The Daye Non-ferrous Metallurgical Smelter's Imported Equipment Localized
In recent years, the plant has introduced a large number of imported equipment and accessories to optimize the production process. However, there are shortcomings such as long procurement periods for equipment and accessories, high prices, and difficulties in ensuring after-sales services. In particular, if some imported equipment manufacturers switch or stop production, Equipment and accessories are difficult to supply, seriously threatening the safe and stable operation of the equipment. To this end, the factory actively organized employees to carry out technological innovation activities, give full play to the role of technical research group, boldly to the imported equipment and imported accessories to carry out technical problems, so that many imported equipment and accessories made in China.
The plant's sulphuric acid four-system purification system has seven sets of dilute acid pumps. We have been using imported Welman pumps from Australia since 2004. The price for a single unit is 800,000 yuan, and the annual maintenance and repair cost is up to 100,000 yuan. The single pump price is only 260,000 yuan, and the total annual maintenance cost does not exceed 50,000 yuan. For the cost difference between imported pumps and domestic pumps, the plant set up a technical research group to conduct research on the problems of equipment localization. Under the premise that the technical parameters such as flow rate and pressure are basically the same as those of imported pumps, through the establishment of data analysis system, combined with the purification system process flow charts, etc., various technical parameters are accurately calculated and verified, and domestic pumps are enabled. At present, the pump is in the trial operation stage, and all the production process conditions are stable and in a good controlled state.
At the same time, the factory also tackles the problem of localization of accessories. The flue gas from the depleted furnace was cooled through 12 inlet spray guns on the flue and entered the electric dust collection system. The cost of an imported spray gun is 35,000 yuan, and the service life is only about one month. In order to save costs, the plant's technical research group, based on the material density and without special drawings and parameters, uses a special machine tool to make a set of mold samples of equivalent size according to the shape and size, and after 30 times of grinding and debugging. More than two months of research, developed a new spray gun. The new spray gun not only extends the service life to 3 months, but also has a good cooling effect, and the cost is only 11,000 yuan. It is estimated that the development of a new spray gun can save 500,000 yuan per year for the plant.
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