从铁尾矿中回收钛的试验研究
发布时间：2018-11-25 07:36
【摘要】：随着钛工业的发展,品位较高的天然金红石资源日趋枯竭,这就迫使人们开发利用储量丰富的钛铁矿资源,对其进行经济合理的利用已成为一项重要课题。采用某铁尾矿为试验矿样。首先通过对矿样进行工艺矿物学研究,然后经过了两段磨矿、两段磁选对铁尾矿中的钛铁矿进行富集,最后通过浮选得到了合格的钛精矿产品。结果表明:由于铁尾矿中钛的品位较低,只有通过阶段磨矿—磁选、浮选的联合流程才能得到合格产品。一段磨矿的细度为-0.074mm占60%,第二段磨矿细度为-0.074mm占85%,经过两次磁选,获得品位合适的入浮原料,经过一次粗选、一次扫选、三次精选、中矿循序返回的闭路流程,用硫酸调节p H值,氟硅酸钠作为抑制剂,MOH-2和柴油作为捕收剂,可以获得产率为5.53%,钛品位为47.15%,回收率为53.43%的合格钛精矿。通过吸附量测定和红外光谱分析,研究了捕收剂MOH-2和矿物的作用规律。结果表明:钛铁矿与捕收剂作用前后的红外光谱明显不同,出现了新的吸收峰,由此可以确定,捕收剂MOH-2在钛铁矿表面发生了化学吸附。
[Abstract]:With the development of titanium industry, the natural rutile resources with high grade have been exhausted day by day, which has forced people to develop and utilize the abundant ilmenite resources, and it has become an important subject to utilize them economically and reasonably. A certain iron tailings are used as test samples. The process mineralogy of the ore sample was studied at first, and then the ilmenite in the iron tailings was enriched by two-stage magnetic separation, and the qualified titanium concentrate product was obtained by floatation. The results show that due to the low grade of titanium in iron tailings, qualified products can be obtained only through the combined process of stage grinding and magnetic separation. The fineness of the first stage of grinding is-0.074mm, the second stage of grinding is-0.074mm, the fineness of the second stage is-0.074mm, after two magnetic separations, the appropriate grade of floating raw materials is obtained, after one rough, one sweep, three times of cleaning, In the closed circuit process of sequential return of ore, pH value is adjusted by sulfuric acid, sodium fluorosilicate is used as inhibitor, MOH-2 and diesel oil are used as collector, the yield is 5.53 and titanium grade is 47.15. The recovery rate is 53.43%. The action of collector MOH-2 and minerals was studied by means of adsorption and infrared spectrum analysis. The results show that the infrared spectra of ilmenite and collector are obviously different before and after the interaction, and a new absorption peak appears. It can be concluded that the collector MOH-2 is chemically adsorbed on the surface of ilmenite.
【学位授予单位】：华北理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD926.4
[Abstract]:With the development of titanium industry, the natural rutile resources with high grade have been exhausted day by day, which has forced people to develop and utilize the abundant ilmenite resources, and it has become an important subject to utilize them economically and reasonably. A certain iron tailings are used as test samples. The process mineralogy of the ore sample was studied at first, and then the ilmenite in the iron tailings was enriched by two-stage magnetic separation, and the qualified titanium concentrate product was obtained by floatation. The results show that due to the low grade of titanium in iron tailings, qualified products can be obtained only through the combined process of stage grinding and magnetic separation. The fineness of the first stage of grinding is-0.074mm, the second stage of grinding is-0.074mm, the fineness of the second stage is-0.074mm, after two magnetic separations, the appropriate grade of floating raw materials is obtained, after one rough, one sweep, three times of cleaning, In the closed circuit process of sequential return of ore, pH value is adjusted by sulfuric acid, sodium fluorosilicate is used as inhibitor, MOH-2 and diesel oil are used as collector, the yield is 5.53 and titanium grade is 47.15. The recovery rate is 53.43%. The action of collector MOH-2 and minerals was studied by means of adsorption and infrared spectrum analysis. The results show that the infrared spectra of ilmenite and collector are obviously different before and after the interaction, and a new absorption peak appears. It can be concluded that the collector MOH-2 is chemically adsorbed on the surface of ilmenite.
【学位授予单位】：华北理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD926.4
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