Steelmaking

PIG IRON MARKET OVERVIEW

The integrated plants are currently present where good-quality raw materials for reduction processes are increasingly scarce and expensive. This context is favorable to the use of ores and fuels with higher contents of contaminants. On the other hand, client requirements for steel quality are increasing, which results in difficulties in manufacturing some types of products, such as nodular and special iron, intended for casting or fine steel plants to supply the market of special pipe plates. But it is not about sulfur only. Phosphorus also causes problems at the Blast Furnace operation.

TECNOSULFUR SOLUTION

Tecnosulfur offers a full line of ladle-applied desulfurization, dephosphorization, and desiliconization agents used in the primary refining of pig iron. We customize the products for use in accordance with the requirements of each process. The agents consist of calcium oxide, calcium carbide, metallic magnesium, and others. Tecnosulfur also supplies the equipment required to apply these products, such as agent addition or injection systems. A specialized team makes the operation projects, assembly, start-up, and follow-up.

In addition to its recognized quality, Tecnosulfur provides its clients with enhanced products that comprehend a precise technical diagnosis, follow-up of the application by specialized technicians, and after-sale services, ensuring customer satisfaction.

TECNOSULFUR ADVANTAGES

The primary purpose of the Tecnosulfur line of desulfurization, dephosphorization, and desiliconization agents is to enable the manufacture of the finest pig iron. The products are applied using a deep injection in ladles using refractory spears and carrier gas. Our advantages include lower specific consumption, higher rates of desulfurization and dephosphorization, higher treatment speed, and lower cost per treated ton.

OUTCOMES

  • Removal of sulfur and phosphorus at extremely low levels, which allows for the manufacture of fine steels and demanding applications
  • Desulfurization and dephosphorization rates over 90 percent 
  • The pig iron gets treated with specific, cost-effective, low consumption of the agent, which allows for the use of lower-quality raw materials in the Blast Furnace
  • Treatment time tailored to each process
Steel Treatment

ELECTRIC STEEL MILL OVERVIEW

Due to their versatility, electric steel mills are increasingly employed to manufacture high-carbon and low-carbon, structural, special alloy, and mechanical construction steels, which have high resistance, toughness, and purity requirements. However, the inappropriate quality of the raw materials employed increases the process difficulties due to the presence of harmful residual elements, such as sulfur, phosphorus, hydrogen, nonmetallic inclusions of SiO2 and Al2O3, among others.

TECNOSULFUR SOLUTION

Tecnosulfur offers a complete line of sintered synthetic slags and customized tundish covering powders to serve electric steel mills, which act in a specific manner in each process. Such products consist of calcium aluminates, calcium and magnesium silicates, pseudo silicates and aluminates, and others.

In addition to its recognized quality, Tecnosulfur provides its clients with enhanced products that comprehend a precise technical diagnosis, follow-up of the application by specialized technicians and after-sale services, and ensure customer satisfaction.

TECNOSULFUR ADVANTAGES

The Tecnosulfur line of sintered synthetic slags’ primary purpose is to remove undesired elements in the steel (S and nonmetallic inclusions) and prevent hydrogen pick-up. They are used in ladle furnaces with excellent spreadability while performing other important functions in the secondary refining of steel, such as:

  • Protecting the hot metal by avoiding its contact with the atmosphere and, consequently, the absorption of undesirable gases and minimization of thermal losses, making the temperature drop to which the steel is subject more controllable
  • Preventing the exposure of the electrode electric arc during the heating in ladle furnaces, reducing thus the wear of the refractory lining and the vault
  • Reducing the tap to tap and consequently the consumption of electricity
  • Forming a coating in the ladle that extends the service life of the refractory linings
  • Reducing the flicker effect due to higher stability of the electric arc

Furthermore, the sintered synthetic slags allow for the manufacture of steels with reduced hydrogen contents, even in plants with no degassing equipment.

OUTCOMES

  • Deep removal of nonmetallic inclusions that allows for the manufacture of special steels
  • High desulfurization rates
  • Possibility of manufacturing steels with hydrogen content lower than 5.0 ppm
  • Significant increase in the service life of ladles
  • Reduction in the consumption of electrodes
  • Reduction in the consumption of electricity
Electric Steel Mills

INTEGRATED PLANT OVERVIEW

The integrated plants are currently present where good-quality raw materials for reduction processes are increasingly scarce and expensive. This context is favorable to using ores and fuels with high contents of contaminants, which requires treating the pig iron before sending it to the steel mill since its cost is lower than the procedures carried out in ladles during the refining stage. When performed in the intermediate step between the Blast Furnace and the Steel Mill, the treatments provide the plants with great versatility, upon enabling the manufacture of several types of steels, even those with strict requirements.

