Reduction in HF Emission through Improvement in Operational Practices

Devadiga, H.; Banjab, Ali Jassim; AlJallaf, M.; Zarouni, A. Al; Aswad, Kamel Al; Kumar, Arvind; Meintjes, Gregory; Gowda, Sanketh R.; Khan, M.

doi:10.1002/9781118663189.ch130

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Mentioned Reaction Of Forming Hf Is Shown By the Equation (1)1

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2016

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“…(1) [3] High concentrations of hydrogen fluoride generated, leave the cell during the operation of anode replacing and aluminum tapping and thus directly endanger the health of employees.…”

Section: Mentioned Reaction Of Forming Hf Is Shown By the Equation (1)mentioning

confidence: 99%

Vacuum Increase in the Electrolytic Cell With the Aim of Reducing Emissions Into the Work Environment

Vican¹,

Galic²,

Coric³

2016

Proceedings of the 27th International DAAAM Symposium 2016

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In the production of the primary aluminum, waste gases occur as a byproduct in electrolytic cell. Such gases are drained to the Gas Treatment Centre by degassing system where, before discharging into the atmosphere, are purified by adsorbing to the active surface of alumina (Al2O3). Gases enriched alumina is, by pneumatic transportation, returned to electrolytic cell. When performing operations on the cell, such as anode replacing and aluminum tapping from the cells, these gases are emitted into the electrolysis hall, which directly affects the environment and the health of employees. Thus, the purpose of this work is to increase the vacuum in the cells exhaust system in order to reduce emissions into the electrolysis hall during performance of the aforementioned operations, with minimal investment and utilization of existing resources.

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“…(1) [3] High concentrations of hydrogen fluoride generated, leave the cell during the operation of anode replacing and aluminum tapping and thus directly endanger the health of employees.…”

Section: Mentioned Reaction Of Forming Hf Is Shown By the Equation (1)mentioning

confidence: 99%