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4.2. A working hypothesis of the mechanism of increase of collective ability of reagent OPSK

Formed salts, basically, are in dissociated with - standing: By preparation zhiriokislotnogo collector OPSK to flotation fat - nuju acid add in a water solution of alkali. Thus occurs about - razovanie salts of fat acids under the scheme: The reagent prepared thus will move in the form of 10 % of th emul - these in a pulp.
Formed anion RCOO "gidrofobiziruet a mineral surface, being fixed on it polar group SOON\Hydrocarbon radical R, being apoljarnoj group, is guided in a water phase, obes - pechivaja water repellency of a surface. Anion fat acid can himiche - ski to co-operate with kationom a mineral, forming on its surface about replying almost insoluble soap. Besides, thanking difnlno - sti, salts of the higher fat acids can form foam to which film hydrophilic parts ferrimolibdita at the expense of what obespechi - vaetsja flotation adhere. At carrying out of experimental researches preparation emulsii OPSK was made both in glass, and in zinced on - court and in this connection one feature is revealed: the maintenance molib - dena oxidised in a concentrate zhirnokislotnoj flotations is considerable on - vyshalos at use emulsii, prepared in zinced on - Court. Therefore for hypothesis check about influence of zinc on technological indicators of flotation ferrimolibdita use mikrodobav - ki okisi zinc in the course of preparation of collector OPSK is tested. As show results of tab. 33, additional introductions okisi zinc promotes substantial increase of extraction oxidised mo - libdena (with 76,12 to 87,23 %) with simultaneous improvement of quality a game - tsentrata. In our opinion, it can be result of the following vzaimo - actions: Oksid zinc in alkaline environment forms tetragidroksotsinkaty [5, 9]: ZnO+2NaOIЫ120 - Na2 [Zn (OIl) 4] ( In the presence of salts karbonovyh acids probably interaction tetragidroksotsinkat-anionov with anionami karbonovyh acids on the exchange mechanism ligandov [52]: [Zn (OH) 4f +R-COO "-" [Zn (OHbRCOO] 2 ' + IT "() At such particles affinity to ions of metals above, than at anionov penalties - bonovyh acids, the poet) ' amplifies interaction of salts of fat acids with a surface ferrimolibdita at the expense of interaction on the mechanism:
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A source: Kostromina Irina Vladimirovna. Justification of a rational technology of processing of molybdenum ores refractory: On the example of ores from the Zhirekensky deposit / thesis / Chita. 2004

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