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Scrap Iron Recycling Foundry

NaHCO3
Active Carbon / Lignite

Technical Sodium Bicarbonate and Activated Carbon/Lignite Coke for Scrap Iron Recycling Foundry

In the ferrous scrap recycling process, the use of high-temperature furnaces is a crucial step in obtaining reclaimed metal ready for new applications. Melting the recovered iron generates significant emissions of harmful gases, including sulfur oxides (SOx), hydrochloric acid (HCl), and hydrofluoric acid (HF), as well as possible heavy metal vapors from impurities in the waste material. These contaminants, if not properly treated, can have a significant environmental impact. A technologically advanced solution to mitigate these emissions and ensure an environmentally friendly process is the combined use of technical sodium bicarbonate and activated carbon or lignite coke.

Solution with Technical Grade Sodium Bicarbonate plus Active Carbon or Lignite Coke

The proposed solution for treating fumes produced during the melting of ferrous scrap is based on the integration of two essential elements. A mill, used to grind technical sodium bicarbonate, efficiently delivers the material to neutralize the acids released during the melting process. At the same time, a dedicated dosing unit injects activated carbon or lignite coke, which plays a key role in adsorbing heavy metal particles and other hazardous pollutants. This combined system works synergistically to ensure advanced emissions management and significant pollutant reduction.

Design and Realization

MetalTek specializes in the design and manufacture of high-quality mills and feeders with top-quality components. Our equipment is available in various configurations, and upon request, we can design customized loading and injection solutions for every need.

Metaltek Mills Specialized for Technical Grade Sodium Bicarbonate Metaltek Dosers Specialized for Active Carbon or Lignite Coke

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Metaltek Services: Assistance, Maintenance and Monitoring

Assistance, Maintenance and Monitoring Services on existing systems

Metaltek, with thirty years of experience in the sector, supplies cutting-edge systems for the purification of industrial fumes, designed to guarantee reliability, continuous efficiency and compliance with environmental regulations.

Thanks to our team of highly specialized consultants and designers, we create customized solutions that optimize the use of sodium bicarbonate, activated carbon, and lignite coke , reducing operating costs and waste. We offer timely assistance, professional analyses, teams equipped to work at heights and in confined spaces, and a constantly stocked spare parts warehouse. The quality and robustness of our systems, combined with global technical support and our Tek Lab analysis service make them ideal for flue gas purification where precision, reliability, and service continuity are essential.

Tek Lab by Metaltek: the exclusive fixed and mobile analysis laboratory for monitoring, testing and innovation

Tek Lab: Analysis and Innovation Laboratory

Tek Lab by Metaltek is a leader in the analysis of industrial fumes and residues. A cutting-edge technology to detect and address issues with overdosing or problems related to excess acids, dioxins, or other harmful compounds. It offers both on-premises analysis and on-site monitoring and analysis with its mobile laboratory.

Quality Products and exclusive Metaltek Services: a benchmark, the state of the art of Scrap Iron Recycling Plants

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Flue Gas Cleaning with Technical Grade Sodium Bicarbonate and Active Carbon or Lignite Coke

FAQ

What are the common pollutants in the ferrous scrap recovery process?

During the treatment and melting of ferrous scrap, in addition to sulfur oxides (SOx), hydrochloric acid (HCl), and hydrofluoric acid (HF), there is frequent release of heavy metals such as lead and cadmium, often present in the alloys or original impurities of the scrap. These pollutants demand highly efficient filtration systems to prevent environmental harm.

Why are technical grade sodium bicarbonate and activated carbon/lignite coke used in the ferrous scrap recovery process?

During the melting of ferrous scrap, harmful substances such as sulfur oxides (SOx), hydrochloric acid (HCl), and hydrofluoric acid (HF) are released. Technical grade sodium bicarbonate neutralizes the acids present in these fumes, transforming them into more stable and less hazardous compounds. On the other hand, activated carbon/lignite coke is used to adsorb heavy metals and other harmful particles, acting complementarily to the bicarbonate and adapting to various operating conditions.

What is the purpose of sodium bicarbonate in the ferrous scrap recovery process?

Sodium bicarbonate chemically reacts with the acidic compounds derived from the melting process, converting them into non-harmful salts, such as sodium sulfates and chlorides. Through this reaction, there is a significant reduction in the chemical aggressiveness of the fumes, contributing to an effective reduction of acid emissions and minimizing the environmental impact of the process.

What role do activated carbon and lignite coke play in treating the fumes produced during ferrous scrap recovery?

Activated carbon and lignite coke are essential for capturing vapors of heavy metals, such as mercury, lead, or cadmium, which may be present in metal scrap. Through the process of adsorption, activated carbon and lignite coke intercept these hazardous impurities, acting as a barrier against volatile pollutants and protecting the environment from the risks associated with their release.

When is activated carbon used, and when is lignite coke preferred?

Activated carbon and lignite coke are both used in fume purification but differ in some key properties. Activated carbon is highly valued for its extraordinary adsorption capacity, enabled by its porous structure and large surface area. These features make it suitable for absorbing a wide range of gases and organic vapors. In contrast, lignite coke is primarily effective in environments with temperatures below 200°C, being specifically targeted toward certain types of contaminants. Its cost-effectiveness makes it an advantageous choice for ideal operating conditions.

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