Zorba medium

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Zorba is a mixed colored metal scrap, mainly composed of aluminum, but also contains other metals such as zinc, brass, copper, and stainless steel. The size of Zorba is generally between 5mm-10mm, and the metal content is relatively high, with a moisture content of around 91%-92%. The copper content is generally not more than 4%.

According to the Institute of Scrap Recycling Industries (ISRI), Zorba is defined as: "A mixture of non-ferrous metal scraps, mainly aluminum, including aluminum, copper, lead, magnesium, stainless steel, nickel, tin, and zinc, in elemental or alloy (solid) form. The percentage of each metal in the mixture is determined by negotiation between the buyer and seller. The scraps are obtained through cyclone, air separation, flotation, screening, or other separation technologies, or a combination of these methods. The scraps are then processed to reduce or eliminate free iron and/or large iron impurities. They do not contain radioactive materials, slag, or ash."
When describing Zorba, there is an important way to express its specifications, which is to clarify its metal content and copper content, denoted by "xx/xx". For example, "95/5" means that the scrap contains 95% metal content, and the metal content contains 5% copper (or red metal).

Common Classification

Classified by copper content, Zorba can be divided into high-copper and low-copper materials. High-copper materials generally refer to Zorba with a copper content of 5% or higher, which is usually medium or small in size. Low-copper materials generally refer to Zorba with a copper content of 1%-5%, which is usually medium or large in size.
Classified by metal content, Zorba can be divided into high-grade and low-grade materials. High-grade materials generally refer to Zorba with a metal content of 90% or higher, which is usually clean and free of iron and other impurities. Low-grade materials generally refer to Zorba with a metal content of less than 90%, which may contain more iron and other impurities.

Common Sources

Zorba is mainly sourced from automobile dismantling and crushing factories or other non-ferrous metal scrap crushing factories. The metal content and ratio of Zorba vary depending on the source. For example, the Zorba produced by automobile dismantling and crushing factories contains a higher proportion of cast aluminum, while the Zorba produced by non-ferrous metal scrap crushing factories contains a higher proportion of wrought aluminum.

European Zorba with high wrought aluminum content

American Zorba with high cast aluminum content

Value Points

The value of Zorba lies in its non-ferrous metal content, particularly copper, which has a higher value than aluminum. Therefore, the copper content in Zorba is an important factor in determining its value.

Processing Methods

Zorba is processed through a series of steps, including:
1. Magnetic separation to remove iron and other ferromagnetic materials.
2. Floatation to separate aluminum and other non-ferrous metals from heavier metals like copper and zinc.
3. Air separation to separate lighter materials like plastic and paper from heavier materials like metal.
4. Screening to separate materials of different sizes.
5. Hand sorting to separate materials of different types and qualities.

Detection Methods

Zorba is detected through sampling and analysis, which involves:
1. Taking a representative sample of the material.
2. Analyzing the sample to determine its metal content and copper content.
3. Comparing the results with the specifications and requirements of the buyer.
Note: The above translation is based on the provided text and may not be entirely accurate or up-to-date.

Matching Direction

Zorba is matched with various industries and companies, including:
1. Trading companies that specialize in non-ferrous metal scraps.
2. Processing companies that specialize in separating and processing non-ferrous metal scraps.
3. Manufacturing companies that use non-ferrous metal scraps as raw materials.

Special Attention

When handling Zorba, special attention should be paid to its metal content and copper content, as these factors affect its value. Additionally, Zorba should be stored and transported in a way that minimizes contamination and damage.

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