Sylvite Flotations Activation from Carnalite Containing Potash Ores
Russia is one of the largest manufacturers of potash fertilizers in the world. Processing of potash ores basically is carried out by a flotation way. Potash ores of the Verhnekamsky potash deposit contain sylvite (KCI), halite (NaCl) and water insoluble impurity (up to 8 %), presented silicatecarbonate minerals, easily slimed by ore crushing in rod mills.Ore of some deposit sites, developed by Uralkali Co, contains a significant amount of a carnallite (KCl·MgCl2·6H2O). Work practice of flotation potash plants has shown, that increase of carnallite content in ore leads to increase magnesium ion content in a circulated plant brine (saturated salt solution of potassium and sodium chlorides-sylvite brine) and to deterioration of indicators of ore processing.In the Paper we present results of researches of floatability of various size sylvite and influences silicate-carbonate slimes on sylvite flotation in brines with the various magnesium chloride content.It is established, that with increase magnesium chloride content in the brine mainly decreases the flotation of coarse sylvite and amplifies adverse effect of silicate-carbonate slimes on sylvite flotation. In this connection deterioration of potash ore flotation is caused not only decrease sylvite floatability but also strengthening adverse action of water insoluble impurity on potash flotation.It is shown that the application of frothing agents, which render the stronger dispersive action on the colloidal-micellar structures of amine in the salt solution increases the absorption of collector on the sylvite and improves the flotation of sylvite into magnesium the containing salt solutions. The application of an organic depressor to the greatest degree of decreasing the absorption amine on the slimes and to the smallest degree possessing anionic properties proves to be most effective with the flotation carnallite of the containing potassium ores. It is offered the application the frother on a basis of glycol ethers and organic depressor on a basis of urea-formaldehyde resin.Results of industrial tests developed reagent modes for flotation treatment of ores with the raised camallite content (to 6 %) on Uralkali Co plant have shown that their application has allowed to receive equivalent indicators potash flotations at change of magnesium chloride content in the brine from 0.7 % up to 2.4 %.
Flotation Sylvite Magnesium Frother Binder
E.V. Konoplev S.N. Titkov T.M. Gurkova T.G. Chumakova
Uralkali Co., Beresniki, Russia Halurgy Institute, Saint-Petersburg, Russia
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
933-939
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）