Method for preparing granulated inorganic adsorbent for radionuclides

摘要

Disclosed is a method for preparing a granulated inorganic adsorbent for radionuclides including slurry forming, solidification, drying and hardening, granulation, and washing steps: blending a dihydrogen phosphate, a powdered inorganic adsorbent raw material and a setting time regulator in water to form a slurry; adding sintered magnesia into the slurry, and blending the mixture to form a solidified slurry; setting the solidified slurry on a disk member, and naturally drying to hardening in a specific temperature range to form a hardened solid material; smashing the hardened solid material and performing vibration sieving by using a screen to obtain a granulated inorganic adsorbent for radionuclides containing residual reagents; washing the granulated inorganic adsorbent for radionuclides containing residual reagents with water, to remove the residual reagents to complete preparation, where the adsorption capacity of the granulated inorganic adsorbent for radionuclides thus prepared is in the range of 0.7 to 1.9 meq/g.

主权项

1. A method for preparing a granulated inorganic adsorbent for radionuclides, comprising the following steps:
a slurry forming step: blending a dihydrogen phosphate, a powdered inorganic adsorbent raw material and a setting time regulator in water to form a slurry; a fixing step: adding sintered magnesia into the slurry, and blending the mixture to form a fixed slurry; a drying and hardening step: setting the fixed slurry on a disk member, and naturally drying to hardening in a specific temperature range to form a hardened solid material; a granulation step: smashing the hardened solid material and performing vibration sieving by using a screen, to obtain a granulated inorganic adsorbent for radionuclides containing residual reagents; and a washing step: washing the granulated inorganic adsorbent for radionuclides containing residual reagents with water, to remove the residual reagents, so as to obtain a granulated inorganic adsorbent for radionuclides.