%0 Journal Article
%T 操作参数对浮选柱分选效果的影响
%A 葛咸浩
%J 洁净煤技术
%D 2013
%X 介绍了浮选在选煤中的作用以及旋流微泡浮选柱的工作原理和分选特点。在实验室浮选柱系统上研究了药剂水平、入料浓度以及中矿循环压力对煤泥分选效果的影响。结果表明:精煤灰分随起泡剂用量的增加先降低后升高,随捕收剂用量的增加逐渐增加,随入料浓度和循环压力的增加而升高;起泡剂较少时,精煤产率随捕收剂用量的增加先降低后升高,起泡剂较多时,随捕收剂用量的增加先升高后降低,随入料浓度的增加先升高后降低,随起泡剂和循环压力的增加而升高。在较低的循环压力下,浮选完善指标随入料浓度的增加先升高后下降;在较高循环压力下,浮选完善指标随入料浓度的增加持续降低。综合考虑,选择捕收剂用量为1600 g/t,起泡剂用量为350 g/t时,煤泥浮选效果最好。实际生产中,在满足精煤灰分要求的前提下,通常采用适中的循环压力,而入料质量浓度尽量控制在100 g/L以下,才能达到理想的分选效果。 Introduce the role of flotation in coal preparation,along with the operation principle and separation characteristics of cyclonic micro-bubble flotation column.Conduct the experiments to explore the impact of drug dosage,feeding concentration and cycling pressure of middling on separation effect through laboratory-scale flotation column system.The results indicate that,the ash content of concentrate first decrease,then increase with the drug dosage increase,it also increase with feeding concentration and cycling pressure.When the frother dosage is less,the concentrate yield first decrease,then increase,which first increase,then decrease when adding more forther dosage.Increasing the collector dosage and feeding concentration,the clean coal yield first increase,then decrease.The clean coal yield increase continously with the increase of frother dosage and cycling pressure.The perfect index of flotation first increase,then decrease with collector dosage,and increase continuously with frother dosage.Under the condition of low cycling pressure,the perfect index first increase,then decrease with feeding concentration.When the cycling pressure get higher,it decrease continuously with the increase of feeding concentration.The slime flotation effect is the best when the dosage of collector and frother is 1600 g/t and 350 g/t respectively.During practical production,under the premise of satisfying clean coal ash,through controling moderate circulating pressure and limit the feeding concentration less than 100 g/L can get better separation effect
%K 浮选柱
%K 捕收剂
%K 起泡剂
%K 入料浓度
%K 循环压力 flotation column
%K collector
%K frother
%K feeding concentration
%K circulating pressure
%U http://www.jjmjs.com.cn/WKD/WebPublication/paperDigest.aspx?paperID=8e27f018-abac-4ed1-a96f-fce0f029bfac