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现代矿业 ›› 2024, Vol. 40 ›› Issue (03): 148-151.
云南某铝土矿为了解决洗矿尾矿沉降困难及浓密机溢流碱性高的问题，进行了在洗矿 尾矿中添加无机助凝剂、有机絮凝剂及2类药剂混合使用的沉降试验，并对沉降上清液的浊度进行了 检测。试验结果表明：在自然pH值为7.3的条件下，0.024 g/L的APAM（1 200万分子量）与0.4 g/L的 聚合氯化铝混合使用，可有效促进洗矿尾矿的沉降，10 min时的沉降压缩率达 69.2%，上清液浊度仅 43 NTU。同时，聚合氯化铝+1 200万分子量 APAM 混合药剂作用下的矿石红外光谱测定结果表明， 聚合氯化铝与APAM在矿物颗粒表面的吸附作用为物理性吸附。
In order to solve the problem of difficult sedimentation of ore washing tailings and high over⁃ flow alkalinity of thickener in a bauxite mine of Yunnan，the sedimentation test of adding inorganic coagu⁃ lant aid，organic flocculant and mixed use of two kinds of agents to the ore washing tailings was carried out， and the turbidity of the sedimentation supernatant was detected.The test results show that under the condi⁃ tion of natural pH value of 7.3，the mixed use of 0.024 g/L APAM（12 million molecular weight）and 0.4 g/L polyaluminum chloride can effectively promote the settlement of washing tailings. The settlement compres⁃ sion rate reached 69.2% at 10 min，and the supernatant turbidity was only 43 NTU.At the same time，the re⁃ sults of infrared spectroscopy of the ore under the action of polyaluminum chloride + 12 million molecular weight APAM mixed reagent show that the adsorption of polyaluminum chloride and APAM on the surface of mineral particles was physical adsorption.
摘要： 云南某铝土矿为了解决洗矿尾矿沉降困难及浓密机溢流碱性高的问题，进行了在洗矿 尾矿中添加无机助凝剂、有机絮凝剂及2类药剂混合使用的沉降试验，并对沉降上清液的浊度进行了 检测。试验结果表明：在自然pH值为7.3的条件下，0.024 g/L的APAM（1 200万分子量）与0.4 g/L的 聚合氯化铝混合使用，可有效促进洗矿尾矿的沉降，10 min时的沉降压缩率达 69.2%，上清液浊度仅 43 NTU。同时，聚合氯化铝+1 200万分子量 APAM 混合药剂作用下的矿石红外光谱测定结果表明， 聚合氯化铝与APAM在矿物颗粒表面的吸附作用为物理性吸附。
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