Description

Copper Cake, Zinc-Refining is a specialized intermediate product derived from the hydrometallurgical processing of zinc ores and concentrates. This material is critical for the efficient recovery and separation of valuable metals, particularly copper, from zinc refinery process streams. It is primarily utilized by non-ferrous metal smelters, zinc refiners, and precious metal recovery operations seeking to optimize metal yields and process economics.

Application

• Primary Copper Recovery in Zinc Refining: As a key intermediate in the purification of zinc sulfate electrolyte, facilitating the removal and concentration of copper impurities via cementation or selective precipitation.
• Feedstock for Copper Smelters: Serves as a high-value secondary raw material for copper production, where it is processed to recover metallic copper.
• Precious Metal Bearing Residue: Often contains trace amounts of precious metals like silver, gold, and selenium, making it a valuable feed for specialized precious metal refineries.
• Hydrometallurgical Process Optimization: Used to improve the overall efficiency and environmental footprint of zinc production by ensuring effective impurity control.
• Manufacture of Copper Compounds: Can be further processed to produce copper sulfate, copper oxide, or other copper-based chemicals.

Basic Information

Product Name	Copper Cake, Zinc-Refining
CAS No.	69012-51-7
Molecular Formula	Not Applicable (Complex Inorganic Mixture)
Molecular Weight	Not Applicable
Synonyms	Zinc Refinery Copper Cake; Copper Cementate; Zinc Plant Copper Residue; Copper Precipitate (Zinc Refining); Copper Sludge (Hydrometallurgy); Copper-bearing Filter Cake; IZ-Process Copper Cake; Jarosite Process Copper By-product
EINECS	Contact for details

Quality Control

Our Copper Cake is produced under controlled conditions to ensure consistent composition and metal content. Quality is verified through in-process controls and final batch analysis. Certificates of Analysis (COA) detailing key metallic constituents (e.g., Cu, Zn, Pb, Ag) and moisture content are provided with each shipment to ensure it meets your specific process requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and oxidizing agents. Due to its potential to be hygroscopic, prolonged exposure to high humidity should be avoided to prevent caking.

Specification

Item	Specification
Appearance	Dark colored, moist filter cake or solid
Copper (Cu) Content	40 - 70 %
Zinc (Zn) Content	5 - 25 %
Lead (Pb) Content	< 10 %
Silver (Ag) Content	Variable, typically 100 - 2000 g/t
Moisture	10 - 25 %
Assay (Metals)	ICP-OES / AAS

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.