为提高凹凸棒石粘土矿开采利用价值,对某一凹凸棒石粘土矿的不同粘土矿层进行表征和应用研究。研究发现该矿属于蒙脱土-凹凸棒土型粘土矿,其上部与下部两层均含有白云石,凹凸棒石含量仅为34.64%和34.27%,而中部凹凸棒石含量高达79.09%。其作为造纸填料,中层矿物留着率达90%,对纸张白度影响较大;上下层矿物留着率达60%,对纸张的白度影响较小。凹凸棒土对纸张的抗张强度和撕裂强度都具有较大影响。 In order to improve the exploitation value of attapulgite clay mine, the different clay mineralization of a attapulgite clay mine was characterized and applied. The study found that the mine belongs to the montmorillonite - attapulgite clay ore, the upper and lower two layers contain dolomite, attapulgite content of only 34.64% and 34.27%, while the central attapulgite content of up to 79.09%. As papermaking filler, the retention rate of middle mineral reached 90%, which had a great effect on the whiteness of paper. The upper and lower mineral retention rate reached 60%, which had little effect on the whiteness of paper. Attapulgite on the paper tensile strength and tear strength have a greater impact.