Flotation agent for high aluminum minerals (kyanite, andalusite, sillimanite)

The flotation reagents of kyanite minerals are shown in Table 1. It can be seen from the table that the flotation collectors of these three minerals are universal and can be classified into three categories: (1) carboxylic acid collectors such as oleic acid (sodium), oxidized paraffin soap, rouge, tal Oil or the like; (2) a hydroxysulfonate and a hydroxysulfate such as sodium petroleum sulfonate; and (3) an alkylamine.
Table 1 Flotation agents of kyanite minerals
mineral
Collector
pH value
Conditioner
Kyanite
Sodium oleate
Rouge
Sodium sulfate
Dodecylamine
2.2 to 4.0
9.5
5.5 to 7.0
3~12
HF, H 2 SO 4
Water glass, citric acid
Sillimanite
Sodium alkane sulfonate + oxidized paraffin soap (1:2)
Oleic acid
Sodium dodecyl sulphate
Dodecyl acetate
8~9
8~9
5.4
9.0 to 9.5
Na 2 CO 3
Carboxylic acid, hexametaphosphate, sodium phosphate, sodium silicate, the CMC
Andalusite
Sodium sulfate
Dodecylamine
3 to 10
3 to 9

Commonly used in production are the first two types of collectors. When using carboxylic acid collectors, the pH of the pulp is often alkaline. It is customary in China to use alkali flotation; when using sulfonate as a collector, the pH of the slurry The value should be adjusted to acidity, also known as acid flotation.

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