SU1381104A1 - Raw material mixture for making heat insulation articles - Google Patents

Description

The invention relates to the industry of building materials, namely to high-temperature tenlo-insulating materials for heat insulation of industrial furnaces.

The purpose of the invention is to reduce the thermal conductivity of raw moisture products and energy consumption during their heat treatment.

The manufacture of products from the raw mix is carried out according to the following technology.

The fire fiber is preliminarily ground, which is introduced into the wood saponified resin (DLS) resin solution with a density of 1.01-1.025 g / cm. i; 3 iac in piti metal margan 1a () prepare a solution with a density of 1.03 g / cm. In a high-speed stirrer, g-h mixture of SDO solutions with fiber I HiC l B for 2-4 minutes to prepare, stabilized foam. One way or another, from a mixture of dust in a paddle gms body, with a B / T 0.8-1.5, a spy was prepared, which was mixed with foam for three to three minutes. Then in the foam mass -, G; oh, perlite and liquid glass. After g; -.rmp of all components of the mixed- painie lasts no more than 1 min. A form with removable board equipment is poured with 1 l mass. If necessary, the mass is compacted on a vibroplate. After pre-exposure and removal of the equipment, the products are heat treated at 300-350 C.

When making products, raw materials with the following characteristics were used:

dust gas purification of ferrosilicon with a specific surface of 24000-30000 cm / g, containing,%: CaO 0.42; amorphous SiO 90.54; L1 0, 0.13; Pe203 0.39; Tio 0.07; MgO 3; SOj 0.86; 0.53; 0.76; other 3.3;

py.pp gas purification of manganese metal with a specific surface area of 15000-20000 cm / g, containing,%: CaO 13.5; Si (l2 6.2; MnO + Mn 27 ;; Al.n,;, 1.5; MgO 1; SO, 3.9; P 6.15; C 10, other 35.65;

five

with

0

0 5

0 5

perlite sand with a bulk density of 100-120 kg / m, containing,%: SiO 73.75; ACO, 16.75; , 2.25; CaO 0.05; MgO 2.2; Na, 0 1.7; 3.3;

liquid glass with a density of 1.4 g / cm with a silicate module 2.75;

kaolin fiber MRTU 6- 11.102.69.

According to the described tehnolpgii manufactured products from the compositions, which are listed in table 1.

The main physicomechanical properties of thermally insulating products made on the basis of the compositions described are listed in Table. 2

The results indicate a lower thermal conductivity of samples from the proposed mixture, as well as a decrease in raw moisture products and energy consumption for heat treatment in their manufacture of 1, 6 times.

Claims (1)

Invention Formula Raw mixture for the production of heat-insulating products, including liquid glass, refractory fiber, gas cleaning dust, ferrosilicon, and gas cleaning dust of manganese metal, which also contains perlite, and resin wood saponified in the following ratio, wt.%: Liquid glass 20-25 Refractory fiber 3-5 Dust gas cleaning ferrosilicon 29-34 Dust gas cleaning metal manganese 5,95-7,97 Expanded perlite 30-40 Wood saponified resin 0.03-0.05 Table I Fireproof fiber Dust gazoochnnstn ferrosilicon Drink gas cleaning metal manganese Wood saponified resin Density, kg / m Heat conductivity coefficient, W / m С at ° С 31.5 6.96 0.04 34 5.95 0.05 Table 2 250 260 270 340