SU833768A1 - Ceramic mass for making canalization pipes - Google Patents

Description

(54) CERAMIC MASS FOR THE MANUFACTURE OF SEWERAGE

PIPE conductive refractory or refractory clay, fireclay or dehydrated clay and ash from coal, comprising a magnetic fraction of fly ash coal in the following ratio, wt.%: Clay refractory or refractory clay or 62-64 dehydrating shamot32-36 The magnetic ash fraction kamennougolnoy2-4 magnetic fraction coal ash is a fine powder with a grain size from 0.015 to 0.16 mm, separated from the ash by magnetic separation, due to which the carbon-containing part is excluded. ols in Clay paste composition, and thereby preventing microporosity in .sozdanie keramiches com shard guide adversely affect n waterproofness and mechanical strength of the finished articles. All the components of the mass are thoroughly mixed, moistened and passed through a clay. Pipes with an internal diameter of 100 mm and a length of 500-550 mm are molded into a vacuum press from the resulting wad. The mold moisture content of the ceramic masses is 18%, the depression in the vacuum chamber of the press is 700 mm Hg. Then the pipes are installed on the basement in the workshop at 20-22 ° C for 48 hours. The humidity of the pipes after the basement is 15-16%. The pipes are glazed with a head made of Rechitsa ceramics pipe mill.

Table 1 8A The pipes are dried in a countercurrent tunnel dryer in the following mode: Flow temperature 65-70 ° C Heat carrier Relative humidity 75-80% heat carrier Heat waste 30-35 ° C heat exchanger 28 h Drying time Roasting pipes produced in a periodic gas furnace . The rate of temperature rise up to 30 ° C per hour, from 300NC to 1100-1150 ° C - 50 ° C per hour, holding at a maximum temperature of 2 hours. In tab. 1 presents the proposed: and known compositions of the masses for the manufacture of ceramic pipes. In tab. 2 shows the properties of the proposed and known compositions of the masses. As can be seen from the table. 2, the proposed ceramic mass, which includes the addition of a magnetic fraction of coal ash, makes it possible to increase the water resistance of sewage pipes and at the same time to increase their mechanical strength. Pipes on the basis of ceramic mass, containing a magnetic fraction of coal ash, not only meet, but also exceed the requirements of GOST 286-74 Ceramic sewer pipes for waterproofing. The high water tightness and mechanical strength of the sewage pipes, obtained on the basis of the proposed ceramic mass, can significantly improve the quality of pipes, increase their service life and reduce the waste production by 1015%.

Clay refractory or refractory, dehydrated clay Shamot 62

Magnetic fraction of coal ash;

Coal ash

Continued table. one

7.5

table 2

Claims (2)

Claim Ceramic material for the manufacture of sewer pipes, including refractory or refractory clay, dehydrated clay or fireclay and. coal ash, with the fact that, in order to increase the water resistance and mechanical strength of the pipes, it contains a magnetic fraction of coal ash in the following ratio of compo. nents in wt.%: Refractory or refractory clay Dehydrated clay or fireclay 62-64 32-36 VNIIIPI Order 3922/30 Magnetic fraction of coal ash 2-4