Hydroximic acid-sulfonic acid multi-ligand metal complex collecting agent, and preparation method and application thereof
A metal complex and hydroxamic acid technology, applied in solid separation, flotation, etc., can solve the problems of large amount of inhibitors, difficulty in separating titanium-containing minerals from gangue minerals, and low recovery rate, so as to improve the grade of concentrate and the recovery rate of flotation operations, which are beneficial to large-scale production and application, and reduce the cost of beneficiation
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Embodiment 1
[0051] Weigh 0.001mol of benzohydroxamic acid and put it into a 500mL flask, add 300mL of methanol as a solvent, add 0.0002mol of ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 9.5, and stir the reaction at room temperature for 25min. Obtain hydroxamate; Hydroxamate and n-octadecyl sodium sulfonate are added in the flask according to the molar mass ratio of 1:1, add glycerin to make its mass concentration be 40%, then be placed in the constant temperature water bath, use magnetic Stirring and heating to 85°C and reacting for 25 minutes, the obtained liquid was recrystallized three times after rotary evaporation to obtain a solid; the obtained solid was added to the flask, and the mixed liquid of water and methanol was prepared according to the volume ratio of water and methanol at 7:1 and added In the flask, the mass percent concentration of the solid in the mixed solution of water and methanol is 35%, to obtain hydroxamic acid-alk...
Embodiment 2
[0056] Weigh 0.002mol of propyl hydroxamic acid and put it into a 500mL flask, add 300mL of methanol as a solvent, add 0.0004mol of ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 8.0, stir and react at room temperature for 30min, Obtain hydroxamate; Hydroxamate and sodium dodecylsulfonate add in the flask according to the molar mass ratio of 1.5:1, add glycerin and make its mass concentration be 38%, then be placed in the constant temperature water bath, use magnetic Stir and heat to 80°C and react for 30 minutes. The obtained liquid is recrystallized three times after rotary evaporation to obtain a solid; add the obtained solid to the flask, and prepare a mixed liquid of water and methanol according to the volume ratio of water and methanol at 8:1. Add it into a flask so that the mass percentage concentration of the solid in the mixed solution of water and methanol is 45%, to obtain hydroxamic acid-alkylsulfonic acid multiligand c...
Embodiment 3
[0062] Weigh 0.001mol of benzohydroxamic acid and put it into a 500mL flask, add 300mL of methanol as a solvent, add 0.0002mol of ethyl acetate after complete dissolution, then add sodium hydroxide to adjust the pH value to 9.0, and stir and react at room temperature for 30min. Obtain hydroxamate; hydroxamate and sodium dodecylbenzenesulfonate are added in the flask according to the molar mass ratio of 1:1, add glycerin to make its mass concentration be 35%, then be placed in the constant temperature water bath, use Stir with a magnet and heat to 90°C and react for 30 minutes. The obtained liquid is recrystallized three times after rotary evaporation to obtain a solid; add the obtained solid to the flask, and prepare a mixed liquid of water and methanol according to the volume ratio of water and methanol at 6:1. The mixture is added into a flask so that the mass percent concentration of the solid in the mixed solution of water and methanol is 40%, and the hydroxamic acid-alkyls...
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