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Separación física de oro y otras partículas metálicas mediante dielectroforesis

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TODE20160822001
Publicado:
12/09/2016
Caducidad:
12/09/2017
Resumen:
Una universidad alemana ha desarrollado un nuevo método para separar oro y otras partículas metálicas mediante dielectroforesis. Este nuevo método reduce considerablemente la cantidad de productos químicos necesarios y conlleva una importante reducción de costes. La separación se consigue gracias a una configuración especial de electrodos que permite la creación de un campo eléctrico selectivo de las partículas metálicas. La universidad busca socios industriales interesados en licenciar la tecnología o establecer acuerdos de cooperación técnica para continuar con su desarrollo.

Details

Tittle:
Physical separation of gold and other metal particles by dielectrophoresis
Summary:
A German university has developed a new method able to separate gold or other metal particles from a mixture of particles by applying dielectrophoresis. The new method considerably reduces the amounts of chemicals that need to be applied and leads to significant cost savings. The university is looking for industrial partners willing to license the technology or to reach a technical cooperation agreement to further develop the technology.
Description:
At present, cyanide leaching is the method which is most often applied to extract gold from ores. On average, 150 tons of cyanide are needed for each ton of gold. It is estimated that 182,000 tons of cyanide are used worldwide each year which, despite subsequent treatment, are often released into the environment without restraint.

Apart from the high environmental impact, the costs for this procedure are immense: -Y-euro;300,000 per ton gold are attributable to the cyanide. In addition, there are other chemicals as well as the costs for maintaining environmental specifications. This means incurring costs ranging from -Y-euro;500.000 to -Y-euro;1.000.000 euros per ton of gold.

The invention of the German university consists of a plant and a procedure for separating gold or other metal particles from a mixture of particles by applying dielectrophoresis. The physical separation method specifically separates precious metals, e.g. gold, from a suspension. This is accomplished by a special configuration of electrodes allowing for the creation of an electric field which is selective to metallic particles.

The new method replaces environmentally hazardous cyanide leaching almost completely and thus considerably reduces the amounts of the chemicals that need to be applied. Depending on the given environmental specifications, cost savings amount to at least -Y-euro;500.000 per each ton of gold. This stands in contrast to investment costs of approx. 20 million euros per mine.

Depending on the output and the gold content, an amortization period of about five years may be expected. The method is also suited for the extraction of other metals or for recycling metals from material mixtures, for example, electronic waste materials.

The researchers from the university are now looking for companies that are interested in licensing agreements as well as technical cooperation agreements to further develop this technology.
Advantages and Innovations:
- Reduction of processing costs for separating gold or other metals
- Saving considerable amounts of chemicals contaminating the environment
- Better workplace conditions by restricting methods hazardous to human health
- Economically exploitable amounts of gold can also be obtained from the material of previous excavations (up to 1g gold per ton rocks suspension)
Stage of Development:
Under development/lab tested
IPs:
Patents granted
CommeR Statunts Regarding IPR Status:
Patent is granted in Germany
Further patents are currently being applied for in China and Australia

Partner sought

Type and Role of Partner Sought:
Cooperation Partners, e. g. companies, with experience in mining, separation of scrap metal

Task to be performed: Industrial scaling of the technology and adaptation to specific needs.
Furthermore, industrial companies that are interested in licensing the technology are sought.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
German

Keywords

Technology Keywords:
02007009 Materials Handling Technology (solids, fluids, gases)
02007010 Metals and Alloys
10002013 Tecnologías verdes / producción limpia