SU36892A1 - The method of preparation of refractory lining mass - Google Patents

Description

The refractory lining mass obtained by the proposed method is a mechanical mixture consisting of activated and inert substances. Activated substances included in the composition of the mass include refractory clay, ground to a powder, and andesite-eruptive volcanic rock, large deposits of which are located on Mount Kazbek in the Caucasus. The inert substance in the mass is a fire-resistant chamotte brick, crushed to grain size 3-3.5 mm.

The use of andesite as a flux is caused by the fact that it practically does not expand (having an expansion coefficient to 0.00000925) at high temperatures, which gives chamotte particles a possibility of unhindered expansion, as a result of which inside the mass there are no forces leading to its cracking. and falling away from the surface covered by it.

The above substances, in appropriate quantities, namely; refractory clay.-1.5 parts by volume (Z7.6%) in plastics, in a refractory chamotte -1.5 volume

(Bb5)

parts (37.5ii), grain size from 3 to 3.5 mm, and andesite-1 volume part (25%), grain size from 2 to 2.5 mm, mixed to obtain a homogeneous mass. Thereafter, water is added to the mass only to set the particles together, since an excessive amount of water during the solidification process, turning into a vaporous state, creates pressure inside the mass, and as it increases, surpasses the mass strength at the moment of setting, breaks it, going out, thus forming cracks, which leads to the possibility of falling away from the coated surface.

The mass, so-called in this way, is applied using hand throws to a clean surface so that internal cavities do not form in an even layer, approximately 3-4 cm, after which, to remove the residual moisture always present in it, the mass is dried either by natural drying or for acceleration, with twin bulbs or autogen. Cover with repeated layers in a similar way to achieve the desired thickness, and, after that, level the surface

with a trowel or trowel, ps-luayh rojOfy.K) fireproof surface.

Massacre can be used for refractory lining of boilers, for protective insulating coating of pipes, drums on boiler surfaces, used by hot flue gases and against corrosive metal that has burnt and contained

in gases it is gray, it is especially important: in the places of folding of pipes.

P 1) e d1 of the invention.

The method of combining footsweeten mass of shlough clay mixtures, characterized in that, HTG as an application flux andea1a.