Expect to build up a process control strategy inside cell furnace hearth shape after overcoming to thin electrolysis slot and starting related improvement and implement result.

Discussion on sectional mining,technical feasibility and economic rationality of steep side expansion of Guangou quarry is made and some issues to be noted are proposed due to the problems existing in the design and mining of the quarry,such as large stripping volume in the initial mining stage and voriation in stripping ratio during mining.