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Desulfurización de pasta de baterías mediante aminas. Centro de I+D polaco busca socios comerciales

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOPL20170613002
Publicado:
23/06/2017
Caducidad:
23/06/2018
Resumen:
Un instituto de investigación polaco especializado en tratamiento de minerales y utilización de residuos, metalurgia, hidrometalurgia, ciencia de materiales, fuentes de energía electroquímica, etc. ofrece un nuevo método integrado para reciclar el plomo de baterías usadas de plomo-ácido. Esta solución innovadora es más competitiva que la tecnología actual de sodio y se caracteriza por no generar residuos sólidos ni aguas residuales en el proceso de desulfurización, por generar un volumen de residuos tres veces menor y por la emisión mínima de SO2 a la atmósfera durante el proceso pirometalúrgico. El instituto busca socios con el fin de establecer acuerdos comerciales con asistencia técnica.



Details

Tittle:
Desulphurization of battery paste by amine method. A Polish R-Y-D institution is looking for commercialization partners.
Summary:
A Polish institute offers a new integrated method for recycling lead from lead-acid battery scrap. Innovative solution is competitive to currently prevailing sodium technology and is characterized by no solid waste and waste water in desulphurization operation, three times lower volume of generated slag and minimal emission of SO2 to atmosphere during pyrometallurgical process.

The research unit seeks commercial cooperation agreement with technical assistance.
Description:
The Research Institute in Poland conducting research in the field of: minerals treatment and waste utilization, metallurgy, hydrometallurgy, material science, electrochemical power sources and more.

The commonly used method for sulphur removal from battery paste is based on its leaching with solution of sodium carbonate or sodium hydroxide with production of desulphurized paste of sulphur content about 1.0% which is then sent for lead recovery in a metallurgical process. The sulphur from battery scrap (battery paste and electrolyte) is separated in a form of sodium sulphate(VI). The process is technologically difficult because of necessity of heavy metals removal and energy consuming operation of sodium sulphate crystallization.
The presented method for sulphur removal from battery paste by amine method uses extraction of lead(II) sulfate contained in the battery paste with aqueous circulating solution of polyamines, triethylenetetramine (TETA), or mixture of TETA with other polyamines, which are subjected to regeneration with Ca(OH)2. In the result a desulphurized paste is produced of sulphur content below 0.5% which is then sent for lead recovery in metallurgical process while the sulphur contained in battery scrap (battery paste and electrolyte) is separated in a form of gypsum used in cement industry.
The developed technology represents practically zero-waste recycling process of used active parts of lead acid batteries by production of processed paste of low sulphur and increased lead content which can be then smelted for lead production in an environmentally friendly way, while sulphur is transferred into low humidity (about 10% of H2O) gypsum, which can be used in production of building materials.
Advantages and Innovations:
The technology presents a new integrated method for recycling lead from lead-acid battery scrap and provides possibilities for:
· Reduction of sulphur content from the current level of 6 - 8% to < 0,5%, which is advantageous for further recycling of the paste;
· Production of synthetic gypsum from sulfates contained in battery scrap (battery paste and electrolyte);
· Smelting of desulphurized paste into lead;
· Production of chemically stable waste slag.

The method for sulphur removal is characterized by:
· No solid waste and waste water in desulphurization operation;
· Three times lower volume of generated slag (when compared to the conventional method);
· Minimal emission of SO2 to atmosphere during pyrometallurgical process
· High level of automation of individual stages of the technological process.

The developed technology for sulphur removal from battery paste by amine method represents an innovative solution. The method can be seen as competitive to the currently prevailing sodium technology.
Stage of Development:
Available for demonstration
IPs:
Patents granted

Partner sought

Type and Role of Partner Sought:
The potential partners could be any enterprise active in the field of recycling batteries interested in a licence agreement or licence agreement with technological assistance.

Client

Type and Size of Client:
R&D Institution
Already Engaged in Trans-National Cooperation:
No
Languages Spoken:
English
German

Keywords

Technology Keywords:
03004002 Inorganic Substances
10003004 Reciclaje, recuperación
10002007 Tecnología / ingeniería medioambiental