Between 200 and 600 microns thick and with 25% Aluminum content, for extra temperature resistance.
Heated Lances
- Between 200 and 600 microns thick and with 25% Aluminum content, for extra temperature resistance.
Special Low Carbon Steel Lances, with high resistance to high temperature, due to its Aluminum content and refractory layer.
Heated layer: between 200 and 600 microns thick and with 25% Aluminum content, for extra temperature resistance.
Ceramic coating: is a surface coating with castable, Silica - SiO2, nitrides and other refractories that give it resistance to corrosion and abrasion.
Performance 5 times higher than conventional black iron and 80% higher than ceramic tube, due to the heated layer.
The alumina generated is the component that gives it the greatest resistance to burning.
Environmentally, it produces less NOx and SOx gases because fewer tubes are burned.
Manufacturing: Daiwa
Recommended for this product:
Heat treatment is a patented thermal treatment, which consists of passing the tubes through an oven at 1000 °C for one day, and then micro-diffusing aluminum powder on the walls. The heat treatment changes the internal structure of the product, leaving iron with aluminum particles:
FeAl + O2 = Al2O3 + ..Kcal.
When oxygen passes through, alumina (Al2O3) is formed, which increases the combustion point to more than 2000 °C.
- For oxygen insufflation in electric furnaces - in open door operations.
- Cleaning of ladles and gutters
- Thermowells
- O2 and argon injection.
- Performance 5 times higher than conventional black iron and 80% higher than ceramic tube, due to the heated layer.
- The alumina generated is the component that gives it the greatest resistance to burning.
- It has a high degree of crystallization against bending and breakage.
- Multifunctionality as the lances can be used for other applications such as cleaning of tundish, slag, refractories and opening of tap holes.
- Environmentally, it produces less NOx and SOx gases because fewer tubes are burned.
The heated lance is used to inject oxygen into electric furnaces, either manually or by means of a door manipulator.
Objective: Improve combustion / Oxidation
Heated lance pipe is a kind of lance pipe used to inject oxygen and carbon or other additives in the steelmaking process. To achieve a high level of heat and oxidation resistance, heated lance pipe must undergo a heat treatment process. The calorizing process diffuses aluminum over the surface of a lance pipe and heats it to 1000 °C to form a heat-resistant aluminum-iron alloy (caloritized layer) on the surface. When exposed to high temperatures, a heat-resistant layer of aluminum oxide (alumina) forms on the surface of the caloritized layer, which inhibits severe oxidation of the lance pipe. Heated lance tubes have a great contribution to longer life, cost savings and safer operations in EAF, as well as in many other common furnaces in the steel industry.
AVAILABLE LENGTHS
2.75M Y 3M
It works at a pressure of 100 to 120 PSI of oxygen.
Lances
THERMAL
- Rapid Ignition
- Melting ferrous material
- Melting non-ferrous material
- Complementing oxyfuel
TEMPERATURE – 800 -900
DEGREES C
Ceramic coating.
Metal oxides and nitrides.
Lances
CERAMICS
- Threaded terminals
- Tº - 800-900 ºC
- It is not heat-treated.
- It is not heat-treated.
Between 200 and 600
microns
thickness
With 25% content
Aluminum
Lances
CALORIZED
- Extra resistance to tº.
- Special Low Carbon Steel Lances
- Surface coating with castable
Dimension:
3/4″ x 2,750mm
Extra strength for
direct injection into furnaces
Lances
CONCRETE
- Heated pipe lined with refractory concrete
- Extra strength for direct injection into furnaces
- Continuous operation at high temperatures
