Silicon Slag 45

Silicon slag 45 is an industrial waste that is widely used in construction, ceramics, glass, casting and other industries due to its characteristics of high blast furnace melting point, low density, strong corrosion resistance, and easy processing.

1.Cost saving 20%–40%​ - significantly lower cost vs. FeSi75; directly reduces melt-shop alloy expenditure per ton

2.Reliable deoxidation​ - Si ≥45% provides strong oxygen affinity, reducing non-metallic inclusions and refining grain structure

3.Slag conditioning​ - inherent CaO/Al₂O₃ content improves slag fluidity and desulfurization efficiency in ladle furnace

4.No anti-dumping duty​ - not classified as Si metal or FeSi in certain regions, simplifying import procedures

5.Low impurities​ - S ≤0.1%, P ≤0.05%, protecting final steel mechanical properties

6.Stable supply​ - by-product of our own silicon metal production; cost and quality controlled from source

7.Multiple forms​ - lump, grain, powder, briquette available for different application scenarios

1. Sample: free sample by DHL, TNT, Fedex, EMS timely.

2. Packing: 1 Ton parcel, 1000kg/bag or as your detailed requirements.

3. Shipping: within 15-20 days after receiving your advance payment or L/C.

Available forms and sizes for Si45 slag:

Lump：10–100 mm(90% min)

Small lump：10–50 mm(90% min)

Grain：0–10 mm / 1–10 mm / 0–12 mm

Powder：0–3 mm / 0–5 mm

Briquette：made from Si45 slag powder, adjustable size, faster melting speed

Custom sizing：tailored to your furnace type and process requirement

Screening process：crushing + screening + magnetic separation ensures uniform particle size and reduced impurities

Powder control：undersize (≤10 mm) ratio controlled ≤10%

We are a vertically integrated manufacturer specializing in silicon series alloys and smelting by-products, not a trading intermediary. From sourcing silicon metal smelting residue to crushing, screening, magnetic separation, and final packaging-we control every step of the Si45 slag production chain. This gives steel mills and foundries worldwide consistent quality at true factory-direct pricing.

Q1: Can Si45 slag replace ferrosilicon in steelmaking?
A: Yes. In many carbon steel grades (rebar, wire rod, structural steel), Si45 slag can partially or fully replace FeSi75, reducing alloy cost by 20%–40% while maintaining metallurgical performance. The exact substitution ratio depends on your steel grade and purity requirements.

Q2: What sizes are available for Si45 slag?
A: Standard sizes: 0–10mm, 10–50mm, 10–100mm. We also supply powder (0–3mm / 0–5mm) and briquette form. All customizable.

Q3: How long is the delivery time?
A: 5–15 days after receiving the deposit or L/C.

Q4: What are your payment terms?
A: T/T (30% deposit, 70% against B/L copy) or 100% irrevocable L/C at sight.

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