Water granulated slag pre-drying device and pre-drying treatment method

Abstract

The invention discloses a water granulated slag pre-drying device and a pre-drying treatment method. The water granulated slag pre-drying device comprises a drying mechanism, a conveying belt used for conveying materials and heat exchange equipment used for supplying hot air are arranged at one end of the drying mechanism, a waste gas tower is arranged at a waste gas exhaust outlet of the heat exchange equipment, the drying mechanism comprises a drying pipeline and a base, a feeding hopper is arranged at a feeding port of the drying pipeline, a circular rail and a gear ring are arranged on the outer circumferential wall of the drying pipeline, fins are arranged on the inner circumferential wall of the drying pipeline, a rolling shaft is arranged at the bottom end of the circular rail, a worm is arranged at the bottom end of the gear ring, and a motor is arranged at one end of the worm. The water granulated slag pre-drying device is novel in structure, the problem that the drying cost is high due to the fact that the water content of water granulated slag in existing water granulated slag grinding production is large is effectively solved, the pre-drying process is simple and practical, conveying and drying are achieved at the same time, efficiency is high, and automatic production is achieved.

Description

technical field [0001] The invention relates to the field of pre-drying devices, in particular to a water slag pre-drying device and a pre-drying treatment method. Background technique [0002] Water slag refers to the high-temperature slag produced during ironmaking. After rapid cooling by water, it forms a porous structure. It has the characteristics of light weight and easy crushing. After processing, it can be used as building materials or landfill materials. Due to the formation characteristics of water slag, It makes its pores contain a lot of water, and the water in it needs to be dried in the water slag grinding process. According to the heat of vaporization of water at 100°C is 2.26×106J / kg, every 1% increase in water content is used for drying Dry gas consumption per ton needs to be increased by 1000kg×1%×2.26×106J / kg=2.26×107J=0.0226GJ, so a large amount of energy is consumed and the cost of water slag grinding remains high. Therefore, in order to solve the above ...

AI Technical Summary

Problems solved by technology

[0003] The invention proposes a water slag pre-drying device and a pre-drying treatment method, which solves the problem of high drying cost caused by the high water content of water slag in the existing water slag grinding production

Images