Sustainable development is a hallmark of SINOBRAS, so Aço Cearense Group created SINOBRAS Florestal - A forest-based bioenergy that provides for reducing SINOBRAS, through its Production Unit Reducer.
With a careful work with regard to the environment, SINOBRAS also makes reuse 97.6% of the water that goes into its industrial process through a Water Treatment Plant and through two stations Sewage Treatment Plant, is the treatment of wastewater coming from the company. Air emissions are controlled by deducting systems, according to the characteristics of each production area, often being monitored.
Scrap transformed in Steel
Within its actions in this area, the steel used mechanisms for conservation of natural resources like water, soil and air and also develops the recycling of scrap metal through steelmaking, an input that can return infinitely often to production.
With the use of scrap iron and steel in SINOBRAS estimated using about 300 tons of raw material per year, which can be increased according to demand growth in steel production.
The use of scrap iron and steel as raw material to produce steel is warming the recycling market, developing the activity and avoiding disposal of this material in nature. SINOBRAS uses in its production the proportion of 30% pig iron in liquid form and 70% of scrap metal for steel. Several Brazilian states sell scraps to SINOBRAS.
To recyclers who are far from the plant, SINOBRAS offers the services of mobile-presses for compacting scrap, making the denser charge, enabling the reduction of transportation costs and increasing safety in the handling of these materials.
As part of the Environmental Policy and Security SINOBRAS, the recycling process requires training and adequacy of its suppliers for the supply of some types of scraps.
Within the action area of your metal plane, SINOBRAS is seeking partnerships and developing more effective projects with respect to the scrap market in the region.
The gases generated by high-furnaces for the production of pig iron are treated and used in billet reheating furnace in steel lamination process. The initiative avoids the emission of gases into the environment and also reduces energy consume.
Other investment in the environment is the dust removal system running through bag filters which remove solid particles from the air generated in the steel production process in the Steelworks. After filtering, the air returns clean to the atmosphere and the particles captured will be reused in the sintering process, whose products serve as raw material for Blast Furnaces, reducing the consumption of iron ore and coal. This process is under development at the plant.
Water and soil
Regarding the conservation of water, one of the most essential natural resources to man SINOBRAS also performs a careful work. Used in large volumes at the plant for cooling equipment and products, water works in SINOBRAS all closed in order to reduce circuit losses. To this end a mechanism for recirculation of water to all processes in the steel was installed. Using hydro cyclones, decanters tanks, centrifuges, filters, cooling towers, storage tanks and segmented type of water, the only form of loss is by evaporation.
With license granted by the Secretary of Environment of Pará State , SINOBRAS captures water from the Rio Itacaiúnas (Maraba - PA) and performs processing of the raw material in the company's Water Treatment Plant (WTP), within the most high quality standards. Rain water is also drained by a network that covers the entire operational area. The water goes to a decanter box and after is casting in the fountainhead of the plant. Still in the operational area, two stations Sewage Treatment in a closed system enable the reuse of effluents generated in SINOBRAS after treating them.
For the skillful operation of its processes, in particular the Electric Steelmaking, the company installed within the industrial complex a substation of electricity. The power supply of the plant is made at 138 kV and 50 MVA. To meet this demand investments were made in substation at the municipality of Marabá, Pará, increasing the level of energy of the city, which provided it further 100 MVA strain, resulting in improvements in the quality of energy supplied to the region.
To reduce power consumption, SINOBRAS uses liquid pig iron in steel production. With this method, there is no need to melt the pig iron for steelmaking, which reduces between 20% and 30% the time of its production. Another action of rational use of energy is the utilization of gases generated by the Blast Furnaces.