This epoxy coating impregnation technology refers to coating epoxy powder of the stators for impregnation after hot-melting of the copper welding terminals of copper coils, before curing with high heat. It boasts the advantage of automatic powder dust cleanup and higher production accuracy.
Automatic stator coating with epoxy material at welding ends of the stators, before solidified to form a protective layer, including the material fluidization, cycling and recovery, as well as the product preheating and curing. With data traceability system, product quality is controllable. The cycle time, automation and production accuracy can be customized.
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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.
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