ELECTROLYZER FOR PRODUCING MAGNESIUM AND CHLORINE AND METHOD OF MOUNTING THEREOF Russian patent published in 1997 - IPC

FIELD: electrochemical processes. SUBSTANCE: lining under lower face of contact head of electrolyzer is made of metal layer containing aluminium oxide and its mixture with silicon oxide and insulation material layer. Manufacturing lower face with transverse channels and/or at an angle to horizon eliminates formation of gas cavities and speeds up removal of liquid phase during drying. Novelty is two-step pouring of suspension containing 50-95% alumina and 0.1-50% silica in 2-5% inorganic acid (hydrochloric, nitric or phosphoric acid) at solids to liquid ratio (5-6):1 and pH 3-4 with thermal aging for 1-30 h to residual moisture content 1-20% at 20-99 C. EFFECT: increased fluidity of suspension, filled all leakages, and provided required heat resistance of corresponding bottom region. 10 cl, 2 dwg