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摘要:
这是一篇矿物加工工程领域的论文。新疆某低品位萤石矿主要由萤石（28.85%）、方解石（43.26%）、石英（12.01%）和长石（10.28%）四种矿物组成。通过详细的选矿实验研究，在磨矿细度为-0.074 mm 65%时，以酸化水玻璃和改性碳水化合物EM-318为方解石抑制剂，植物基脂肪酸皂EM-OL3为萤石捕收剂，采用“两次粗选一次扫选八次精选”的工艺流程，浮选闭路实验获得了CaF2品位97.59%，CaF2回收率90.98%的萤石精矿。该实验研究表明，改性碳水化合物EM-318为方解石抑制剂，与植物基脂肪酸皂EM-OL3为萤石捕收剂配合使用，能够高效地实现萤石与方解石的分离。
Abstract:This is an essay in the field of mineral processing engineering. A low-grade fluorite ore is mainly composed of fluorite (28.85%), calcite (43.26%), quartz (12.01%) and feldspar (10.28%). Through detailed beneficiation test research, using acidized water glass and modified carbohydrate EM-318 as calcite inhibitors and using plant-based fatty acid soap EM-OL3 as fluorite collector,the fluorite concentrate with a grade of 97.59% and recovery of 90.98 % was obtained by the flowsheet of "-0.074 mm accounting for 65%, two roughings, one scavenging, and eight cleanings ". This experimental study shows that the combination of modified carbohydrate EM-318 and plant based fatty acid soap EM-OL3 as fluorite collector can efficiently separate fluorite from calcite,
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Key words:
- Mineral processing engineering /
- Fluorite ore /
- Carbonate /
- Collector /
- Recovery rate
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表 1 矿样主要化学多元素分析结果/%
Table 1. Main chemical multi-element analysis results of ore samples
CaF2 CaCO3 SiO2 Al2O3 Fe2O3 P2O5 MgO K2O Na2O S CO2 BaO 28.25 43.26 14.82 1.82 1.18 0.32 0.47 1.16 0.18 0.18 19.32 0.3 
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表 2 矿样的矿物含量测定结果/%
Table 2. Mineral content determination results of ore samples
萤
石方
解
石石
英长
石云
母黄
铁
矿磷
灰
石重
晶
石其
他合
计28.25 43.26 12.01 10.28 2.43 0.02 0.75 0.54 2.46 100.00
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表 3 开路实验结果
Table 3. Test results of open circuit
产品名称 产 率/% CaF2品位/% CaF2回收率/% 萤石精矿 20.65 98.45 69.15 中矿Ⅵ 1.29 93.93 4.11 中矿Ⅴ 1.65 88.19 4.94 中矿Ⅳ 2.01 65.83 4.49 中矿Ⅲ 2.50 29.45 2.50 中矿Ⅱ 4.23 14.31 2.06 中矿Ⅰ 10.11 7.64 2.63 扫选精矿 2.97 27.61 2.79 尾矿 54.59 3.95 7.33 原矿 100.00 29.41 100.00
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表 4 闭路实验结果
Table 4. Test results of closed-circuit
产品名称 产 率/% CaF2品位/% CaF2回收率/% 萤石精矿 26.90 97.59 90.98 尾矿 73.10 3.56 9.02 原矿 100.00 28.85 100.00
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表 5 萤石精矿化学多项分析结果/%
Table 5. Chemical multiple analysis results of fluorite concentrate
CaF2 CaCO3 SiO2 S Fe2O3 P As* 97.59 0.82 0.38 0.01 0.032 0.01 4.50 *单位为g/t
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