Case study of the pneumatic conveying general contracting for quicklime powder silo pumps in Huluda

A building materials company needs to transport quicklime powder from the raw material silo to the mixing process on its production line in Huludao, Liaoning. Due to the strong hygroscopic properties, high dust content, and easy caking of quicklime powder, traditional mechanical conveying methods suffer from material leakage, severe equipment wear, and high maintenance costs. Dust pollution poses significant risks to operator health and the environment.

Customer pain points

• During transportation, quicklime powder generates a lot of dust and easily clumps, leading to a harsh workshop environment and increasing environmental protection pressure.
• Traditional screw conveyors or bucket lifters wear out quickly, causing frequent equipment shutdowns for maintenance, which affects production efficiency.
• The conveying distance is relatively long (about 80 meters), the equipment occupies a lot of space, and the modification is difficult.
• There is an urgent need for a sealed, low-energy, low-maintenance conveying solution that can accommodate frequent start-and-stop cycles and the demands of different batches of materials.

Solutions and product advantages

The Head powder technology team customized a set for the customer based on on-site conditionsPneumatic conveying system for silo pumps。 The system uses the principle of positive pressure dense phase conveying, using compressed air to transport quicklime powder in a plug or fluidized manner through sealed pipelines to the location. The specific advantages are as follows:

• Fully sealed conveying: The pipeline system is fully sealed, with no dust leakage from feeding to discharge, meeting environmental protection requirements while preventing quicklime powder from becoming damp and caking.
• Low wear design: Wear-resistant elbows and pipelines, combined with low-speed dense phase conveying mode, extend pipeline and equipment lifespan and reduce maintenance frequency.
• Automated control: Equipped with a PLC intelligent control system, it can adjust air volume, pressure, and time in real time, supports remote monitoring, and is easy to operate.
• Energy saving and consumption reduction: Compared to negative pressure or dilute phase conveying, gas consumption per ton of material is reduced by about 30%, making overall operating costs controllable.

After the project was put into operation, on-site dust concentration dropped below national standards, conveying efficiency increased by 40%, and the equipment operated continuously without faults for over six months. The customer expressed great satisfaction with the overall solution. This case can provide reliable references for enterprises in Liaoning and surrounding areas that need to transport quicklime powder, cement, fly ash, and other powders.