... in rubber, wood drying and anticorrosive processing, heavy metal smelting, refractory bricks invade with coal, oil seeping raise, chemical fiber glass evaporate ... x 21 metres kettle, can accommodate 20 thousand dollars standard bricks, 28.8 meters 3 gas block; 2 x 31 meters ... kettle, can accommodate 3 million pieces of standard bricks, 39 meters 3 gas block; 6, 21 meters kettle with ...