好。原来的炉子一块煤饼可烧3小时,封炉15小时。采用新炉子后,一块煤饼可烧3个半小时,封炉18小时。 Shanghai billet supply breeze furnace improved significantly after the results. The furnace is the use of a power plant ash extracted silica glass beads as a filler between the furnace and the cylinder, as shown. This material can not only supply large quantities, cheap, and thermal insulation effect is good. The original stove a briquette can burn 3 hours, closed furnace 15 hours. After using a new stove, a piece of coal can be burned 3 and a half hours, closed 18 hours.