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2011-Sustainable Industrial Processing Summit
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| Editors: | Florian K |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2012 |
| Pages: | 646 pages |
| ISBN: | 978-0-9879917-4-4 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
LEAD-ZINC SMELTER (KCM AD), BULGARIA AND SOIL CONTAMINATION: PAST, PRESENT AND FUTURE
Boyan Boyanov1; Yavor Kehaiov2;1UNIVERSITY, Plovdiv, Bulgaria; 2KCM AD, Plovdiv, Bulgaria;
Type of Paper: Regular
Id Paper: 518
Topic: 7
Abstract:
The Lead-Zinc Smelter KCM AD is situated near Plovdiv (Bulgaria) in one of the most luxuriant lowland in the world – the Thracian, which is famous with developed intensive agriculture. KCM AD is the biggest producer of non-ferrous metals in the Central and Eastern Europe. In the past KCM AD was a “hot” spot on the Bulgarian map in connection with the contamination of soil, air and water with aerosols, Pb, Cd, Zn, SO2, etc.A periodical monitoring of the soil contamination on the vicinity of KCM AD is carrying out from the 2000 year. For this purpose 15 points of sample takings are choused based on the preliminary investigations. The results obtained for the Pb, Cd and Zn content in the sample takings points, at different distances from KCM AD show that they are more than threshold limit values {TLV) several times. The soil contamination with lead has higher degree comparing with the zinc contamination and has a larger area. Now there is a tendency for decreasing of soil contamination in the area of KCM AD. The highest values of the main pollutants (Pb, Cd, Zn) are established in the soil from the forest-shelter belt which is very close to the Pb-Zn smelter. The process method used in lead plant now is pyrometallurgical, consisting of sintering, shaft furnace reduction smelting and pyro-refining. KCM AD is planning to implement a new, modern and highly efficient lead smelting plant in compliance with the European and World’s best environmental standards. The aims of the project are:• To complete technological and technical renovation of the lead producing installations.• Solving the present environmental problems with the high emissions of diffuse dust and SO2 in off-gas.• Enabling the future operation of the New Lead Plant (NLP) in full conformity with the Bulgarian emission standards which are based on the European Standards (recommendable for EU) for the environment.The Basic Engineering undertaken for KCM AD is based on the replacement of the current lead smelting facility with process plant based upon two-stage non-ferrous Top Submerged Lance (TSL) oxidization/reduction process, namely Ausmelt Technology. KCM AD’s plan is to proceed to a detail design and implementation phase culminating in construction of new plant in 2013.