Refers to the sulfur content of sulfur in crude oil (sulphide or elemental sulfur) of the percentage.

含硫量是指原油中所含硫（硫化物或单质硫分）的百分数。

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By adding sodium sulphide to depress quartz in the cleaning, high grade fluorite concentrate can be gained, whose content of silicon is under 1.0%, grade is over 97% and recovery is higher than 87%.

同时采用精选补加硫化钠抑制石英，得到了含硅量低于1.0%，品位高于97%，总回收率高于87%的高品级萤石。

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