According to relevant media reports, on December 22, 2006, the Shandong Aluminum Alumina Alumina Optimized Energy-saving Renovation Project - High-efficiency Phase II settler was put into operation on schedule. The one-year sinter process alumina optimization energy-saving renovation project has achieved a complete victory, thus providing a guarantee for expanding the development space of sintering alumina. Sintering Alumina Optimized energy-saving retrofit project is a technological upgrading project with the largest number of subprojects, the shortest construction period, and the best expected results. Including the new line No. 1 wet grinding, soft water circulation system, semen leaf filtration process, seed and seed filtration, atmospheric pressure desiliconization system, red mud washing transport, new 20 meters of hydrogen aluminum settlement tanks and other nine sub-items. Since the commencement of construction, Shandong aluminum enterprise planning department, supervision company, construction unit and alumina plant have worked together to implement the whole process control from the design, demonstration, implementation and investment of the project, which has provided guarantee for the project's scheduled operation. After entering the second half of 2006, with the emergence of energy-saving and consumption-decreasing booms, the sintering energy-saving alumina optimization project has gradually entered the commissioning stage. In order to ensure the success of the project's first feed, the alumina plant set up a commissioning team for commissioning, closely cooperated with the relevant units, supervised the installation progress in an all-round manner, and timely dealt with the problems arising during the installation and commissioning process. After the first five days of intense water testing, the high-efficiency second-stage sedimentation tank has been put into operation. The project to be put into operation consists of six sets of 15,000×6983mm sedimentation tanks with an investment of more than 30 million yuan, which is based on the first phase of high efficiency. After being absorbed and improved by the scientific research personnel, it improves the operation cycle of the system, reduces the operating cost, and optimizes the process. Indicators have a great role in promoting. With the gradual integration of the process, efficient washing and settling tanks were formally incorporated into the production process.