Steel mill dust binder is a chemical product used to treat the dust generated during steel production. It is primarily employed to agglomerate the dust into pellets for recycling in steel and iron smelting, enabling resource circularity. This binder is characterized by its environmental friendliness, low cost, small dosage, and fast drying speed. Below is detailed information:
1. Composition
- Mainly includes high molecular polymers, inorganic binders, and various additives. High molecular polymers provide adhesion and stability, inorganic binders offer cohesiveness, and additives adjust properties as needed, such as hardness and weather resistance.
2. Functions
- Improve pelletization rate: Effectively agglomerates dust into various shapes for easy transportation and handling.
- Enhance pellet strength: Possesses bonding strength to form stable blocks from dust of various shapes, reducing transportation costs.
- Improve corrosion and weather resistance: Maintains adhesion even under harsh environmental conditions.
- Environmental performance: Does not generate pollution during use, complying with national environmental standards.
3. Applicability
- Suitable for iron-containing waste materials such as dust containing calcium oxide, sludge, iron scale, and sintered return ore.
4. Usage Method
- Mix dust with a reducing agent (coal powder) and binder for pelletization. The formed green pellets, with certain strength, are dried in a dryer to reduce moisture content to below 3%. The dried green pellets are then evenly distributed in a rotary hearth furnace using a vibrating feeder, with the furnace temperature controlled between 1100-1300°C, where direct reduction reactions occur within the pellets.
Hebei Baofei New Material Co., Ltd. is a practical enterprise. The company has always focused on the binder industry, mainly producing various pellet binders widely used in metal pellets, metallurgical pellets, clean briquette coal, and other fields.