Lead-zinc Powder
1. Material Overview
Lead-zinc ore refers to mineral deposits rich in the metallic elements lead and zinc.
Lead is one of the earliest metals extracted by humans from lead-zinc ore. It is one of the softest heavy metals and also one of the densest metals. It is bluish-gray in color, malleable, and easily alloys with other metals (such as zinc, tin, antimony, arsenic, etc.).
Zinc was extracted from lead-zinc ore relatively late. Zinc metal is bluish-white and has good compressibility. Zinc can be alloyed with many non-ferrous metals, most notably with copper, tin, and lead to form brass, and can also form die-casting alloys with aluminum, magnesium, and copper.
2. Process Introduction
Wet lead-zinc powder from the upstream section is fed into the steam rotary dryer. Inside the dryer, as the cylinder rotates, the wet material is lifted and dispersed by the heating tubes, and it is dried by multiple heat exchange methods, including convection, conduction, and radiation. The material moves from the higher end to the lower end due to the dryer's inclination, and is finally discharged through a rotary discharge valve at the tail end of the steam rotary dryer. Adjusting weir plate at the discharge end of the dryer is installed to regulate the material filling rate within the cylinder. Combined with the cylinder's inclination and rotation speed, this allows for adjustments to the material's residence time, filling rate, and output requirements.
3. Technical Advantages
1) Targeted wear-resistant design + independent patent protection
Specifically developed for highly abrasive materials, the core components are specially formulated for excellent wear and corrosion resistance. Combined with multiple independent invention patents, it meets the drying needs of highly abrasive materials in the metallurgical industry, ensuring strong operational stability.
2) High-efficiency heat exchange + simple structure
Adopting split circular tube design, it boasts large heat exchange area, high heat transfer efficiency, and outstanding mechanical efficiency. The equipment has a simple and compact structure, occupying a small area, simplifying the installation process and saving workshop layout space.
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3) Serialized adaptability + convenient operation and maintenance
Serialized product layout has been achieved to match different production capacity requirements. The core component design facilitates maintenance, significantly reducing maintenance difficulty and downtime, and adapting to large-scale continuous production scenarios.
4. Technical Benefit
1) Strong adaptability to material handling + low loss
Specifically designed for highly abrasive materials, reducing equipment wear and material entrainment losses, ensuring stable material quality during drying, and adapting to the drying needs of various minerals in the metallurgical industry without additional modification.
2) Optimized operation and maintenance costs
High-efficiency heat exchange design reduces steam consumption; high mechanical efficiency reduces power consumption; simple structure and easy maintenance reduce spare parts replacement and maintenance labor input, resulting in superior long-term operating costs.
3) More flexible investment and layout
Small footprint reduces investment in civil works and equipment installation; a series of products can be selected as needed, combined with mature technologies from multiple successful project installed, resulting in low investment risk and easier subsequent capacity adjustments and the upgradation of production line.