Paper of Revamping of EAF Dedusting Plant to Optimize Off-Gas & Dust Control System

by Rio Arosyid Putra, Syafiq Hadi

Publisher - Division of Technology & Energy Development. PT Krakatau Steel (Persero) Tbk. Cigading Plant Site

Category - Engineering & IT

PT Krakatau Steel (Persero) Tbk is currently building Blast Furnace Plant which produces hot metal to be fed into Electric Arc Furnace (EAF) and it will reduce the composition of solid material. The use of hot metal will impact to the operation of Dedusting Plant since it was designed only to process EAF off-gas (sponge iron based operation). This paper describes about revamping project of EAF Dedusting Plant which was finished under self-management of PT Krakatau Steel (Persero) Tbk including basic and detail design, manufacturing, procurement, installation and commissioning. The water cooled duct was reconditioned and extended to increase Dedusting Plant capability to absorb heat from larger volume of off-gas. In addition, Drop Out Box (DOB) was also installed to isolate larger duct particles and therefore it will minimize dust settlement in the duct. The results of this project were not only successful to modify optimized off-gas & dust control, but also significantly reduce the capital expenditure by 35% and also accelerate the project duration so that it can be finished in 18 months due to the efficiency and effectivity of the teams effort during engineering, fabrication, and commissioning phases. Moreover, this self-managed project was effectively helpful in accelerating transfer of knowledge and shortens the learning curve of the personnel.

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