LV10846B - Method and device for utilization of glass fiber waste - Google Patents

Abstract

Invention applies to the glass industry, namely the re-melting of glass fibre waste and it allows the use for production of at least 20 percent of glass fibre waste that inevitably appears through technological process.The method for processing glass fibre waste includes collecting fibre waste, re-melting and returning it into the production process and differs from previous processes with the fact that re-melting is performed in a vertical chamber at 1,300-1,500 degrees C temperature and the obtained glass mass is transformed thermally into a granulated product which is returned to the production process.The equipment for processing glass fibre waste (fig.1) consists of a vertical chamber for the intake of glass fibre waste, horizontal chamber for collecting glass mass and a trough type hydraulic granulation device. The proportion of diameter of glass fibre waste chamber against the height of the chamber is 1:6 and the length of the glass mass collection chamber does not exceed 1.5-2 diameters of the glass fibre waste chamber.<IMAGE>

Description

LV 10846

MATERIAL AND EQUIPMENT GLASS WASTE WASTE

FOR PROCESSING

The invention relates to the glass industry and directly to the glass fiber waste remelting. In addition, the invention also relates to the protection of the environment in the manufacture of fiberglass, since it restores the production of at least 20% of glass fiber waste inevitably resulting from the technological process.

It is known to melt glass fiber waste in bath tubs with batch and other raw materials (Προμ3βοοοτβο οτβκηηΗΗωχ βοποκοη μ τιοηθμ. Ποη pefl. XonaKoecKoro M.fl..., Xhmma, 1973, c. 58, Pnc. 3.2). The disadvantages of this technique are the malfunction of the bath furnace operating mode due to the periodic loading of the fiber waste in the furnace and the change in the glass melting process due to periodic changes in the furnace gas environment by burning the fibers of the organic waste.

There is a known technique (SU aut. No. 1404471) in which glass fiber waste is melted separately from other glass raw materials in special bath furnaces, the disadvantages of this technique being high fuel consumption, expensive self-melting equipment, i. The bathtub furnace and process require large production areas occupied by the furnace itself and its accessories.

The object of the invention is the recycling of glass fiber waste by melting and forming glass granules which are then readily reused for glass fiber production as a full-fledged raw material. 2 This objective is achieved by burning the glass fiber waste organic binders by re-melting them and thermally granulating the resulting glass mass. The fiberglass waste organic binders are burned and the glass is melted in a vertical chamber that consumes five times less fuel and occupies 20 times the base area of the same furnace. In addition, starting and stopping such a device requires a minimum of three times shorter. The furnace repair is simple and can be done by masons without high qualification.

The invention is explained in FIG. 1, which shows schematically the vertical cross-section of the furnace and the accessories.

The furnace consists of a glass-fiber waste chamber 1 with a circular cross-section and a glass-mass chamber 3 positioned horizontally in relation to the glass-fiber waste chamber 1. The glass mass exits the furnace through the eyelet 5. The furnace is heated by liquid fuel.

The machine works as follows. Glass fiber waste is fed to the furnace loading site at the top of the chamber with a skip hoist 9 and loaded through the valve 10 into the glass fiber waste bin 1. After loading, the valve is closed, the fiber waste falling into the chamber 1, partially caught on the conduit 2. This ensures that the bottom of the chamber will not collapse. and the smoother filling of the camera with the fiber. The combustion products from the liquid fuel nozzle 4, passing through the glass mass chamber 3, heat the glass mass and gradually heat it to the melting temperature as it passes through the glass fiber waste, and warms the newly introduced fiber waste and leaves the furnace 12 connected to the tube 12 flue. The fiber waste, when gradually melting in the chamber 1, slides down. The molten glass mass collects in the chamber 3 and flows out of the furnace 5 out of the furnace to the granulator 6, where it granulates through the jet of water delivered through the nozzle 8 and passes into the finished product container 7.

The temperature in the glass mass chamber is maintained between 1300 and 1350 ° C. the loading of the fiber waste is carried out in such a way that the fluctuation of the fiber waste level does not exceed 0.5 - 1 m. LV 10846 3

The described apparatus and the method of recycling glass fiber waste have the following advantages over known techniques and equipment: 1) at least 5 times less fuel consumption; 2) a production area of at least 20 times smaller that allows the equipment to be built directly at the fiber production site and to reduce transport costs; 3) capital investment is reduced by at least 12 times; 4) simpler service.

Claims (2)

1. A process for the treatment of glass fiber waste comprising the collection, remelting and returning of the fiber waste to the manufacturing process, characterized in that the resin is carried out in a vertical chamber at 1300 to 1350 ° C and the resulting glass mass is thermally converted into a granular product. 10 2. Plant for the treatment of glass fiber waste according to claim 1, characterized in that: it consists of a vertical chamber for receiving glass fiber waste, a horizontal chamber for glass mass collection and a gutter-type hydrogranulating device 15, a glass fiber waste cell diameter to a chamber height is 1: 6, the length of the glass mass collection chamber does not exceed 1.5-2 the diameter of the glass waste bin. 20