{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T03:33:39Z","timestamp":1773804819664,"version":"3.50.1"},"reference-count":10,"publisher":"IOP Publishing","issue":"1","license":[{"start":{"date-parts":[[2020,3,1]],"date-time":"2020-03-01T00:00:00Z","timestamp":1583020800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/3.0\/"},{"start":{"date-parts":[[2020,3,1]],"date-time":"2020-03-01T00:00:00Z","timestamp":1583020800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["IOP Conf. Ser.: Earth Environ. Sci."],"published-print":{"date-parts":[[2020,3,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Lampung Province has many manganese ore resources that have not been fully utilized. According to Indonesian Minister of Energy and Mineral Resources regulation no. 5 of 2017, manganese ore is prohibited from being exported before the ore is processed into a concentrate with 49% manganese content. The type of mineral contained in manganese ore used in this experiment is pyrolusite (MnO2). The method used to improve the Mn content used in this experiment is to reduce roasting. The reducing agent in this experiment is 25% palm kernel. The roasting process is carried out at 1000 \u00b0C, 1100 \u00b0C and 1200 \u00b0C. Meanwhile, the holding time varies from 30 to 150 minutes. The results obtained from baking are characterized using XRF to determine the final product content. XRD and SEM-EDS are used for the result identification phase. The highest content of manganese was 41.28% by weight obtained after baked at 1100 \u00b0C for 120 minutes with the formed phase being Mn<jats:sub>2<\/jats:sub>SiO<jats:sub>4<\/jats:sub>.<\/jats:p>","DOI":"10.1088\/1755-1315\/483\/1\/012012","type":"journal-article","created":{"date-parts":[[2020,6,13]],"date-time":"2020-06-13T00:13:58Z","timestamp":1592007238000},"page":"012012","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["Analysis of the effect of temperature on the reduction roasting process of Lampung manganese ore using palm kernel shell 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