SU579233A1 - Method of granulating glass charge - Google Patents

Description

one

This invention relates to glass production technology and may be used in the building materials industry.

Methods are known for granulating a glass batch by adding in it binders containing components included in the glass composition l. The strength of the obtained granules 20-30 kg / cm.

The technological process of granulation consists in the fact that the powdery mixture is rolled into granules on a plate granulator with the addition of the advising substance. The obtained granules give rise to. Thermal treatment, - As a binder, sodium silicate is used caustic alkali sodium to potassium, calcium hydroxide 2,

However, the strength of the obtained granules is insufficient and they can be destroyed during long-term storage and during transportation.

The closest in technical essence and the achieved result is the method of granulating the glass batch by mixing it with a alkaline-containing component and an organic additive, followed by a roll, where the salt of lignosulfonic acid CВ is used as the organic additive.

However, the strength of such granules is not high enough; moreover, lignin-substance based on certain toxicity is the basis of lignosulfonic acids.

The purpose of the invention is to increase the mechanical strength of the granules and to improve the working conditions.

The goal is achieved by the fact that in the method of granulating glass batch c. As an organic additive, acid from the olefinic carboxylic acid group of concentration of 3–7% PO is used; volume.

Claims (3)

Technological. The process of granulating the glass batch is as follows 8. On. the granulator torus plate, rotating at a peripheral speed of 80-100 m / min, with the help of the feeder, the powder blend continuously flows with a specific jiose XXTcTb of 1,500,000 cm / g. acids in the amount of 3-7% by volume. The reaction results in the formation of a salt of olefinic carboxylic acid, precipitated in the form of a colloidal precipitate, which is characterized by gluing properties and contributes to the adhesion of a portion of the powdered mixture; zc HjjCooH-t Na cOj - “- ac n sootchnn about + so. The spherical granules of 3-6 mm in size are heat treated at 250-300 ° C. As examples, toHXm granulation for HC-2 glass is given. EXAMPLE 1 a batch of liquid leaked and oleic acid was used as a binder, prepared in a ratio by volume, which corresponds to the center of oleic acid 4.55% j HjO liquid glass T H COOI 20II Granule strength 45-53 kg / c Example2. A solution of soda and linoleic acid prepared in a ratio of 20: 1: 1.5 by volume, which corresponds to a concentration of linoleic acid of 6.65%: H-, 0: Na., CO, C, H, was used as a binder. CQQH 20H: V The strength of dry granules is 3545 kg / cm. The invention of the method of granulating a glass batch by mixing it with an alkali-containing component and an organic additive with a simultaneous roll, characterized in that, in order to increase the mechanical strength of the granules and improve the working conditions, the acid from the group of olefinic carboxylic acids in the amount of 3- is used as an organic additive. 7% of the charge. Sources of formatts taken into account during the examination: 1. Nisman M, Hechtman C, Shepherd N, Sytnik I, Shkumat I, On the use of granulated mixture in the manufacture of glass containers. VNIIESM, ref. inf. sir Glass manufacturing industry, 1973, 2, p. 3-10, 2.Patent of France 2135028, class C 03 C 1/00 ,. 1975. 3. US Patent 2,970,924, cl. 10652, 1961.