When determining the construction of a slag grinding plant, first determine the annual output. Different industries have different principles for determining the annual output. Taking a steel mill as an example, the principle for determining the annual output is the output of blast furnace water slag. For example, a steel plant with an annual output of 1 million tons of water slag should build a production line with an annual output of 1.2 million tons. The larger the stand-alone equipment, the higher the output, the lower the corresponding power consumption and heat consumption, the lower the unit consumption of various costs, and the lower the comprehensive cost, which will undoubtedly increase the market competitive advantage and improve the company's economic benefits.
The determination of unit output is directly related to equipment selection. After the annual output is known, the following factors should be fully considered when calculating unit output and equipment selection:
1. The slag vertical mill is not a device that can run continuously for a long time. Every 1500~1800h of operation, it needs to be shut down for repair, usually every repair is 7 days, 35 days a year.
2. For daily maintenance, inspection and maintenance, consider 2 times a month, 0.5 days each time, a total of 12 days a year, and 8 days a year for unplanned (stock full, waiting for materials, waiting for energy, etc.). 55 days of shutdown and 310 days of operation throughout the year.
3. The raw material water slag can be stored in a large amount for a long time, and the slag powder cannot be stored for a long time, and there is no way to store it in a large amount.
Taking the above factors into consideration, the downtime is excluded, the running time is rationally calculated, and the unit output is reasonably determined, and the equipment selection is carried out accordingly.

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