Experimental Study on Flotation of the Fine Ilmenite with a New Collector TZ-1
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摘要:
本论文将两种新型螯合剂与三种钛铁矿常规螯合剂对比，发现新药剂在选择捕收性上更有优势。将新螯合剂与油酸皂复配成新型捕收剂TZ-1，对攀西地区某厂微细粒级钛铁矿进行强化浮选实验研究，以解决该厂微细粒级钛铁矿资源回收率低的问题。实验结果表明，对-0.023 mm粒级的含量高达88%，TiO2品位为15.85%的微细粒钛铁矿原矿，采用新型TZ-1捕收剂配合硫酸和水玻璃使用，经“脱硫—一粗一扫四精”的闭路流程实验，最终获得TiO2品位47.29%，回收率58.41%的钛精矿。结果表明该新型TZ-1捕收剂可以有效解决该厂微细粒级钛铁矿回收率低的问题，同时对微细粒钛铁矿的高效回收利用具有指导意义。
Abstract:In this paper, two new chelating agents were compared with three ilmenite conventional chelating agents, and it was found that the new chelating agents had more advantages in selective collection. In order to solve the problem of low recovery of fine ilmenite in a plant Panzhihua–Xichang area, a new collector TZ-1 was prepared by combining the new chelating agent and oleic acid soap. The test results show that for the fine ilmenite raw ore with the content of -0.023 mm particles as high as 88% and TiO2 grade of 15.85%, the new TZ-1 collector is used with sulfuric acid and sodium silicate. After the closed-circuit test of desulphurization, one rough, one sweep and four fine, TiO2 grade of 47.29% is finally obtained. Titanium concentrate with 58.41% recovery. The results show that the new collector TZ-1 can effectively solve the problem of low recovery of fine ilmenite in the plant, and has guiding significance for the efficient recovery and utilization of ultrafine ilmenite.
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表 1 原矿的多元素化学分析/%
Table 1. Multielement chemical analysis of raw ore
TiO2 TFe FeO Fe2O3 CaO MgO SiO2 Al2O3 S 其他 15.85 16.43 19.21 2.74 7.44 9.80 19.56 7.13 0.69 1.15 
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表 2 原矿粒级组成
Table 2. Composition of raw ore grain size
粒级/mm 产率/% TiO2品位/% TiO2分布率/% -0.019 71.18 18.63 83.67 -0.023+0.019 17.37 11.08 12.14 -0.038+0.023 2.09 8.22 1.08 -0.074+0.038 7.41 5.07 2.37 +0.074 1.95 6.05 0.74 合计 100.00 15.85 100.00
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表 3 脱硫作业各产品结果
Table 3. Results of each product in desulfurization operation
产品名称 品位/% 回收率/% S TiO2 S TiO2 硫精矿 4.40 15.06 84.93 12.66 脱硫尾矿 0.12 15.97 15.07 87.34 原矿 0.69 15.85 100.00 100.00
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表 4 螯合剂种类实验结果
Table 4. Test results of chelating agent types
螯合剂 TiO2品位/% TiO2回收率/% 苯甲羟肟酸 26.38 81.75 水杨羟肟酸 25.43 83.21 8-OH喹啉 24.47 80.27 1# 23.63 92.89 2# 27.18 82.23
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表 5 硫酸用量与矿浆pH值的关系
Table 5. Relationship between the amount of sulfuric acid and pH of pulp
硫酸用量
/(g·t-1)1000 1200 1400 1600 1800 pH值 5.50 5.13 4.87 4.56 4.31
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表 6 开路实验结果
Table 6. Open-circuit test results
产品名称 产率/% TiO2品位/% TiO2回收率/% 硫精矿 13.54 15.16 12.95 尾矿 28.34 4.26 7.62 中矿1 18.07 5.03 5.73 中矿2 12.61 9.27 7.38 中矿3 6.86 18.85 8.11 中矿4 4.06 35.03 8.98 钛精矿 16.52 47.23 49.23 合计 100.00 15.85 100.00
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表 7 闭路实验结果
Table 7. Closed-circuit test results
产品名称 产率/% 品位/% 回收率/% S TiO2 S TiO2 硫精矿 13.73 4.38 15.32 87.16 13.27 钛精矿 19.58 0.09 47.29 2.55 58.41 尾矿 66.69 0.11 6.73 10.29 28.32 合计 100.00 0.69 15.85 100.00 100.00
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