法律、法规、国务院决定规定禁止的不得经营；法律、法规、国务院决定规定应当许可（审批）的，经审批机关批准后凭许可（审批）文件经营;法律、法规、国务院决定规定无需许可（审批）的，市场主体自主选择经营。（有色轻金属铝、镁、钛冶炼以及配套碳素、氟化盐工艺技术研究；工程规划、设计、咨询、监理、总承包业务；市政工程与民用建筑工程的规划、设计、咨询、监理、总承包业务；建设工程相应环境评价、工程概算和预算编制、工程测量、化验试验、程序编制、翻译业务；相应机械设备成套、相应系统集成业务；物业管理；餐饮服务。（依法须经批准的项目，经相关部门批准后方可开展经营活动）。）
To achieve accurate control of alumina concentration in aluminum electrolysis process, an adaptively predictive control method of recursive subspace for alumina concentration was proposed based on subspace identification and model predictive control technology. First, the recursive subspace algorithm with forgetting factor was used to establish an online prediction model of alumina concentration, which could adaptively predict the alumina concentration according to the change of working conditions. Then, the established model was applied to predictive control to achieve adaptive control of alumina concentration. Finally, based on the actual production data of an aluminum plant, experimental research was carried out to verify the effectiveness and superiority of the proposed control method for precise control of alumina concentration.
