Heat insulating lids are intended for decreasing heat losses and gas emission from ladles in the course of their transportation and teeming of metal. Heat insulating lids consist of ribbed metal casings, lined with light fibred refractory materials. The use of insulating lids provides 1,1-1,4 time decrease in metal melt cooling rate (what is particularly important for continuous casting process) and corresponding reduction of specific through energy consumption for production of final metal products. Simultaneously the 10-15 % increase of ladle lining service life is achieved thanks  to decrease in temperature fluctuations and gradients on the working surface of lining.