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Are the Process Equipment for Rock Wool Production Lines the Same as Those for Glass Wool Production Lines?

Are the Process Equipment for Rock Wool Production Lines the Same as Those for Glass Wool Production Lines?

2025-09-22

Are the Process Equipment for Rock Wool Production Lines the Same as Those for Glass Wool Production Lines?
The process equipment for rock wool production lines is not entirely the same as that for glass wool production lines. The core differences stem from variations in the melting properties, fiber-forming mechanisms, and subsequent processing requirements of their raw materials (rock vs. glass). While there are significant differences in key equipment, some auxiliary equipment can be shared.


I. Core Differences in Process Equipment (Key Distinctions)
Although both production lines follow the main process of "raw material preparation → melting → fiber formation → curing → cutting and packaging," the core equipment is designed differently due to the varying properties of raw materials. The specific comparisons are as follows:


Process Stage Key Equipment for Rock Wool Production Line Key Equipment for Glass Wool Production Line Core Reason for Differences
Raw Material Melting Cupola furnace (or electric arc furnace) Tank furnace (electric/gas-heated, continuous operation) Rock wool raw materials (e.g., basalt) have a high melting point (over 1500℃) and require high-temperature batch melting in a cupola furnace. Glass wool raw materials (e.g., broken glass) have a lower melting point (around 1200℃), making continuous melting in a tank furnace more efficient.
Fiber Formation Four-roller centrifugal fiberizer (lower rotational speed, suitable for high-viscosity melt) Centrifugal-blowing fiberizer (equipped with high-speed centrifuge + blowing system, higher rotational speed) Rock wool melt has high viscosity and forms fibers through rolling and spinning by four rollers. Glass wool melt has low viscosity and requires high-speed centrifugation + air blowing to refine fibers, resulting in finer fibers (3-5μm in diameter for glass wool vs. 5-8μm for rock wool).
Curing & Shaping Curing oven (gentler temperature gradient, slightly longer curing time) Curing oven (more precise temperature control, suitable for rapid curing of fine fibers) Glass wool fibers are fine and have low bulk density, requiring precise temperature control to avoid fiber sintering or insufficient curing. Rock wool fibers are thicker, allowing a wider curing temperature range.
Raw Material Pretreatment Jaw crusher, impact crusher (for crushing bulk rock) Glass crusher, screening machine (for processing broken glass and removing impurities)

Rock wool raw materials are bulk rocks, requiring coarse and fine crushing. Glass wool raw materials are broken glass, only requiring crushing and impurity removal (e.g., metals).


II. Shared Auxiliary Equipment (Common Components)
Auxiliary equipment in the production line that does not directly involve the core "melting-fiber formation" process is basically interchangeable between the two lines. It mainly includes:
Raw material conveying equipment: Belt conveyors, bucket elevators;
Product post-processing equipment: Slitting machines, cross-cutting machines, packaging machines;
Environmental protection equipment: Bag filters, desulfurization and denitrification equipment (for flue gas treatment), wastewater recycling systems.

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Are the Process Equipment for Rock Wool Production Lines the Same as Those for Glass Wool Production Lines?

Are the Process Equipment for Rock Wool Production Lines the Same as Those for Glass Wool Production Lines?

2025-09-22

Are the Process Equipment for Rock Wool Production Lines the Same as Those for Glass Wool Production Lines?
The process equipment for rock wool production lines is not entirely the same as that for glass wool production lines. The core differences stem from variations in the melting properties, fiber-forming mechanisms, and subsequent processing requirements of their raw materials (rock vs. glass). While there are significant differences in key equipment, some auxiliary equipment can be shared.


I. Core Differences in Process Equipment (Key Distinctions)
Although both production lines follow the main process of "raw material preparation → melting → fiber formation → curing → cutting and packaging," the core equipment is designed differently due to the varying properties of raw materials. The specific comparisons are as follows:


Process Stage Key Equipment for Rock Wool Production Line Key Equipment for Glass Wool Production Line Core Reason for Differences
Raw Material Melting Cupola furnace (or electric arc furnace) Tank furnace (electric/gas-heated, continuous operation) Rock wool raw materials (e.g., basalt) have a high melting point (over 1500℃) and require high-temperature batch melting in a cupola furnace. Glass wool raw materials (e.g., broken glass) have a lower melting point (around 1200℃), making continuous melting in a tank furnace more efficient.
Fiber Formation Four-roller centrifugal fiberizer (lower rotational speed, suitable for high-viscosity melt) Centrifugal-blowing fiberizer (equipped with high-speed centrifuge + blowing system, higher rotational speed) Rock wool melt has high viscosity and forms fibers through rolling and spinning by four rollers. Glass wool melt has low viscosity and requires high-speed centrifugation + air blowing to refine fibers, resulting in finer fibers (3-5μm in diameter for glass wool vs. 5-8μm for rock wool).
Curing & Shaping Curing oven (gentler temperature gradient, slightly longer curing time) Curing oven (more precise temperature control, suitable for rapid curing of fine fibers) Glass wool fibers are fine and have low bulk density, requiring precise temperature control to avoid fiber sintering or insufficient curing. Rock wool fibers are thicker, allowing a wider curing temperature range.
Raw Material Pretreatment Jaw crusher, impact crusher (for crushing bulk rock) Glass crusher, screening machine (for processing broken glass and removing impurities)

Rock wool raw materials are bulk rocks, requiring coarse and fine crushing. Glass wool raw materials are broken glass, only requiring crushing and impurity removal (e.g., metals).


II. Shared Auxiliary Equipment (Common Components)
Auxiliary equipment in the production line that does not directly involve the core "melting-fiber formation" process is basically interchangeable between the two lines. It mainly includes:
Raw material conveying equipment: Belt conveyors, bucket elevators;
Product post-processing equipment: Slitting machines, cross-cutting machines, packaging machines;
Environmental protection equipment: Bag filters, desulfurization and denitrification equipment (for flue gas treatment), wastewater recycling systems.