Blast furnace slag comprehensive power generation wind quenching method

What is blast furnace slag treatment process?

, in the article, the blast furnace slag treatment process is divided into water quenching treatment process and Dry granulation process, while water quenching treatment process and dry treatment process are further subdivided. Figure 1. Blast furnace slag treatment process.

What is blast furnace slag?

Blast furnace slag is a by-product of the iron-making process while producing pig iron. The present research provides an understanding of the two different types of slags of water quenched granulated slag and air-cooled slag that are generated from iron making process through the blast furnace route.

Can blast furnace slag be used in China?

Increase the utilisation of blast furnace slag powder in China ing the turntable, and part of the blast furnace slag sticks to the granulator wall during recovery, result-ing in partial sensible heat waste. At present, although the comprehensive utilis-ation rate of domestic blast furnace slag is more than 80%.

How to recover molten slags from blast furnace?

Molten slags of blast furnace is a second resources with great value of 1600~1 800 MJ sensible heat per ton. At present, water-quenching process plays a leading role in recovering waste heat of the molten slags. However, this method not only cost lots of water, but also recover little sensible heat and can pollute the surrounding environment.

What is the granulation technique for blast furnace slag?

At present, many scholars have studied the gas granulation technique for blast furnace slag. In terms of experimental research, Kang et al. (2019) investigated the granulation performance of blast furnace slag and the formation mechanism of slag particle amorphous phase in combination with the gas granulation experiment of blast furnace slag.

Does blast furnace slag have sensible heat?

As mentioned above, blast furnace slag is rich in high-quality sensible heat and meanwhile, it is available for industrial raw materials. This inspires the researchers to combine the two aspects directly, namely, using the sensible heat in slag to transform itself into high value-added products.