WFA Micropowder For Abrasive

WFA corundum micropowder for abrasive is made of high-quality alumina powder as raw material,which of the production process is semicolon precipitation,vertical ball mill,acid washing tank,overflow tank,hydraulic classification,pressure controller.

Characteristics:

1. Its slightly higher hardness,Slight lower toughness,

2. Good self-sharpening,

3. Strong grinding ability,

4. Low calorific value,

5. High efficiency,acid and alkali corrosion resistance

   
   

Widely used in grinding and polishing of semiconductors, crystals, circuit boards, aluminum, steel, stainless steel, stone, glass, etc., as well as coatings and fillers.It is selected from the high-quality white aluminium fine powder in the white aluminium section sand production line, which is further crushed and shaped by tube grinding, and magnetically separated to remove iron, pickling and moisture.

Particle Size Specifications and Composition

Standard: 240#, 280#, 320#, 360#, 400#, 500#, 600#, 700#, 800#, 1000#, 1200#, 1500#, 2000#, 2500#, 3000#, 3500# , 4000#, 6000#, 8000#

European standard: F240, F280, F320, F360, F400, F500, F600, F800, F1000, F1200, F1500

GB: W63, W50, W40, W28, W20, W14, W10, W7, W5, W3.5

Points to pay attention to in white alumina: 

①　Alumina content: The alumina content directly determines the properties of white alumina and the cost of the factory

②　Sodium content: Sodium oxide will produce sodium peraluminate in the smelting of white alumina, which affects the quality of the product

③　Bulk density: Bulk density can reflect particle density, particle shape, particle size composition to a certain extent

④　Whiteness: an indicator reflecting the appearance and color of white corundum

⑤　Particle size distribution: too coarse or too fine particles will have different effects

⑥　Particle shape: Different applications will use either sharp or rounded or flat particle shapes

With the rapid development of the market of high-end abrasives, electronic ceramics and high-end refractory materials, reducing the sodium content in white aluminium has become an important research direction to improve the quality of WFA corundum micropowder.

There are many methods for removing sodium from white alumina, such as removing sodium from raw materials, directly purchasing low-sodium industrial alumina raw materials, or removing sodium from high-sodium alumina raw materials, but these methods will increase the cost, so it is difficult to use AL2O3 production enterprises use it in batches.

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