PROCESS AND APPARATUS FOR FORMING MAN-MADE VITEROUS FIBRES

摘要

A melt for use in the production of man-made vitreous fibres may be formed in a circulating combustion chamber (20) by melting particulate material. The material is collected in a base region of the combustion chamber (26), where it can be heated using submerged heating means (40). The submerged heating increases the homogeneity of the melt within the melt pool (30), the coherence of which is maintained by the use of a siphon (50) to extract melt from the combustion chamber.

主权项

1. A method of making man-made vitreous fibres (MMVF), comprising:
providing a circulating combustion chamber; injecting particulate fuel, particulate mineral material and primary combustion gas into an upper region of the combustion chamber and combusting the fuel, thereby melting the particulate mineral material to form a mineral melt; collecting the mineral melt in a base region of the combustion chamber; heating the collected mineral melt in the base region of the combustion chamber by submerged heating; extracting the collected mineral melt from the combustion chamber via an outlet comprising a siphon; and forming MMVF from the extracted mineral melt.