Research on Sandium Extraction of Scandium Vanadium Titanomagnetite in Panzhihua
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摘要:
这是一篇矿物加工工程领域的论文。攀枝花某钒钛磁铁矿尾矿中的钪主要以类质同象形式赋存于辉石和钛铁矿中,部分辉石及其他硅酸盐矿物嵌有钛磁铁矿,钒钛磁铁矿尾矿中的矿物嵌布关系复杂,性质相似,钪元素含量低而且分散。对该钒钛磁铁矿尾矿,采用擦洗-沉降预抛尾-选择性二段磨矿-阶段反浮选抛尾工艺,抛除的尾矿产率为30.32%,实现了有效抛尾;钪元素得到较好富集,钪含量由60.96 g/t提高到70.90 g/t,Sc2O3回收率为81.04%。
Abstract:This is an essay in the field of mineral processing engineering. Sandium in vanadium titan-magnetite tailings in Panzhihua is mainly found in pymene and titanium ore, some pymene and other silicate minerals are embedded with titanium tailings, and the mineral embedding has complex relationship and similar properties, low and scattered scandium element content, scrub-settlement pre-dumping-selective two-stage anti-flotation dumping is adopted; the dumping rate is 30.32%; scandium element is increased from 60.96 g/t to 70.90 g/t, and the Sc2O3 recovery rate is 81.04%.
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表 1 试样多元素分析结果/%
Table 1. Multi-element analysis results of samples
Sc2O3* SiO2 CaO MgO Fe2O3 Al2O3 P2O5 TiO2 Na2O SO3 59 42.17 12.91 11.28 10.85 10.23 1.04 3.26 1.95 1.01 *单位为g/t。 表 2 矿石矿物组成/%
Table 2. Mineral composition of the ore
钛磁铁矿 云母 钛铁矿 角闪石 磁黄铁矿 绿泥石 黄铁矿 帘石 蓝铜矿 7.57 1.6 19.59 0.94 0.06 0.69 0.8 0.25 0.23 石榴石 磷灰石 赤、褐铁矿 辉石 橄榄石 长石 石英 榍石 锆石 0.56 2.12 0.48 43.27 5.34 16.31 0.09 0.06 0.04 表 3 钪在主要矿物中的分配率
Table 3. Distribution of scandium in major minerals
矿物 矿物量/% Sc2O3
含量/(g/t)Sc2O3的
配分量/(g/t)Sc2O3的
分配率/%钛磁铁矿 7.57 29 2.2 4.36 钛铁矿 19.59 45 8.82 17.53 辉石类 44.21 79 34.93 69.42 长石 16.31 16 2.61 5.19 橄榄石类 5.34 33 1.76 3.50 其他 6.98 0 0 0.00 100.00 50.32 100.00 表 4 单一反浮选抛尾捕收剂选择实验结果
Table 4. Results of single reverse flotation tailing trap selection test
浮选药剂
及用量/(g/t)产品
名称产率/% Sc2O3
含量/(g/t)Sc2O3
回收率/%KX302:200 精矿 84.31 62.60 87.18 尾矿 15.69 49.50 12.82 原矿 100.00 60.55 100.00 淀粉:500
KX302:200精矿 82.68 61.40 86.53 尾矿 17.32 45.60 13.47 原矿 100.00 58.66 100.00 淀粉:500
KX986:200精矿 77.66 61.42 80.23 尾矿 22.34 52.60 19.77 原矿 100.00 59.45 100.00 淀粉:500
E1000:200精矿 67.12 63.00 71.25 尾矿 32.88 51.90 28.75 原矿 100.00 59.35 100.00 淀粉:500
醚胺盐:200精矿 83.16 60.80 85.97 尾矿 16.84 49.00 14.03 原矿 100.00 58.81 100.00 表 5 电选实验结果/%
Table 5. Results of electric selection test
电选
参数产品
名称产率/% Sc2O3
含量/(g/t)Sc2O3
分布率/%转速:180 r/min
电压:22 kv精矿 19.61 47.30 18.57 中矿 77.88 50.70 79.03 尾矿 2.51 47.80 2.40 原矿 100.00 49.96 100.00 转速:180 r/min
电压:25 kv精矿 31.12 51.60 31.22 中矿 66.46 51.50 66.54 尾矿 2.42 47.50 2.24 原矿 100.00 51.43 100.00 转速:250 r/min
电压:25 kv精矿 16.71 48.90 16.63 中矿 79.52 49.20 79.62 尾矿 3.77 48.90 3.75 原矿 100.00 49.13 100.00 表 6 擦洗-沉降预抛尾实验对比结果
Table 6. Comparison results of scrub-settlement pre-tail test
调浆分散
剂添加产品
名称产率/% Sc2O3
含量/(g/t)Sc2O3
分布率/%①空白 矿泥 9.26 28.6 4.41 钪粗精矿 90.74 63.30 95.59 原矿 100.00 60.08 100.00 ②碳酸钠10 kg/t 矿泥 12.02 50.9 10.90 钪粗精矿 87.98 56.80 89.10 原矿 100.00 56.11 100.00 ③六偏磷酸钠10 kg/t 矿泥 10.51 46.70 8.37 钪粗精矿 89.49 61.10 91.63 原矿 100.00 58.62 100.00 表 7 擦洗-沉降预抛尾-选择性二段磨矿-阶段反浮选抛尾实验结果/%
Table 7. Test results of scrub-settlement pre-tail-selective secondary grinding-stage and reverse flotation
产品名称 产率/% Sc2O3含量/(g/t) Sc2O3分布率/% 矿泥 10.71 16.00 2.81 尾矿 19.61 48.60 16.15 精矿 69.68 70.90 81.04 原矿 100.00 60.96 100.00 -
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