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Why does the KIVCET process use commercially pure oxygen?
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lead processing
A zinc-lead blast furnace and lead-splash condenser. This technology is utilized mainly for producing zinc while managing both lead and zinc from raw materials, a technique that was highly influential in 20th-century smelting.
The KIVCET process uses commercially pure oxygen to facilitate the autogenous (fuel-less) flash smelting of raw materials.1
In this process, lead-bearing materials and fluxes are injected into the reaction shaft, where they are ignited by a blast of commercially pure oxygen. This reaction triggers the oxidation of the concentrated sulfide ore, which generates sufficient heat to raise the temperature to 1,300–1,400 °C (2,375–2,550 °F). This high temperature is essential to reduce the oxidized materials into metal. By using pure oxygen rather than air, the process achieves the intensive heat required for this reaction without the need for additional fuel.1