Antimony production by carbothermic reduction of stibnite in the presence of lime
Experimental work on the carbothermic reduction of Sb2S3 in the presence of lime was carried out in the temperature range of 973 to 1123 K to produce antimony in an environmentally friendly manner. The results demonstrated the technical feasibility of producing antimony by this method witho...
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| Format: | Article |
| Language: | English |
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University of Belgrade, Technical Faculty, Bor
2014-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391400003P.pdf |
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| author | Padilla R. Chambi L.C. Ruiz M.C. |
| author_facet | Padilla R. Chambi L.C. Ruiz M.C. |
| author_sort | Padilla R. |
| collection | DOAJ |
| description | Experimental work on the carbothermic reduction of Sb2S3 in the presence of
lime was carried out in the temperature range of 973 to 1123 K to produce
antimony in an environmentally friendly manner. The results demonstrated the
technical feasibility of producing antimony by this method without producing
SO2 gas. Complete conversion of Sb2S3 was obtained at 1023 K in about 1000
seconds and at 1123 K in less than 250 seconds using stibnite-carbon-lime
mixtures with molar ratios Sb2S3:CaO:C = 1:3:3. It was found that the
reduction proceeds through the formation of an intermediate oxide SbO2, which
is subsequently reduced by CO(g) to yield antimony metal and CaS. The
kinetics of the Sb2S3 reduction was analyzed by using the equation ln(1-X) =
-kt. The activation energy was 233 kJ mol-1 in the temperature range of 973
to 1123 K. This value would correspond to an antimony catalyzed carbon
oxidation by CO2. |
| format | Article |
| id | doaj-art-7f0f8801f20d460f907d8891d4eaab36 |
| institution | Kabale University |
| issn | 1450-5339 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-7f0f8801f20d460f907d8891d4eaab362025-02-03T01:54:31ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392014-01-0150151310.2298/JMMB130604003P1450-53391400003PAntimony production by carbothermic reduction of stibnite in the presence of limePadilla R.0Chambi L.C.1Ruiz M.C.2University of Concepcion, Department of Metallurgical Engineering, Concepción, ChileUniversidad Mayor de San Andres, Department of Metallurgical and Materials Engineering, La Paz, BoliviaUniversity of Concepcion, Department of Metallurgical Engineering, Concepción, ChileExperimental work on the carbothermic reduction of Sb2S3 in the presence of lime was carried out in the temperature range of 973 to 1123 K to produce antimony in an environmentally friendly manner. The results demonstrated the technical feasibility of producing antimony by this method without producing SO2 gas. Complete conversion of Sb2S3 was obtained at 1023 K in about 1000 seconds and at 1123 K in less than 250 seconds using stibnite-carbon-lime mixtures with molar ratios Sb2S3:CaO:C = 1:3:3. It was found that the reduction proceeds through the formation of an intermediate oxide SbO2, which is subsequently reduced by CO(g) to yield antimony metal and CaS. The kinetics of the Sb2S3 reduction was analyzed by using the equation ln(1-X) = -kt. The activation energy was 233 kJ mol-1 in the temperature range of 973 to 1123 K. This value would correspond to an antimony catalyzed carbon oxidation by CO2.http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391400003P.pdfantimony sulfidestibnitecarbothermic reductiondirect reduction |
| spellingShingle | Padilla R. Chambi L.C. Ruiz M.C. Antimony production by carbothermic reduction of stibnite in the presence of lime Journal of Mining and Metallurgy. Section B: Metallurgy antimony sulfide stibnite carbothermic reduction direct reduction |
| title | Antimony production by carbothermic reduction of stibnite in the presence of lime |
| title_full | Antimony production by carbothermic reduction of stibnite in the presence of lime |
| title_fullStr | Antimony production by carbothermic reduction of stibnite in the presence of lime |
| title_full_unstemmed | Antimony production by carbothermic reduction of stibnite in the presence of lime |
| title_short | Antimony production by carbothermic reduction of stibnite in the presence of lime |
| title_sort | antimony production by carbothermic reduction of stibnite in the presence of lime |
| topic | antimony sulfide stibnite carbothermic reduction direct reduction |
| url | http://www.doiserbia.nb.rs/img/doi/1450-5339/2014/1450-53391400003P.pdf |
| work_keys_str_mv | AT padillar antimonyproductionbycarbothermicreductionofstibniteinthepresenceoflime AT chambilc antimonyproductionbycarbothermicreductionofstibniteinthepresenceoflime AT ruizmc antimonyproductionbycarbothermicreductionofstibniteinthepresenceoflime |