Screens, gates and skip with edge mill

The equipment for blast furnace No. 8, which was overhauled by specialists from the Casting and Mechanical Plant, is performing its functions properly.

The workers of the steel structures shop and repair and assembly shop No. 3 overhauled the coke and agglomerate screens, the skip for transporting the charge, manufactured four coke gates and the same number of agglomerate gates. Some work within the framework of these repairs was carried out by the workers of MRS-1 and MRS-2.

The coke and agglomerate screens are used to sort these materials before manufacturing the charge for smelting cast iron. The boxes for them were made of bimetal, that is, steel, welded with a hard wear-resistant alloy. Such material helps to withstand mechanical wear of these products and high temperatures. The surfacing of steel sheets for screens and other products was performed at MRS-3. Then they were taken to the Steel Structure Shop and cut into the necessary parts there. As Nikolay Gritsan, the head of the Steel Structure Shop, explained, plasma cutting and thermal cutting machines were used to cut the bimetal.

The screens and gates were assembled by MRS-3 workers. As Andrey Karaman, the head of this shop, explained, the screens mainly used bolted connections. This allows them to withstand enormous loads when sifting materials.

A skip is a complex product. In fact, it is a railway carriage that is pulled to the top of BF-8 by rails. It has a so-called harness, which it hooks onto. The harness also participates in unloading the charge into the furnace charging device, which was also manufactured by our plant. The harness was manufactured at MRS-3, but the mechanical processing of the skip body was performed at MRS-2. The skip has wheels called runners. They are made of steel that is stronger than that of ordinary railway wheels, so the blanks for the runners had to be purchased, but the blanks for the axles were forged at the forge section of MRS-1. They were processed and received ready-made spare parts by the workers of MRS-3.