Rotating Distribution Chute for Blast Furnace Top Charging System

Product Specifications

Technical details and manufacturing context for Rotating Distribution Chute

Definition

The Rotating Distribution Chute is a critical component of the Top Charging System in blast furnace operations. It precisely controls the distribution of iron ore, coke, and flux materials into the furnace throat to ensure uniform burden distribution and optimal furnace performance. The chute rotates and tilts under hydraulic or electric drive control, directing raw materials from the receiving hopper into specific annular zones within the blast furnace to create a layered burden structure that promotes efficient gas flow and chemical reactions. Constructed from high-strength alloy steel with abrasion-resistant lining materials, the chute is designed to withstand harsh operating conditions. Key parameters include a rated capacity of 500–2000 t/h, rotation speed of 0.5–5 r/min, chute diameter of 800–1500 mm, chute length of 1500–3000 mm, tilt angle range of 0–60°, positioning accuracy of ±0.5°, operating temperature of -20–200°C, operating pressure of 1.0–1.6 MPa, drive power of 7.5–30 kW, supply voltage of 380–690 V AC (IEC 60038), ingress protection of IP54–IP65 (IEC 60529), chute material ZG40Cr25Ni20 (GB/T 8492), and weight of 1500–5000 kg. These values are reference ranges and must be verified for the specific model and application. The chute is a component, not a standalone machine, and its selection depends on blast furnace throughput, throat size, and material characteristics. Proper installation, alignment, and maintenance are essential for reliable operation. Regular inspection of wear liners and drive components is recommended. Always consult the legal manufacturer or supplier to confirm model-specific specifications and compliance with applicable standards.

Working Principle

The Rotating Distribution Chute operates by rotating and tilting under hydraulic or electric drive control. Raw materials from the receiving hopper are directed into specific annular zones within the blast furnace. The chute's rotation speed and tilt angle are adjustable to control the material trajectory and throw distance, enabling uniform burden distribution. This creates a layered burden structure that optimizes gas flow and chemical reactions. The drive system provides precise positioning, with an accuracy of ±0.5°, to ensure even layer formation. The chute is designed to handle high temperatures and abrasive materials, with cooling required above 200°C.

Common Materials

High-strength alloy steel, Abrasion-resistant lining materials

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Capacity	500–2000 t/h	Matches blast furnace throughput
Rotation Speed	0.5–5 r/min	Adjustable for uniform distribution
Chute Diameter	800–1500 mm	Fits furnace throat size
Chute Length	1500–3000 mm	Determines throw distance
Tilt Angle Range	0–60 °	Controls material trajectory
Positioning Accuracy	±0.5 °	Ensures even layer formation
Operating Temperature	-20–200 °C	Above 200°C requires cooling
Drive Power	7.5–30 kW	Depends on chute size and speed
Supply Voltage	380–690 V AC	Three-phase, 50/60 HzIEC 60038
Chute Material	ZG40Cr25Ni20	Heat-resistant cast steelGB/T 8492
Weight	1500–5000 kg	Increases with size and material

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Chute Body Part
Main structural component that guides material flow into the furnace

Material: High-strength alloy steel with abrasion-resistant lining
Rotation Mechanism
Provides controlled rotational movement of the chute

Material: Steel gears and bearings
Tilting Mechanism
Controls the inclination angle of the chute for precise material placement

Material: Hydraulic cylinders or electric actuators
Drive System
Provides power for rotation and tilting movements

Material: Electric motors, hydraulic pumps, and control valves
Support Structure Part
Mounting framework that supports the chute assembly

Material: Structural steel
Cooling System Optional
Keeps the chute body below its temperature limit where the burden runs hot.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Top Charging System

View system integration details

Manufacturers of Rotating Distribution Chute

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Frequently Asked Questions

What is the primary function of the Rotating Distribution Chute?

It distributes raw materials such as iron ore, coke, and flux evenly into the blast furnace throat to create a uniform burden layer, optimizing furnace performance.

What materials are used in the chute construction?

The chute is made of high-strength alloy steel with abrasion-resistant lining materials. The chute material is specified as ZG40Cr25Ni20 per GB/T 8492, but confirm with the manufacturer.

What are the typical operating parameters?

Reference ranges include rated capacity 500–2000 t/h, rotation speed 0.5–5 r/min, tilt angle 0–60°, and operating temperature -20–200°C. These must be verified for the specific model.

How is the chute controlled?

It is driven by hydraulic or electric systems that control rotation and tilt, with positioning accuracy of ±0.5° to ensure precise material placement.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Atmospheric to 0.5 bar gauge
flow rate:	50-500 tons/hour (material dependent)
temperature:	Ambient to 250°C (continuous), peak 300°C (short-term)
slurry concentration:	Up to 70% solids by weight (non-abrasive), 50% (abrasive)

Rotating Distribution Chute

Product Specifications

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