LONZA factory (Trattendorf)
| LONZA factory | |
|---|---|
| legal form | |
| founding | 1917 |
| resolution | June 28, 1990 |
| Seat | Spremberg - Trattendorf , Germany |
| Branch | Chemical industry |
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The LONZA factory was an industrial company in what is now the Trattendorf district of the city of Spremberg . The LONZA plant included the plant that was commissioned in 1917 and the ferro-alloy plant that was also commissioned in 1985. Colloquially, however, the LONZA plant was always spoken of.
LONZA factory
The LONZA plant was built in the years 1915–1916 (other details 1914/15) and commissioned in 1917. The location was consciously sought to be close to the newly built Trattendorf power plant , as the operation was equipped with very electricity-intensive systems. The client and owner was Lonza AG from Visp , Switzerland . Production began with the manufacture of synthetic fertilizers from nitrogen , ammonia and calcium carbide .
The system consisted of three electric arc furnaces :
- 1 electric arc furnace with 13100 kVA
- 2 electric arc furnaces with 3000 kVA
From 1922 until the beginning of the 1950s, carbide was melted in the large electric arc furnace . This was followed by a switch to the production of ferro alloys .
The LONZA plant and the neighboring Trattendorf power plant survived the end of the Second World War completely undamaged. Since the plant was in Swiss possession, it could not be used for reparation purposes, unlike the power plant . In 1968, the Lonza factory, which was held in trust in Switzerland, was incorporated into the “VVB Eisenerz / Roheisen Saalfeld” of the Lippendorf ferro-alloy factory.
After switching to ferro-alloys, the derivative product ferrosilicon with a silicon content of 45% was produced in the large arc furnace, and silicon with 98% purity in the two smaller arc furnaces. In 1985, when production started in the new plant (ferro-alloy plant), the plant was shut down. This led to a significant reduction in air pollution in the Trattendorf area.
Ferro-alloy plant
The ferro-alloy plant was built in the years 1983–1985 east of the old plant by the French company SERETE. The foundation stone was laid on July 7, 1983. In order to keep spending on foreign currency within limits despite the technology from the non-socialist economic area , attempts were made to operate the technology from France with, among other things, measurement technology from the Soviet Union . This did not always work out as one had imagined.
The system consisted of two low-shaft electric arc furnaces :
- Electric arc lower shaft furnaces with 3 × 13,000 kVA each.
Ferrosilicon and metallurgical silicon were produced. Quartz gravel, high-temperature lignite coke , iron filings and wood chips were used in the production of ferrosilicon . Metallurgical silicon was made from quartz gravel, charcoal, and tree bark .
On June 28, 1990, the plant was one of the first to shut down in Spremberg after the political change . Except for the former administration building, both plants have been completely dismantled.