Experimental Study on Flotation XinJiang Bertrandite Using Combination Collectors
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摘要:
针对新疆某含铍（BeO）0.45%的羟硅铍石浮选中，单一捕收剂选择性较低、精矿品位不高的问题，试验采用油酸钠和苯甲羟肟酸组合捕收剂。通过浮选条件试验的优化，结果发现，当组合捕收剂用量为1 000 g/t时（油酸钠GA6FA苯甲羟肟酸质量比为9 GA6FA 1），二者预先混合后加入，浮选效果最佳，经过四次开路精选，能够得到BeO品位10.22%的铍精矿，富集效果较好，可以为类似的羟硅铍石资源回收提供有效的技术支撑。混合药剂的溶液化学分析表明，在二者混合的水溶液pH值8.25左右时，苯甲羟肟酸分子组分和离子组分浓度相当，这可能是产生预先混合协同效果的原因。
Abstract:In the flotation of bertrsandite in Xinjiang with the grade of BeO 0.45%, the selectivity was a bit low and the grade of concentration is not quite high when single collector was used. In order to deal with the problem above, sodium oleate and benzohydroxamic acid were used together. It is found after optimizing the flotation condition tests that when the proportion of sodium oleate and benzohydroxamic acid was 9 GA6FA 1, they are mixed before adding to the pulp and in this condition the optimum flotation effect can be gotten. When the dosage of collector was 1 000 g/t and collector was added beforehand, beryllium concentrate with grade 10.22% could be received after four times open circuit concentration, which showed the better concentration effect and provided effective technological support for recovering similar bertrsandite. The solution chemistry results of mixed reagents showed that when the pH value of mixed solution was approximately 8.25, the molecular concentration of benzohydroxamic acid is quite similar to ion concentration, which may results in assembly synergy.
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Key words:
- collector /
- flotation /
- combination /
- bertrsandite /
- sodium oleate /
- benzohydroxamic acid
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表 1 矿石化学多元素分析结果 /%
Table 1. The results of multielement analysis of raw ore
成分 BeO SiO2 Al2O3 CaO MgO K2O Na2O F TFe 含量 0.45 66.48 14.20 2.47 3.23 3.19 3.54 1.00 2.99 
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表 2 捕收剂加入方式试验结果
Table 2. Results of the experiments on collector combinations
方案 产品名称 产率/% BeO品位/% BeO回收率/% (1) 精矿 9.93 3.210 71.51 (2) 精矿 10.06 3.206 71.63 (3) 精矿 9.95 3.220 71.47 (4) 精矿 10.37 3.233 73.05
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表 3 精选开路试验结果
Table 3. Results of the open concentration flotation
产品名称 产率/% BeO品位/% BeO回收率/% 精矿 1.54 10.22 34.81 M1 3.84 1.134 9.63 M2 2.68 2.227 13.20 M3 1.88 2.734 11.37 M4 0.43 4.432 4.22 尾矿 89.63 0.135 26.77 原矿 100.00 0.45 100.00
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