A kind of slime flotation agent and preparation method thereof
A coal slime flotation and selection technology, which is applied in flotation, solid separation and other directions, can solve the problems of complex preparation process, reduce the amount of collectors, high cost, etc., achieve good selection performance, enhance flotation efficiency, improve Environmentally friendly effects
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Embodiment 1
[0039] Preparation of Hydrophobically Modified Polyvinyl Alcohol A
[0040] Dissolve polyvinyl alcohol and hexanoyl chloride in an appropriate amount of dichloromethane according to the mass ratio of 1:6, add triethylamine with 1.1 times the molar amount of hexanoyl chloride, and react for 1-2 hours; the product is washed in turn to remove impurities to obtain hydrophobic modification polyvinyl alcohol.
[0041] Preparation of flotation agent A
[0042] Flotation Agent A is made of the following components:
[0043] Rapeseed Oil: 20 servings
[0044] Kerosene: 40 servings
[0045] Ethylene glycol: 15 parts
[0046] Dodecyldimethylamine: 5 parts
[0047] Dimethyl sulfate: 10 parts
[0048] Hydrophobically modified polyvinyl alcohol A: 5 parts
[0049] 33wt% NaOH: 2.5 parts
[0050] Sodium sulfosalicylate: 2.5 parts
[0051] Its preparation process is as follows:
[0052] (1) under the ice-water mixture temperature, the rapeseed oil, ethylene glycol, dodecyl dimethy...
Embodiment 2
[0055] Preparation of flotation agent B
[0056] Other conditions and operations are the same as in Example 1, except that the same mass of octanoyl chloride is used instead of hexanoyl chloride.
Embodiment 3
[0058] Preparation of flotation agent C
[0059] Other conditions and operations are the same as in Example 1, except that the same mass of decanoyl chloride is used instead of hexanoyl chloride.
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