Geology of the platanares geothermal area, Departamento de Copán, Honduras

Heiken, Grant; Ramos, N.; Duffield, Wendell A.; Musgrave, John; Wohletz, Kenneth H.; Priest, S.; Aldrich, James; Flores, Wilmer; Ritchie, A.; Goff, Fraser; Eppler, D. B.; Escobar, Carlos Lenin Benavente

doi:10.1016/0377-0273(91)90021-q

Cited by 26 publications

(2 citation statements)

References 18 publications

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“…Detailed geologic investigations were consequently focussed on these four sites.' Results of these detailed studies are given in Heiken et al (1987), Eppler et al (1987a), Aldrich et al (1987) and Eppler et al (1987b) for Platanares, Azacualpa, San lgnacio and Pavana, respectively. Detailed geochemical work was also done at the four sites and these results are presented in Goff et al (1987Goff et al ( , 1988a.…”

Section: Geothermal Resource Assessmentmentioning

confidence: 99%

Central American Resource Studies

Eeckhout

Laughlin

1995

Energy and Mineral Potential of the Central American-Caribbean Region

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Section: Geothermal Resource Assessmentmentioning

confidence: 99%

Central American Resource Studies

Eeckhout

Laughlin

1995

Energy and Mineral Potential of the Central American-Caribbean Region

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“…The crystal structure of ilmenite is hexagonal that consists of alternating layers of Ti 4+ and Fe 2+ ions. Naturally, the titanium dioxide composition in ilmenite was about 47 wt.% (Heiken et al, 1991).…”

Section: Introductionmentioning

confidence: 99%

The removal of Fe from the reduced ilmenite via aeration leaching; assessing the effect of operating parameters

Ibrahim

Yunus

Ariffin

et al. 2021

Physicochem. Probl. Miner. Process.

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An upgrade of Malaysian ilmenite (FeTiO3) concentrate to synthetic rutile (TiO2) using aeration leaching was investigated in this study. Carbothermal reduction using Sarawak Mukah-Balingan coal and compressed National Gas (CNG) as a reductant was used to produce reduced ilmenite (RI) as an intermediate phase consisting of titanium oxide matrix with metallic iron prior to aeration leaching. Metallic iron was dissolved in ammonium chloride solution after the reduction process, separating synthetic rutile in the leaching residue. This study aims to evaluate the leaching parameters, such as concentration, temperature, and leaching time. The optimum conditions established by the design of the experiment (DOE) and the analysis of variance (ANOVA) has indicated that leaching temperature was the most significant parameter for iron dissolution. It was found that iron dissolution at a maximum value of 97.0% was achieved at an optimum condition of 0.5 M NH4Cl at 90°C for 7 hours. With an initial weight of 46 wt.%TiO2 and 37 wt.% Fe2O3, ilmenite was successfully upgraded to 80 wt.% and 8 wt.%, respectively. In conclusion, Malaysian ilmenite has a high potential value to be upgraded to synthetic rutile by aeration leaching with ammonium chloride via Becher process.

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