This index was prior to that of reverse flotation in Lunan Mining Company.Through the measurement on pure mineral by the Zeta-potential, points of zero charge of quartz and pure iron ore were found.

• 通过对纯矿物的Zeta-电位测定，确定了石英和纯铁矿的零电点，并对比了SR与铁矿作用前后Zeta-电位的变化和钙离子对石英Zeta-电位的影响，其结果说明：在中性和碱性条件下，SR对铁矿Zeta-电位影响较小或两者变化趋势一致；