吉林露水河硅藻土质量评价

EVALUATION ON THE QUALITY OF DIATOMITE IN LUSHUIHE DISTRICT, JILIN PROVINCE, CHINA

露水河硅藻土矿是第四纪形成的沉积矿床 ,具有直链硅藻土和圆环硅藻土两种类型矿层。硅藻土矿的物质组成以硅藻为主 ,可含少量粘土矿物。SiO2 主要由硅藻贡献。Al2 O3 主要由粘土矿物贡献 ,Fe主要以Fe2 O3 形式被吸附在粘土矿物颗粒表面和粒间。直链硅藻土矿层厚度稳定 ,主要是Ⅱ级土 ,含Fe较高 ;圆环硅藻土矿层厚度有变化 ,大多为Ⅰ级土 ,含Fe低 ,但局部见硅藻严重破碎现象。利用SiO2 密度相关图解 ,可适时监测硅藻土品质。

Diatomite in Lushuihe is a Quaternary sediment deposit with two types of the straight chain diatom and disc diatom. The diatomite mainly consists of diatom and a few clay minerals. SiO 2 and Al 2O 3 is contributed from the diatom and clay minerals respectively. Fe is in Fe 2O 3 form chiefly adsorbed on the grain surface and among the grain of clay minerals. The straight chain diatomite layer is mainly grade Ⅱ with the higher Fe content and thickness steadily. The disc diatomite layer is mostly grade Ⅰ with lower Fe content and variable thickness, but the diatom is broken badly in local zone. The utilization of a density SiO 2 illustration is significant for superintend the quality of diatomite momentarily.