通过单矿物沉降试验，研究了碳酸钠、氢氧化钠和硅酸钠对微细粒赤铁矿分散行为的影响。
The influence of sodium carbonate, sodium hydroxide and sodium silicate on dispersion of hematite fines were studied.
在一定范围内增强搅拌强度有利于微细粒赤铁矿的分散，但搅拌强度超过某一临界值后分散效果变差。
The hematite can be better dispersed with the increase of stirring speed in a range, but the dispersion becomes worse when the stirring speed exceed a critical value.
国产铁精矿是细粒度的磁选精矿，进口铁矿则以粉状赤铁矿为主。
The domestic ores are fine magnetite concentrate, and the imported ores mainly are hematite sinter fines.
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