Coproducts

Overview

The industrial co-products come from different stages of the steel production process. Part of these co-products are generated in the "Presidente Vargas" steel mill, which is located in "Volta Redonda - RJ". They are recycled internally, returning to the production flow, while those who no longer serve to CSN are sold.

Zinc Sludge


Product Description:

Material generated during the galvanizing process of the steel in the galvanizing lines

Main applications: Raw material for zinc oxide production, for the production of rubber, micronutrients for the soil, animal feed and pharmaceutical industries.

Specifications:

Product with about 90% zinc (Zn).

Additional Information

Transport Information
Class NBR 10004: II-A
Vehicle type: DRY LOAD TRUCK

Customer Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.

Transporter Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
RNTRC - National Registration of Cargo Road Transporters issued by ANTT.

Source: GVS Catalog

Galvalume Sludge


Product Description:

Material generated during the steel galvanizing process in the galvanizing lines at CSN Paraná

Specifications:

Al(%) Fe(%) Si(%) Zn(%)
49.03 7.81 2.67 40.49
Additional Information

Transport Information
Class NBR 10004: II-A
Vehicle type:

Customer Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
Technical Opinion of receiving state

Transporter Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
RNTRC - National Registration of Cargo Road Transporters issued by ANTT.

Synthetic Iron Oxide


Product Description:

Material from the Acid Recovery Unit (ARU), derived from high granulometry stripping

Main applications: ferrite, sand blasting replacement, with the advantage of not causing silicosis problems; used as a counterbalance due to high density, and in composition of mortars.

Specifications:

Compound (%) Fe2O3 Total Fe SiO2 MnO CaO Al2O3
Average 98.06 68.57 0.30 0.23 0.10 0.21
Additional Information

Transport Information
Class NBR 10004: II-A
Vehicle type: DUMP TRUCK

Customer Environmental Documentation:
LO- Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.

Transporter Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
RNTRC - National Registration of Cargo Road Transporters issued by ANTT.

Red Iron Oxide


Product Description:

Material from the Acid Recovery Unit (ARU), derived from low granulometry stripping

Main applications: Water treatment

Specifications:

Parameters Unit Analytical results
Superior Calorific Value kcal/kg 171
Iron % % p/p 82.5
Fe2O3 % p/p 118
Additional Information

Transport Information
Class NBR 10004: II-B
Vehicle type: TRUCK

Customer Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
Technical Opinion of receiving state

Transporter Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
RNTRC - National Registration of Cargo Road Transporters issued by ANTT.

Mill Scale

Product Description:

Material generated during the hot rolling processes; rich in iron and variable granulometry.

Specifications:

Chemical analysis
Fet 70,80
SIO2 0.27
AI2O3 0.16
CaO 0.09
MgO 0.02
P 0.0080
Humidity 2.8
Oils / greases 0.6
Physical analysis
>6.35mm 5.33
>0.150mm 81.74
<0.150mm 12.93
Additional Information

Transport Information
Class NBR 10004: II-A

Customer Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.

Transporter Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
RNTRC - National Registration of Cargo Road Transporters issued by ANTT.

Blast Furnace Dust Collector


Product Description

Fine powder generated in a blast furnace system; rich in iron, manganese and lime oxide.

Specifications:

Parameter Content (%)
CaO 5.33
MgO 2.01
Total Fe 53.22
Additional Information

Transport Information
Class NBR 10004: II-A

Customer Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.

Transporter Environmental Documentation:
LO - Operating License issued by the environmental control agency.
CTF - Federal Technical Registration at IBAMA.
RNTRC - National Registration of Cargo Road Transporters issued by ANTT.

Last Update on November 04, 2016

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