TECNOSULFUR SOLUTION

Tecnosulfur offers a full line of desulfurization, dephosphorization, and desiliconization agents for application in torpedo cars or ladles. We customize the products for use in accordance with the requirements of each process. The agents consist of calcium oxide, calcium carbide, metallic magnesium, and others. Tecnosulfur also supplies the equipment required to apply these products, such as agent addition or injection systems. A specialized team makes the operation projects, assembly, start-up, and follow-up.

In addition to its recognized quality, Tecnosulfur provides its clients with enhanced products that comprehend a precise technical diagnosis, follow-up of the application by specialized technicians, and after-sale services that ensure customer satisfaction.

TECNOSULFUR ADVANTAGES

The primary purpose of Tecnosulfur desulfurization and dephosphorization agents is to remove sulfur and phosphorus from the metal. The agents are applied using a deep injection in torpedo cars or ladles through refractory spears and carrier gas. Advantages include lower specific consumption, high desulfurization rates, high treatment speed, and low cost per treated ton.

OUTCOMES

  • Removal of sulfur and phosphorus at extremely low levels, what allows for the manufacture of fine steels and demanding applications
  • Desulfurization and dephosphorization rates over 90 percent
  • The pig iron is treated with low specific consumption of agents, ensuring more cost-effectiveness, what enables the use of lower-quality raw materials in the Blast Furnace
  • Tailor-made treatment time for each process
Primary Refining

INTEGRATED PLANT OVERVIEW

Due to the constant technological evolution, since the continuous casting pieces of equipment are placed at the end of the steel manufacturing chain, they are extremely strategic points in integrated plants.

TECNOSULFUR SOLUTION

With the purpose of serving the continuous casting processes of electric steel mills, Tecnosulfur offers a full line of customized tundish covering powders to act on a specific manner in each process. Such products are made of calcium aluminates, calcium and magnesium silicates, pseudo silicates and aluminates, and others.

In addition to its recognized quality, Tecnosulfur provides its clients with enhanced products which comprehend a precise technical diagnosis, follow-up of the application by specialized technicians and after-sale services, what ensures customer satisfaction.

TECNOSULFUR ADVANTAGES

The primary purpose of the Tecnosulfur line of covering powders is to remove nonmetallic inclusions. They are applied in the tundish on the hot metal with excellent spreadability, also performing other important functions such as: they protect the hot metal by avoiding its contact with the atmosphere, what minimizes the thermal losses; reduction of the refractory wear of the tundish, what extends its service life; and improvement in operating conditions. The covering powders are tailor-made for each application. Therefore, they have a melting point proper to the process, preventing the formation of slabs or the excessive melting of the product.

OUTCOMES

  • Deep removal of nonmetallic inclusions, what allows for the manufacture of special steels
  • Protection of the steel against reoxidation
  • Reduction of thermal losses
  • Melting point adequate to each process
  • Protection of the refractory lining
  • Extension of the tundish service life
SECONDARY REFINING

INTEGRATED PLANT OVERVIEW

Due to constant technological evolution, the continuous casting pieces of equipment are placed at the end of the steel manufacturing chain and are extremely strategic points in integrated plants.

TECNOSULFUR SOLUTION

With the purpose of serving the continuous casting processes of electric steel mills, Tecnosulfur offers a full line of customized tundish covering powders to act on a specific manner in each process. Such products are made of calcium aluminates, calcium and magnesium silicates, pseudo silicates and aluminates, and others.

In addition to its recognized quality, Tecnosulfur provides its clients with enhanced products which comprehend a precise technical diagnosis, follow-up of the application by specialized technicians and after-sale services, what ensures customer satisfaction.

TECNOSULFUR ADVANTAGES

The primary purpose of the Tecnosulfur line of covering powders is to remove nonmetallic inclusions. They are applied in the tundish on the hot metal with excellent spreadability, also performing other important functions such as: they protect the hot metal by avoiding its contact with the atmosphere, what minimizes the thermal losses; reduction of the refractory wear of the tundish, what extends its service life; and improvement in operating conditions. The covering powders are tailor-made for each application. Therefore, they have a melting point proper to the process, preventing the formation of slabs or the excessive melting of the product.

OUTCOMES

  • Deep removal of nonmetallic inclusions, what allows for the manufacture of special steels
  • Protection of the steel against reoxidation
  • Reduction of thermal losses
  • Melting point adequate to each process
  • Protection of the refractory lining
  • Extension of the tundish service life
Continuous Casting