Nv Bekaert Sa

Societe Generale Pour Les Techniques Nouvelles

Societe Generale Pour Les Techniques Nouvelles S.g.n.

Sgn-societe Generale Pour Les Techniques Nouvelles

Em Research Labs LLC

Aubert, Bruno

Bruno Aubert

Serge Carpentier

Jean-baptiste Castang

The present invention has for its objects a process for extracting the chemical elements contained in diverse products (i.e. waste, ashes, used catalysts, etc. . . .) or in raw materials such as soils, sediments, lands, brownfields and ores and a device to implement the process. The process consists in forming volatile compounds with one or several elements to be extracted present in a first reactor using a gas being maintained outside of thermodynamic equilibrium as in non-thermal plasma (electric discharge under high or low pressure, corona discharge . . . ). These volatile compounds are then exhausted towards secondary reactors intended to selectively extract said volatile compounds by decomposition or by condensation to recover each elements and the gas which can be recycled.

Chemical elements extraction process by non-thermal plasma and device for implementation

The invention relates to a disinfection or sterilisation method. The material to be disinfected is introduced in a receptacle and the receptacle is sealed. Subsequently, the sealed receptacle is heated under a water vapour and/or radical pressure. The water vapour pressure and/or radical pressure is obtained during the heating by evaporating the water and the radicals absorbed and/or formed in a natural way at the surface of the material.

Disinfection or sterilisation method

A filter assembly including a filter medium installed in at least one receptacle. The filter assembly includes a heating system to heat the filter medium. The filter medium includes metal fibers. The receptacle or receptacles are provided with at least one air inlet and with at least one air outlet and a device to eliminate the air and free space around and in the filter medium. The receptacles may include at least two deformable walls, which are membranes made of a polymeric or elastomeric material, and the filter medium may include at least one sintered, non-woven metal fiber web.

Filter assembly

The furnace according to the invention makes it possible to continuously vitrify and/or densify toxic materials, such a nuclear waste, by using microwaves. The furnace contains two vertical ends connected by a horizontal melting vessel. The materials to be melted and the microwaves are introduced at the first end. The melting vessel has a constant cross-section as a result of a horizontal upper wall in order to aid the distribution of the power of the microwaves over the surface of the molten bath. Preferably, the second end is provided with a piston making it possible to regulate the return of non-absorbed microwaves.

Microwave melting furnace for the vitrification and/or densification of

The invention relates to a process for the preparation of a borosilicate glass containing nuclear waste. In this process, an inactive borosilicate matrix is prepared in an aqueous medium by mixing the following:

Process for the preparation of a borosilicate glass containing nuclear

The invention relates to a process for the immobilization of nuclear waste in a borosilicate glass. In the process, the following are mixed simultaneously:

Process for the immobilization of nuclear waste in a borosilicate glass

The present invention relates to a method for immobilizing and packing radioactive 'ashes' in a mineral matrix, said method consisting in adjusting the coefficient of expansion of said ashes, molding around said ashes a porcelain in the raw state and taking the whole in one operation to form a hermetically sealed block.

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Connaux, France

Bruno Aubert