Fe-Si Briquette EAST SEA CORPORATION

Intro Fe-Si Briquette Introduction of our Fe-Si briquette ■ Developed Fe-Si Briquette in order to subsitate Expensive Fe-Si briquette at SMS and reduce the cost Process of SMS East Sea Corp. ■ Electric furnace of STS for as Chromium(Cr203) reduction material ■ Ladle of Electric furnace for as Deoxidation ■ Converter of SMS for making Heat-raising Application ■ SMS for adding the content of Silicon(Si)

Specification of Product General specification Physical/Chemical Properties East Sea Corp. ■ Item : FeSi Briquette (Ferro Silicon Briquette) ■ Type : Briquette ■ Color : Dark Gray ■ Ingredients Fine Fe-Si (Fine Si-metal) + Special Binders ■ Pohto ■ Physical property - Intensity: over 60kg/ ㎠ - Bulk density : 2.0~2.5 - Melding speed: within 3min. (at 1500 ℃ ) FeSiCSMoistureSize Wt(%)10%50~55%5~ max.1.5 max.10~50mm (90% min.) ■ Chemical property ■ Particle photo by Scanning Electron Microscope (SEM) 100 ㎛ - Uniform distribution of particles - Fine packing factor Fe-Si Briquette

Comparison sheet between Fe-Si, Silicon carbide and Fe-Si Briquette East Sea Corp. Specification of Product 특 성특 성 구 분구 분 Main content Fe,Si Si, C Fe, Si Shape Massive Granule Massive Gravity 3.4~ ~ ~2.5 Permeability for steel Excellent Average Excellent Input Mat’l Price Expensive Expensive Cheap Reaction rate Average Slow Average Loss(%) Less Less Less Product price Expensive Average Cheap Working envir. Average Bad Average Ferro Silicon Silicon Carbide Fe-Si Briquette Total △ × ○ * Fe-Si Briquette has better performance & more reasonable price than Fe-Si Silicon. * Cost-saving : about 20% Fe-Si Briquette

Briquetting plant & Customer Pohang plant for manufacturing Fe-Si Briquette ■ Space : 10,500 ㎡ ■ Factory & Office: Three Buildings (3,500 ㎡ ) ■ Equipments - Capacity : 15Ton/hr (3,000Ton/Month) - Raw material storage - High performance MIXER - Briquetting Machine - Curing equip. (200Ton/batch) East Sea Corp. Fe-Si Briquette Gwangyang plant for manufacturing Fe-Si Briquette ■ Space: 8,000 ㎡ ■ Factory & Office: Two buildings (5,000 ㎡ ) ■ Equipments - Capacity : 20Ton/hr (4,000Ton/Month) - Raw material storage - High performance MIXER - Briquetting Machine - Curing equip. (300Ton/batch) Customer list ■ Fe-Si Briquette (50~55% ) - POSCO STS in Pohang & Gwangyang plant - Domestic market for electric furnace of SMS (Hyundai Steel, Dongkuk Steel, Etc. ) - Export (Taiwan, Indonesia)

Photos of Equip. East Sea Corp. Fe-Si Briquette Quality control, Inspection Material MixerBriquetter Curing Hopper