Thick crystal slurry heavy alkali centrifuge device is indispensable for heavy alkali crystal paste one of the key equipment, not thick device with good performance, the centrifuge capacity is not full, not even a continuous and stable operation, or overflow liquid crystal with too much, reduce the economic benefits.

 Re-crystallization of small particles, alkali, 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 with overflow liquid is not allowed more fine-grained suspended. These conditions to the thick device designed to cause difficulties. To meet the above requirements.

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

 Center tube under the mouth area below the thick device for the thickening zone, is the main area of ​​thick device. The functions are: ① the suspension slurry thickening more evenly distributed to the entire cross-section area; 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 there is sufficient storage capacity, up and down the process as a buffer, centrifuge to ensure continuous and stable in operation.

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