Steel Productive Process

The Companhia Siderúrgica do Pecém (CSP) already exports its steel plates to more than 10 countries, increasing considerably the product moves from the port of pecem, in Ceara, Northeast Brazil, and what to put between the largest exporting companies in the country. The challenges of renew steel, with the permanent quest for competitiveness and productivity enhancements, logistics and security. The CSP is prepared to overcome the challenges also count with the partnership of the Government of the State of Ceará, the Export processing zone of Ceará (spas-EC) and of the Cearáportos, which runs the port of Pecém. The CSP is transforming the Ceará in a producer and exporter of high quality steel.

 Raw Materials Yard

  • The raw materials yard is the area of ​​the steel mill for receiving, granulometric processing, storage and homogenization of raw materials and inputs used in steel production. The main raw materials are coal, iron ore and limestone. Generally in open areas, the inputs are arranged in piles and are transported to the production units.

Coke plant

  • The coke oven is the area responsible for the production of coke, which is the product of the distillation and agglomeration of coal. This process unit has as main characteristic the indirect heating of the coal in closed furnaces (cells) to remove the volatile matter contained in it. Coke is the reducing input of iron ore loaded into the blast furnace. The gas generated in the coking plant is used in other steelmaking processes and in the thermoelectric plant as a heat source.

Sinter plant

  • Sintering is the unit for the agglomeration of iron ore fines for blast furnace loading. In this process, the ore fines are mixed with coal and limestone fines and loaded onto the sintering belt. The mixture is ignited and the heat of the coal combustion partially melts the ore fines, creating an agglomerate which at the end of the process is crushed and sieved, thus obtaining the sinter in the quality required for loading into the blast furnace.

Blast furnace

  • The blast furnace is the unit for the production of liquid pig iron, which will be transformed into liquid steel in the next stage of the process (steel industry). In the production of pig iron, iron ore (in the form of sinter and pellets) is carried by the top of the blast furnace along with the coke and the fluxes (limestone and others).

Steelmaking

  • At the steelworks, the liquid pig iron received from the blast furnace is directed to pretreatment stations, which promote its desulphurisation, and subsequently loaded into oxygen converters (BOF), where it is refined and transformed into liquid steel. Then, the liquid steel is treated in secondary metallurgy equipment, a complementary process that promotes the final adjustment of its temperature, chemical composition and physical characteristics, allowing the production of steel of a high degree of purity and quality.

Continuous casting

  • Continuous casting, the final step in the production of high quality sheets, is the unit responsible for the transformation of liquid steel into solid semi-finished products (plates) in the specified dimensions. This process consists of the progressive solidification of the liquid steel when passing through refrigerated molds and water spray chambers. Continuous casting is based on the vertical casting of liquid steel into a water-cooled copper mold, open at the top and bottom. Heat is withdrawn from the steel during the passage of this material through the mold, thereby forming a solid skin external to the steel shaft with sufficient strength to contain the liquid steel. After the mold exits, the material undergoes pressure from the weight of the vertical steel column, a set of supports defines the thickness and width of the plate. Finally, there is the cut of the plate according to specification of the length of the final product.