Primary Oxygen Blow

{
  "id": "MLC-T-ENV-022113",
  "term": "Primary Oxygen Blow",
  "field": "Environment",
  "definition": "Period in the steel production cycle of a BOPF during which a high volume of oxygen-rich gas is introduced to the bath of molten iron by means of a lance inserted from the top of the vessel or through tuyeres in the bottom or through the bottom and sides of the vessel. This definition does not include any additional or secondary oxygen blows made after the primary blow or the introduction of nitrogen or other inert gas through tuyeres in the bottom or bottom and sides of the vessel.",
  "references": [
    "40 CFR 60.141 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/primary-oxygen-blow/"
}