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RW silicium GmbH Introduction

  • Tuesday, August 12, 2014
  • Source:ferro-alloys.com

  • Keywords:Silicon metal,si
[Fellow]G.S.Energy is the largest producer of silicon metal and the only producer of refined silicon in Thailand. It has been approved by the Board of Investment of Thailand (BOI), certificate No. 1588(2)/2551.Our customers include major silicone chemical, aluminum an...

The german company RW silicium GmbH, is a manufacurer of metallurgical silicon. The silver coloured semi-metal is generated in a process whereby quartz and carbon are converted in electric arc furnaces. It is used in the Chemical Industry as a basic element for silicione chemistry, microelectronics and solar energy and furthermore it is utilized as an alloying metal in aluminium foundries.

Amorphous silicon dioxide (mikrosilica) is also obtained as a by-product during the manufacturing process. The so-called RW-Filler is used either as an uncompacted, high-grade microfiller - or compacted as RW-Compasil - in ceramic and refractory products and fibre-cement.

RW silicium GmbH today has about 110 employees.

 

1947 The Vereinigte Aluminiumwerke (VAW) get the permission to produce Ferrosilicon (FeSi 45/ 75/ 90), which is needed in steel production.
1948-1951 Start-up of three Ferrosilicon-furnaces with a total load of 17 MW.
1955 Extension of the furnace building and start-up of a 4th furnace.
1969 The production is more and more changed to Silicon-Metal.
1976 Start-up of a filter baghouse to clean the off-gases (production of Silica-Fume) with a capacity of 800.000 m?/h.
1995-1996 Start-up of two casting machines for Silicon-Metal. The high grade product "Silcocast" is selled to the Chemical Industry for the production of silicones.
1997 Installation of tap hole de-dusting units to collect the fine dust.
1998 Change from VAW aluminium AG to Graphit Kropfm黨l AG on October 1st.
1999 Start-up of a second baghouse with 400.000 m?/h. Increase of the production from 20.000 to 26.000 metric tons per year.
2001 Start-up of two automatic raw material preparation plants.
2002 The production of "RW-Filler Q1" takes the demands of high grade Microsilica. Increase of the storage capacity for 250m?.
2004 Improvement of the metal-transport by increasing of the size of casting laddles.
2008 Comissioning of another baghouse filter with 400.000 m?/h capacity.
2009 Revamping of furnace No. 4 with new electrode system.

 

  • [Editor:Yueleilei]

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