Flotation Test of Acid Leaching Tailings of Barium Slag in Guizhou
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摘要:
这是一篇矿物加工工程领域的论文。钡渣为有毒固废，大量钡渣堆存严重危害环境且对国土资源造成巨大浪费。酸性浸出钡渣中酸溶钡是钡渣无害处理及回收钡最佳途径之一。论文采用浮选工艺回收富集钡渣酸浸尾渣中硫酸钡，以期实现综合回收钡渣中钡资源。浮选回收钡渣酸浸渣实验研究，在碳酸钠用量2000 g/t，硅酸钠用量500 g/t以及油酸钠用量3000 g/t的条件下，通过一次粗选、四次精选、两次扫选的浮选闭路流程，获得重晶石精矿品位85.38%、回收率69.35%的浮选指标，精矿产品达到工业生产碳酸钡用料重晶石标准。
Abstract:This is an article in the field of mineral processing engineering. Barium slag is toxic solid waste, and a large amount of barium slag is piled up to seriously harm the environment and cause huge waste of national land resources. Acid-dissolving barium in acid leaching barium residue is one of the best ways to dispose of barium residue and recover barium. The paper adopts the flotation process to recover the barium sulfate in the acid leaching tailings of the enriched barium slag, in order to realize the comprehensive recovery of barium resources in the barium slag. The experimental research of the flotation recovery of barium residue acid leaching residue shows that. Under the condition that the amount of sodium carbonate is 2000 g/t, the amount of sodium silicate is 500 g/t and the amount of sodium oleate is 3000 g/t, through the flotation closed-circuit process of one roughing, four beneficiation, and two sweeping. Obtained the flotation index of 85.38% barite concentrate grade and 69.35% recovery rate. Concentrate products meet the barite standards used in the industrial production of barium carbonate.
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Key words:
- Mineral processing engineering /
- Barium residue /
- Acid leaching residue /
- Flotation /
- Barite
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表 1 酸浸渣多元素分析结果/%
Table 1. Chemical compositions of acid leaching residue
SiO2 BaO SO3 Al2O3 K2O Fe2O3 Na2O CaO 其他 36.23 31.14 16.26 6.95 2.04 1.34 1.21 1.15 3.67 
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表 2 酸浸渣浮选开路实验结果
Table 2. Open circuit test results of acid leaching residue flotation
产品名称 产率/% BaSO4品位/% BaSO4回收率/% 精矿 16.84 87.18 30.70 中矿1 10.02 40.79 8.55 中矿2 6.14 53.50 6.87 中矿3 5.79 60.38 7.31 中矿4 7.13 70.95 10.58 中矿5 24.41 44.65 22.79 中矿6 15.35 20.18 6.48 尾矿 14.33 22.42 6.72 原矿 100.00 47.81 100.00
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表 3 酸浸渣浮选闭路实验结果
Table 3. Flotation test results of acid leaching residue
产品名称 产率/% BaSO4品位/% BaSO4回收率/% 精矿 38.84 85.38 69.35 尾矿 61.16 23.96 30.65 原矿 100.00 47.81 100.00
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