Method for preparing industrial calcium chloride
A technology for the production of industrial calcium chloride, applied in chemical instruments and methods, calcium/strontium/barium chloride, inorganic chemistry, etc., can solve the problems of reducing the economic value of aquatic products, polluting the environment, etc., to avoid ecological environment pollution, Less secondary pollution, high value effect
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[0017] Example 1
[0018] The first step: Shell pretreatment: Use clean water to remove soil and other debris on the surface of the shell, crush it, and store the powdered shell powder separately for use. It is inconvenient to stir during the reaction process, and the particle size is too small and will be pushed out by bubbles during the reaction process.
[0019] The second step: reaction stage: take 1.06 parts of crushing (containing 1 part of calcium carbonate) and add it to the reaction kettle, under stirring conditions, slowly add concentrated hydrochloric acid (mass concentration 36%) to the reaction that has been equipped with crushed shell particles In the tank, control the speed of acid addition at 1-1.5L / h, so as to avoid the phenomenon of "spilling the pot" in the reaction tank when the acid addition speed is too fast. If the phenomenon of "potting" occurs, it can be solved by high-pressure steam blowing or rinsing. It should be noted that in addition to washing ...
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