Jiangsu Xinpu Drying Engineering Technology Co., Ltd. is an integrated enterprise specializing in the R&D, design, manufacturing and after‑sales service of drying and calcination equipment. Located in Langxi Industrial Park of Jiangsu‑Anhui Economic Cooperation Zone at the heart of the Yangtze River Delta, the company sits adjacent to Changzhou, with about one‑hour drive to both Changzhou and Nanjing.
The registered capital stands at RMB 25.8 million. The company employs over 200 staff members, including 32 technical R&D personnel and 8 senior engineers. Covering a total land area of 268 mu, its workshop space exceeds 85,000 m², among which the heavy‑duty workshop occupies more than 45,000 m². It is equipped with over 20 sets of 100‑ton / 50‑ton overhead travelling cranes, plus more than 200 sets of precision manufacturing and testing instruments. The enterprise holds the A2‑grade Pressure Vessel Manufacturing License and has obtained ASME certification from the United States.
As a high‑tech enterprise focused on drying and calcination equipment, Xinpu Drying integrates research‑development, engineering design, fabrication and technical services. It has independently developed advanced drying, calcination and thermal energy technologies supported by a professional R&D team and mature manufacturing workforce. The large‑scale drying and calcination equipment delivered to well‑known lithium‑ion battery clients achieves top‑tier single‑line capacity within the industry. Delivering premium equipment and services to numerous key lithium‑battery manufacturers, our products have been successfully exported to international markets including Europe.
Serving chemical, new‑energy material, catalyst, environmental‑protection and fluorochemical industries, we provide complete solutions covering dewatering‑drying through high‑temperature calcination for powder, granular, paste and liquid materials, based on three core product lines: rotary kiln calciner, spin flash dryer and spray dryer.
Rotary Kiln Calciner
Composed of kiln cylinder, heating system, thermal insulation system and control system, rotary kiln calciners are designed for high‑temperature thermal treatment of powder and granular feedstock. The heating system adopts electric radiant heating or segmented combustion‑chamber control for precise temperature regulation across different furnace zones. The inclined kiln cylinder rotates at low speed so materials move forward while undergoing calcination. Material residence time can be flexibly adjusted by modifying inclination angle, rotating speed and internal components.
For processes requiring explosion‑proofing, anti‑oxidation or reactive atmospheres, continuous rotary atmosphere kilns are available. Featuring special sealing structures and real‑time oxygen monitoring, they support protective atmospheres such as nitrogen, argon and hydrogen chloride. Within the lithium‑battery sector, rotary kilns are widely used for iron phosphate calcination, lithium carbonate drying and oxygen‑free pyrolysis recycling of spent batteries. They deliver superior sealing performance, high automation and automatic segmented calcination temperature setting.
Spin Flash Dryer
The spin flash dryer integrates swirling flow, fluidization, spouting, crushing and classification technologies. Hot air enters tangentially at the bottom and generates a strong rotating airflow driven by agitators. Paste‑like materials are fed via screw feeders, rapidly dispersed and pulverized under impact, friction and shearing forces from high‑speed stirring paddles, then fully contacted with hot air for drying.
Dehydrated dry powder rises with air streams; oversized particles are trapped by the classification ring while fine particles are discharged and recovered through cyclone separators and dust collectors. Under‑dried materials are thrown back to the bottom by centrifugal force for re‑pulverization in a closed‑loop cycle. Compact in layout and capable of continuous production, this dryer features high drying intensity and thermal efficiency with short material residence time, making it suitable for heat‑sensitive materials. Its negative‑pressure operation ensures good tightness, widely applied for drying filter cakes and block‑shaped feedstock.
Spray Dryer
Spray dryers consist of two major series: centrifugal spray dryers and pressure spray dryers. For centrifugal spray dryers, feed liquid is atomized into fine droplets by high‑speed centrifugal atomizers. Contacting hot air in co‑current flow, 95%‑98% moisture evaporates within seconds to complete drying, well suited for heat‑sensitive materials. End products show good uniformity, flowability and solubility. Liquids with initial moisture of 40%‑60% (up to 90% for special materials) can be directly processed into powder or granules without crushing and screening steps, with dry powder recovery rate ≥95%.
Pressure spray dryers adopt diaphragm pumps to feed liquid under high pressure, accomplishing drying and granulation simultaneously. Spherical particles of target proportions can be obtained by adjusting pressure, flow rate and orifice size, achieving product recovery of 96%‑98% or higher.
These three types of equipment can operate independently or be combined into complete process lines, such as the “spin flash dryer + rotary calcination kiln” production line for iron phosphate and spray dryer units for lithium iron phosphate. They cover the full industrial chain of lithium‑ion battery cathode & anode materials, precursors and battery recycling. Equipped with professional test facilities, we offer sample testing and customized engineering design to guarantee proper matching between equipment performance and material properties.