Chongqing Lithium Salt Powder Moisture-Proof Conveying Project

In the lithium battery industry, maintaining the quality of raw materials during transport is a critical challenge. A recent project in Chongqing addressed the specific issue of moisture absorption in lithium salt powders, which can lead to clumping, degradation, and production inefficiencies. The solution developed by Headpowder demonstrates how targeted engineering can solve such material handling problems.

Project Background

A major lithium salt powder processing facility in Chongqing required a reliable conveying system to move fine, hygroscopic powders from storage to mixing stations. The facility faced frequent blockages, inconsistent feed rates, and quality loss due to moisture uptake during conveyance. The existing open conveyor systems allowed ambient humidity to contact the powder, causing caking and requiring frequent maintenance shutdowns.

Customer Challenge

The primary pain points included:

• Moisture-sensitive lithium salt powders absorbing humidity from the air during transport, leading to agglomeration and reduced product purity.
• Frequent conveyor clogging that disrupted production schedules and increased manual cleaning labor.
• Lack of precise control over the conveying environment, resulting in inconsistent powder flow and downstream mixing quality.
• High equipment corrosion rates due to the hygroscopic and slightly corrosive nature of the salt particles.

Solution Provided by Headpowder

To overcome these challenges, Headpowder designed a fully enclosed, moisture-proof pneumatic conveying system tailored for fine lithium salt powders. The solution integrates:

• Hermetically sealed pipeline systems with dehumidified air injection to maintain relative humidity below 20% throughout the conveying path.
• High-efficiency cyclones and filter receivers that prevent powder exposure to ambient air during loading and discharge.
• Variable speed rotary airlocks and pressure sensors to ensure consistent material flow even with varying particle sizes.
• Corrosion-resistant stainless steel and PTFE-lined components to withstand the chemical environment without degradation.

After installation, the customer reported zero clogging incidents during the first six months, a 35% reduction in powder waste, and improved batch-to-batch consistency. The sealed system also reduced cleaning downtime by 70%, directly supporting higher overall equipment effectiveness.

Key Benefits

• Consistent powder quality with minimal moisture pickup.
• Reduced maintenance and cleaning frequency.
• Improved process reliability for downstream mixing and dosing.
• Extended equipment service life through corrosion-resistant materials.

This project illustrates how a focused approach to moisture control in material handling can solve long-standing operational issues in sensitive powder processing applications.