RGT Engineering Co., Ltd. 

Rock woll production line

Rock wool is man made vitreous fibers. It plays a significant role in energy saving by offering outstanding thermal insulation and acoustical protection. RGT Engineering Co., Ltd. was first committed to the innovation and development of rock wool insulation in the early 1980s to fill the long standing void at that time. As the very first few in this sector, RGT has accelerated the booming of rock wool industry. Through continuous technology improvement, RGT has made the changing process of technology evolution much faster. RGT Engineering Co., Ltd. is still holding the solid leading position in promoting new technology development and more energy efficient applications.

Technical Parameter

RGT Rock Wool Production Line Specification
Type Cupola Furnace Tank Furnace
Capacity 3000 tons – 30000 tons per year 2000 tons – 20000 tons per year
Raw material Slag and basalt Basalt, limestone, dolomite
Fuel Coke, Coal Natural gas or Heavy oil

Process Chart

Proportioning System

Melting System

Wool Collector
Automatic proportioning system, controlled by PLC. Various proportioning of different materials are achievable according to specific requirement. New energy saving furnace ensures a reliable melting performance and continuous operation. It requires considerably low maintenance as well.
Two types (Cupola furnace and Tank furnace) are available.
The fiberized wool from the melting system are collected by this machine. It also lays a foundation for second arrangement conducted by the pendulum.
Heat Exchanger Dust Collector Pendulum
Heat from the exhaust air could be recycled for reuse by this machine. It can greatly reduce energy waste and protect environment. It is used to collect dust and waste gas generated from the melting furnace and by the combustion of fuel. The fiberized wool are arranged and distributed evenly on the conveyor which transfers them to the curing oven for further treatment.
Pleating Machine Curing Oven Cutting Machine
The pleating machine is consisted of multi-roller which possessing different velocity respectively. The loose wool are arranged and pre-pressed in this section. Patented. The pretreated wool are cured in the curing oven, additives could also be added selectively, to produce the final products, such as board, blanket. The formed products are cut and sawed on this machine to achieve the desired dimension.
Pipe Rolling Machine Packaging Machine Blanket Stitching Machine
Pipe section of rock wool could be manufactured using pipe rolling machine. The finished products are packed for delivery or shipment on this machine. Blanket could be strengthened with glass fabric or wire mesh using blanket stitching machine. After stitching, the strength of blanket could improve considerably.
Blanket Rolling Machine    
Taking advantage of our technology and expertise, we can also provide rock wool products with higher quality and distinctive excellence.
Blankets are rolled into a bundle on this machine.    

Classification of Rock Wool Products

Specification of RGT Rock Wool Products

Nominal Density(kg/m3 )

Length(mm) Width(mm) Thickness(mm)
Board 40 – 200 1000 (adjustable) 500 – 2000 30 – 150
Blanket 40 – 100 1000 (adjustable) 1200 30 – 100
Stitched Blanket 40 – 90 1000 (adjustable) 1000 – 1200 40 – 100
Pipe Section 80 – 100 1000 Φ20 – Φ630 30 – 100