Research and Popularization of Rapid Flotation Process in Dexing Copper Mine
In early 2000, Jiangxi Copper Industry Company filed within three years will increase the Dexing Copper Mine copper concentrate grade from the current 24 per cent to 26 to 28% of the requirements, according to Dexing Copper years of experimental research and production practice, existing processes The process further increases the space for the copper concentrate grade. To achieve the company's goals, the process must be improved. To this end, Dexing Copper Mine and the Beijing Research Institute of Mining and Metallurgy jointly carried out a new process research aimed at improving the concentrate grade and associated element recovery rate. In 2000, based on the nature and process status of Dexing Copper Mine, Beijing Mining and Metallurgical Research Institute proposed a rapid flotation process based on sufficient experimental research. The basic idea of ​​the process is to recover copper and other useful in two steps. Minerals, on the basis of rapid recovery of monomeric copper minerals and copper-rich continuous organisms, strengthen the recovery of copper-depleted continuum and other useful minerals, and achieve the purpose of improving the beneficiation index of copper and associated elements. After the proposal of the rapid flotation process, it was highly valued by the Dashan Concentrator and the application research of the new process was carried out in the Dashan Concentrator. Second, the activity overview 1. In October 2000, Dashan Concentrator, on the basis of conscientiously comprehending the spirit of the new process, combined with the actual production situation of the Dashan Concentrator, carried out a small experiment of rapid flotation new process and explored the feasibility of applying the new process to the Dashan plant. According to the results of small-scale exploration experiments, combined with the characteristics of the Dashan plant process and equipment configuration, the industrial test plan for the rapid selection of coarse flotation concentrates was developed, and the pharmaceutical system, operation essentials and contingency measures of the new process were explored in the laboratory. 2. In June 2001, the Dashan Concentrator carried out a one-month industrial test. Industrial trials show the superiority of the process: copper recovery is increased by 0.31%, molybdenum recovery is increased by 35.99%, and copper concentrate copper grade is increased by 2.2%. 3. From July to August 2001, the process of rapid flotation process was reformed and put into production at the end of August. In the early stage of the promotion and application of new technology, Dashan Concentrator carried out the improvement of new technology for the problems of industrial testing and promotion of pre-exposure. (1) Adjust the two-stage process conditions and the structure of the copper-sulfur separation operation process. The grade of the two-step copper concentrate has been steadily increased from the original 18% to over 20%. The recovery rate of selected segments was stable at 98% from the original 97.5%. (2) Formulate operational standards for implementing fast flotation processes. In February 2002, on the basis of full discussion and solicitation of opinions from field personnel, the operation standard of fast flotation process was formulated. The standard made clear the flotation level, air volume, lime addition, chemical conditions and operation control of each operation. specification. From March 1st, the operation standard of rapid flotation process was officially implemented, which reversed the passive situation in which the previous operation methods were not uniform and the operations were uncoordinated. (3) Try the pusher board and gradually promote the application. From the application of the pusher plate, the pusher plate can speed up the bubble generation, alleviate the problem of insufficient flotation time, help to improve the recovery rate, and plan to gradually promote the application. (4) Applied research of new drugs. The problem is that the AP drug collection capacity is not strong enough (especially for the secondary copper recovery), and the ore selectivity is poor, which has a great impact on the recovery rate. Cooperated with Central South University to carry out the “Research on New Chemicals for Copper Concentrate Grade in Dashan Concentratorâ€. The new collector CSU-A was developed for rapid flotation process and cooperated with Beijing Mining and Metallurgy Institute to improve AP pharmacy. In April 2002, the CSU-A agent and the improved AP agent were compared with the industrial test. The test results showed that the performance of CSU-A agent and improved AP agent was much better than that of the original AP, which could meet the improvement of copper concentrate grade. The need for a period of recovery. During the industrial application in June 2002, it obtained the index of 26.02% concentrate grade and 87.9% copper recovery rate, which was the best level in history. The index of copper concentrate grade was 25.30% and the copper recovery rate was 86.90% from January to August this year. . (5) It is proposed to select the flotation column for the selected operation instead of the selected 8m3 flotation machine for the second section, to improve the separation accuracy of the second stage copper and sulfur, and to ensure the quality of the two-step copper concentrate is more than 24%. The program is being implemented and will be officially put into production in October 2002. Third, the results of the event Since the rapid flotation process was promoted and applied in September 2001, the technical and economic indicators have been significantly improved: copper concentrate grade, copper recovery rate and molybdenum recovery rate have increased by 0.53%, 0.43%, 18.06%, and lime unit consumption has decreased by 1.55kg/ t, creating economic benefits of 25.74 million yuan. With the gradual improvement of the rapid flotation process, the superiority of the new process will be fully reflected. Project implementation unit: Dexing Copper Mine Dashan Concentrator The main participants of the project: 1. Zhang Dongsong 2. He Qinglang 3. Zhang Honghua 4. Yu Wei 5. Lan Xixiong 6. Wang Zhongwei 7. Zheng Xingguo 8. Zhang Xingchang Disperse Dyes Printing Thickener
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