Refining slag refers to the technology used after mixing raw materials in a certain proportion and particle size, heating them below the melting point of the raw materials, sintering the raw materials together, and then crushing them into particle sizes. The main components are CaO-CaF2 base, CaO-Al2O3 base, and CaO-Al2O3-SiO2 base. The form of refining slag mainly includes sintered type, pre-melted type and mixed type.
Pre-melted refining slag refers to the refining slag used for steelmaking after mixing the raw materials in a certain proportion, using high temperature in a special equipment 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. The pre-melted refining slag has high purity, uniform chemical composition, stable phase, low melting point and fast slag formation speed, which can greatly shorten the refining time and can be directly used for slag washing in 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 the corrosion of the furnace lining and effectively reduces the pollution of fluorine to the environment. Due to the compact structure of the pre-melted refining slag, it does not absorb water, is convenient for storage, transportation and storage, does not pulverize, and is not volatile, which can significantly reduce dust pollution in steel plants
CaO |
A2LO3 |
SiO2 |
Fe2O3 |
MgO |
S |
P |
TiO2 |
47-52 |
38-42 |
≤2.5 |
≤1.0 |
1.0 |
0.1 |
0.05 |
≤1 |
45-50 |
37-45 |
5-2 |
≤1.5 |
3-5 |
0.1 |
0.05 |
≤1 |
47-55 |
50-55 |
6-8 |
≤1.5 |
1.0 |
0.1 |
0.05 |
≤1 |
30-35 |
50-55 |
|
≤2.0 |
|
≤0.1 |
≤0.1 |
|
≥50 |
≥30 |
|
≤1.5 |
|
≤0.1 |
≤0.1 |
0.15 |
Our Premelted LF refining slag Features:
1. Low melting point and fast melting speed, shorten refining time and reduce refining power consumption;
2. Good fluidity, good desulfurization and removal of inclusions;
3. There is no flame, little dust, and good safety;
4. No water absorption, no dust, no deterioration during storage and transportation;
5. The submerged arc has a good effect, which reduces the erosion of the lining caused by the arc and improves the life span.



1.Are you factory or trading?
We are factory with ISO 9001:2015 certified.
2. How about the capacity?
High output, with an annual output of 80,000 tons, timely delivery; guarantee delivery date.
3. How to guarantee quality?
Always a pre-production sample before mass production; Always final Inspection before shipment;
4.What can we buy from you?
Graphite electrode,electrode paste,carbon raiser,carbon product, and other graphite products.
5. How to confirm the grade of graphite electrode?
Please send inquiry to us, our sales manager will confirm the details and price for you.
Customers will be asked to provide electric arc furnace parameters and specifications and sizes of electrode.
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