%0 Journal Article %T IMPROVING THE PERFORMANCE OF THE VORTEX COLUMN CONCENTRATION OF SULFURIC ACID %A , .. %A Sabirov, I.M. %A Fazullin, R.H. %A , .. %K SPENT SULFURIC ACID, VORTEX COLUMN, VORTEX CONTACT STAGE, HYDRAULIC RESISTANCE, RELATIVE SPRAY LOSS, HOLDING CAPACITY IN THE LIQUID PHASE %J Herald of Technological University %D 2026 %N 29 %P 4 %I Kazan National Research Technological University