Cyclone preheater and roasting furnace connecting structure
A cyclone preheater and connection structure technology, which is applied in the field of connection structure, can solve the problems of the influence of roasting furnace production capacity, the difficulty of adding a central tube, and the reduction of the separation efficiency of the third-stage cyclone preheater.
Inactive Publication Date: 2014-08-13
SHENYANG BOYU TECH
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Problems solved by technology
In order to improve the separation efficiency of materials, there is a central tube in the first and second cyclone preheaters and the fourth cyclone cooler, but the third cyclone preheater is directly connected to the roasting furnace, and the temperature in the furnace reaches 1000 Above ℃, ordinary steel is difficult to apply in this working condition, so it is very difficult to add a central tube in the third-stage cyclone preheater, which will greatly reduce the separation efficiency of the third-stage cyclone preheater, and the whole The capacity of the roaster will also be affected
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[0012] The present invention will be further described below in conjunction with accompanying drawing.
[0013] Such as figure 1 As shown, the connection structure between the cyclone preheater and the roasting furnace of the present invention includes the cyclone preheater and the roasting furnace, the top plate 1 of the cyclone preheater is welded to the first connecting inclined plate 3, and the top plate 2 of the roasting furnace is connected to the second inclined connecting plate. The plate 4 is welded, the first connecting sloping plate 3 is connected with the second connecting sloping plate 4 and are on the same plane, one side of the second connecting sloping plate 4 is provided with a side plate 5, and the side plate 5 is β=15 to the vertical direction °~60°welding. The angle α between the first connecting sloping plate 3 and the horizontal plane is 15°-60°, and the angle α between the second connecting sloping plate 4 and the horizontal plane is 15°-60°.
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The invention relates to a connecting structure, in particular to a cyclone preheater and roasting furnace connecting structure for roasting aluminum hydroxide in the process of producing aluminum oxide. The cyclone preheater and roasting furnace connecting structure comprises a cyclone preheater and a roasting furnace, wherein a top plate of the cyclone preheater is welded with a first connecting inclined plate; a top plate of the roasting furnace is welded with a second connecting inclined plate; and the first connecting inclined plate and the second connecting inclined plate are connected with each other and positioned on the same plane. The connecting structure has the advantages that: a side plate is used for forcing airflow to flow along the volute-shaped cylinder walls of the cyclone preheater and the roasting furnace, and the first connecting inclined plate and the second connecting inclined plate are used for forcing the airflow to flow down along the volute-shaped cylinder walls of the cyclone preheater and the roasting furnace, so that the separation efficiency of material flow also can be improved even if a central tube is not arranged in the cyclone preheater.
Description
technical field [0001] The invention relates to a connection structure, in particular to a connection structure between a cyclone preheater and a roasting furnace used for aluminum hydroxide roasting in the alumina production process. Background technique [0002] There are several types of roasters used in alumina production for the roasting of aluminum hydroxide. The final process of producing alumina is to roast the aluminum hydroxide containing a certain amount of water after being filtered by a flat plate in a relatively high temperature roasting furnace, the purpose is to remove the attached water and crystal water in the aluminum hydroxide. At present, the gas suspension roaster is the most widely used in various alumina plants. The gas suspension roaster mainly consists of three-stage cyclone preheater (PO1~PO3), roaster (PO4) and four-stage cyclone cooler (CO1~CO4). In order to improve the separation efficiency of materials, there is a central tube in the first an...
Claims
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IPC IPC(8): C01F7/30
Inventor 白瑞升刘常林
Owner SHENYANG BOYU TECH