(Reporters: Xing Yazhuo, Cui Xiaoyun) Today, the production base of Hebei Yanming Chemical Equipment Co., Ltd. (hereinafter referred to as "Yanming Equipment") is filled with joy. The last double paddle dryer of the pyrite concentrate drying production line – customized for a key chemical enterprise in East China (hereinafter referred to as the "cooperating enterprise") with an annual sulfuric acid production capacity of 400,000 tons – was loaded and shipped. As this "giant" – with a drying capacity of 30 tons per hour and an annual drying capacity of over 260,000 tons at full load – sets off for the cooperating enterprise's factory, the pyrite concentrate drying production line will enter the on-site installation and commissioning phase, marking a key progress in the cooperative project between the two parties.

Precision Customized Equipment to Solve Pyrite Concentrate Drying Challenges

The double paddle dryer shipped this time is a "tailor-made" product by Yanming Equipment, developed to address the characteristics of pyrite concentrate, such as high viscosity, easy wear, and large single-unit drying capacity (>20 tons per unit per hour). The equipment adopts a dual heating design of "honeycomb jacket + in-shaft heating":

The honeycomb jacket uses a dense concave structure to increase the flow rate of the heating medium, improving heat transfer efficiency by 40% compared with traditional jackets. It also forms a hot air cushion to reduce wear of the equipment caused by pyrite concentrate.

In-shaft heating and the jacket form a three-dimensional heating network, ensuring sufficient heat supply during the drying process.

Different from the paddles of ordinary double-paddle dryers, this design uses a special structure – the special spiral ascending paddles not only achieve full contact between materials and heat sources but also accelerate the flow of materials inside the equipment (increasing conveying efficiency by nearly 10 times). This perfectly solves the industry pain points of "wall sticking, caking, and large drying capacity" during pyrite concentrate drying, ensuring a stable production capacity output of 30 tons per hour for each equipment in the entire production line.

"From design to production, we have maintained in-depth communication with the technical team of the cooperating enterprise throughout the process, and each parameter has been repeatedly verified. This is to ensure the equipment accurately meets its sulfuric acid processing needs," said Engineer Cui, the design director of Yanming Equipment.

Strong Alliance to Set a Benchmark for Chemical Equipment Cooperation

As a national high-tech enterprise, a "Specialized, Refined, Differential, and Innovative" enterprise in Hebei Province, and a "Shijiazhuang Gazelle Enterprise", Yanming Equipment has been deeply engaged in the chemical equipment field for many years. Relying on its independent intellectual property rights in technologies and equipment for drying, evaporation, crystallization, reaction, and pressure vessels, it serves more than 300 well-known enterprises, including BASF, BYD, CATL, and Minmetals Group, and has accumulated rich experience in the fields of lithium battery new energy and chemical raw material processing. The customized drying production line for the cooperating enterprise this time is another manifestation of its technical strength.

As a key chemical entity in the region, the cooperating enterprise holds full-chain qualifications for hazardous chemical production and mineral processing, and is a core force in the supply of chemical raw materials in East China. The introduction of Yanming Equipment's customized drying solution this time will not only optimize its pyrite concentrate deep processing process (with an expected annual pyrite concentrate processing capacity of over 200,000 tons) but also provide a "Yanming Solution" for the efficient utilization of non-metallic mineral resources.

Accelerated Delivery to Support Customer's Capacity Upgrade

"From the production of the first equipment to the shipment of the last one, we only took 30 days. This is to enable the cooperating enterprise to put the equipment into production as soon as possible and seize market opportunities," said Xu Yanguo, manager of Yanming Equipment. He added that the company will also send a technical team to the cooperating enterprise's factory to participate in the entire process of equipment installation and commissioning, ensuring the production line reaches its designed capacity quickly. In the future, the two parties plan to deepen cooperation in fields such as green chemical equipment R&D, and jointly promote the low-carbon and efficient development of the chemical industry.

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