General contracting project for dilute-phase negative pressure sealed conveying of lithium battery

In the lithium battery industry, the environmental friendliness, stability, and efficiency of powder conveying directly affect the overall operational quality of the production line. Relying on years of pneumatic conveying technology accumulation, Head Powder successfully built a dilute-phase negative pressure sealed pneumatic conveying system for a lithium battery materials company in Wuzhou, Guangxi, solving the core challenges in powder conveying.

Case Background

A certain lithium battery cathode material manufacturer needs to continuously and stably transport fine powder lithium battery raw materials from the storage area to multiple feeding stations during production. The original conveying method used manual handling + open lifting equipment, which faced serious dust overflow, dirty and messy environments, high raw material waste, and significant health risks to workers. Enterprises urgently need an automated, enclosed conveying solution to improve on-site management and capacity stability.

Customer pain points

• Severe dust pollution:Open transport leads to lithium battery powder flying and excessive PM2.5 concentrations in workshops, which not only waste raw materials but also threaten the respiratory health of operators.
• High raw material loss:During manual transfer and mechanical lifting, powder tends to spill and clump easily, with an actual utilization rate of less than 95%.
• Low level of automation:Relying on manual feeding and unable to coordinate with the downstream batching system, production line cycle times are greatly affected by human factors.
• Frequent equipment maintenance:Traditional conveying equipment has poor sealing, bearings, chains, and other components are easily damaged by dust, resulting in downtime exceeding 12 hours per month.

Product advantages and solutions

To address these pain points, Head Powder has customized a dilute-phase negative pressure sealed pneumatic conveying system for users. This system uses negative pressure airflow as its power source, directly suctioning lithium battery powder from the feed point to the target position through a fully enclosed pipeline, with no leakage or dust throughout the process.

• Sealed conveying with low pollution:Special sealing gaskets are used at the pipeline flange connections, maintaining continuous negative pressure inside the system to prevent dust leakage, and ensuring the workshop environment meets clean production requirements.
• Low energy consumption, low loss:The dilute-phase conveying mode requires less airflow, with energy consumption more than 20% lower than traditional positive pressure systems; Materials move gently within the pipeline, with a crushing rate below 0.3%, and raw material utilization rate increased to over 99%.
• Intelligent control, unattended operation:Integrates PLC and upper-level computer systems, allowing setting conveying flow and batch, automatic switching of silos, and real-time interlock with downstream batching equipment, reducing manual intervention.
• Simple structure and easy maintenance:Featuring elbow wear-resistant ceramic lining and quick-release separator design, daily maintenance intervals extended to 3 months, with single downtime and maintenance times not exceeding 2 hours.

Application Effectiveness

The system has been operating normally at the customer's site in Wuzhou, Guangxi for 18 months, with no downtime incidents caused by conveying issues. Workshop dust concentration dropped from 35mg/m³ to 2.5mg/m³, monthly raw material loss was reduced by about 1.8 tons, and overall production line efficiency improved by 12%. The customer gave high praise to the system's sealing, automation level, and energy consumption, and planned to replicate the same solution at the new factory.

Head Powder will continue to focus on pneumatic conveying needs in lithium batteries, new materials, fine chemicals, and other fields, providing full-process services from solution design and equipment manufacturing to installation and commissioning, helping enterprises achieve green, efficient, and intelligent material circulation.