某金矿压滤尾砂膏体充填综合性能试验

某金矿使用+37 μm的粗尾砂进行高浓度胶结充填，并已成熟运用粗尾砂胶结充填技术。为最大限度使用尾砂，减少-37 μm的细尾砂堆存到尾矿库中，降低整个矿山开采成本和消除安全隐患，该金矿对压滤（全）尾砂膏体充填综合性能进行了试验研究。试验结果表明：压滤（全）尾砂膏体充填综合指标高于分级尾砂高浓度充填，质量浓度76%的料浆坍落度、扩展度、屈服应力、黏度和泌水率等综合指标最优，满足采矿方法的要求，并根据矿山生产实际，提出了压滤（全）尾砂膏体充填工艺方案。

Comprehensive Performance Test of the Pressure-filtrated Tailings Paste Filling in a Gold Mine

The high concentration cemented filling with coarse tailings of +37 micron has been maturely applied in a gold mine. In order to maximize the use of tailings， reduce the fine tailings at -37 micron stored in tailings reservoir， lower the mining cost of the whole mine and eliminate potential safety hazards， the comprehensive performance of the full tailings filling paste was tested in this gold mine. The test results showed that the comprehensive index of full tailings paste filling is higher than that of high-concentration classified tailings filling. The slurry slump， expansion， yield stress， viscosity and bleeding rate of the paste with 76% mass concentration are the best， which can meet the requirements of mining methods. According to the actual production of the mine， the pressure-filtrated full tailings paste filling technology scheme is put forward.