In the journey of exploring the circular utilization of phosphogypsum resources, Henan Zhengzhou Mining Machinery Co., Ltd.( Hereinafter referred to as ZK) has set a new milestone for the industry with its innovative disc granulation technology. Recently, the company's PQ45 disc granulator was successfully applied and achieved production targets in Fuquan, Guizhou, marking significant progress in the treatment technology of phosphogypsum, a large-scale industrial solid waste, in China.

Phosphogypsum, a by-product of the wet-process phosphoric acid production process, has a large annual output and is difficult to process, posing a long-term challenge to the green development of related industries. Although rich in dihydrate calcium sulfate, phosphogypsum contains various impurities (including unreacted phosphate rock, residual phosphoric acid, fluorides, etc.) that severely hinder its resource utilization. These impurities not only pose a potential threat to groundwater and soil but also occupy valuable land resources. Therefore, safely and effectively converting and utilizing phosphogypsum has become a key issue that urgently needs to be addressed by the industry.

    The PQ45 disc granulator from ZK is designed to tackle this challenge. Through refined process control, this equipment can convert the previously hard-to-handle phosphogypsum raw materials into uniform granules with a diameter of 20-30 millimeters and a moisture content of about 15%, significantly enhancing the storage, transportation efficiency, and feasibility of subsequent deep processing of phosphogypsum. Before granulation, phosphogypsum undergoes a neutralization treatment step, where alkaline substances such as quicklime or carbide slag are used to adjust its pH and effectively reduce moisture content, ensuring the granulation effect meets both performance and environmental standards. 

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It is worth mentioning that ZK, with its strong technical research and development capabilities and customized service abilities, can provide comprehensive solutions for clients with different scales and needs. From test pelletizing discs with a diameter of just 500 millimeters to large industrial pelletizing discs with a diameter of up to 7.5 meters,  ZK 's product line covers the entire chain from small trials to large-scale production, demonstrating its profound expertise and market adaptability in the equipment manufacturing industry.

This technological innovation by ZK not only addresses key technical challenges in the resource utilization process of phosphogypsum but also contributes to the environmentally friendly use of solid waste. It is a vivid practice of the company's response to the national sustainable development strategy and support for ecological civilization construction. Looking to the future, ZK will continue to delve into research and development in granulation technology and related fields, providing solutions for more industries, jointly promoting the advancement of the circular economy and environmental protection, and contributing to the construction of a green and low-carbon production and lifestyle.