Process of making glass to be transformed into continuous or discontinuous fibres.

摘要

Process enabling the degree of oxidation-reduction of a glass to be adjusted during its production. According to the invention, which is aimed at glasses intended to be converted into continuous or noncontinuous fibres containing not more than approximately 1 % by weight of Fe2O3, the degree of oxidation of the glass is obtained by incorporating into the mixture of vitrifiable products at least two oxidising agents, one of them being an inorganic nitrate and the other being chosen from a manganese oxygen compound in which the degree of oxidation of the manganese is greater than 2, potassium dichromate and/or ceric oxide. The invention promotes especially the recycling of scraps of glass fibre-based products into the vitrifiable mixture.