基于响应面法外场作用下全尾砂浓密沉降试验  

Thickening sedimentation of unclassified tailings under influence of external field based on response surface method

作　　者：诸利一 吕文生[1,2] 杨鹏[2,3] 王志凯 ZHU Li-yi;Lü Wen-sheng;YANG Peng;WANG Zhi-kai(Key Laboratory of High-Efficient Mining and Safe of Metal,Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China;Beijing Key Laboratory of Information Service Engineering,Beijing Union University,Beijing 100101,China)

机构地区：[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]北京联合大学北京市信息服务工程重点实验室,北京100101

出　　处：《中国有色金属学报》2018年第9期1908-1917,共10页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(51641401);国家"十二五"科技支撑计划资助项目(2012BAB08B01)~~

摘　　要：为提高全尾砂料浆浓密沉降的质量浓度,将超声波引入全尾砂料浆浓密沉降试验中。利用MATLAB模拟超声波在全尾砂料浆中的指向性,进而选取出超声波频率范围。采用Design-Expert软件设计,并分析不同条件下超声波对全尾砂料浆最终质量浓度的影响,以及各因素之间的耦合关系,进而优化超声波作用条件。结果表明:当超声波频率为20~40 kHz时,在砂仓中传播指向性较好;超声波外场作用能显著提高全尾砂料浆的最终质量浓度,当全尾砂自然沉降19.77 min后,施加频率20.02 kHz、功率50 W的超声波为最优作用条件,全尾砂料浆最终质量浓度可达77.51%,比自然沉降的最终质量浓度提高4.60%;在合适的超声场条件下,超声波在提高全尾砂料浆的最终质量浓度具有明显优越性。In order to improve the mass concentration of unclassified tailings slurry thickening sedimentation,the ultrasonic technology was introduced into the thickening sedimentation test of unclassified tailings slurry.MATLB was used to simulate the directivity of the ultrasonic in unclassified tailings slurry,and then the ultrasonic frequency range was selected.Meanwhile,The Design-Expert software was used to design and analyze the effect of ultrasonic on the final mass concentration of the tailings slurry and the coupling relationship between the factors,and then optimize the ultrasonic action conditions.The results show that,when the ultrasonic frequency is about 20-40 kHz,dissemination is better in vertical sand silo.The final mass concentration of the unclassified tailing slurry has been significantly increased under ultrasonic.The best conditions for ultrasonic application are frequency 20.02 kHz,power 50W and natural sedimentation time 19.77min.And the final mass concentration of unclassified tailings slurry reaches 77.51%,which is 4.60%higher than the final concentration of natural sedimentation.Therefore,ultrasound wave is capable of improving the final mass concentration under the condition of suitable ultrasound field.

关 键 词：充填采矿 全尾砂 响应面 超声波 浓密沉降 

分 类 号：TD853[矿业工程—金属矿开采]