Heavy and thick alkali crystal device is a centrifuge to separate plasma heavy alkali crystal slurry one of the indispensable key equipment, there is no good thick device performance, the centrifuge capacity is not full, not even a continuous and stable operation, or overflow liquid crystal with too much, reduce economic efficiency.

 Heavy alkali small crystalline particles, special shape, broad particle size distribution; and heavy alkali centrifuge technology requires thick crystal slurry concentration the higher the better crystal slurry; leave thick device is not allowed to overflow with liquid more fine-grained suspended. These conditions to the thick device designed to cause difficulties. To meet the above requirements, the technology has taken some special measures.

 Heavy alkali crystal slurry from the bottom out of carbonation tower, resolved to go through decompression tanks, the pressure reduced to atmospheric pressure, resolve a supersaturated CO:, and then into the center of the thick cylinder. If necessary, into the thick device can also be added before the surfactant so that fine-grained flocculation, and then into the thick device.

 Center tube under the mouth area below the device for the thick thickening zone, is the main area of ​​thick device. The functions are: ① the pulp suspension evenly spread over the entire cross-section thickening zone; ② most of the grain slurry thickening settlement crystalline and stable, so that the bottom as the solid-liquid ratio of 70%; ③ of the crystal slurry have enough storage capacity, up and down the process as a buffer to ensure continuous and stable operation can centrifuge.

 Cone has a nesting area under the Ministry to ensure that the bottom of the discharge flow. When a gate solid-liquid ratio is too high, not very smooth discharge tube, you can use the bottom of the tube through a small amount of liquor imported liquor, in order to ensure the nesting area was smooth.

 Center of a cellular filler tube outside the area to retain a small increase in the crystallization mother liquor by entrainment, so that the overflow liquor entrained fine grain to a minimum. Therefore, under the port over from the center tube to fill the area above the cellular device to clarify the area for the consistency.

 Clarify the area above the clear liquid zone. Clear liquid layer must have a certain height, so that the liquid filler area to maintain a certain pressure head, to reduce the risk of cellular control of fluid pressure drop caused by the uneven distribution of the different nature of the honeycomb filler play a high efficiency.

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