Dongxing Aluminum Industry: "expert consultation" to "open the pulse" for the electrolytic cell

"how to achieve the best operation state of the all-graphitized cathode electrolytic cell? How to advance the alignment table to the industry and solidify the results in time, continuously improve the implementation plan of the alignment table work, and refine the responsibility decomposition? "

According to statistics, all-graphitized cathode electrolytic cells account for 29% of the total number of running cells. According to the advantages of low resistivity and low furnace bottom pressure drop in the production process, how to track the progress in the production process in real time? We still need to further sum up our experience and implement the reform. "

Recently, Jiuquan Group Dongxing Aluminum Co., Ltd. Jiayuguan electrolytic production area of the first, third and fourth operation area of more than 10 "experts", led by Wang Xiaokang, secretary of the party branch of the fourth operation area of electrolysis, formed an "expert consultation" team to diagnose the Jiayuguan 500kA electrolytic cell step by step and comprehensively on the spot.

The technical backbone of each operation area participating in the on-site technical exchange focused on the actual operation of all the electrolytic cells, cut into the in-depth analysis of the various problems in the actual production, and carried out four stages of "consultation" for the efficient production of the electrolytic cell. cell condition research and judgment, data analysis, formulation of measures, calibration and table.

Have both individuality and generality

"for nearly half a month, through the inspection and comparison of the on-site operation and operating parameters of the all-graphitized cathode electrolytic cell in each operation area, the technical conditions have been greatly improved compared with the previous month, and the electrolyte activity has been significantly enhanced. The color of the flame is developing in a positive direction, the number of shell packages is gradually reduced, the material circulation tends to be balanced, and the thickness of insulation material is reasonable." At the technical exchange meeting, the head of the company's technical research and development department gave a detailed briefing on the specific issues in the exchange.

In the whole process of communicating with each other in the three electrolysis operation areas, the backbone of electrolysis technology put forward more than 10 problems, such as electrolyte composition of electrolytic cell. The improvement measures are defined in the field for five common problems, such as the electrolyte composition needs to be further optimized, the molecular ratio needs to be gradually reduced, and a good furnace side is formed to achieve a better heat preservation effect. The remaining three personality problems will continue to follow up in the production process of each electrolysis operation area, and the two problems need to be realized by improving the level of fine operation in the process of start-up and operation in the future, and there is no better way to solve them for the time being. "all problems found in the recent exchange of on-site experience, solved on the spot or further promoted in the later stage, will be reported in writing in the future." Zhang Jinsuo, the company's deputy general manager in charge of production, made a request at the technical exchange meeting.

Give full play to the advantages of all-graphitized electrolytic cell

The purpose of this "expert consultation" is to learn from each other and learn from each other. The company's technical personnel and electrolysis technical backbone learn from the practices and experiences of characteristic enterprises in the industry in cathode full graphitization energy-saving transformation, electrolytic cell long-cycle production management, electrolytic production technical index optimization, etc. for the next step of the company to carry out in-depth calibration table work clear direction, lay the foundation. The purpose of this paper is to find the space and basis for the long-period stable and efficient operation of the company's 500kA all-graphitized cathode electrolytic cell and the follow-up index optimization. The first is to discuss the start-up quality and technical conditions management specification of 500kA all-graphitized cathode electrolytic cell, and the second is to discuss the corresponding relationship between the process and technical conditions of the electrolytic cell and the performance of the cell, so as to clarify the standard of "excellent cell" and improve the level of on-site management. Third, through the exchange of experience, on-site mutual learning, electrolysis district managers express their own views, fully mobilize the enthusiasm and initiative of the first level of the work area, and improve the professional management ability; fourth, the standard alignment table to further optimize the company's electrolytic cell operation technical conditions, especially the cathode graphitization transformation of the operating conditions of the electrolytic cell, give full play to the cathode graphitization transformation of the electrolytic cell long life, low energy consumption efficiency.

It is reported that the expert diagnosis is problem-oriented, and combined with the actual situation of each electrolytic production, it adopts the way of asking and answering on the spot, carries out "physical examination" and "consultation" on the operation status of the electrolytic cell, and extensively collects and understands the problems encountered in the production of the electrolytic cell. a personalized "prescription" is prescribed for the discharge of the electrolytic cell on the production site.

Statistics show that since the operation of the all-graphitized electrolytic cell, the AC unit consumption ring ratio of the all-graphitized electrolytic cell in each operation area has shown a decreasing trend in varying degrees, and the efficiency has shown a continuous trend of development. There is a stronger atmosphere of "comparison, learning, catching up and surpassing" between the work areas and between the work areas. In each electrolysis operation area, the understanding of the electrolytic cell, especially the all-graphitized cathode electrolytic cell, is more unified, and the cell condition is obviously optimized through the rectification of process and technical conditions and the optimization of electrolyte composition.

In the next step, the company will continue to be advanced in the industry, gain a foothold in the long term, improve the management level, continue to make good use of the method of "expert consultation", increase the innovation and development in electrolytic cell management, and adhere to the concept of "supplemented by on-site experience observation and judgment. Big data systematic analysis and research-based" concept, through the establishment of a strong technical team to support the effective operation of the technical system, and promote the high-quality development of Dongxing Aluminum Industry.