James MacTearFCS, FIC (3 April 1845-3 June 1903) was a Scottish chemical engineer[1] who became a partner and the technical manager of the St Rollox Chemical Works in Glasgow. Mactear was known for inventing a rotating furnace that was used for the continuous manufacturing of sodium sulfate.[2] He influenced the technical development of the chamber process for making sulphuric acid.[3] In 1871, MacTear, created a chemical process to recover sulphur from the alkali waste piles behind the factory at St Rollox.[4] In 1879, MacTear was the first to discover the process to make artificial diamonds.[5] In 1884, MacTear left Glasgow for London becoming a specialist in the metals and metallurgy of mercury and gold.
^"Obituary. James Mactear, 1845-1903". Minutes of the Proceedings of the Institution of Civil Engineers. 154 (1903): 378–379. January 1903. doi:10.1680/imotp.1903.18039.
^Mactear, James (19 November 1880). "A new mechanical furnace, and a continuous system of manufacturing sulphate of soda". Journal of the Society of Arts. 29: 178.
^Russell, Colin Archibald; Britain), Royal Society of Chemistry (Great (2000). Chemistry, Society and Environment: A New History of the British Chemical Industry. Royal Society of Chemistry. p. 82. ISBN 978-0-85404-599-0.
^Reed, Peter (23 March 2016). Acid Rain and the Rise of the Environmental Chemist in Nineteenth-Century Britain: The Life and Work of Robert Angus Smith. Science, technology, and culture, 1700-1945 (1st ed.). London: Routledge. p. 148. ISBN 978-1-317-18582-6.
^"Unpublished letter, 'Artifically [sic] formed diamonds' from James Mactear to the Secretary of the Royal Society". The Royal Society. London: The Royal Society Archives. 14 December 1879. Retrieved 2 November 2023.
into alkali manufacture. Mactear, James (1879). On the antiquity of the chemical art. Londres. OCLC 763913647. MacTear, James (1872). "Technical chemistry...
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