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对一种阴离子表面活化剂和不同淀粉衍生物组成的捕收剂与抑制剂体系的分离作用进行了充分的试验研究，这里用三种纯矿物一磁铁矿、磷灰石和角闪石作了铁矿石的提纯。吸附量测定和小型浮选试验揭示了烷基硫代琉璃酸钠是一种有效的和有选择性的磷灰石捕收剂。然而，在磷灰石必须完全地被浮起，而又不导致铁的不必要损失的情况下，使用铁抑制剂是不可避免的。捕收剂和抑制剂的竞争吸附的研究表明，捕收剂和抑制剂在磁铁矿和磷灰石上均发生吸附，但吸附量不同。测定表明，黄色糊精没有妨碍烷基硫代琥珀酸钠在磷灰石上的吸附，而抑制剂的预处理却明显地妨碍捕收剂吸附到磁铁矿上面。可以断定，如果抑制剂得到了预先处理，而捕收剂仅进行短时间的调制，那么抑制剂的效果可以得到改善。随着分子量的增加，抑制剂对磁铁矿的效果增加，顺序是：黄色糊精、白色糊精、淀粉。然而，抑制剂在磷灰石上的作用也同步增加。因此，黄色糊精比白色糊精更有选择性。
Adequate experimental studies have been conducted on the separation of collector and inhibitor systems consisting of an anionic surfactant and different starch derivatives using three pure minerals, magnetite, apatite and amphibole Iron ore purification. Adsorption measurements and small flotation tests revealed that sodium alkylthio-sodium sulfite is a potent and selective apatite collector. However, the use of iron inhibitors is inevitable given that the apatite must be completely lifted without causing unnecessary losses of iron. The study on the competitive adsorption of collectors and inhibitors shows that both collector and inhibitor adsorb on magnetite and apatite, but the adsorption amounts are different. The assay showed that yellow dextrin did not interfere with the adsorption of sodium alkyl sulfosuccinate on the apatite, whereas the pretreatment of the inhibitor significantly prevented the collector from adsorbing onto the magnetite. It can be concluded that the effect of the inhibitor can be improved if the inhibitor is pre-treated and the collector is only modulated for a short period of time. As the molecular weight increases, the effect of the inhibitor on magnetite increases, in the order: yellow dextrin, white dextrin, starch. However, the effect of inhibitors on apatite has also increased synchronously. Therefore, yellow dextrins are more selective than white dextrins.