Liquid slag granulation equipment and drive device with lifting function

Abstract

The invention discloses granulating equipment with a lifting function and a drive device. The granulating equipment comprises a granulating device, a granulating device fixing device, a granulating device driving device and a granulating equipment lifting device. The granulating device is in a disc or cup shape, the edge dip angle is 30-60 degrees, a flow guiding cone is arranged in the center, and the granulating device is fixed to the granulating device fixing device. The interior of the granulating device fixing device is provided with an airflow channel, and the bottom, making contact withthe granulating device, of the granulating device fixing device is provided with an expanded heated face; a plurality of air ports are formed in the top of the granulating device fixing device, and the granulating device driving device is used for driving the granulating device to rotate; air cooling or water cooling or oil cooling is adopted for rotation shaft cooling; and the granulating equipment lifting device is used for adjusting the height of the granulating device. By means of the granulating equipment and the drive device, the work temperature of a motor, a rotation shaft and the granulating device fixing device can be reduced, long-time normal running of the granulating equipment and the drive device is guaranteed, granulating device driving safety and stability are guaranteed,the granulating effect can be better achieved, meanwhile, granulating equipment replacement is more convenient and rapid, and the granulating efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of waste heat recovery of high-temperature liquid slag, in particular to a granulation equipment and a driving device with a lifting function. [0002] technical background [0003] At present, China is the world's largest steel producer, and its steel output ranks first in the world. In 2015, China's pig iron production reached 691 million tons, accounting for about 60% of the world's total production. In October 2016, China's pig iron production was 586 million tons, accounting for about 60% of the world's total production. In the process of smelting pig iron, blast furnace slag containing huge heat will be produced. The temperature of blast furnace slag is generally between 1400 ~ 1550 °C, and each ton of slag contains (1260 ~ 1880) × 10 3 The sensible heat of kJ is equivalent to 60kg standard coal. Under the existing ironmaking technology in my country, 0.3 tons of blast furnace slag is produced as a b...

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Problems solved by technology

However, since the temperature of the liquid blast furnace slag is above 1350°C, the heat of the blast furnace slag is transferred from the granulator to the tray and then to the rotating shaft. It affects the granulation effect of the driven granulator. At the same time, the continuous operation of the motor will also cause the temperature to rise, which will easily cause motor failure and shorten the life. In addition, due to structural reasons, the shaft will shake back and forth when rotating. It affects the granulation effect of the granulator. When the granulation system breaks down and needs to be repaired, or the granulator needs to be replaced, the fixed granulation equipment is very inconvenient.

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