求翻译：适用于中小型选矿厂处理密度大、粒度粗的金属矿石，在各种浮选作业中均采用，尤其对铅、锌、钼、硫和硅砂的选别效果最好是什么意思？

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Suitable for small and medium-sized processing plants processing density, granular rough metallic ores in various flotation is used in both the job, especially for lead, zinc, molybdenum, sulfur and silica sand options best country

Is suitable in the middle and small scale ore dressing plant processing density big, the granularity thick metal ore, uses in each kind of flotation process work, especially to the lead, the zinc, the molybdenum, the sulfur and the silicone sand classification effect is best

For medium and small ore-dressing plant processing density, coarse granularity of metal ores are used in various flotation, especially for lead, zinc, molybdenum, sulfur and silica sand dressing works best

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