CAJ | 학술논문

从常用浮选捕收剂的捕收性能与其结构关系入手,分析捕收剂分子中极性基、非极性基结构对铁矿和胶磷矿捕收能力的影响,提出铁矿反浮选降磷捕收剂分子的设计构想,认为新型捕收剂分子中极性基部分应含有磺酸基,非极性基中应有不饱和键.通过高斯软件计算得到设计分子的净电荷分布、偶极距及前线轨道能量和组成,并与常用捕收剂进行比较,证明设计得到的捕收剂分子对胶磷矿的捕收能力.从机理分析得出:在特定的pH条件下,该反浮选捕收剂分子与胶磷矿表面的Ca2+发生螯合作用,形成稳定六元环,从而实现与铁矿的分离.
종상용부선포수제적포수성능여기결구관계입수,분석포수제분자중겁성기、비겁성기결구대철광화효린광포수능력적영향,제출철광반부선강린포수제분자적설계구상,인위신형포수제분자중겁성기부분응함유광산기,비겁성기중응유불포화건.통과고사연건계산득도설계분자적정전하분포、우겁거급전선궤도능량화조성,병여상용포수제진행비교,증명설계득도적포수제분자대효린광적포수능력.종궤리분석득출:재특정적pH조건하,해반부선포수제분자여효린광표면적Ca2+발생오합작용,형성은정륙원배,종이실현여철광적분리.
@@@@The influences of polar and non-polar groups of collectors on dephosphorization from iron ore were investigated by analyzing the collecting ability and structural relationship of common flotation collectors, and a conceptual design of collector molecular was provided further. The new-type collector molecular contains sulfonic acid ground and non-polar group does not contain unsaturated bond. With the Gaussian computation, the net charge distribution, dipole moment and orbital energy and compositions of the frontier orbital are obtained. The collecting ability of the collector on mineral was proved and molecular structure was optimized by comparing it with the common collector like oleic acid from the perspective of related quantum chemistry parameters derived by Gaussian software. The mechanism analysis resuts show that chelation will happen between the collector and Ca2+on the surface of collophane under the given pH condition to form a stable six-member circle and separate the dephosphorization from iron ore.