| TECHNOLOGICAL PROCESS OF FERROCHROMIUM OBTAINING WITH USAGE OF IRON-CONTAINING WASTES AND WASTES OF LEATHER INDUSTRY |
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Contact:
Prof. O.Komarov
phone (+375 17) 2312548
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Scientific - technological park
"METOLIT" at
Belarusian National Technical University
Address: 65/7, Nezalejnastsi ave., 220013, Minsk,
Republic of Belarus
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Application This technological process is applied at the enterprises and shops which process industrial and household waste products.
Technological process features
- raw material for processing:
- leather waste (LW): shreds of a skin, fats, fur and Cr2O3,
- iron-containing waste (ICW) containing not less than 50 % of ferric oxide: scale, chips, steel and iron casting slag and used catalysts;
- slag and catalysts are preliminary milled;
- scale, chip and slag are used without being preliminary briquetted;
The processing of wastes includes:
- drying of wastes;
- pyrolysis of LW;
- charge preparation from LW and ICW;
- synthesis of ferrochromium;
- separation of ferrochromium and slag;
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Advantages
- formation of biogas at processing of organic component of wastes;
- forming biogas can be used as a substitute of natural gas;
- ecological purity of toxic ferrous wastes processing;
- ecological conditions become better as a result of liquidation of WLI dumping polygons;
- low cost of raw for ferrochromium production;
- synthesized ferrochromium is a product conforming all requirements of metallur-gical industry;
- unbound slag is used in road building and by production of building materials.
Technical characteristics
The workshop of wastes processing was worked by power of 600 t/year
| Characteristics of ferrochromium: |
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contents of chromium in ferrochromium, %
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55-65
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size of pieces of ferrochromium, mm
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150x100x250
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| Characteristics of processing of LW and ICW: |
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output of waste processing plant, T/year
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600
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degree of chromium extraction, %
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90-92
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power consumption per 1t of processed LW and ICW, kWt/h
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2,5
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Transfer center of technologies |
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phone: (+ 375 17) 2373610
e-mail:
http://www.metolit.by |
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Scientific-applied republican unitary enterprise "Metolit" BNTU |
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phone: (+ 375 17) 2928342
fax: (+375 17) 2327183
e-mail: |
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Ministry of Education for the Republic of Belarus |
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