工程科学学报，第41卷，第8期：981-986,2019年8月 Chinese Journal of Engineering,Vol.41,No.8:981-986,August 2019 DOI:10.13374/j.issn2095-9389.2019.08.003;http://journals.ustb.edu.cn 基于超级絮凝的超细尾砂絮凝行为优化 吴爱祥12)，阮竹恩12)，王建栋12)，尹升华12)，艾纯明3) 1)北京科技大学金属矿山高效开采与安全教育部重点实验室，北京100083 2)北京科技大学土木与资源工程学院，北京100083 3)辽宁工程技术大学安全科学与工程学院，葫芦岛125105 区通信作者，E-mail:ziyuan0902re@163.com 摘要为了研究不同絮凝条件下超细尾砂的絮凝效果，本文基于超级絮凝理论，应用超级絮凝测试仪UFT-T℉S-029,采用 相对絮凝率表征人造超细尾砂在pH值为9-12、絮凝剂单耗f=2-20gt、料浆剪切速率y=100-2000s·,料浆固体体积 分数~=2%~14%等条件下的絮凝行为.发现相对絮凝率随着pH、絮凝剂单耗、剪切速率的增加均先增加后减少，而随着浆 料固体体积分数的增加逐渐减少，并获得了一定条件下的最优絮凝条件，即pH值为11f=12gt、y=500s、p=4%.同 时，固体体积分数越高，达到最优相对絮凝率所需的最优剪切速率对固体体积分数的依赖性也越高.因此，在实际生产中需要 对H、絮凝剂单耗、剪切速率与固体体积分数等工况参数进行调整，以达到最优絮凝效果.应用超级絮凝理论可实现超细尾 砂在极短时间内实现很好的絮凝，为基于流场剪切速率与停留时间的深锥浓密机进料井设计提供参考 关键词超细尾砂：阴离子聚丙烯酰胺：超级絮凝：剪切速率：絮凝行为优化 分类号TD853 Optimizing the flocculation behavior of ultrafine tailings by ultra-flocculation WU Ai-xiang2,RUAN Zhu-en',WANG Jian-dong'2),YIN Sheng-hua2),Al Chun-ming 1)Key Laboratory of the Ministry of Education of China for High-efficient Mining and Safety of Metal Mines,University of Science and Technology Bei- jing,Beijing 100083,China 2)School of Civil and Resource Engineering.University of Science and Technology Beijing,Beijing 100083.China 3)College of Safety Science and Engineering,Liaoning Technical University,Huludao 125105,China Corresponding author,E-mail:ziyuan0902rze@163.com ABSTRACT With the continuous pursuit of mineral resources and the development of mineral processing technology,ore is being ground more and more finely,which has resulted in large volumes of ultrafine tailings.However,ultrafine tailings are more difficult to separate from water than coarse tailings,which also makes the safe and efficient disposal of these tailings difficult.Normally,floccula- tion is an essential part of solid-liquid separation to improve the settling rate,and a polymer flocculant is widely used in treating ultra- fine tailings.To study the influence of flocculation conditions on the flocculation effect,ultra-flocculation theory and the UltraflocTester UFT-TFS-029 were used.The relative flocculation rate was applied to characterize the flocculation behavior of artificial ultrafine tail- ings under the conditions of pH 9-12,flocculant dosage fa=2g't-20gt,shear rate y=100 s-2000s,and solid volume fraction=2%-14%.The results indicate that the flocculation rate increases first and then decreases with pH,flocculant dosage,and shear rate.However,this rate decreases gradually with an increase in the solid volume fraction.The optimal flocculation conditions are:pH 11,f=12gt,y=500s,and =4%.Also,to achieve the optimal flocculation rate,the dependence of the optimal shear rate on the solid volume fraction also increases with the solid volume fraction.Therefore,it is necessary to adjust the operating 收稿日期：2019-02-22 基金项目：国家自然科学基金重点资助项目(51834001,51804015)：国家重点研发计划资助项目(2017YC0602903):金属矿山高效开采与安 全教育部重点实验室开放基金资助项目(ustbmslab.201806)工程科学学报,第 41 卷,第 8 期:981鄄鄄986,2019 年 8 月 Chinese Journal of Engineering, Vol. 41, No. 8: 981鄄鄄986, August 2019 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2019. 