氯化钾生产尾矿胶凝回填科学数据集

地下含钾盐矿为光卤石矿，矿物自身的特点，光卤石矿加工尾矿除固体氯化钠外，还会产生大量氯化镁尾液，露天堆存或直接排放将导致严重的环境污染。提出以岩盐矿KCl生产老卤为原料，低成本制备高性能胶凝膏体作为地下采空区回填材料，尾矿胶凝剂添加量5%，可形成稳定的膏体胶凝材料，膏体几乎不泌水，膏体胶凝时间大于4小时，满足提钾老卤零排放绿色充填工艺需求，协同解决岩盐矿KCl生产的尾矿处理难题与矿山安全问题。Underground potassium-bearing salt deposits are carnallite ores. Due to the inherent properties of carnallite ore, the tailings generated during carnallite ore processing contain not only solid sodium chloride but also large volumes of magnesium chloride-bearing tailing liquor. Open-air stockpiling or direct discharge of these tailings will cause severe environmental pollution. This work proposes a low-cost method to prepare high-performance cemented paste for underground goaf backfilling, using the spent bittern from potassium chloride (KCl) production in rock salt mines as the raw material. With a 5% dosage of tailing-targeted cementitious admixture, a stable cemented paste material can be formed. The paste exhibits negligible bleeding, and its setting time exceeds 4 hours, which meets the requirements of the zero-discharge green filling process for the spent bittern from KCl production, and simultaneously addresses both the tailings disposal challenges and mine safety issues associated with KCl production in rock salt mines.

搜集汇总

背景与挑战

背景概述

该数据集聚焦于利用岩盐矿KCl生产老卤制备高性能胶凝膏体，作为地下采空区回填材料，以解决尾矿处理和环境污染问题。通过添加5%的尾矿胶凝剂，形成稳定的膏体材料，满足绿色充填工艺需求，协同应对矿山安全挑战。