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摘要:
以吉林某高铁钾长石矿为研究对象,通过X射线衍射分析、电子探针分析、光学显微镜分等分析手段对钾长石矿样进行化学组成、矿物嵌布状态以及粒度组成等工艺矿物学研究。研究结果表明,该矿样中主要是钾长石、钠长石、石英,铁元素主要分布在赤铁矿、褐铁矿以及磁铁矿中。矿样中钾长石以针柱状的细粒产出,部分铁矿物嵌布在钾长石微晶基底、孔洞边缘或浸染在脉石矿物中,为复杂难处理钾长石矿。且-0.0385 mm矿样中Fe2O3含量达到2.36%,需要在后续处理中进行脱泥、磁选、浮选、酸洗作业才能使产品达到高端钾长石市场要求。
Abstract:By means of X-ray diffraction analysis, scanning electron probe microanalysis and optical microscopy, the chemical composition and mineral intercalation and particle size composition of potassium feldspar in Jilin were studied. The results show that main minerals in the ore is potassium feldspar, albite and quartz, and the iron elements are mainly distributed in hematite, limonite and magnetite. Potassium feldspar is present in the form of needle-shaped fine grain and some iron ore is embedded in the microcrystalline base of potassium feldspar and the edge of hole or immersed in gangue mineral, so the ore belongs to a more difficult ore. In the ore that particle size less than 0.0385 mm, the Fe2O3 content reaches 2.36%. All that means the sample needs to be desliming, magnetic separation, flotation and pickling in the follow-up treatment to make the product meet the high-end potassium feldspar market requirements.
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Key words:
- Potassium feldspar /
- Process mineralogy /
- Hematite /
- High iron
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表 1 钾长石矿多元素分析结果/%
Table 1. Multi-elemental analysis results of potassium feldspar ores
O Na V Al Si P S K Ca Ti 46.64 0.435 0.032 9.359 29.204 0.017 0.037 12.78 0.11 0.075 Mn TFe Ni Ga Rb Sr Zr Ag Pb Y - 1.201 - 0.003 0.048 0.010 0.036 - 0.010 0.003 表 2 钾长石矿铁物相分析结果
Table 2. Iron phase analysis results of potassium feldspar ores
铁物相 碳酸铁 磁铁矿 硫化铁 赤褐铁矿 硅酸铁 总铁 含量/% 0.111 0.088 0.065 0.719 0.217 1.201 分布率/% 9.28 7.39 5.39 59.87 18.07 100.00 表 3 钾长石矿电子探针化学成分分析结果/%
Table 3. Electron probe analysis of potassium feldspar ores
SiO2 Al2O3 TFe CaO Na2O K2O 总量 64.63 18.10 0.21 - 0.22 16.12 99.28 65.32 18.20 0.25 - 0.28 16.03 100.08 64.89 18.10 0.06 0.02 0.13 16.46 99.66 64.46 18.07 0.27 0.04 0.17 16.89 99.92 表 4 铁矿物电子探针化学成分分析结果/%
Table 4. Electron probe analysis of iron ores
SiO2 Al2O3 TFe CaO Na2O K2O 总量 3.03 0.03 75.50 - 0.07 0.04 78.67 2.99 0.08 77.47 0.05 0.09 0.12 80.85 11.37 1.40 67.10 0.34 0.22 0.15 80.69 3.96 0.04 74.98 0.03 - 0.08 79.35 表 5 钾长石矿粒度组成分析
Table 5. Analysis of size composition of potassium feldspar ores
粒级/mm 产率/% 含量/% SiO2 Al2O3 K2O Na2O CaO Fe2O3 Ti02 MnO +0.30 72.86 57.77 14.24 13.12 0.51 0.13 0.92 0.10 0.02 -0.3+0.15 10.15 59.28 14.52 12.99 0.46 0.15 1.03 0.11 0.03 -0.15+0.11 5.90 60.29 14.98 13.20 0.46 0.27 1.23 0.15 0.05 -0.11+0.074 5.08 58.79 14.48 13.04 0.49 0.28 1.38 0.18 0.07 -0.074+0.0385 4.52 59.17 14.47 12.40 0.49 0.38 1.76 0.17 0.09 -0.0385 1.49 63.07 15.80 13.07 0.57 0.58 2.36 0.27 0.09 -
[1] 李小静, 张福存, 方大文. 长石精加工现状及发展趋势[J]. 金属矿山, 2003(2):46-47+57. doi: 10.3321/j.issn:1001-1250.2003.02.015
LI X J, ZHANG F C, FANG D W. The status quo and development trend of feldspar finishing[J]. Metal Mine, 2003(2):46-47+57. doi: 10.3321/j.issn:1001-1250.2003.02.015
[2] 胡兆扬. 非金属矿工业手册[M]. 北京: 冶金工业出版社, 1992.
