Premelting calcium aluminate refining slag for steel plant
Model Number: Hongtai
Certification: ISO9001
Minimum Order Quantity: 5 ton
Calcined/premelting Calcium aluminate refining slag performance
1. It has high-efficiency deoxidation and desulfurization functions, which can reduce the sulfide and oxides in molten steel to the minimum level. It has strong desulfurization and deoxidation capabilities, does not produce sulfidation, and stabilizes the structure of steel products, thereby improving the quality of steel products.
2. It has trinity functions: desulfurization, deoxygenation and submerged arc.
3. It has extremely strong heat preservation function, which can shorten the refining time and improve the efficiency after submerged arc.
4. Direct use, no residual impurities, reduce labor intensity and improve efficiency.
5. Reduce power consumption during refining
Technical characteristics of Calcined/premelting Calcium aluminate refining slag
1. The melting temperature is obviously lower than that of mechanical mixed slag, and it has the characteristics of low melting point, high melting speed and good foaming performance.
2. The liquid slag can be quickly formed by absorbing very little energy. It has good spreadability and covers the surface of the molten steel to isolate the molten steel from the air, reducing the absorption of H2-O2-N2 by molten steel.
3. It is allowed to use lime to accurately adjust the slag according to the site conditions of each plant to form alkaline highly liquid lime saturated slag. 4. The desulfurization effect is better than that of mechanical mixed slag. The desulfurization rate is greater than that of mechanical mixed slag. At the same time, the final sulfur in steel is also lower than that of mechanical mixed slag, which achieves the purpose of deep desulfurization. 5. Avoid using fluorite (it is harmful to the environment and refractory materials)
How to use Calcined/premelting Calcium aluminate refining slag
Instructions:
The amount of addition can be determined according to the on-site process conditions. Sanshi Metallurgical recommends 5-12kg/ton, or it can be added in two parts. The tapping is added and the refining furnace is added. By stirring argon at the bottom of the ladle, the steel gas and impurities are fully floated up, and the temperature and chemical composition of the molten steel are uniform, improving the purity of the molten steel and obviously improving the quality of the steel.
Technology
| Type | Chemical Index | size | ||||||
| CaO% | Al2O3% | SiO2% | TiO2% | Fe2O3% | MgO% | CaF2% |
5-40mm 5-50mm |
|
| A | 48-52 | 38-42 | 3-5 | 2 | 1.5 | 1.5 | ||
| B | 49-54 | 36-41 | 3-5 | 2 | 1.5 | 1.5 | ||
| C | 45-55 | 31-38 | 8 | 2 | 1.5 | 4-8 | ||
| D | 45 | 22 | 8 | 1.5 | 1.5 | 1.5 | 10 | |
Comparison of premelted Calcined/premelting Calcium aluminate refining slag and sintering Calcined/premelting Calcium aluminate refining slag
sintering Calcined/premelting Calcium aluminate refining slag
The composition of sintered Calcined/premelting Calcium aluminate refining slag is more uniform and stable, and the melting speed is faster, but the cost is relatively increased, and due to the small density of the slag and the large number of pores, it is easy to cause suction in the refining process.
premelted Calcined/premelting Calcium aluminate refining slag
Pre-melting Calcined/premelting Calcium aluminate refining slag refers to the Calcined/premelting Calcium aluminate refining slag used to make steel after melting raw materials in a special ratio, using high temperature to melt the raw materials into a liquid state at a temperature higher than the melting point of the slag system, and then cooling and crushing. Premelted Calcined/premelting Calcium aluminate refining slag has high purity, uniform chemical composition, stable phase, low melting point, and fast slag forming speed, which can greatly shorten the refining time and can be directly used in the slag washing process of the converter ladle tapping process to improve the cleanliness of molten steel . And it does not contain fluorine or a small amount of fluorine, which reduces lining erosion and effectively reduces the pollution of fluorine to the environment. Due to the compact structure of the premelted Calcined/premelting Calcium aluminate refining slag, it does not absorb water, which is convenient for storage, transportation and storage, and is not powdered or volatile. It can significantly reduce dust pollution in steel plants, but the production cost is higher.
Production capacity: Our factory actively response to government environmental protection policy, we designed and built the fully automatic controlled high temperature gas tunnel kiln (1700℃), and got capacity of annual output 70,000 tons of high quality refractory products.
Packing details:
★Bricks: Fumigated wooden pallet with log paperboard covered and stainless steel band strapping, the whole outside is wrapped with thermoplastic film. Or carton packaging.
★Wooden pallet size: usually 92*92cm (standard brick)
★Castable: Ton bag with rain film and 25kg bags inside
★Or according to customer’s requirements
Transportation
★Port of dispatch: Tianjin port; Qingdao port
★Delivery time: According to customer’s demand or two sides negotiate
We provide you
★Timely response: Timely response to your inquiry within 24 hours and provide solution.
★Competitive Price: Make the products competitive in your market.
★Free sample: Free sample are offered, trial order are accepted for quality evaluation.
★Strict quality control: We set Quality Management System, from the raw material to finished products, produce high quality products according to chemical & physical specifications strictly to satisfy customers’ needs.
★Fast delivery time: Within 3-30 days according to your quantity after receiving your advance payment.
★ Professional services: Provide pictures from order to delivery. Inspect report by our country’s designated authority and oversea services if necessary.
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Certification: (ISO 9001:2015)
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