内蒙古某釉料级长石矿选矿试验研究

发布时间：2018-03-01 22:27

本文关键词： 长石石英除铁浮选　出处：《武汉理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：随着优质长石资源的减少以及市场对长石质量要求的提高,长石的选矿提纯显得尤为重要。内蒙古西乌珠穆沁旗长石资源丰富,但是烧成白度较低,石英含量较高,无法满足高等釉料级长石的要求。此长石矿中,长石主要与石英、含铁矿物等共生,选矿提纯是除去这些脉石矿物的唯一有效途径。在对原矿试样性质进行详细研究的基础上,进行了磨矿、脱泥、磁选、浮选除铁、浮选除石英等试验研究,具体结论如下:(1)矿石的主要化学成分为K2O 10.21%、Na2O 4.00%、SiO2 66.95%、Al2O318.23%,其次为烧失量0.28%、Fe2O3 0.12%等。该长石矿中有用矿物为钾长石和钠长石,主要的脉石矿物为石英和少量的含铁矿物。(2)长石除铁研究中,最佳磨矿细度为-0.074mm占52.22%,脱泥的最佳粒度是-0.030mm,磁选的最优条件为磁选背景场强1.0T、矿浆流速1.0cm/s、脉动频率500r/min。(3)通过对比六种不同的除铁工艺流程,最终确定“磨矿-脱泥-磁选”的除铁工艺效果最优,此工艺得到的长石精矿产率为86.71%、Fe2O3含量为0.03%、烧成白度为55.85%。(4)长石降硅研究中,碱性条件下正浮选石英效果最优,最佳捕收剂组合为GY/SN(胺类和磺酸盐类药剂)、最佳的阴阳离子捕收剂用量比为7、最佳总用量为320g/t,同时确定了先加阳离子捕收剂、后加阴离子捕收剂的添加顺序。(5)此长石原矿试样经“磨矿-脱泥-磁选-碱浮石英”的工艺流程,获得了产率为75.76%,K2O 11.65%、Na2O 3.99%、SiO2 65.26%、Al2O3 18.83%、Fe2O3 0.03%的精矿,可用于高级釉料的制备。
[Abstract]:With the decrease of high quality feldspar resources and the improvement of the market demand for the quality of feldspar, feldspar dressing and purification is particularly important. The feldspar in West Wuzhimuqin Banner of Inner Mongolia is rich in resources, but the burning whiteness is low and the content of quartz is high. In this feldspar ore, feldspar is mainly symbiotic with quartz and iron bearing minerals, and ore dressing and purification is the only effective way to remove these gangue minerals. On the basis of detailed study on the properties of raw ore samples, the feldspar is unable to meet the requirements of higher glaze grade feldspar. Experiments on grinding, desliming, magnetic separation, flotation removal of iron and flotation of quartz were carried out. The main chemical constituents of the ore are K 2O 10.21 and Na 2O 4.00. The main chemical composition of the ore is SiO2 66.95Al 2O 3 18.23, followed by the loss of 0.28% Fe 2O 3 0.12%. The useful minerals in the feldspar are potassium feldspar and albite. The main gangue minerals are quartz and a small amount of iron bearing minerals. The optimum grinding fineness is -0.074 mm, the optimum particle size of desliming is -0.030 mm, and the optimum conditions of magnetic separation are as follows: magnetic separation background field intensity 1.0 T, slurry velocity 1.0 cm / s, pulsation frequency 500rr 路min. 3) by comparing six different iron removal processes, Finally, the optimum iron removal effect of "grinding, desliming and magnetic separation" is determined. The yield of feldspar concentrate is 86.71% and Fe _ 2O _ 3 content is 0.03 and the firing whiteness is 55.85%. In the study of reducing silicon from feldspar, the effect of positive floatation of quartz is the best under alkaline condition, in which the content of Fe _ 2O _ 3 is 0.03 and the whiteness of burning is 55.85. The best collector combination is GY / N (amines and sulfonates), the best ratio of anionic and anionic collectors is 7, the best total dosage is 320g / t, and the first cationic collector is determined. After adding the anionic collector, the addition order of this feldspar raw ore sample is: through the technological process of "grinding, desliming, magnetic separation and alkali floating quartz", the concentrate with the yield of 75.76% K 2O 11.65% Na 2O 3.99% Sio 2 65.26U Al 2O 3 18.83% Al 2O 3 and Fe 0.03% can be obtained, which can be used in the preparation of high grade glaze.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD97

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