Numerical investigation of breakup process of molten blast furnace slag through air quenching dry granulation technique

Based on the comprehensive experimental test-bed of blast furnace slag waste heat recovery, we study the impacts which are caused by the changes of the key parameters, such as blast furnace slag discharged temperature, the speed of the granulation device, on the particle diameter distribution and sphericity, so as to master the best operating parameters of the blast furnace slag dry granulation, and provide experimental basic materials for blast furnace slag waste heat recovery. The results show that: when the discharged temperature of the blast furnace slag is controlled in 1400°C～1450°C, and the speed of the granulation device is controlled above 2000r/min, the sphericity is better, and 80% of the particle’s diameter will be 2～5mm.

Download Full-text

The effect of size distribution of slag particles obtained in dry granulation on blast furnace slag cement strength

Powder Technology ◽

10.1016/j.powtec.2019.11.115 ◽

2020 ◽

Vol 362 ◽

pp. 32-36 ◽

Cited By ~ 4

Author(s):

Junxiang Liu ◽

Qin Qin ◽

Qingbo Yu

Keyword(s):

Blast Furnace ◽

Size Distribution ◽

Blast Furnace Slag ◽

Slag Cement ◽

Dry Granulation ◽

Cement Strength ◽

Furnace Slag

Download Full-text

Method of Dry Granulation and Solidification of Molten Blast Furnace Slag

Tetsu-to-Hagane ◽

10.2355/tetsutohagane1955.67.7_917 ◽

1981 ◽

Vol 67 (7) ◽

pp. 917-924 ◽

Cited By ~ 11

Author(s):

Mayumi YOSIIINAGA ◽

Koichi FUJI ◽

Tatsuhiko SHIGEMATSU ◽

Tetsuro NAKATA

Keyword(s):

Blast Furnace ◽

Blast Furnace Slag ◽

Dry Granulation ◽

Furnace Slag

Download Full-text

Experimental and numerical investigation of static and fatigue behavior of mortar with blast furnace slag sand as fine aggregates in air and water

Construction and Building Materials ◽

10.1016/j.conbuildmat.2017.03.147 ◽

2017 ◽

Vol 143 ◽

pp. 429-443 ◽

Cited By ~ 9

Author(s):

Muhammad Aboubakar Farooq ◽

Yasuhiko Sato ◽

Toshiki Ayano ◽

Kyoji Niitani

Keyword(s):

Blast Furnace ◽

Numerical Investigation ◽

Blast Furnace Slag ◽

Fatigue Behavior ◽

Fine Aggregates ◽

Furnace Slag

Download Full-text

Numerical simulation analysis of rotary cup centrifugal blast furnace slag

MATEC Web of Conferences ◽

10.1051/matecconf/202235502011 ◽

2022 ◽

Vol 355 ◽

pp. 02011

Author(s):

Mengyuan Yang ◽

Jingfu Wang

Keyword(s):

Numerical Simulation ◽

Blast Furnace ◽

Liquid Film ◽

Blast Furnace Slag ◽

Molten Slag ◽

Rotation Speed ◽

Simulation Analysis ◽

Solid Particles ◽

Dry Granulation ◽

Furnace Slag

In the process of centrifugal dry granulation of blast furnace slag, the thickness of the liquid film at the outlet of the rotor will have a significant impact on the degree of crushing of the slag after leaving the rotor and the size of the solid particles formed. Therefore, this paper uses the VOF method to analyse the flow of molten slag inside the cup. The results have shown that the slag flow has a significant effect on the thickness of the liquid film and the linear relationship is obvious; the thickness of the liquid film decreases with the increase of the diameter of the rotary cup and the rotation speed, and the negative correlation with the diameter of the cup is more obvious; Secondly, as the depth of the cup increases, the thickness of the liquid film decreases first and then increases. The inclination angle of the cup wall has little effect on the thickness of the liquid film.

Download Full-text