ELECTROLYTIC CELL AND METHOD FOR PRODUCTION OF MAGNESIUM AND CHLORINE Russian patent published in 2004 - IPC

FIELD: electrolytic magnesium and chlorine manufacturing from MgCl₂ containing fused salt.

SUBSTANCE: method includes maintaining of chlorine bubble-filled electrolyte in interelectrode gap to provide closed electrolyte circulation between electrolytic cell and cell for magnesium separation and to prevent electrolyte downstream in interelectrode gap; as well as providing of electrolyte and magnesium stream over cathodes, directed to top circulating channels. Velocity of electrolyte and magnesium stream over cathodes is controlled by changing of top circulating channel high in dependence of mean interelectrode distance. Gas-filling of electrolyte is maintained at 6-25 arbitrary units determined according to specific equation. Electrolysis is carried out providing increased interelectrode gap cross-section in direction of electrolyte upstream. Electrolytic cell contains electrolytic chamber with alternate anodes and cathodes and cell for magnesium separation, isolated from electrolytic chamber by divider with top and bottom circulation channels. Ratio of cathode high/interelectrode gap width is 25-60; and inclination of cathode ore anode working surface to vertical is 38'-1⁰26'.

EFFECT: reduced energy consumption, increased current strength and capability of electrolytic cell.

3 cl, 3 dwg, 1 ex