Fused ceramic sand

Product Details

Foundry sand: fused ceramic sand

Raw material : cooked bauxite/calcined bauxite

Chemical composition

Performance

Products in stock %

♦ For products inquiry, you can choose single mesh , or customized mesh distribution

Production workflow

• Crushing

The sizes of the cooked bauxite ore is different, it needs to be broken evenly for convenient feeding by conveyor to melt under the high temperature environment generated by the arc.

• Electro smelting+ high pressure air blowing

The cooked bauxite is melted into liquid at the high temperature of the arc generated by the graphite electrode. Use a certain pressure of compressed gas to blow the liquid in the falling process into fine particles. Under the action of surface tension, the fine particles cool rapidly during the scattering process, forming spherical or nearly spherical sand particles with a smooth surface.

• Cooling in rotating drum

  The inside of the drum adopts a spiral structure to cool and separate the wrapped sand and wool during the cooling process.

• Screening in linear moves sieve

  To separate sand and wool, while filtering out other impurities.

• Screening in swing sieve

  To separate sands of different sizes and store them in corresponding storage bins.

• Blending /mixing

  To mix the sands of different sizes to meet average AFS according to customer’s specification.

Features:

1. The coefficient of thermal expansion is small, and the performance can be comparable to zircon sand.

2. Good fluidity, easy to pound, and good air permeability.

3. The surface is smooth and compact, and the amount of binder added for molding can be reduced by 30%-50%

4. Low acid consumption value, both acid and alkali binders can be used

5. High strength, no broken, less dust, good reproducibility, high cost performance

6. Low loss on ignition rate

7. The low amount of binder required not only save costs but also reduce the tendency of casting pore defects