Method for preparing colored sand, roadbed stones and cement active admixture from molybdenum ore tailings: Fid-Bau Portal

Method for preparing colored sand, roadbed stones and cement active admixture from molybdenum ore tailings

JIAN FANGFANG / LIU E

The invention relates to a method for preparing colored sand, roadbed stones and cement active admixture from molybdenum ore tailings, which comprises the following specific steps of: blending molybdenum ore tailings into ore pulp by using water, conveying the ore pulp from a tailings pond to a production workshop by using a pipeline, and performing multi-stage screening on the ore pulp to obtain ore pulp A, ore pulp B, ore pulp C, ore pulp D and ore pulp E; filtering the ore pulp A, the ore pulp B and the ore pulp C, producing color sand from filter cakes, and recycling filtrate; filtering the ore pulp D, and conveying filter cakes to a roadbed stone production line to produce roadbed stones; carrying out solid-liquid separation on the ore pulp E, feeding filter cakes to an activation furnace for activation to produce a cement active admixture, and treating filtrate for recycling; and adding ordinary Portland cement, a reinforcing agent, glass fibers and a cement active admixture into the filtered solid filter cakes, and uniformly mixing to produce roadbed stones and roadbed bricks. The method is low in equipment investment, simple in process, low in cost, high in additional value, free of secondary pollution, remarkable in recycling effect and easy in treatment on a large scale, and has good environmental benefits and economic benefits.

钼矿尾矿制彩砂、路基石和水泥活性掺合料的方法，具体步骤如下：将钼矿尾矿用水调制成矿浆，从尾矿库用管道输送到生产车间，矿浆进行多级筛分为甲矿浆、乙矿浆、丙矿浆、丁矿浆、戊矿浆；将甲矿浆、乙矿浆和丙矿浆过滤，滤饼生产彩砂，滤液循环使用；将丁矿浆过滤，滤饼输送至路基石生产线生产路基石；将戊矿浆固液分离，滤饼送至活化炉进行活化，生产水泥活性掺合料，滤液处理后循环使用；将过滤后的固体滤饼加普通硅酸盐水泥、增强剂、玻璃纤维和水泥活性掺合料混合均匀，生产路基石和路基砖中。该方法设备投资小、工艺简单、成本低、附加值高、无二次污染、资源化效果显著、易于大规模处置，有较好的环境效益和经济效益。

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