本文選題：APAM + 全尾砂��； 參考：《中國(guó)有色金屬學(xué)報(bào)》2017年02期

【摘要】：以某鉛鋅銀礦全尾砂沉降試驗(yàn)為例,分析添加不同絮凝劑單耗時(shí),全尾砂漿渾液面沉速的變化規(guī)律,旨在探究3個(gè)不同沉降階段的機(jī)理。結(jié)果表明:隨添加相對(duì)分子質(zhì)量為8×10~6的陰離子聚丙烯酰胺(APAM)單耗的增加,1 min內(nèi)全尾砂漿的渾液面沉速先增加后減小;在加速自由沉降段,游離的"細(xì)"顆粒尾砂及過(guò)多的絮團(tuán)水影響了渾液面沉速;在干涉沉降段,空間位阻效應(yīng)導(dǎo)致的尾砂顆粒間互相排斥降低了渾液面沉速;在壓縮沉降段,孔隙水減少及絮團(tuán)水增加改變界面沉速;絮凝劑單耗0、10、20、30和40 g/t分別表示無(wú)、低、合理、高和超量。
[Abstract]:Taking the whole tailings settlement test of a lead-zinc silver mine as an example, this paper analyzes the variation law of settling velocity of muddy liquid surface with different flocculant single time consuming and full tail mortar, in order to explore the mechanism of three different settling stages. The results show that with the increase of unit consumption of anionic polyacrylamide (APAM) with relative molecular weight of 8 脳 10 ~ (6), the settling velocity of muddy liquid surface of full-tail mortar firstly increases and then decreases in 1 min. Free "fine" particle tailings and excessive floc water affect the settling velocity of muddy liquid surface; in the interference settlement section, the velocity of settling of muddy liquid surface is reduced by mutual exclusion between the particles caused by the spatial steric resistance effect; in the compression settlement section, the settling speed of muddy liquid surface is reduced by the free "fine" particle tailings and too much floc water. The decrease of pore water and the increase of flocculation water change the interfacial sedimentation rate, and the flocculant consumption of 0 10% 20% 30 and 40 g / t respectively means no, low, reasonable, high and excess.
【作者單位】： 中南大學(xué)資源與安全工程學(xué)院;
【基金】：國(guó)家“十二五”科技支撐計(jì)劃資助項(xiàng)目(2013BAB02B05)~~
【分類號(hào)】：TD853.34

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本文編號(hào)：2053507