Ferrosilicon balls are produced by pressing ferrosilicon powder in a machine that significantly improves the efficiency and economy of the steelmaking process by optimising the form and process.
Basic Properties
Composition
The core components of ferro silicon spheres are silicon and iron, with a silicon content of typically 45-75 per cent. In addition, other elements such as aluminium and calcium may be present.
Form
Ferro silicon pellets are usually 10-50mm diameter spheres, made by pressing or pelletising, and have a higher density than bulk ferro silicon powder.
Physical Properties
Ferro silicon spheres have a melting point of about 1200-1300°C and are suitable for high temperature steel environments.
Production process
Raw material treatment: The manufacture of ferro silicon balls requires crushing ferro silicon alloy into powder and mixing binder in proportion.
Forming: Next, the balls are pressed into shape by presses or disc granulators.
Curing: The pressed and shaped ferro silicon balls are to be cured, through natural drying or low temperature baking to enhance the strength and avoid crushing during transportation and use.
Ferro Silicon Balls vs Conventional Ferro Silicon Blocks
|
Indicator |
Ferrosilicon ball |
Ferrosilicon block |
|
Reaction speed |
Fast (large surface area, uniform melting) |
Slower (need to wait for block to melt) |
|
Utilisation rate |
≥95% |
70%-80 |
|
Environmental friendliness |
Low dust |
Prone to dust pollution |
|
Cost |
Slightly higher initial cost, low overall cost |
Low initial cost, high comprehensive loss |
