A system and method for utilizing waste heat from high-temperature industrial slag grinding

Abstract

The invention discloses a high-temperature industrial slag grinding waste heat utilization system and method. The system includes grinding equipment, a grinding medium storage cylinder, waste heat power generation equipment and an induced draft fan. The grinding equipment and the grinding medium storage cylinder are connected to form a medium circulation loop. The grinding medium storage cylinder, the waste heat power generation equipment and the induced draft fan are sequentially connected to form a waste heat power generation circuit. Thus, after the grinding medium grinds the high-temperature industrial slag and exchanges heat with the industrial slag, it returns to the grinding medium cylinder through the medium circulation circuit, and the air is introduced into the grinding medium cylinder through the waste heat power generation circuit to exchange heat with the grinding medium, thus realizing both The grinding of industrial slag can also utilize the high heat energy of high-temperature industrial slag.

Description

technical field [0001] The invention relates to the technical field of industrial waste slag treatment, in particular to a system and method for utilizing high-temperature industrial slag grinding waste heat. Background technique [0002] In the industrial field, various industrial waste residues are produced in the production process of mining and smelting industries. Most industrial slags have a relatively high temperature when they come out of the furnace, such as boiler slag (700-1000°C), metallurgical slag (1200-1600°C), chemical slag (600-1200°C).  With the rapid development of social economy, industrial waste residues are increasing day by day, which not only puts great pressure on the urban environment, but also limits the development of cities. At present, the three-step method of "cooling + sorting + comprehensive utilization" is usually used to process and utilize industrial high-temperature slag. [0003] The high-temperature industrial slag produced by the fact...

AI Technical Summary

Problems solved by technology

[0012] Existing horizontal mills: 1) The work efficiency is low. According to relevant data, the power consumption of the input power for crushing materials (doing useful work) only accounts for a small part of the overall equipment power consumption, about 5% to 7%. , and most of the electric energy is consumed in other aspects, mainly converted into heat energy and sound energy and disappears, which is a great waste

2) The body is bulky, and the total weight of large-scale can reach more than several hundred tons, so the one-time investment will inevitably be large and the production cost will be high

4) Horizontal installation is not conducive to the flow of materials, and the ground materials cannot be discharged in time, resulting in over-grinding and waste

[0013] Vertical mill: 1) The stirring shaft and impeller (or push rod) are buried in the grinding medium, and the related parts consume a lot

2) The stirring shaft and the rotating blade (or push rod) are buried in the grinding medium, and the resistance to be overcome during the rotating motion increases, which will adversely affect the driving device

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