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Overview
In addition to the main product, the steelmaking process generates the so called co-products. For every ton of steel produced, roughly 500 to 600 kg of co-products are generated. Initially they were called “waste products,” being stored in landfills or discarded in the environment.
With the creation of the Special Sales Area, CSN opted to leverage business in the domestic market and the foreign market, thus ensuring the correct disposal of these co-products.
This business unit is divided into the following segments:
- Carbochemicals
- Co-products
- Recyclables
- Lime
The applications of co-products are plenty: fine chemicals, agribusiness, aluminum industry, rubber, polymers, leather, metallurgy and as raw materials in other activities.
The business unit has great integration and synergy with the area of Environment of CSN, ensuring that all products are used in an environmentally-friendly way.
Generation Flow
Tar
Product Description
Product derived from the gas obtained by distillation of coal during the coke production process; used as raw material in the manufacture of pig iron in blast furnaces.
Main applications:Raw material for pitch distillation, anthracene oil, naphthalene and disinfectant oil. Also used as fuel.
Specifications
| ANALYSIS |
UNIT |
METHOD |
VALUES |
| Water |
% |
CSN – PP82678 |
Max. 10 |
| IQ |
% |
CSN-PP82673 |
Max. 8 |
Additional Information
Transporter Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
Customer Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
CRQ – Registration required at the Regional Chemistry Council.
Transporter Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
Pitch
Product Description
Product derived from tar distillate, composed of hydrocarbons rich in aromatics obtained on the base of column at temperatures of about 350 º C.
Main applications: Raw material for the manufacture of electrodes for electric furnaces and anode paste for the production of aluminum and ferroalloys. Also used as insulation and pipe coating to waterproof concrete slabs.
Specifications:
| ANALYSIS |
UNIT |
METHOD |
VALUES |
| PA |
ºC |
ABNT NBR 13923 |
107 to 113 |
| IQ |
% |
ABNT NBR 13924 |
9 to 17 |
| IT |
% |
ABNT NBR 13925 |
25 to 38 |
| Ashes |
% |
ABNT NBR 13926 |
0.28 Max |
| Fixed Carbon |
% |
ABNT NBR 13927 |
55 Min |
Additional Information
Transport Information
UN number: 1999 – liquid
Hazard Class: 3
Number of risk: 30
Vehicle type: TANKER TRUCK EQUIPPED WITH HEATING TORCH
Customer Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
CRQ – Registration required at the Regional Chemistry Council
Transporter Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
Source: GVS Catalog
Anthracene oil - Antrafen
Product Description:
Product derived from tar distillate, composed of hydrocarbons rich in aromatics obtained in the middle of column at temperatures of about 115 º C.
Main applications: Raw material for the carbon black industry for rubber production and also used as fuel.
Specifications:
| ANALYSIS |
UNIT |
METHOD |
SAMPLING |
VALUES |
| Water Content |
% |
ASTM D95 |
Tank |
3.0 Max |
| Specific gravity |
– |
CSN-PP802685 |
Tank |
1.025 Min |
| Tar Acids |
% |
CSN-PP802686 |
Tank |
25.0 Min |
| Benzene |
% |
Chromatography |
Tank |
0.3 Max |
Source: GVS Catalog
Additional Information
Transport Information
UN number: 1136
Hazard Class: 3
Number of risk: 30
Vehicle type: TANKER TRUCK WITH OR WITHOUT HEATING TORCH
Customer Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
CRQ – Registration required at the Regional Chemistry Council
Transporter Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
Naphthalene
Product Description:
Product derived from tar distillate, composed of hydrocarbons rich in aromatics at temperatures of approximately 110 º C.
Main applications: Raw material for the manufacture of phthalic anhydride, naphthalene, insulators, and tanning for leather and concrete industries (sulfonated naphthalene).
Specifications:
| ANALYSIS |
UNIT |
METHOD |
SAMPLING |
VALUES |
| Solidification point |
ºC |
ASTM D1493 |
Tank |
77.5 Min |
| Purity |
% |
JIS K 2436 |
Tank |
95.0 Min |
| Water Content |
% |
ASTM D95 |
Tank |
0.5 Max |
Additional Information
Transport Information
UN number: 1134 – solid; 2304 – cast
Hazard Class: 4.1
Number of risk: 40 – solid; 44 – cast
Vehicle type: TANKER TRUCK WITH THERMAL INSULATION AND
COIL FOR HEATING STAINLESS STEEL
Customer Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
CRQ – Registration required at the Regional Chemistry Council
Transporter Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
Anhydrous Ammonia
Product Description:
Anhydrous ammonia of high purity (99.95%) is obtained by the treatment of coke oven gas in an ammonia phosphate solution.
Main applications: Raw material for the manufacture of ammonium hydroxide, urea (fertilizer) and the production of soda ash (sodium carbonate); also used in the food, catalysts and cooling industry.
Additional Information
Transport Information
UN number: 1005
Hazard Class: 2.3
Number of risk: 268
Vehicle type: PRESSURIZED TANKER TRUCK
Customer Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
CLFPF – Operating License Certificate, issued by the Federal Police.
CRQ – Registration required at the Regional Chemistry Council
Transporter Environmental Documentation:
LO- Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
Specifications:
| Analysis |
Unit |
Method |
Sampling Values |
Values |
| Water Content |
% |
CSN- PP 502384 |
Tank |
0.05 Max. |
| Purity |
% |
CSN- PP 802640 |
Tank |
99.95 Min |
BTX (Benzene, Toluene and Xylene)
Product Description:
Mild aromatic oils derived from coke oven gas are processed generating a mixture composed primarily of benzene, toluene and xylene.
Main applications: Raw material for the production of solvents (benzene, toluene and xylene), resins, plasticides, polymers and as chemical intermediate for industries in general.
Specifications:
|
UNIT |
METHOD |
SAMPLING |
VALUES |
| Benzene |
% |
Chromatography |
Tank |
62 min. |
| Toluene |
% |
Chromatography |
Tank |
12 min. |
| Xylene |
% |
Chromatography |
Tank |
3 min. |
| Heavy |
% |
Chromatography |
Tank |
18 Max. |
Additional Information
Transport Information
UN number: 1993
Hazard Class: 3
Number of risk: 33
Vehicle type: STAINLESS STEEL TANKER TRUCK
Customer Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
CLFPF – Operating License Certificate, issued by the Federal Police.
CRQ – Registration required at the Regional Chemistry Council
Transporter Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
CLFPF – Operating License Certificate, issued by the Federal Police.
Sulfur
Product Description:
Sulfur is obtained from gas cleaning processes.
Main applications: Used in the manufacture of ferroalloys and soil correction.
Specifications:
| ANALYSIS |
UNIT |
METHOD |
SAMPLING |
VALUES |
| Purity |
% |
CSN-PP802657 |
Lot |
98 min. |
Additional Information
Transport Information
UN number: 1350
Hazard Class: 4.1
Number of risk: 40
Vehicle type: SEALED AND CANVASSED DUMP TRUCK
Customer Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
CRQ – Registration required at the Regional Chemistry Council
Transporter Environmental Documentation:
LO – Operating License issued by the environmental control agency.
CTF – Federal Technical Registration at IBAMA.
AATIPP – Environmental Authorization for Interstate Transportation of Dangerous Goods issued by IBAMA.
RNTRC – National Registration of Cargo Road Transporters issued by ANTT.
EPAE – Immediate Emergency Assistance Company
Environmental insurance
Last update on
November 19, 2020.
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