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Slag Entrapment & Liquid Level Turbulence in Aluminum Foundries: Application of Dual‑rotor In‑line Degasser for Billet Production Lines

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Slag Entrapment & Liquid Level Turbulence in Aluminum Foundries: Application of Dual‑rotor In‑line Degasser for Billet Production Lines

Brand Name:	Boqiang
MOQ:	1 set
Price:	USD 1,000
Packaging Details:	Standard export packaging (carbon box, pallet, film)

Detail Information

Product Description

Detail Information

Place of Origin:

China

Molten Aluminum Operating Temperature:

680‑770 ℃

Degassing Efficiency:

≥56%

Rotor Setup:

2 Composite Graphite Rotors, 0‑600rpm Variable‑frequency Speed Control

Molten Aluminum Throughput:

25‑35 T/h

Outlet Hydrogen (Inlet＜0.28mL/100g):

≤0.12 ML/100g

Inert Gas Requirement:

Purity≥99.996%, Dew Point＜‑69℃

Temperature Control Accuracy:

±2 ℃

Outlet Hydrogen (Inlet＞0.28mL/100g):

≤0.14 ML/100g

Supply Ability:

600 pieces/ year

Highlight:

Dual-rotor in-line degasser for billet casting

Aluminum foundry slag entrapment control

Continuous casting machine degasser parts

Product Description

Challenges of Slag Entrapment and Liquid-Level Turbulence in Aluminum Billet Continuous Casting

In aluminum billet melting-casting lines, violent liquid-level disturbance caused by rotor stirring is a major trigger for slag entrapment. Severe turbulence submerges surface oxide slag into molten aluminum, generating inclusion defects inside billets and impairing downstream extrusion performance.

Conventional degassing units may suffer mechanical vibration caused by poor drive-shaft concentricity or improper rotor immersion depth, which amplifies liquid-level fluctuation. For high-throughput billet lines running at 25–35 t/h, stable melt operating condition is essential to mitigate slag inclusions.

Solution from Dual-rotor In-line Degassing Unit

The FDUII-30 fixed box-type dual-rotor degassing unit features a chamber optimized via water-simulation test. Combined with dual variable-frequency rotors and submerged inlet-outlet design, the unit implements melt degassing while restraining intense liquid-level movement to lower slag entrapment risk, matching non-stop continuous casting rhythm for aluminum billet production.

Key Structural & Operating Parameters

Molten aluminum throughput	25–35 t/h
Number of rotors	2 composite graphite rotors
Rotor speed range	0–600 rpm, variable-frequency control
Rotor immersion depth in melt	600–700 mm
Drive-shaft concentricity deviation	≤0.5 mm
Max melt depth inside chamber	750 mm
Molten aluminum operating temperature	680–770 ℃
Temperature control accuracy	±2 ℃

Auxiliary Structures for Reducing Slag Entrapment

Beyond precise rotor assembly, submerged inlet-outlet ports isolate ambient air and cut down oxide dross generation. Dual-chamber layout supports even inert-gas bubble distribution and weakens local turbulent flow.

Lubrication and cooling modules are equipped for rotor driving assembly to sustain smooth long-time operation. Inert gas ports on tank cover feed N₂ or Ar to suppress fresh dross formation. Hydraulic lifting-rotation mechanism enables routine inspection and rotor replacement, preventing abnormal stirring from worn rotor components.

On-site Application Notes

Hardware configuration alone cannot fully eliminate slag-related issues. Operators shall set rotor immersion depth and rotating speed according to real-world production throughput, and regularly inspect drive-shaft concentricity.

Important: This equipment mitigates slag entrapment risk yet cannot remove foreign slag carried over from upstream processes, so pre-filtration and pre-slag-removal procedures remain necessary.

Tags:

Aluminum Melting Furnace

Homogenizing Furnace

Billet Casting Machine

Billet Cutting Machine

Regenerative Burner System

Continuous Casting Machine Parts

Aluminum Melting Furnace

Homogenizing Furnace

Billet Casting Machine

Billet Cutting Machine

Regenerative Burner System

Continuous Casting Machine Parts

products details

Aluminum Melting Furnace

Homogenizing Furnace

Billet Casting Machine

Billet Cutting Machine

Regenerative Burner System

Continuous Casting Machine Parts

Slag Entrapment & Liquid Level Turbulence in Aluminum Foundries: Application of Dual‑rotor In‑line Degasser for Billet Production Lines

Dual-rotor in-line degasser for billet casting

Aluminum foundry slag entrapment control

Continuous casting machine degasser parts

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