Crucible furnace crucible is placed in the kiln, in the crucible of a batch of melted glass thermal equipment. Placed inside the kiln bore single or only a crucible. Each stage crucible melting glass (melted, clarified, homogenization, cooling) sequentially over time in the same crucible, molding, artificial from the crucible opening reclaimer to be bottom of the crucible for the material, or the entire crucible out of the reclaimer. Multi crucible furnace crucible furnace kiln compared with the pool, the structure is relatively simple, low cost, short construction period, can quickly put into production, but also conducive to the rapid transformation of the product. From the operating point of view, its melting system is easy to adjust, and can use mechanical agitation, holding time, the production of good uniformity and high quality glass. Crucible furnace also has some of their own shortcomings, small volume, low thermal efficiency, low utilization of glass, when changing the crucible labor intensity is relatively large, the preparation of the crucible itself is also more complicated. It is suitable for the production of a small number of varieties, higher product quality or has some special properties of glass; but also for scientific research or trial of new products. Because the material is not high degree of mechanization and processing, so the higher energy crucible furnace melting glass melting and fining temperature refractory restricted and can not be too high.