Zinc dust products, chemically known as metallic zinc dust, are a special form of zinc metal. They appear as a gray powder and can have different crystal structures based on the production process, including regular spherical shapes, irregular shapes, and flake-like forms. Zinc dust is insoluble in water but soluble in acids and alkalis, exhibiting strong reducing properties.
Subdivided Fields:**
1. Zinc Dust for Zinc-Rich Anti-Corrosion Coatings: The primary application of zinc powder products is as a key raw material for zinc-rich anti-corrosion coatings, widely used in large steel structures unsuitable for hot-dip or electroplating, such as steel structure buildings, marine engineering facilities, bridges, pipelines, ships, and containers.
2. Zinc Dust for Mechanical Powder Coating:Used for galvanizing small prefabricated steel components, bolts, screws, nails, and other steel products.
3. Zinc Dust for Multi-Element Alloy Co-penetration:Applied in outdoor steel components, fasteners, highways, aerospace, guardrails, bridges, plumbing equipment, building hardware, automotive, engineering machinery, and marine chemical industries, as well as metallurgy and power generation, for components requiring high temperature, impact resistance, and corrosion resistance.
4. Zinc Dust for Chemical Reduction Catalysis:Used in the production of chemical products, such as white blocks, dye intermediates, plastic additives, insurance powder, and lithopone, where it acts as a catalyst, reducing agent, and hydrogen ion producer.
5. Zinc Dust for Metallurgical Purification and Replacement:Utilized in the metallurgy of colored metal products such as zinc, gold, silver, indium, and platinum, playing a role in reduction, replacement, and impurity removal.
6. Zinc Dust for Pharmaceuticals and Pesticides:Used in the production of pharmaceutical and pesticide intermediates, primarily serving as a catalyst in organic compound synthesis and hydrogen bond formation.
7. Zinc Dust for Diamond Tool Production:Applied in the manufacturing of diamond tools, where it enhances the alloy strength and, due to zinc dust’s low melting point, lowers the melting point of copper alloys, thereby reducing the sintering temperature of diamond tools. Additionally, using zinc powder can partially replace tin powder, reducing production costs and improving the sharpness of diamond tools.
8. Flake Zinc Dust for Dacromet Coating:Used as a primary raw material for Dacromet coating. Flake zinc powder has superior covering, floating, shielding abilities, and metallic luster compared to spherical zinc dust. The Dacromet coating prepared with it features a flake-like arrangement, with plate-to-plate parallel overlap and contact, which effectively enhances electrical conductivity between zinc and steel, as well as among zinc particles. This results in a dense coating that prolongs corrosion pathways, reducing zinc consumption per unit area and coating thickness while improving shielding and corrosion resistance.
9. **Flake Zinc Dust for Zinc-Rich Paint:Used in the production of zinc-rich anti-corrosion coatings. Flake zinc dust has better covering, floating, shielding abilities, and metallic luster compared to spherical zinc powder. The zinc-rich paint made with flake zinc products has good suspension, is less prone to settling, and has a bright surface with a strong metallic feel. It also provides better adhesion between the primer and topcoat, lower porosity, and permeability, as well as enhanced corrosion resistance. For the same level of anti-corrosion effect, using flake zinc dust products leads to reduced zinc usage per unit area compared to spherical zinc powder products, making it more environmentally friendly.
Post time: Feb-06-2025
