The reason why Transalloys basically scrapped the 2 x old 7 MVA...

The reason why Transalloys basically scrapped the 2 x old 7 MVA furnaces that GMC bought is because they were too small for producing SiMn and obsolete. These furnaces used previously by Transalloys to make MC FeMn and this was done by using SiMn with a lime-ore melt to produce the MC ferro manganese. This would be a more difficult way for GMC as they cannot produce SiMn and therefore will be using FeSi and Mn ore + coke etc.

Transalloys had stopped making ferro manganese, they currently use submerged arc furnaces comprising of two 48 MVA semi-closed furnaces and three 18 MVA open furnaces to produce Silico manganese.
This is about to change as I note that Transalloys has just purchased a CLU convertor to produce MC and LC FeMn.
Its a shame that GMC bought those 2 x 50 year old scrap furnaces instead of this new technology.

Order for CLU converter to TRANSALLOYS

UHT is now happy to announce the supply of the 5th CLU converter in South Africa to FeMn Producer TRANSALLOYS. The converter will be commissioned early 2019 and produce medium carbon FeMn. This supply will bring back CLU to the city of eMalahleni where the success story of ferroalloy refining through the CLU rounte once started.
The CLU process is cost-effective and ideal for MC and LC FeMn production due to the excellent temperature control without alloy dilution. Super-heated steam which is utilized as one of the process gases acts as coolant by controlling the temperature in the metal bath through the endothermic reaction that occurs when the steam is split into Oxygen and Hydrogen after injection. Thus, by balancing the temperature, the need for cooling material decreases and the Mn yield is enhanced.
UHT – Uvån Hagfors Teknologi AB is a Swedish technology supplier of AOD and CLU converter refining plants, GRANSHOT metal granulation units and related services for producers of special and stainless steel, pig iron, ferroalloys and base metals.