Flotation method and pretreatment method for calcite-containing phosphorus ore
A technology for calcite and phosphate rock, applied in flotation, solid separation and other directions, can solve the problems of large amount of acid, poor sorting performance, harsh process conditions, etc., and achieve the effect of improving inhibition, efficient separation and simple method.
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Embodiment 1
[0018] Embodiment 1, a kind of flotation pretreatment method that contains calcite phosphate rock, this method is to add surface treatment agent and inhibitor to the phosphate rock slurry that contains calcite before flotation slurry adjustment; Described surface treatment agent For sulfuric acid or sulfurous acid or oxalic acid. Stirring was carried out while processing, and the stirring time was 30 minutes. The addition amount of surface treatment agent is 0.5kg / t raw ore. The inhibitor is a mixture of water glass, sodium fluoride and sodium lignosulfonate. The mass ratio of water glass, sodium fluoride and sodium lignosulfonate is 10:1:1.
Embodiment 2
[0019] Embodiment 2, a kind of flotation pretreatment method that contains calcite phosphate rock, this method is to add surface treatment agent and inhibitor to the phosphate rock slurry that contains calcite before flotation slurry adjustment; Described surface treatment agent For sulfuric acid or sulfurous acid or oxalic acid. Stirring was carried out while processing, and the stirring time was 120 minutes. The addition amount of surface treatment agent is 10kg / t raw ore. The inhibitor is a mixture of water glass, sodium fluoride and sodium lignosulfonate. The mass ratio of water glass, sodium fluoride and sodium lignosulfonate is 10:4:3.
Embodiment 3
[0020] Embodiment 3, a kind of flotation pretreatment method that contains calcite phosphate rock, this method is to add surface treatment agent and inhibitor to the phosphate rock slurry that contains calcite before flotation slurry adjustment; Described surface treatment agent It is a combination of sulfuric acid and sulfurous acid, each accounting for half. Stirring was carried out while processing, and the stirring time was 60 minutes. The addition amount of surface treatment agent is 2kg / t raw ore. The inhibitor is a mixture of water glass, sodium fluoride and sodium lignosulfonate. The mass ratio of water glass, sodium fluoride and sodium lignosulfonate is 10:2:3.
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