Mineral powder pneumatic conveying technology is a process method that uses air as the conveying medium and utilizes the energy of airflow in a closed pipeline network to achieve continuous transportation of mineral powder. Its essence is to convert the kinetic energy or static pressure energy of air into the kinetic energy of materials, so that mineral powder particles and air form a mixed flow state, complete long-distance migration in the pipeline, and ultimately achieve the separation of gas-solid phases. Compared to traditional mechanical conveying, the core advantage of this technology is that the entire pipeline is sealed, fundamentally solving the problem of dust pollution caused by fine particle size of mineral powder, while also avoiding material loss during the conveying process.

Mineral powder is usually stored in silos or hoppers and cannot directly enter the conveying pipeline. The system uses a specialized feeding device to control and evenly feed the mineral powder in the warehouse into the airflow of the pipeline. The feeding device needs to break the agglomeration force between mineral powder particles, so that they can be effectively carried or pushed by the airflow. For fine particulate materials such as mineral powder, this stage determines whether the subsequent transportation is smooth and is the first hurdle to prevent pipe blockage.

Inside the pipeline, mineral powder moves along with the airflow. According to the different airflow velocity and pressure, mineral powder exhibits different motion states such as suspension, sliding, or clogging in the pipeline. The entire transportation process is carried out in a completely sealed pipeline, which not only protects the surrounding environment from dust pollution, but also protects the mineral powder material itself from external impurities, ensuring the purity of the material.

After the gas mixture reaches its destination, the mineral powder must be separated from the air. This process is usually completed in a separator, where mineral powder settles from the airflow under the action of gravity or centrifugal force and falls into the storage equipment; The exhaust gas carrying a small amount of dust will enter the dust removal equipment for purification treatment, and the final clean air that meets the standards will be discharged into the atmosphere.

Working principle: The power source of the system is installed at the conveying endpoint. By extracting air from the pipeline, a negative pressure environment below the external atmospheric pressure is formed inside the entire conveying pipeline. Under the action of atmospheric pressure, the external air carries mineral powder and is "sucked" into the pipeline, flowing towards the endpoint.

Core feature: Due to the negative pressure inside the system, even if there is a small leak in the pipeline, external air will flow in without any mineral powder spraying out. Therefore, this scheme performs the best in dust control and is particularly suitable for scenarios involving multi-point material collection and single point unloading.

Working principle: Roots blower or air compressor is installed at the starting point of transportation. The fan presses air with a certain pressure into the pipeline, and uses the thrust of positive pressure airflow to "push" the mineral powder from the starting point to the ending point.

Core feature: Positive pressure system can provide greater conveying power, so the conveying distance and amount are usually better than negative pressure system. It is very suitable for the layout of single point feeding and multi-point unloading, that is, distributing mineral powder from one silo to multiple different workstations.

Working principle: This is a special high-pressure, low-speed conveying method. The system adopts higher air pressure and lower wind speed, so that the mineral powder in the pipeline is no longer uniformly suspended, but accumulates into discontinuous columns. The airflow creates a pressure difference between the material plugs, utilizing the static pressure energy of pure air to push the material plugs forward.

Core feature: Due to the material sliding forward in a group form, friction and collision between particles and between particles and pipe walls are greatly reduced. This scheme is particularly suitable for long-distance and high concentration transportation of mineral powder, with significant advantages such as low pipeline wear and low material crushing rate.

Anti blocking tube design: Mineral powder is prone to sedimentation at low speeds or unstable airflow. Therefore, the system design must ensure that the airflow field inside the pipeline is evenly distributed to avoid material accumulation caused by low local wind speed.

Anti static and explosion-proof: When fine mineral powder moves at high speed in pipelines, friction between particles can easily generate static electricity. Based on the characteristics of mineral powder, the system usually requires complete grounding devices and anti-static measures to ensure safe operation.