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改性含钛高炉渣中钙钛矿浮选分离工艺研究

Study on the Flotation Separation of Modified Ti-bearing Blast Furnace Slag
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摘要 为了实现攀钢含钛高炉渣中钛组分的有效回收,对其进行了化学组分的调整和高温选择性析出处理,在此基础上,进行了改性渣中主要矿物的浮选、人工混合矿浮选、改性渣浮选等研究。结果表明,辛基异羟肟酸(OHA)对三种矿物表现出一定的捕收能力和选择性;捕收剂与抑制剂用量对浮选效果未有明显效果,且耗酸量较大;通过SEM和EDX分析表明,各矿物表面被针状硫酸钙覆盖导致捕收剂与抑制剂对矿物的作用效果减弱,因此需要寻求较为有效的表面处理剂对改性渣处理后再进行浮选分离。 In order to achieve the high-efficiency recovery of titanium component in the titanium-blast furnace slag,the slag had been modified in terms of its chemical compositions and treated through the process of high temperature selective precipitation. The maximum crystal size and quantity of the resulted pervoskte was 63. 17 μm and 30. 62%,respectively. Based on the previous results,the study on the flotation of the modified slag had been carried out,including the effect of OHA dosage and sodium silicate dosage. It is found out that the OHA dosage and sodium silicate dosage do not affect the flotation obviously.SEM and EDX analysis show that the CaSO_4 micro-precipitate covers the surfaces of the minerals,which decreases the effect of OHA and sodium silicate. Therefore,the effective surface treatment agents should be developed to preprocess the modified slag prior to flotation separation.
作者 张士秋 王维清 郑禹 任鹏坤 闫武 邓杰 Zhang Shiqiu;Wang Weiqing;Zheng Yu;Ren Pengkun;Yan Wu;Deng Jie;School of Environment and Resource,Southwest University of Science and Technology;Key Laboratory of Solid Waste Treatment and Resource Recycle Ministry of Education;Key Laboratory of Vanadium-titanium Magnetite Comprehensive Utilization,Ministry of Land and Resources
出处 《钢铁钒钛》 北大核心 2017年第3期71-77,共7页 Iron Steel Vanadium Titanium
基金 矿物加工科学与技术国家重点实验室开放研究基金专项资助项目(BGRIMM-KJSKL-2015-07) 西南科技大学研究生创新基金资助项目(16ycx042) 固体废物处理与资源化教育部重点实验室开放基金项目(13zxsk06)
关键词 含钛高炉渣 改性处理 钙钛矿 辛基异羟肟酸 浮选分离 titanium-bearing blast furnace slag modified slag perovskite octyl hydroxamic acid flotation separation
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