CPC G21F 1/042 (2013.01) [C04B 14/10 (2013.01); C04B 14/34 (2013.01); C04B 18/0436 (2013.01); C04B 22/062 (2013.01); C04B 28/26 (2013.01); B28B 3/02 (2013.01); C04B 2111/00862 (2013.01)] | 4 Claims |
1. A process for making an advanced lead-free radiation protection material utilizing modified brine sludge composition, the process comprising:
a. drying of 200 g-800 g of brine sludge in an air oven at 100° C.-110° C. for a period of 1-2 hours to produce a heat-treated brine sludge, followed by simultaneous solid state reaction processing and dry grinding with 20-90 g of tungsten powder and 10 g-60 g metakaolin for a period of 2-4 hours;
b. after step a, adding and grinding 2 g-8 g potassium hydroxide for a period of 1-2 hrs and further adding and grinding 1 g-4 g potassium silicate for a period of 1-2 hrs to obtain fine homogeneous radiation protection powder of modified brine sludge composition;
c. after step b, adding and thoroughly blending with 4 ml-16 ml of water and compacting in a steel mold by providing hydraulic pressure in the range of 100-300 kg/cm2 to obtain tiles; and
d. after step c, heating the tiles in a furnace in the temperature range of 900° C.-1100° C. for a period of 1-2 hours to obtain the advanced lead-free radiation protection material.
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