SU487043A1 - The method of manufacture of the charge - Google Patents

Description

one

The invention relates to the refractory materials industry, in particular to methods for the manufacture of batches for the production of refractory high-density aluminosilicate articles.

A known method of making charge based on chamotte and clay by hydrophobing the charge components, mixing the coarse fraction of chamotte with the ground part of the clay and then introducing it into the mixture of finely ground fireclay and other part of the clay.

However, the manufacture of the mixture. According to this method does not provide good compressibility, increased strength and density.

The aim of the invention is to eliminate these drawbacks.

This is achieved by the fact that a large fraction of fireclay is heated to 45-75 ° C, kept at this temperature for 35-90 seconds, a slurry is prepared from finely ground clay and treated at 35-55 ° C with ultrasound with a frequency of 15-20 KHZ for 3- 5 minutes and mixed with% -Vs parts of the 1-part chamotte fraction, after which another part of the slurry is added to the mixture obtained, previously treated with a stream of electrons with an energy of 150-250 MEV, density e- / cm2, finely ground chamotte and the remaining part

chamotte fractions. In addition, triethanolamine and then salts of ignosulfonic acids are previously introduced into the water used to prepare the slip.

Example. Fireclay fraction 3-0.5 mm and clay covered with a layer of organic matter, and then hydrophobized shamog heated to 45-75 ° C and maintained at this temperature for 35-90 seconds, parts

hydrophobied and heated chamotte fractions of 3-0.5 mm are moistened with a slip, successively mixed with fine chamotte and dispersant, clay, and then the remaining part of hydrophobised chamotte fraction 3-0.5 MM is added to the mixture. The slurry is prepared as follows: in the water used to prepare the slurry, triethyolamine is first dissolved at 20 ° C and then the salts of lignosulfonic acids, the solution is heated to 27-35 ° C and montmorillonite clay or kaolinite is gradually added with mixing. The clay used for the preparation of the slip is hydrophobized by surface-active substances, then irradiated with electron fluxes with an energy of 150-250 MEV with density e- / cm2. The slip, heated to 30–50 ° C and aged for 15–20 min, is sonicated at a frequency of 18–20 kHz for 3–5 min.

Pressing and roasting are carried out already with fine tricks.

Samples manufactured according to this method are characterized by the following indicators:

2.31-2.33 g / cm3

Seeming density of raw material after roasting at 1550 ° С

2.47-2.48 g / syz Apparent with a density of 6.5 -7.9%

Apparently with a porosity of 1370-1500 1KGS / CM2

Compressive Strength

1730 ° C

Fire resistance

5.4 -5.7

The optimum moisture content of the charge in the manufacture of samples,%

Subject invention

Claims (2)

1. A method for manufacturing chyamot and clay-based solvents by hydrophobing the components in the mixture, mixing the coarse fraction of the chamotte with the ground part of the clay and then introducing an IB mixture of the fine part of the fireclay and other part of the clay, which is why the chamotte fraction is heated to 45-75 ° C, kept at this temperature for 35-90 seconds, a slip is prepared from a clay column and processed at a temperature of 35-55 ° C with ultrasound with a frequency of 15-20 KHZ for 3-5 minutes and mixed with Va-Vs parts of the coarse fraction of chamotte, after which another part of the slurry is added to the resulting mixture, processing it a flux of electrons with an energy of 150–250 MEW with a density of 10–10, fine ground chamotte and the remaining part of a large fraction of chamotte. 2. A method according to claim 1, characterized in that: in the water used for preparing the slip, triethanolamine and then salts of lignosulfonic acids are introduced beforehand.