Discussion on the determination method of high content calcium fluoride fluorite
In order to solve the problem of low results and poor repro-ducibility in the measurement of high content fluorite calcium fluo-ride(>98%)using boronic acid hydrochloric acid fusion and EDTA titration methods,the experimental steps were analyzed and adjust-ed.National standard samples and samples from a mining area in In-ner Mongolia were used as experimental objects,and the first water bath time,boiling time after adding hydrochloric acid and boric ac-id,and second water bath time that significantly affected the experi-mental results were adjusted,Obtained qualified test results.The re-sults indicate that the optimal conditions are:the first water bath time is adjusted to 10 minutes,the boiling time after adding hydro-chloric acid and boric acid is 2 minutes,the second water bath time is 30 minutes,and other conditions remain unchanged.
high content fluoritecalcium fluoride contentoptimal time
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NSTL
万方数据
