Titanium flotation dynamics study for a beneficiation plant in Panxi
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摘要: 针对攀西某选厂粗粒浮选流程，研究了选钛浮选机的动力学特性。利用排水取气法对不同作业的浮选机的充气量和空气分散度进行了测试。结果表明：钛粗扫选充气量0.16～0.51 m3/(m2·min)。直流槽浮选机空气分散度明显优于吸浆槽浮选机。浮选机内矿化气泡从距溢流堰深度1000 mm运动到200 mm的过程中，携带的矿物品位几乎不变，气泡负载基本相当，说明粗选矿化气泡运动至距溢流堰深度1 000 mm后比较稳定，矿物颗粒粘附在气泡上较难脱落。浮选机内存在较为明显的分层现象，即距溢流堰1 500 mm以下矿浆浓度相差不大，随着距溢流堰深度减小，浓度明显下降。Abstract: The paper studies the dynamics characteristics of flotation cells for a beneficiation plant in Panxi. Based on the method of collecting air via draining water, the air flowrate is 0.16~0.51 m3/(m2·min) for rougher and scavenger. The air dispersion of direct flow cell is better than that of the pumping cell. During mineralized bubbles transporting from 1 000 mm towards 200 mm distance from the lip, the grade of mineral and bubble loading is almost same. It demonstrates that mineralized bubbles are stable after the mineralized bubbles transporting to 1 000 mm and minerals are difficult to detach from the bubbles. The solid concentration exists layering in flotation cell. Deeper than 1 500 mm from the lip, the solid concentration remains similar. With the distance decreasing, the solid concentration decreases sharply.
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Key words:
- titanium /
- flotation /
- air dispersion /
- bubble loading /
- concentration distribution
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表 1 充气量和空气分散度测试结果
Table 1. Test data for air flowrate and air dispersion
作业位置 充气量Jg /[ m3·(m2·min)−1] 空气分散度 1 2 3 4 5 6 扫一第3槽 0.35 0.33 0.35 0.31 0.33 0.28 4.64 扫二第1槽 0.43 0.42 0.33 0.31 0.24 0.30 1.79 
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表 2 气泡负载分布
Table 2. Data for bubble loading distribution
距溢流堰深度/mm TiO2品位/% 气泡负载/(g·L−1) 1000 49.18 62 700 49.35 102 350 49.84 60 200 49.98 55
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表 3 浮选机内浓度分布
Table 3. Data of concentration distribution in flotation cell
离溢流堰
深度/mm粗一第1槽（XCF-16） 粗一第4槽（KYF-16） 浓度/% TiO2品位/% 浓度/% TiO2品位/% 200 27.00 33.42 12.15 9.42 500 21.13 33.00 12.39 8.00 1000 53.01 15.06 22.94 4.45 1500 57.09 15.38 39.79 3.30 2 000 55.69 14.65 42.06 5.46 2200 54.79 14.57 42.88 3.47
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