Application of High-Temperature Anti-Adhesion Coatings on Ladles. Currently, magnesium-carbon bricks are widely used for ladle slag lines worldwide. Their excellent resistance to slag erosion stems from the poor wettability of molten slag on the carbon content within these bricks. However, magnesium-carbon bricks in the slag line are prone to oxidation due to their proximity to the ladle opening, particularly during in-line baking, post-steel-pouring, and transportation. Once oxidized, molten slag can easily penetrate the bricks. Due to significant temperature drop at the ladle mouth, the slag readily cools and solidifies, leading to slag buildup. This increases the ladle’s weight, reduces its effective volume, and shrinks the mouth diameter. Such issues not only compromise the operational safety of crane-mounted transport vehicles but also adversely affect subsequent steel refining processes.
Application of High-Temperature Anti-Adhesion Coating on Ladles. To address slag adhesion issues, one method involves removing adhered slag through oxy-fuel cutting or mechanical removal. However, this often damages the furnace lining, reduces equipment turnover frequency, and consumes significant manpower and resources. Another approach involves applying RLHY-2037 high-temperature anti-adhesion coating. This coating isolates molten slag from the furnace lining, preventing slag adhesion. The coating exhibits properties such as non-aging, color stability, high hardness, impact resistance, and excellent adhesion. It can be applied to the surfaces of various high-temperature smelting equipment, effectively preventing the adhesion of molten steel, iron, aluminum, copper, and lead, as well as slag residues like steel slag, iron slag, aluminum slag, copper slag, lead slag, rubber, and other materials adhering to equipment and instruments at high temperatures.
RLHY-2037 High-Temperature Resistant Anti-Adhesive Coating possesses a specialized function that resists adhesion by other sticky substances or allows easy removal once adhered. This capability stems from the coating’s anti-adhesive and self-cleaning properties, characterized by high temperature resistance, extremely low surface energy, low friction coefficient, high slip resistance, and strong repulsion force. Composed entirely of inorganic materials without any organic components, this coating emits no volatiles, ensuring high safety and minimal environmental impact. Its high melting point enables strong repulsion at elevated temperatures, coupled with a high thermal expansion coefficient, excellent thermal stability, superior thermal conductivity, and high strength. It withstands erosion and adhesion from molten metals and slag at extreme temperatures.
High-temperature resistant anti-adhesion coatings effectively reduce raw material losses caused by slag adhesion and minimize frequent equipment maintenance, ensuring safe production and personnel safety for enterprises while delivering significant economic benefits.
More details about ladle furnace
What is the coating on steel?
Zinc coatings are applied to steel in a hot-dip galvanising process, where the steel is submerged in a kettle or vat of molten zinc. The zinc alloy layer that forms on the steel when it is withdrawn provides corrosion protection in several ways.
What is the difference between ladle furnace and Electric Arc Furnace?
Both ladle furnaces and electric arc furnaces are essential throughout the steelmaking process despite the fact that they have different roles. While the ladle furnace’s function improves the quality of the molten steel, the electric arc furnace process, on the other hand, is aimed at the raw material’s first melting.
What is a smelting ladle?
Ladles are used as the vessel to transport and pour molten metals. They range in size to accommodate the pour weights needed. Ladles are made of different materials for different alloys. Steel and Iron Ladles are often large and use air or hydraulics to move and lift them.
What is the use of ladle furnace slag?
It is generally used in construction materials, soil rejuvenation, and CO2 capture. This paper reviews the production process, the mineralogical and morphological properties, stabilization techniques, and the applications of ladle furnace (LF) slag.
How does a ladle furnace work?
LF refers to a type of furnace used for the secondary refining of steel, characterized by its lower volume and the use of graphite electrodes to generate high-power electric arcs for heating. It allows for the purification and homogenization of molten steel through the addition of various fluxing agents and admixtures.
What is a ladle preheater?
Ladle preheaters are an essential component in the steelmaking process. They are used to preheat the ladles before they are used to transport molten metal from one process to another.