铝土矿中主要的矿物是铝硅酸盐矿物，传统的铝土矿正浮选捕收剂是羧酸类，存在难溶解，用量大，选择性差等弊端，新型羟肟酸类捕收剂具有优良的选择性和捕收能力。本研究基于铝硅酸盐矿物晶体结构和表面性质的差异，应用药剂分子设计理论，通过量子化学计算，组装、设计了一系列的烷基羟肟酸，单矿物实验筛选出合适的烷基羟肟酸作为捕收剂，实现铝硅酸盐矿物的分离，在人工混合矿和实际矿石中进行相应的技术验证。通过运用动电位测试，吸附量测试，红外光谱测试和量子化学计算以揭示烷基羟肟酸与铝硅矿物的浮选作用机理。

Aluminosilicate minerals are the main ingredient in bauxite. The traditional bauxite positive flotation collectors are carboxylic acids and there are still some disadvantages: difficult to dissolve, requiring more amounts and poor selectivity etc, while new kinds of hydroximic acid collectors have advantages of fine selectivity and collectivity capacity. In this research, based on the differences of crystal structure and surface properties in aluminumsilicate minerals,applying the reagent molecular design theory, we intend to assemble and design a series of alkyl hydroximic acids and select the appropriate collectors to separate aluminumsilicate minerals by the single mineral experiments, and to achieve technical validation in artificial mixed and actual ores. This research aims to reveal the flotation mechanism between alkyl hydroximic acid and aluminosilicate minerals by applying test of electric potential, odsorption measurement,IR and quantum chemical calculation.