Environmental improvements
In 2008, Höganäs’ environmental activities featured efforts to streamline facilities, mainly in terms of energy and raw materials consumption. Activities conducted or underway at Höganäs’ facilities are as follows:
Höganäs (Sweden)
• Installation of frequency inverters for four smoke fans in the sponge works could achieve a potential 30% saving in power consumption at the plant.
• Installation of an excess heat boiler, enabling surplus heat from exhaust gases to be utilised to increase district heat production by some 5 MW during scheduled production.
Halmstad (Sweden)
• Installation of a silencer has helped reduce noise in the surroundings.
Mogi das Cruzes (Brazil)
• Production capacity has been co-located to a single site, reducing internal transports between the previous two locations by about half a million ton kilometres of truck transports per year.
Ahmednagar (India)
• New smoke extractors and filter installations further reduce dust emissions.
• New plant for recovering excess heat from the belt furnace process replacing a boiler for vaporizing LPG, reducing LPG needs by 1% yearly.
Stony Creek (US)
• Installation of oxyfuel technology in the arc furnace is increasing the energy efficiency of the smelting process and reducing CO2 and NOX emissions.
Johnstown (US)
• Investments to further improve dust extraction system in several production phases, streamlining the collection of dust and reducing emissions.