HU Z Y. Handbook of non-metallic mineral industry[M]. Beijing: Metallurgical Industry Press, 1992.
[3] 任子杰, 罗立群, 张凌燕. 长石除杂的研究现状与利用前景[J]. 中国非金属矿工业导刊, 2009(1):19-22. doi: 10.3969/j.issn.1007-9386.2009.01.005
REN Z J, LUO L Q, ZHANG L Y. Research status and prospects of feldspar impurity removal[J]. China Non-metallic Mineral Industry Guide, 2009(1):19-22. doi: 10.3969/j.issn.1007-9386.2009.01.005
[4] 程福超. 某低品位钾长石选矿厂工艺研究与设计[D]. 阜新: 辽宁工程技术大学, 2014.
CHEN F C. Process research and design of a low-grade potassium feldspar beneficiation plant [D]. Fuxin: Liaoning Technical University, 2014.
[5] 胡波, 韩效钊, 肖正辉, 等. 我国钾长石矿产资源分布、开发利用、问题与对策[J]. 化工矿产地质, 2005(1):25-32. doi: 10.3969/j.issn.1006-5296.2005.01.005
HU B, HAN X Z, XIAO Z H, et al. Distribution, development and utilization, problems and countermeasures of potash feldspar mineral resources in my country[J]. Chemical Minerals Geology, 2005(1):25-32. doi: 10.3969/j.issn.1006-5296.2005.01.005
[6] 才秀芹, 冯明良, 王丽仙. 玻璃生产中铁的作用与危害[J]. 玻璃, 2010, 37(7):19-24. doi: 10.3969/j.issn.1003-1987.2010.07.007
CAI X Q, FENG M L, WANG L X. The role and harm of iron in glass production[J]. Glass, 2010, 37(7):19-24. doi: 10.3969/j.issn.1003-1987.2010.07.007
[7] 李潇雨, 周满赓, 王婧. 工艺矿物学研究对选矿工艺的重要作用——以宁乡式鲕状赤铁矿为例[J]. 矿产综合利用, 2015(1):45-50. doi: 10.3969/j.issn.1000-6532.2015.01.011
LI X Y, ZHOU M G, WANG J. Important role of technological mineralogy research on beneficiation technology——taking Ningxiang-style oolitic hematite as an example[J]. Multipurpose Utilization of Mineral Resources, 2015(1):45-50. doi: 10.3969/j.issn.1000-6532.2015.01.011
[8] 王蓓, 单勇, 赵培樑, 等. 工艺矿物学对难选矿石评价的意义[J]. 矿产综合利用, 2015(1):58-60+50. doi: 10.3969/j.issn.1000-6532.2015.01.013
WANG B, SHAN Y, ZHAO P L, et al. Significance of process mineralogy for the evaluation of refractory ore[J]. Multipurpose Utilization of Mineral Resources, 2015(1):58-60+50. doi: 10.3969/j.issn.1000-6532.2015.01.013