Zinc Dross
85–95% Zinc Content
High-density, top-grade Zinc Dross recovered from industrial hot-dip galvanizing kettles. Featuring 85–95% zinc content, it offers maximum yield for secondary distillation smelters and hydrometallurgical chemical production.
High-Value Zinc-Iron Intermetallic Slabs for Secondary Refining
Zinc Dross is a dense metallic by-product formed during hot-dip steel galvanizing. As steel passes through the molten zinc bath, small amounts of iron dissolve and react to precipitate dense zinc-iron crystal compounds (zeta and delta phases) that settle to the bottom of the bath.
With an assay ranging from 85% to 95% total zinc, Zinc Dross is among the richest secondary zinc materials available. Bhatti Chemicals Industry procures, assays, and segregates Zinc Dross to provide smelters, refiners, and chemical manufacturers with dependable, high-yield material.
Request Dross Pricing
Official In-House Quality Assurance Test Report
Guaranteed 85–95% Zinc Assay • Low Tramp Contaminants
Every Zinc Dross lot is analyzed in our analytical testing facility in Gujranwala. We assess free metallic zinc, total zinc equivalent, iron content, and lead percentages to ensure consistent furnace recovery.
Zinc Dross Analytical Specifications
Typical metallurgical assay for Zinc Dross supplied by Bhatti Chemicals Industry. Batch-specific COA provided with each order.
| Chemical / Physical Parameter | Specification Range | Industrial Significance |
|---|---|---|
| Total Zinc (Zn) Content | 85.0% – 95.0% | Exceptional recovery rate in distillation retorts |
| Free Metallic Zinc | 70.0% – 82.0% | Readily melted at sweat furnace temperatures |
| Iron (Fe) Content | 2.5% – 4.5% | Crystalline Fe-Zn phase easily separated as slag |
| Lead (Pb) Content | ≤ 1.20% | Low tramp fraction suitable for standard refining |
| Aluminum (Al) Content | ≤ 0.50% | Controlled levels prevent excessive oxidation skim |
| Physical Form | Solid pieces / chunks / slabs | High-density metallic material, variable slab sizing |
| Bulk Density | 6.8 – 7.1 g/cm³ | Maximizes container payload without volume limits |
Packaging & Handling Details
Zinc Dross is a heavy metallic material shipped efficiently in full container loads for domestic delivery and international export.
- 22 to 26 MT per 20-foot sea container (FCL)
- Shipped loose in lined containers or strapped crates
- Moisture-free storage prevents oxidation loss
- Full export documentation and SGS inspection available
Key Industrial Applications of Zinc Dross
Zinc Dross serves as a primary raw material across secondary smelting, chemical manufacturing, and metal alloying.
Secondary Zinc Smelting
Vaporized in indirect retort furnaces to produce high-purity secondary zinc ingots (≥99.95%) and zinc dust with high thermal efficiency.
Zinc Chemical Synthesis
Directly dissolved in technical-grade sulphuric or hydrochloric acid to yield zinc sulphate and zinc chloride solutions for fertilizer and mining.
Zinc Dust APCD Production
Vaporized and air-atomized to manufacture fine APCD-grade zinc dusts utilized in protective anti-corrosion marine coatings.
Foundry Master Alloys
Blended in copper foundries to produce intermediate master alloys and commercial brass ingots with predictable melting points.
Rotary Sweat Furnacing
Treated in rotary sweating furnaces at controlled melting ranges to separate free molten zinc from solid iron-rich slag cakes.
Zinc Oxide Raw Feedstock
Refined into intermediate secondary zinc metal charged into French Process furnaces to yield commercial rubber-grade Zinc Oxide.
Zinc Dross Procurement FAQs
Key technical, chemical, and logistics questions about sourcing Zinc Dross from Bhatti Chemicals Industry.
Zinc Dross is a dense, high-purity zinc-rich metallurgical by-product formed in hot-dip galvanizing kettles. As steel products pass through molten zinc at 450°C, trace iron from the steel reacts with zinc to form intermetallic crystal compounds (zeta and delta phases) that sink to the kettle bottom, yielding 85–95% total zinc content.
Our Zinc Dross features a guaranteed 85–95% total zinc content with typical free metallic zinc between 70% and 82%. Iron typically ranges from 2.5% to 4.5%, with ultra-low aluminum (≤ 0.5%) and lead (≤ 1.2%). Full batch laboratory analysis is provided.
Zinc Dross is processed in secondary distillation furnaces (retorts) or rotary sweat furnaces where the zinc vaporizes and is condensed into high-purity zinc ingots or zinc dust, while iron remains in the dross residue. It is also directly digested in sulphuric acid for zinc sulphate production.
Zinc Dross is shipped as dense metallic slabs and chunks either loose in heavy-duty lined 20-foot sea containers (22–26 MT per FCL) or packed in reinforced wooden/steel-strapped crates for secure international freight handling.
Inquire About Zinc Dross Lots & Delivery
Tell our trade specialists your required tonnage and processing destination. We provide lot assay verification, export documentation, and competitive pricing.