Build Daily

Wall Materials

August 12, 2017 18:05

aluminous brick

click fraud protection

refractory bricks used in the facilities, structures, subject to periodic or continuous exposure to high temperatures.In particular, they are used in the regeneration of stoves, fireplaces, chimneys, heating installations diverse.To date, there are several varieties of refractory products, among which occupies a special place fireclay bricks, which is considered the most relevant and popular.Externally, fireclay brick is easily recognizable: it has a special color is yellowish-sandy color, and its structure - homogeneous grain.

Content

  1. production technology
  2. Dimensions and weight
  3. Specifications firebrick
  4. Species
  5. Marking firebrick
  6. Benefits
  7. Disadvantages
  8. Video

technology

production

fireclay refractory bricks produced by exposure to high temperatures in the mixture, the main component of which is milled burnt fire clay (grog), and a mixture of graphite and coke powder with the addition of quartz Coarsely.The addition of Al2O3 aluminum oxide in the mixture influences the fire resistance, resistance to aggressive environments, porosity, thermal conductivity level of fireclay products.

fireclay brick production technology involves forming and firing the raw material mixture in a strictly controlled, high temperature for a certain time.Too soon interrupted by the firing of fireclay bricks could cause their lack of strength qualities, and product overexposed in the furnace become glassy surface structure, which causes them to be discarded.

Dimensions and weight

values ​​of size, weight, composition, and performance specifications as the standards regulated by state standards GOST 390-96 (mainly brick for use in industry), and their own specifications from different manufacturers(for use in housing construction).

The most common types:

  • SB-5 (230h65h114 mm; 3.4 kg);
  • SB-8 (250h65h124 mm; 4.0 kg).

Specifications firebrick

Depending on the brand and manufacturer of material characteristics may include the following:

  • fire resistance 1100 - 1800 ° C;
  • densities: 1700 - 1900 kg / m³;
  • value of thermal conductivity: 0.6 W / m · ° C;
  • marking strength: M75 - 250;
  • frost markings: F15 - 50;
  • indicator of thermal capacity: 1.04 kJ / kg · ° C;
  • value of the coefficient of linear expansion α, 10-6 / ° C: 5,3.

Species

Despite the fact that the most popular today remains Fireclay refractory bricks in the form of a cuboid, the majority of plants in an effort to meet market demand, producing chamotte products of various shapes.

Form firebrick:

  • straight;
  • wedge;
  • trapezoidal;
  • arch.

Commercially available products have a wide range of degrees of density, from very dense type (with a porosity of up to 3%) to ultra lightweight units (with a porosity of 85%).

According to the molding method, fireclay bricks are:

  • cast from the slurry;
  • molded semi-dry or plastic methods;
  • processed;
  • termoplastichnopressovannye;
  • hot-pressed.

Marking firebrick

  • marking SHA , SB , Shack products have universal application, which are mainly used by private builders for display stoves and fireplaces;
  • marking SHUS , BC indicates that the corresponding data marks the bricks used in the industry for the lining of the walls of the convective mine;
  • products labeled PB used for domestic purposes (for example, everything for home furnaces, barbecue);
  • fireclay marked PV acceptable to use during computation wall fireplaces, chimneys;
  • fireclay brick HQ used in the construction of industrial units;
  • marking SHL applied to lightweight fireclay bricks used for lining of various furnaces, heating temperature readings which - maximum 1300 ° C;
  • letters SHTSU marked bilateral end products used in the computation of rotating furnace installations.

Benefits

  • increased strength;
  • high fire resistance;
  • high heat capacity;
  • sufficient resistance to all sorts of negative influences of the environment;
  • opportunity trouble-free operation without deformation and wear for years;
  • thanks to smooth, dense surface, the possibility of the device fireplaces and stoves without subsequent finishing.

Disadvantages

  • blocks fireclay bricks, because of its high strength, extremely poorly to cutting;
  • very high cost;
  • styling needs a special solution;
  • masonry structures made of firebrick should perform exceptionally qualified professional.

methods of application, methods of stacking, options structures, constructed of fireclay bricks, displayed on a photo and video materials.Excellent feedback from builders and customers, who have experience of exploitation and application of structures of fireclay bricks, make it an indispensable material in the construction of various objects and structures.

Video

instagram viewer