Continuous Production Line For Rock Wool Board

The continuous production line of rock wool board is a highly automated industrial production system, specifically designed to convert natural ore materials such as basalt into high-quality insulation materials required in the construction and industrial fields.

sandwich panel line

The rock wool sandwich panel production line represents the advanced technological level in the field of modern building materials manufacturing. Through a series of precision designed process steps and equipment combinations, it achieves seamless connection and continuous production from raw materials to finished products.

The core advantage of the continuous production line for rock wool board lies in its highly integrated design: raw materials are added to a closed furnace for melting through an electronic metering fully automatic feeding system, and after being spun into fibers by a four roll centrifuge, a binder is added. Then, they are sent to a curing furnace for board making through a cotton collector, pendulum cotton machine, and pre press machine. Finally, the entire production process is completed through cooling, cutting, waste edge recycling, fully automatic coding machine, and packaging. This continuous operation mode not only improves production efficiency, but also ensures the stability and consistency of product quality.

The production process of rock wool board is a precise materials science that involves high-temperature physical transformation and fine mechanical processing. The modern continuous production line of rock wool board has achieved an efficient and stable production process by optimizing traditional steps and introducing automation control. This process converts natural ore into engineering materials with excellent thermal insulation properties, and each step plays a decisive role in the quality of the final product.

The raw material melting process is the starting point and one of the most critical steps in the entire production process. The production line sends precisely proportioned raw materials such as basalt and slag into a blast furnace with a temperature of up to 1350-1600 ℃ for melting. This high-temperature treatment process requires precise control, and modern production lines are equipped with level controllers and water cooling systems to maintain a stable melting environment. The Qingdao Taishi rock wool production line adopts a closed furnace design, which not only improves the utilization rate of heat energy, but also reduces exhaust emissions. The melted magma enters the next stage through an active flow channel, and its temperature uniformity and fluidity directly affect the subsequent fiber quality. The fiber forming stage adopts advanced centrifugal technology, where molten magma flows into a high-speed rotating centrifuge and is stretched into fine fibers with a diameter of only 5-7 μ m under the action of centrifugal force. This step requires extremely high equipment accuracy, and modern four roll centrifuges can produce a more uniform fiber distribution.

The three-dimensional cotton weaving process represents the technological peak of modern rock wool production. Through the synergistic effect of the three-dimensional swing of the pendulum cotton weaving machine and the gourd roller pleating device, the fibers present a three-dimensional mesh structure. The latest developed vertical silk cotton technology can arrange 30% -40% of fibers vertically, and with the help of inclined conveying mechanism and staggered pressing device, the compressive strength of the product can be increased by more than 50%.

The solidification molding process transforms fluffy fiber felt into stable sheet products. The production line adopts a gradient temperature controlled curing furnace, with a temperature usually set between 200-250 ℃, to fully crosslink and cure the adhesive. The rock wool sandwich panel production line integrates a pressure device in the post curing stage, which ensures that the panel reaches the design density and strength through precise control of pressure and time parameters. After solidification, the continuous slab enters the cooling section and is subjected to forced air cooling to reduce the temperature of the slab to below 50 ℃, preparing for subsequent precision machining.

The finishing processing section includes precise cutting, edge treatment, and surface processing. The rock wool production line is equipped with a CNC cutting system, which adopts a dual moving device and a threaded rod transmission system. The cutting device is precisely moved through the cooperation of sliding blocks and grooves, and can complete continuous cutting of rock wool boards with a thickness of 20-300mm. The edge treatment adopts polyurethane foam edge sealing or metal edge sealing strip technology to enhance the beauty and functionality of the product. The final automatic palletizing and packaging process ensures the protection of the products during transportation, and the efficiency of the fully automatic packaging line can reach 3-5 packages per minute.

The continuous production line of rock wool board is an industrial equipment cluster composed of multiple precision designed subsystems, each of which undertakes specific functions to ensure the smooth production process and stable product quality. The technical level and collaborative efficiency of these devices directly determine the overall performance of the production line. The modern rock wool production line integrates mechanical, electronic, thermal and automation technologies, reflecting a highly specialized industrial equipment design concept.

