影响煤泥浮选效果的因素研究
Study on factors influencing slime flotation effects
田玉强 1符东旭 2李海涛 2岳丽荣 2张晓涛 3杨晓剡1
作者信息
- 1. 冀中能源股份有限公司邢台矿选煤厂,河北邢台 054000
- 2. 冀中能源股份有限公司,河北邢台 054000
- 3. 冀中能源股份有限公司中心化验室,河北邢台 054000
- 折叠
摘要
为了探索影响煤泥浮选效果因素的主次关系及最佳浮选参数组合,以邢台矿入浮煤泥为试验对象,选取叶轮转速、充气量、入料浓度、捕收剂用量、起泡剂用量五因素,采用Central composite Design(CCD)中心复合设计进行五因素五水平试验,建立以精煤灰分、精煤产率、尾矿灰分为响应值的多元回归模型,并通过对模型分析、优化,了解了各因素及因素之间的交互作用对煤泥浮选效果的影响,得到了针对试验煤泥的最佳浮选参数组合:叶轮转速为2 310r/min,充气量为0.38 m3/h,入料浓度为70.69 g/L,捕收剂用量为448.21 g/t,起泡剂用量为93.21 g/t.
Abstract
In order to explore the interrelation of the primary and secondary factors and the optimum combina-tion of operating parameters that influence the effects of slime flotation,the flotation feed of Xingtai Mine Coal Preparation Plant is taken as the object for case study,and tests are conducted on the levels of five selected factors of impeller speed,aeration quantity,feed concentration,dosage of collector and dosage of forther,using the Central Composite Design software(CCD).Meanwhile,the multi-element regression model is constructed with the ash and yield of flotation concentrate and ash of tailing as response values.Study results show that through analysis and optimization with the model,the effects on the performance of the flotation process pro-duced by various factors and their interaction have been brought to light,and the optimum operating parameters of impeller speed,aeration quantity,feed concentration,dosage of collector and dosage of frother which are fit for flotation of the slime under test are 2 310 r/min,0.38 m3/h,70.69 g/L,448.21 g/t,93.21 g/t,respectively.
关键词
浮选试验/Design-Expert/响应曲面法/搅拌速度/充气量/入料浓度/捕收剂用量/起泡剂用量Key words
flotation test/Design-Expert/response curved surface/agitating speed/aeration quantity/feed con-centration/dosage of collector/dosage of frother引用本文复制引用
出版年
2024
NETL
NSTL
万方数据