矿产保护与利用2024，Vol.44Issue(6)：64-70,7.DOI:10.13779/j.cnki.issn1001-0076.2024.08.004
三氯化铁对超细铁尾砂絮凝的影响
Flocculation Effect of Ferric Chloride on Ultra-fine Tailings
摘要
Abstract
With the advancement of mineral processing technology,the diameter of tailings is getting smaller and smaller,even reaching the ultra-fine level.In order to realize the high concentration filling of ultrafine tailings in the concentrator,the flocculation settling and thickening of ultrafine tailings is the critical technology.Therefore,the flocculation of certain ultrafine iron tailings was studied with ferric chloride produced from iron and steel hydrochloric acid pickling waste liquor as a flocculant.The effects of ferric chloride dosage,stirring speed,and stirring time on the flocculation of ultra-fine iron tailings were investigated using an industrial CCD camera and image processing software(Image-Pro Plus).The experimental results show that when the amount of FeCl3 was 2 700 g/t,the speed of the magnetic stirrer was 800 r/min,the stirring time was 80 s,the particle size of the floc was 39.79 μm,and the fractal dimension was 1.92.Based on the Box-Behnken principle,response surface methodology was used to establish the multiple regression equation of the interaction among the amount of flocculant FeCl3,stirring speed,and stirring time on the flocculation of ultra-fine tailings,and ANOVA was used to analyse the experimental results.The results showed that the optimum conditions were 2 763.74 g/t of ferric chloride,832.76 r/min of stirring speed,95.89 s of stirring time,and 40.28 μm of floc particle size,and 1.92 of fractal dimension predicted by the model,which were consistent with the experimental results.The effect law of superfine tailings is obtained by studying flocculation conditions,which provides theoretical support for the practice of high-efficiency flocculation of superfine tailings.This study also realize the comprehensive utilization of waste acid,which is conducive to energy saving and emission reduction and reduces the cost of industrial production.关键词
铁尾砂/超细/絮凝/响应曲面法Key words
iron tailings/ultra-fine/flocculation/response surface method分类
矿业与冶金引用本文复制引用
牛福生,陈雨盈,张晋霞,刘飞..三氯化铁对超细铁尾砂絮凝的影响[J].矿产保护与利用,2024,44(6):64-70,7.基金项目
国家自然科学基金项目(52164018) （52164018）
