东鞍山含菱铁矿赤铁矿石分级浮选试验研究
发布时间：2018-12-10 14:01
【摘要】：东鞍山烧结厂矿石铁品位为32.45%,具有贫铁、高硅的特点,主要铁矿物为赤铁矿,主要脉石矿物为石英,同时含有少量的菱铁矿和磁铁矿,是一种含菱铁矿赤铁矿石。对磨矿细度为-0.074 mm占70%的产品筛分分析表明,随着粒度的增加,各粒级铁品位逐渐增大,铁矿物单体解离度逐渐减小。在该磨矿细度下进行分级浮选闭路试验,-0.074 mm粒级以柠檬酸为分散剂、氧化钙为活化剂、淀粉为抑制剂、KS-Ⅲ为捕收剂,+0.074 mm粒级以淀粉为抑制剂、十二胺为捕收剂,可获得精矿铁品位63.30%和铁回收率71.32%的浮选指标。与全粒级浮选相比,分级浮选可减弱微细粒矿物的黏附罩盖,提高浮选指标。
[Abstract]:The ore iron grade of Donganshan sintering plant is 32.45, which is characterized by poor iron and high silicon. The main iron ore is hematite, the main gangue mineral is quartz, and there are a few siderite and magnetite, so it is a kind of hematite containing siderite. The sieving analysis of products with grinding fineness of-0.074 mm showed that with the increase of grain size, the grade of iron increased gradually, and the dissociation degree of iron mineral monomer decreased gradually. The closed circuit test of fractionation flotation was carried out under the grinding fineness. The particle size of-0.074 mm was composed of citric acid as dispersant, calcium oxide as activator, starch as inhibitor, KS- 鈪，
本文编号：2370699
[Abstract]:The ore iron grade of Donganshan sintering plant is 32.45, which is characterized by poor iron and high silicon. The main iron ore is hematite, the main gangue mineral is quartz, and there are a few siderite and magnetite, so it is a kind of hematite containing siderite. The sieving analysis of products with grinding fineness of-0.074 mm showed that with the increase of grain size, the grade of iron increased gradually, and the dissociation degree of iron mineral monomer decreased gradually. The closed circuit test of fractionation flotation was carried out under the grinding fineness. The particle size of-0.074 mm was composed of citric acid as dispersant, calcium oxide as activator, starch as inhibitor, KS- 鈪，
本文编号：2370699
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