Production Method Of Silver Iodide

Double decomposition method: add potassium Iodide solution with relative density of 1.1 into the reactor, and slowly add silver Nitrate solution with relative density of 1.1 to 1.2 while stirring vigorously until the potassium iodide solution is excessive by about 3%. At this time, a yellow Silver Iodide precipitate is formed, which is left standing, filtered, washed with distilled water, centrifuged, and dried at below 70° C. to obtain a finished silver iodide product. The operations above KI+AgNO3→AgI↓+KNO3 should be carried out in a dark room or under red light. The filtered mother liquor is recovered, and potassium nitrate is produced as a by-product.

(1) Silver iodide generator. Burn the silver iodide acetone solution (with co-solvents such as sodium iodide, potassium iodide or iodide) in the silver iodide generator, so that the silver iodide vapor is cooled and crystallized into particles in the air.

(2) Silver iodide pyrotechnic agent. The silver iodide is mixed with the burning agent to make silver iodide flame bombs, fireworks, etc., and a large number of silver iodide particles are formed quickly after burning in the air.

(3) Silver iodide shells. Silver iodide, along with explosives, forms particles when the warhead explodes.

(4) Silver iodide hydrosol. Formulated with sodium iodide and silver nitrate to form droplets by spraying.

The icing rate of silver iodide particles produced by different methods is very different. The icing rate of silver iodide generator and pyrotechnic agent is higher, while the output rate of pyrotechnic agent and cannonball method is higher in unit time. The means of sowing are generally aircraft or anti-aircraft guns, but silver iodide generators and pyrotechnic tubes can also be used on the ground and enter the cloud by airflow and diffusion. Different catalytic means and generation methods can be selected according to the operation objects and requirements to ensure that a certain number of artificial ice crystals are generated in the required parts of the cloud.

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