Technological advancements are driving down costs, and the "innovation battle" in the iron phosphate process is in full swing.

As a core precursor for lithium iron phosphate batteries, the preparation process of iron phosphate directly affects the battery's cost and performance. Currently, the industry's mainstream processes are undergoing a new round of optimization competition centered around "cost reduction, purification, and waste reduction."

Currently, the industry mainly employs two technical routes: the "sodium method" and the "ammonium method."

1. The sodium method (using sodium hydroxide/sodium carbonate as a precipitant): This mature process with a fast reaction speed was the mainstream route in the early days, but the byproduct sodium sulfate has low value and high processing costs.

   
   

2. The ammonium method (using ammonia as a precipitant): This method has rapidly gained popularity in recent years because its byproduct ammonium sulfate can be sold as a high~quality nitrogen fertilizer, achieving better economic benefits and material recycling, and has become the main driver of current capacity expansion.

   The focus of technological innovation lies in the "meticulous calculation" of raw materials. Leading companies in the industry are committed to:

   
   

l Raw material refining: Directly using high~purity phosphoric acid and iron sources, shortening the process, to produce high-density iron phosphate to meet the needs of high-end batteries.

l Resource Recycling: Actively explore the use of low~cost industrial byproducts such as ferrous sulfate (a byproduct of titanium dioxide production) and wet~process phosphoric acid refining solution as raw materials to significantly reduce production costs.

l Process Optimization: Optimize product particle shape and tap density through precise control of reaction temperature, pH value, and doping technology, thereby improving overall battery performance.

As the growth rate of demand in the new energy market slows down, cost and technological advantages have become crucial for the survival of enterprises. This process innovation, centered on resource utilization efficiency, is driving the iron phosphate industry from extensive expansion to a new stage of refined and low~carbon development. Companies that master core process optimization capabilities and low~cost raw material routes will take the initiative in the next round of industry consolidation.