Erratum: Reduction of Kemi chromite with methane

It has come to our attention that some text in the Summary and Conclusions and the Acknowledgment in the paper entitled: 'Reduction of Kemi chromite with methane', by M. Leikola*, P. Taskinen*, and R.H. Eric*^f' was omitted. The paper was published in the SAIMM Journal vol. 118, no. 6, pp. 575-580.

The complete wording for paragraph 4 should read as follows:

'Metallization was observed to start immediately after the chromite was exposed to CH₄-H₂ mixtures, as chromite reduction to metal was observable after only 10 minutes of reduction time. At temperatures of 1300°C and 1350°C, metallization was completed within the duration of the experiments, as only very small amounts of iron and chromium remained in the unreacted zones. Therefore, reduction of Kemi chromite with a CH₄-H₂ mixture can be regarded as highly efficient compared to reduction with only solid carbon as the reductant. Similar levels of almost complete reduction of chromite spinels by ordinary carbothermic reduction require temperatures over 1500°C. This can be attributed to the high thermodynamic activity of carbon when it is provided by cracking of methane into carbon and hydrogen'.

Acknowledgements

The authors are grateful to Tekes and Finland Academy for providing the part-time Finland Distinguished Professor position to R.H. Eric and funds for this research project. The CMEco project and the Technology Industries of Finland Centennial Foundation are acknowledged for their collaboration and support.

The appropriate correction has been made to the copy of the June 2018 Journal on the SAIMM website.