08. 003; http: / / journals. ustb. edu. cn 基于超级絮凝的超细尾砂絮凝行为优化 吴爱祥1,2) , 阮竹恩1,2) 苣 , 王建栋1,2) , 尹升华1,2) , 艾纯明1,3) 1) 北京科技大学金属矿山高效开采与安全教育部重点实验室, 北京 100083 2) 北京科技大学土木与资源工程学院, 北京 100083 3) 辽宁工程技术大学安全科学与工程学院, 葫芦岛 125105 苣通信作者, E鄄mail: ziyuan0902rze@ 163. com 摘 要 为了研究不同絮凝条件下超细尾砂的絮凝效果,本文基于超级絮凝理论,应用超级絮凝测试仪 UFT鄄鄄 卮FS鄄鄄029,采用 相对絮凝率表征人造超细尾砂在 pH 值为 9 ~ 12、絮凝剂单耗 f d = 2 ~ 20 g·t - 1 、料浆剪切速率 酌 = 100 ~ 2000 s - 1 、料浆固体体积 分数 渍 = 2% ~ 14% 等条件下的絮凝行为. 发现相对絮凝率随着 pH、絮凝剂单耗、剪切速率的增加均先增加后减少,而随着浆 料固体体积分数的增加逐渐减少,并获得了一定条件下的最优絮凝条件,即 pH 值为 11、f d = 12 g·t - 1 、酌 = 500 s - 1 、渍 = 4% . 同 时,固体体积分数越高,达到最优相对絮凝率所需的最优剪切速率对固体体积分数的依赖性也越高. 因此,在实际生产中需要 对 pH、絮凝剂单耗、剪切速率与固体体积分数等工况参数进行调整,以达到最优絮凝效果. 应用超级絮凝理论可实现超细尾 砂在极短时间内实现很好的絮凝,为基于流场剪切速率与停留时间的深锥浓密机进料井设计提供参考. 关键词 超细尾砂; 阴离子聚丙烯酰胺; 超级絮凝; 剪切速率; 絮凝行为优化 分类号 TD853 收稿日期: 2019鄄鄄02鄄鄄22 基金项目: 国家自然科学基金重点资助项目(51834001, 51804015);国家重点研发计划资助项目(2017YFC0602903);金属矿山高效开采与安 全教育部重点实验室开放基金资助项目(ustbmslab201806) Optimizing the flocculation behavior of ultrafine tailings by ultra鄄flocculation WU Ai鄄xiang 1,2) , RUAN Zhu鄄en 1,2) 苣 , WANG Jian鄄dong 1,2) , YIN Sheng鄄hua 1,2) , AI Chun鄄ming 1,3) 1) Key Laboratory of the Ministry of Education of China for High鄄efficient Mining and Safety of Metal Mines, University of Science and Technology Bei鄄 jing, Beijing 100083, China 2) School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China 3) College of Safety Science and Engineering, Liaoning Technical University, Huludao 125105, China 苣Corresponding author, E鄄mail: ziyuan0902rze@ 163. com ABSTRACT With the continuous pursuit of mineral resources and the development of mineral processing technology, ore is being ground more and more finely, which has resulted in large volumes of ultrafine tailings. However, ultrafine tailings are more difficult to separate from water than coarse tailings, which also makes the safe and efficient disposal of these tailings difficult. Normally, floccula鄄 tion is an essential part of solid鄄liquid separation to improve the settling rate, and a polymer flocculant is widely used in treating ultra鄄 fine tailings. To study the influence of flocculation conditions on the flocculation effect, ultra鄄flocculation theory and the UltraflocTester UFT鄄鄄卮FS鄄鄄029 were used. The relative flocculation rate was applied to characterize the flocculation behavior of artificial ultrafine tail鄄 ings under the conditions of pH 9鄄鄄12, flocculant dosage f d = 2 g·t - 1 鄄鄄20 g·t - 1 , shear rate 酌 = 100 s - 1 鄄鄄2000 s - 1 , and solid volume fraction 渍 = 2% 鄄鄄14% . The results indicate that the flocculation rate increases first and then decreases with pH, flocculant dosage, and shear rate. However, this rate decreases gradually with an increase in the solid volume fraction. The optimal flocculation conditions are: pH 11, f d = 12 g·t - 1 , 酌 = 500 s - 1 , and 渍 = 4% . Also, to achieve the optimal flocculation rate, the dependence of the optimal shear rate on the solid volume fraction also increases with the solid volume fraction. Therefore, it is necessary to adjust the operating