Qingdao Special Steel's Production Practice of Blast Furnace Low Silicon Smelting
WANG Shida
WANG Zhenguo
Abstract：To meet the low-silicon smelting requirements of blast furnaces at Qingdao Special Steel,measures such as optimizing raw material and fuel management(coking coal M40≥85%,CSR≥65%),operating systems(oxygen enrichment rate≥3.5%,slag basicity 1.18～1.23),thermodynamic regulation(physical heat≥1 500℃),and equipment modification were implemented.As a result,the silicon content in molten iron was reduced from 0.433%to 0.415%,achieving the goal of reducing fuel consumption and lowering the cost per ton of iron,directly creating an annual benefit of 9.96 million Yuan.
Keywords：blast furnacelow silicon smeltingraw material managementcost reduction and efficiency
Publication Date：2025-06-20
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：2( 55-56 )