细尾砂土壤化用于西藏地区的可行性探究Study on the feasibility of using fine tailings soilization in Tibet摘 要:我国西藏地区土壤土层薄，土壤中有大量的砂，粗骨性强，发育历史年轻，而想要使土层变则则需极长时间的自然作用。我国矿产资源多导致产生的尾矿量巨大，粗尾砂可用于充填等，但细尾砂难以得到充分利用。经过土壤和尾砂矿物成分比较，发现尾砂主要矿物成分与土壤主要矿物成分相似，都为硅酸盐和铝酸盐类，而整个采选过程已消耗大量能量将矿岩人为破碎成颗粒极小的细砂，代替了自然作用。因此考虑将细粒级尾砂改良成土壤用于西藏地区。流程分为三步，首先通过旋流器分级，细砂经过预处理去除对植物有害的重金属离子，最后通过提高肥力，改良结构，将其变成可种植的土壤。关键词:细尾砂；分级；土壤化中图分类号：TP 028.8 文献标识码：AStudy on the feasibility of using fine tailings soilization in TibetAbstract:In Tibet,the soil layer is thin, and there are a lot of sand in the soil,which is tough and has a young history of development. The amount of tailings produced due to the abundance of minerals in China is huge. The coarse tailings can be used for filling, but the fine tailings cannot be fully utilized. Through the comparison of the mineral composition of soil and tailings,it is found that the main mineral composition of tailings is similar to that of soil, which are silicate and aluminate. Therefore,fine-grained tailing is considered to be modified into soil for use in Tibet. The process is divided into three steps: first, a cyclone is used to grade the fine sand, which is heavy metal ions harmful to the plants, and finally,through improved fertility and structure, it is transformed into plantable soil.Key words: fine backfilling; classification; soil transformation众所周知，西藏地区的土壤条件极具特点，土壤厚度仅有 30cm，成分中包含很多砾石，质地也较为疏松。土壤中有大量的砂，粗骨性强，土壤冻结期长，通气不良，土壤呈中性反应，发育历史年轻...
