Assertion: cryolite | /r/HasAspect | low naf/alf weight ratio
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Source sentences:
text: Accordingly, the problem of providing a cryolite having a low NaF/AlF weight ratio, and which would be of great value as an additive to alumina reduction cells in maintaining the optimum ratio of NaF to AlF in the electrolyte, as well as for other purposes, remained unsolved prior to the present invention.