Argillaceous firebrick presses main use division into districts, crucial component uses argillaceous firebrick into blast furnace, hot-blast stove uses argillaceous firebrick, furnace of sandwich glass kiln is large and medium-sized argillaceous firebrick.
1. blast furnace uses argillaceous firebrick
Blast furnace wants what make for raw material production with saggar to be used at the clay brick of the line in blast furnace of wall of build by laying bricks or stones with argillaceous firebrick. The furnace larynx that blast furnace uses lining of small blast furnace of argillaceous firebrick in order to, shaft, crucible, hearth reachs shaft of big blast furnace.
Blast furnace stipulates with argillaceous firebrick compressive strength of data of the fire prevention below normal temperature is high, can resist melt down flotsam is long-term sexual job attaint; In tall long-term sex job issues cubage furl small, be beneficial to lining to maintain comprehensive sex; Show hole rate is low with Fe: O. Water content is low, reduce carbolic element factory to pile up in giving air hole, prevent firebrick to Peng Zhangsong comes loose and be destroyed in using whole process; Generation of other people of low dissolve drop is little. Blast furnace is compared with argillaceous firebrick normally clay brick has high grade character.
Mark of our country smelt metal (YB/T 5050-1993) converts blast furnace index to be divided into ZGN-42 and GN-42 normally with argillaceous firebrick 2
Kind steel grade.
Blast furnace cracks with the traverse facing of argillaceous firebrick have give out requirement:
(When 1) layer cracks beam overall not to exceed 0.25mm, accident not demarcate;
(When 2) layer cracks beam overall to be 0.26 ～ 0.5mm, accident does not exceed 15mm;
(When 3) layer cracks beam overall to exceed 0.50mm, prohibit having.
The cross section crack of argillaceous firebrick has give out requirement:
(When 1) layer cracks beam overall not to exceed 0.25mm, accident not demarcate;
(2) layer cracks beam overall to be 0.26 ～ 0. When 50mm, accident does not exceed 40mm;
(When 3) layer cracks beam overall to exceed 0.5mm, prohibit having.
2. hot-blast stove uses argillaceous firebrick
Hot-blast stove should be raw material to make the extraction clay brick that is used at hot-blast stove of blast furnace of wall of build by laying bricks or stones with saggar with clay brick. Hot-blast stove uses hot-blast stove of clay brick in order to, store hot cell and partition wall. Hot-blast stove stipulates with clay brick heat-resisting shake sex is strong, load molten is spent tall, stress is flabby small.
Mark of our country smelt metal (YB/T 5107-1993) pledges hot-blast stove firebrick changes index to be divided into RN-42, RN-40 and RN-36 3 to plant normally with clay steel grade. Its manage changes index, specification concessional error has give out requirement:
(When 1) layer cracks beam overall not to exceed 0.25mm, accident not demarcate;
(2) layer cracks beam overall to be 0.26 ～ 0. When 50mm, accident does not exceed 30mm;
(When 3) layer cracks beam overall to exceed 0.50mm, prohibit having.
Furnace of 3. sandwich glass kiln is large and medium-sized argillaceous firebrick
Furnace of sandwich glass kiln is large and medium-sized clay pledges firebrick is wall of build by laying bricks or stones of in order to the sheet of furnace of sandwich glass kiln is heavy not the argillaceous firebrick under 50kg. Mark of our country smelt metal (YB/T 5108-1993) asked furnace of sandwich glass kiln is large and medium-sized the manage that sticks earthy firebrick changes index, specification concessional error and exterior.
The traverse facing that this standard returns pair of bricks cracks waited for the following requirement:
(The traverse facing of 1) brick cracks:
The brick of 1) accident ≤400mm: The layer cracks beam overall when 0.26 ～ 0.50mm, accident does not exceed 40mm; The layer cracks beam overall 0.51
When ～ Lmm, accident does not exceed 25mm.
2) accident > the brick of 400mm: The layer cracks beam overall 0.26, when 0.50mm, accident not. Exceed 80mm; The layer cracks beam overall when 0.51 ～ 1mm, accident does not exceed 50mm.
(2) layer cracks beam overall the crack under 0.25mm, accident not demarcate.
(There cannot be the porosity that exceeds 1mm and crack on 3) cross section.
In actual engineering work, hot-blast stove build by laying bricks or stones builds adoption firebrick variety to have a lot of, specific following place show:
1, low creep series
This series firebrick basically is brick of low creep tall aluminium and brick of low creep clay in what apply on hot-blast stove.
1) hot-blast stove uses brick of low creep clay
Brick of low creep clay is main raw material with grog of high grade clay, classics high pressure shapes, high temperature agglomeration and into, temperature of product loading bate is high, lukewarm creep sex is good in fighting, impact resistance is good, it is the main and fireproof material of place of the low temperature in hot-blast stove.
2) brick of low creep tall aluminium
Brick of low creep tall aluminium is with frit of corundum of frit of fancy alumina, report, report Molaishi gives priority to the advanced and fireproof material that wants raw material to be made. The product is had fireproof degree tall, loading bate temperature is high, fight broken bits sex to wait for a characteristic by force.
2, hot-blast stove uses silica brick
Hot-blast stove uses silica brick is the silicon that gives priority to brilliant photograph with scale quartz qualitative refractory products. Its basically are built by build by laying bricks or stones at place of high temperature of blast furnace hot-blast stove. Hot-blast stove silica brick has sex of bulk stability, low creep, heatproof shake it is good, good to fight chemical aggressivity wait for heat.
3, hot-blast stove uses andalusite brick
Hot-blast stove uses andalusite brick is silicon aluminium the high-grade firebrick in fastening fireproof material, its have first-rate heatproof shake stability to be able to be mixed fight creep function. Basically be used at the crucial position such as furnace door of sirocco exit, hot-blast stove.
4, hot-blast stove uses tall aluminous adiabatic brick
Tall aluminous adiabatic brick uses bubble law to produce craft to make, have bulk density small, compression intensity is high, loading bate is tall, dimension common difference is little, thermal stability can be excellent wait for an advantage, can improve thermal efficiency effectively, reduce specific power consumption, improve labor condition, improve manufacturing efficiency, obtain considerable economic benefits. Its basically are used at place of hot-blast stove thermal insulation to make.
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