In order to make potassium salt flotation technology workers better understand the research and development status and development trend of potassium salt flotation reagents, Gan Shunpeng introduced various collectors, conditioners and foaming agents commonly used in potassium salt flotation at home and abroad. The research and application status of collectors such as octadecyl primary amine and sodium dodecyl sulfonate in potassium salt flotation are mainly introduced. Studies made focusing on potassium coarse foreign flotation reagent, such as rosin and C8 ~ C18 fatty acid methyl ester mixture, hydroabietyl alcohol - kerosene solution of a mixture with fatty amines, fatty amines and polyoxypropylene alcohols drug combination so It can be used for flotation of coarse-grained potassium salts. It is pointed out that the structure of the alkyl carbon chain of the collector molecule is diversified, multi-functionalized, and the combination of several kinds of agents is the direction of research and development of potassium salt flotation reagents in the future, emphasizing the study of coarse-grained potassium salt flotation reagents for future potassium salts. The development of flotation industry is of great significance.
Tang Jianliang et al. used a self-developed new potassium salt collector CB-805, which was a combination of various amine collectors, to carry out potassium extraction test on the site tailings, and finally obtained a potassium grade of 12.81%, potassium recovery. was 85.05% of the flotation concentrate, the concentrate was purified and transformed dehydrated and dried to obtain a high-quality potassium magnesium fertilizer products.
Gan Shunpeng and other use of CB-601 (an alkyl sulfonate) from K +, Mg 2 +, Na +, SO42-, Cl - mass fraction of 8.03%, 0.018%, 29.51%, 14.13%, 33.87% potassium The flotation concentrate is obtained by the flotation of potassium mirabilite in the mixed salt ore. The mass fraction of potassium mirabilite is 85. 01%, and the recovery rate of K + recovery is 80.13%.
Ji Rong et al. used octadecylamine as the main collector and C16 unsaturated aliphatic hydrocarbon as the auxiliary collector, and added the drug to the high-quality fractional slurry. The particle size of the 2 coarse and 2 fine processes was 2.35 to 0 mm. A KCl concentrate with a KCl grade of 38.85% of a coarse-grained potassium salt obtained a KCl grade of 96.10% and a KCl recovery of 90.98%.
Dihexyl alcohol and ethylene glycol ester foaming agent have strong dispersing effect on the cationic collector in the salt solution, which can greatly improve the mineralization of alkylamine and alkylmorpholine in the treatment of potassium ore and carnallite ore. The amount of adsorption and flotation activity reduce the amount of collector and improve the floatability of coarse ore particles. The КС-МФ inhibitor synthesized from urea and formaldehyde is a potent and inexpensive inhibitor of potassium ore flotation to inhibit slime. The combined application of new high-efficiency auxiliary agents (inhibitors and foaming agents) can create conditions for improving the process structure of the potassium flotation plant, while also reducing potassium salt loss and improving the on-site ecological environment.
Many non-metallic mineral flotation are used in a length of hydrocarbon surfactant C14 ~ C18 (e.g., fatty acids and fatty amine collectors), under the conditions of organic foaming agents and inhibitors performed. However, there is currently no information available on the interactive effects of the properties of foaming agents and organic inhibitors on ore flotation indicators. S. Kitkov et al. used the flotation process of some potash ores as an example to study the effect of foaming agent on the adsorption of cationic collector fatty amine on potassium salt and clay carbonate gangue minerals. And the effect on the action of organic inhibitors. It has been found that, in order to reduce the adverse effects of clay carbonate gangue minerals on the floatability of minerals, the change in the colloidal properties of the collector after the addition of the foaming agent has a great effect on the action of the organic inhibitor. influences. The results show that when foaming agents and inhibitors are selected, they can be used together to obtain the best flotation index. The results of laboratory tests have been verified by semi-industrial tests, and semi-industrial test processes and pharmaceutical systems for flotation of potash ore have been developed.
E. И. Aleksieva et al. studied the effect of the degree of hydroxyethylation of collector amines on the efficiency and selectivity of potassium ore flotation. Laboratory and industrial test results show that the use of hydroxyethylamine can improve the recovery of insoluble impurities in slime products, improve the selectivity of flotation and flotation rate. Using hydroxyethylamine as a collector, a new and efficient process for removing slime from potassium ore can be developed for the ВКПРУ-2 flotation plant. The process eliminates the return of the flotation foam product in the deliming circuit, reduces the mass fraction of the insoluble impurities in the flotation of the potassium salt, and increases the potassium salt flotation index.
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