【摘要】：為研究煤泥水中最難處理的黏土礦物高嶺石的沉降特性及懸浮液失穩(wěn)的影響因素,利用Zeta電位儀和Turbiscan lab穩(wěn)定性分析儀,采用穩(wěn)定性動(dòng)力學(xué)指數(shù)(TSI)和EDLVO理論,計(jì)算研究了煤系高嶺石濃度、陽離子種類、陽離子濃度對(duì)高嶺石懸浮液穩(wěn)定性的影響。結(jié)果表明:隨著高嶺石懸浮液濃度的增加,體系TSI值越小,體系越穩(wěn)定;高嶺石懸浮液中加入陽離子,體系TSI值變大,體系明顯失穩(wěn)。陽離子濃度越大,體系TSI值越大,能壘越低,體系越不穩(wěn)定;不同種類的陽離子對(duì)高嶺石懸浮液失穩(wěn)作用強(qiáng)度不同,在相同的離子強(qiáng)度下,陽離子對(duì)懸浮液失穩(wěn)作用的強(qiáng)弱順序依次為Na+Mg~(2+)Ca~(2+)。
[Abstract]:In order to study the sedimentation characteristics of the most difficult clay mineral kaolinite in the coal slime water and the influence factors of the suspension stability, the stability dynamic index (TSI) and the EDLVO theory are used to calculate the concentration and the cation species of the coal-based kaolinite by using the Zeta potential meter and the Turbiscan lab stability analyzer. The effect of the cationic concentration on the stability of the kaolinite suspension. The results show that with the increase of the concentration of the kaolinite suspension, the smaller the system TSI value, the more stable the system, the addition of the cation in the kaolinite suspension, the change of the system TSI value and the obvious instability of the system. The higher the cation concentration, the higher the system TSI value, the lower the energy barrier, the more unstable the system, and the different kinds of cations have different strength to the stability of the kaolinite suspension. Under the same ionic strength, the strength of the cation to the stability of the suspension is Na + Mg ~ (2 +) Ca ~ (2 +).
【作者單位】： 中國(guó)礦業(yè)大學(xué)(北京)化學(xué)與環(huán)境工程學(xué)院;
【基金】：中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)基金資助項(xiàng)目(2015QH07)
【分類號(hào)】：X752

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本文編號(hào)：2455333