The ladle covering agent is used to cover the surface of molten steel and molten iron for heat preservation, with good spreading and covering, excellent heat preservation, which can adjust the slag on the liquid surface, reduce heat loss, prevent thermal radiation and secondary oxidation of molten steel. Cool down 0.5-1 degree per minute. Reduce the cooling rate by 20-40% and increase the temperature by 20-40 ℃. It can prolong the service life of ladle and iron ladle, eat more scrap steel and desulfurize quickly. Solve the tank ridge to facilitate storage and transportation. The utility model is simple and convenient to use, reduces labor intensity, improves labor conditions, and improves the overall comprehensive economic benefits of the enterprise.
1. Physical properties:

Name: moisture content (%), particle size (mm), carbon content (%), melting point (℃), melting rate (s)

NGBF-K 0.5~1.2 0.3~4 10~25 1180~1400 65~150

Ngbf-f is less than 0.75 0.1 ~ 2 10 ~ 20 1180 ~ 1400 65 ~ 150

2. Chemical composition: (wt%)

Name SiO Cao Al2O3 Fe2O3 MgO remarks

Ngbf-k 35 ~ 48 8 ~ 25 8 ~ 15 0.5 ~ 4 0.3 ~ 5 granular

Ngbf-f 35 ~ 48 8 ~ 25 8 ~ 14 0.5 ~ 4 0.3 ~ 5 powder

NGBF-F 35~48 8~25 8~14 0.5~4 0.3~5 粉 状