The application of refractories in the fluidized roasting furnace of alumina.发布日期： 2019-04-25 点击次数：13116 |
|
|
Circulating fluidized roaster of alumina refractory materials used for the whole device for a total of 762 t, there are mainly castable, refractory brick, calcium silicate board, aluminum silicate fiber and refractory cement five categories, as well as the anchoring of fixed refractories. 1. Refractory material for the working layer. Refractory castable, a total of 351 t for level 1 venturi, cooled cyclone tube, fluidized bed cooler, all piping, flue and fluidized roasting furnace bottom and cyclone tube cone part, much as double layer or three layer. Refractory bricks are used in 269t, mainly used in boiling roasting furnaces, circulating cyclones, secondary cyclone separator, secondary venturi drier and flue. According to the technological characteristics and different process parameters and working conditions of fluidized roaster, the types and layers of refractory materials used in the working layer are different. According to temperature, material properties, light and heavy pouring process piping on all configuration, main equipment lining thermal insulation, heat insulation and refractory brick layer configuration, make refractory material and energy saving effect is better. 2. Insulating refractory material. The heat-insulating refractory has light casting material, light insulation brick, calcium silicate plate and refractory fiber. castable
Insulating brick The insulation bricks share 41. 76t is mainly used in fluidized bed coolers, primary venturi drier and secondary cyclone separator. Calcium silicate board Calcium silicate board shares 97. 5m3, with 50mm thick and 30mm thick, are mainly used in fluidized roasting furnace, circulating cyclone cylinder, cooling cyclone cylinder and primary venturi drier. Refractory fiber Refractory fiber shares 2. 5t is divided into fire-resistant fiberboard type, refractory fiber blanket and refractory fiber blanket. It is mainly used in expansion joints, expansion joints, supports and holes and various process holes. The anchoring piece Anchoring is the main part of lining, which is used to make lining and furnace wall firmly. Anchoring pieces and the distribution of furnace temperature, the properties of the refractory, lining thickness, the use of parts and chooses the anchoring piece shape and material, there are 15 kinds, 40 kinds of specifications, the weight is about 3000 kg of anchorage system of furnace lining stress distribution and the balance of heat bilges cold shrink thermal stress, prolonging lining life, play a vital role. |