The high-temperature melting system is the heart of the production line, mainly composed of a blast furnace and related auxiliary equipment. Modern cupolas have a diameter of 1800-1900mm and use a water-cooled wall structure to maintain a stable high-temperature environment. The furnace body is equipped with a uniform material distribution device and a material level controller, matched with an air supply system and a combustion control system, to ensure that the melting temperature is stable within the optimal range of 1350-1600 ℃. The exhaust gas treatment section includes cyclone dust collectors, combustion furnaces, and heat exchangers, which not only meet environmental requirements but also recover waste heat.

The fiber forming and cotton collecting system converts molten magma into uniform fiber felt, which determines the basic performance of the product. The four roll high-speed centrifuge is the core of this system, with a speed of 2500-3000rpm, which stretches the melt into fine fibers. The fiber forming area is equipped with precise lubrication and cooling systems to ensure long-term stable operation of the equipment. The cotton collecting machine adopts the principle of negative pressure adsorption, and the vertical triangular cotton collecting belt is combined with an air ring glue device to achieve fiber collection and slag ball separation. The latest drum cotton collector is designed with optimized airflow field, achieving a fiber collection efficiency of over 98% and effectively removing slag balls with a diameter greater than 100 μ m.

The cotton and pre pressing system precisely controls the density and fiber orientation of the product. The pendulum cotton machine optimizes fiber distribution through a three-dimensional swinging felt laying device, and the gourd roller pleating mechanism forms a staggered compression from top to bottom. The vertical silk cotton technology adopts an adjustable height upper roller group and a crank rocker drive device, which arranges some fibers vertically and greatly improves the compressive strength of the product. The pre press machine compresses the fluffy fiber felt to the target thickness through precise pressure control, preparing it for solidification and molding. The process parameters such as pressure, speed, and temperature in this stage need to be accurately matched with the previous and subsequent processes. The rock wool production line adopts a PLC system to achieve fully automatic coordinated control.

The solidification and thermal system are key links in ensuring the final performance of the product. The curing furnace usually uses gas heating, with a length between 30-50 meters, and is divided into three sections: preheating, curing, and cooling. The latest designed gradient temperature control curing furnace has a temperature control accuracy of ± 2 ℃, allowing the adhesive to cure uniformly without generating thermal stress. The hot air circulation system adopts heat-resistant fans and multi-point temperature monitoring to ensure a uniform and stable temperature field inside the furnace.

The cutting and post-processing system completes the final shaping work of the product. The cooled continuous slab is first cut to the standard width by a longitudinal cutting machine, and then cut to the set length by a transverse cutting machine. Modern cutting systems use servo drive and numerical control technology, with a positioning accuracy of ± 0.5mm. The automatic scrap recycling system crushes waste into 3-5mm particles, which are then metered and blended back into new raw materials, with a maximum blending ratio of up to 12%. The fully automatic palletizing machine achieves precise stacking through a visual positioning system, and is combined with a heat shrink film packaging machine to complete the final packaging of the product. The cutting system manufactured by Xiangtan Hongqiang Machinery is specially designed with dust-proof devices, which control the dust concentration in the working environment below 5mg/m ³, greatly improving the working conditions of workers.

The technology of rock wool board production line has undergone revolutionary development in recent years, gradually evolving from traditional mechanized operation to highly intelligent and automated modern industrial systems. This technological leap not only significantly improves production efficiency and product quality, but also endows the production line with stronger adaptability and flexibility, which can meet the market's demand for diversified and high-performance rock wool products. The current technological innovation mainly focuses on three aspects: production process optimization, equipment performance improvement, and intelligent control system integration.

The vertical wire structure technology represents the latest breakthrough in the production process of rock wool, significantly improving product performance by redesigning the fiber arrangement. This technology uses a special vertical wire pendulum cotton machine, which oscillates back and forth above the inclined conveying mechanism, and is combined with a gourd roller folding mechanism to form an up and down staggered pressing. Compared with traditional two-dimensional flat cotton cloth, this three-dimensional cotton cloth method can vertically arrange 30% -40% of rock wool fibers, and increase the compressive strength of the product by more than 50%.

The modern rock wool production line integrates a closed-loop heat recovery system, which recovers and utilizes waste gases from the blast furnace and solidification furnace through heat exchangers, meeting 30-40% of the production line's heat demand. The intelligent combustion control system adjusts the fuel and air ratio based on real-time production conditions to ensure full combustion while reducing energy consumption.