An apparatus, system, and method for recycling glass fiber waste, particularly glass fiber embedded within a binder material. The system includes a kiln, a char separator, and a multi-stage molten salt bath having a temperature gradient. Glass fiber waste is provided to the kiln which converts the waste into glass fibers and char. At least some of the char is then separated from the glass fibers in the char separator. The glass fibers, and any remaining char, are then placed in the molten salt bath at the point having the lowest temperature. The glass fibers are then moved to the higher temperature areas within the molten salt bath. As the glass fibers pass from the low temperature to the high temperature, any remaining char is consumed, and the glass fibers are reconditioned via ionic exchange for further use. The glass fibers are then cooled for reuse.

An apparatus, system, and method for recycling glass fiber waste, particularly glass fiber embedded within a binder material. The system includes a kiln, a char separator, and a multi-stage molten salt bath having a temperature gradient. Glass fiber waste is provided to the kiln which converts the waste into glass fibers and char. At least some of the char is then separated from the glass fibers in the char separator. The glass fibers, and any remaining char, are then placed in the molten salt bath at the point having the lowest temperature. The glass fibers are then moved to the higher temperature areas within the molten salt bath. As the glass fibers pass from the low temperature to the high temperature, any remaining char is consumed, and the glass fibers are reconditioned via ionic exchange for further use. The glass fibers are then cooled for reuse.

A glass tube cleaning and cutting device includes a glass tube cutting device configured to cut an end portion of a glass tube while the glass tube cutting device rotates the glass tube having a predetermined length about a tube axis of the glass tube and conveys the glass tube in a direction orthogonal to the tube axis, at least one blower configured to blow air into an opening located on a first end portion side of the glass tube, and at least one cutting blade provided at a position opposite to the at least one blower interposing the glass tube therebetween, the at least one cutting blade being configured to impose thermal shock and scratches on an outer circumference surface of a second end portion side of the glass tube to cut the second end portion side of the glass tube.

A glass tube cleaning and cutting device includes a glass tube cutting device configured to cut an end portion of a glass tube while the glass tube cutting device rotates the glass tube having a predetermined length about a tube axis of the glass tube and conveys the glass tube in a direction orthogonal to the tube axis, at least one blower configured to blow air into an opening located on a first end portion side of the glass tube, and at least one cutting blade provided at a position opposite to the at least one blower interposing the glass tube therebetween, the at least one cutting blade being configured to impose thermal shock and scratches on an outer circumference surface of a second end portion side of the glass tube to cut the second end portion side of the glass tube.

Embodiments of the present invention provide a method for finishing a glass product including a glass layer, the glass layer comprising boron. The method includes the step of cleaning the glass layer in order to remove boron at least at the surface of the glass layer. The step of cleaning includes the substep of esterification using a medium comprising an alcohol.

The invention relates to the field of materials based on mineral fibers, in particular mineral wool such as glass wool or rock wool. More specifically, the present invention relates to a method and a device for recycling the water recovered in a fiberizing and shaping method when using a specific acid binder based on monomeric polycarboxylic acid, or a salt of such an acid.

The invention relates to the field of materials based on mineral fibers, in particular mineral wool such as glass wool or rock wool. More specifically, the present invention relates to a method and a device for recycling the water recovered in a fiberizing and shaping method when using a specific acid binder based on monomeric polycarboxylic acid, or a salt of such an acid.