In a statement released Sunday afternoon by the company, Kurniawan said the furnace was under maintenance and not operating at the time. However, “residual slag in the furnace” came in contact ...

“We have started to change the burden – the raw materials we put in the top of the furnace – to make sure the slag formed on ...

On the third night of smelting, when the tatara masters break open the clay furnace to expose the tamahagane ... remaining undissolved impurities, or "slag." This step is as vital as it is ...

In the blast furnace, it is so hot that carbon monoxide ... impurities in the haematite, to produce slag – which is calcium silicate. This is separated from the iron and used to make road ...