The results shows that t he shell height were reached 64.

0%, shell height 31.

Test and analysis of N0.2 BF shell at Baogang;

Application of electroslag welding in welding of 5~# ,6~# blast furnace shell;

Extracting dyestuff from hull of sorghum, studying its dyeing properties and experiment of dyeing wool silk and cotton with it is concerned in this paper, the conclusion is as follows, with the increasing of pH, the color of dye solution becomes dark, the dyestuff may woolsilk directly under acid conditions, the fastness of is up to 4 Ievel and the color of wool and silk becomes dark.

The structural stability of shell of blast furnace was studied,and the simple method of estimating the critical force by Walimier formula was propose,by which the critical load in the stalk direction was calculated for No.