Mobile Dosers Services Tek Lab History

Bronze Recycling Foundry

NaHCO3
Active Carbon / Lignite

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

The process of recovering bronze from scrap metal and industrial waste presents significant environmental challenges, primarily due to the polluting emissions generated during smelting. These fumes contain harmful substances such as sulfur oxides (SOx), hydrochloric acid (HCl), hydrofluoric acid (HF), and heavy metals. To mitigate the environmental impact, flue gas purification systems, which use specific additives such as sodium bicarbonate and activated carbon or lignite coke, are essential.

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

This type of plant features a two-station filtering system, which removes oxides, acids, and metals using a mill for grinding and dispensing the technical sodium bicarbonate and a doser for feeding activated carbon or lignite coke into the line.

While baking soda neutralizes the acids generated during the smelting process, activated carbon and lignite coke capture and eliminate heavy metals and other hazardous substances present in the flue gases.

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

Our Suppliers

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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 Bronze Recycling Plants

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Learn more about the technology behind our mills and dosers and discover how we can support your business with tangible results.

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

FAQ

What pollutants are present in the bronze recovery process?

The bronze recovery process produces fumes containing Sulfur Oxides (SOx), Hydrochloric Acid (HCl), Hydrofluoric Acid (HF), and heavy metals such as Lead (Pb), Cadmium (Cd), and Mercury (Hg). These pollutants arise from the composition of the metal scraps and the additives used in the melting process.

Why are sodium bicarbonate and activated carbon/lignite coke used for the treatment of fumes produced during bronze melting?

During the bronze melting process, scrap metals are heated to high temperatures, producing fumes that contain pollutants. The use of technical grade sodium bicarbonate and activated carbon/lignite coke effectively treats these fumes. Sodium bicarbonate neutralizes acids such as HCl and HF, while activated carbon/lignite coke absorbs heavy metals and other toxic substances, thus reducing the environmental impact of emissions.

What is the purpose of sodium bicarbonate in the treatment of fumes from bronze melting?

Sodium bicarbonate chemically reacts with the acids present in fumes produced during the bronze melting process, converting them into non-hazardous solid salts, such as sodium chloride. This process significantly lowers the acidity of exhaust gases and helps make the emitted air safer for the environment.

What is the role of activated carbon and lignite coke in the treatment of bronze melting fumes?

Activated carbon and lignite coke are essential for removing mercury and other heavy metals present in the fumes from bronze melting. They can absorb a wide range of toxic compounds, not just metals, thanks to their high specific surface area.

How do activated carbon and lignite coke differ in air purification?

Activated carbon stands out for its high efficiency in air purification, attributed to its superior adsorptive characteristics due to its porous structure and extensive surface area. It is particularly effective in filtering organic gases and vapors. In contrast, lignite coke has a more limited application, performing well in environments with temperatures below 200°C for the removal of specific pollutants. Its cost-effectiveness makes it a viable option for facilities operating within these thermal limits.

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