Advantage of firebrick of N-2 clay brick and executive standard

One, stick earthy and refractory products

   Argillaceous brick with clay (include the grain such as diabase, gangue brick to expect) for crucial raw material, classics pug is solved, figuration, dry impetuous and earth up burn and become. Our country developed square and strip form brick in succession in year period, what period of Chinese of the Qin Dynasty makes a brick is technical make operation, character and pattern sort often have apparent progress tendency with production, the life calls “ Qin Zhuanhan made of baked clay ” . The dimension of general brick is 240mm×115mm×53mm, press tensile strength (Newton / cubic millimeter, n/mm2) dimension is divided into MU30, MU25, MU20, MU15, MU10, MU7.5 the Ji such as these 6 compressive strength. Argillaceous brick adjust measures to local conditions, the price is low, hard usage, also have the advantage such as sex of fire prevention safety, adiabatic heat preservation, sound insulation, be affected with damp be affected with damp, apply in project of civil engineering project general. Useless brickbat head still can make the bitumen compound that mixes clay. To improve general clay brick the blemish with much ground of self-prossessed and small, especially big, bad news, suitable develop a tendency to azimuth of light qualitative concrete, tall tenacity, hollow, lumpish. Sanded, arenaceous or the pulverized limestone that grey arenaceous brick compares with be being occupied moderately and quartz are fine slate, classics mill, turn on the water agitate, half dry method restrains figuration and maintain through evaporate pressing and become. Fly ash brick is crucial raw material with coal ash, the pink such as pink of brick of waste rock of mix into coal or clay is fine arenaceous raw material, classics condiment, figuration, dry impetuous and earth up burn and become, can apply industrial waste residue neatly, economic expect like that.

1, handicraft changes index to be divided into normally (N-1) - 55, (N-2) - 48, (N-3) - a few kinds of 42 steel grade.

2, the appearance norms of handicraft accord with Gb2992-82 " the appearance norms of the application of versatility corundum brick and relevant firebrick " requirement. The brick that there was not buyer regulation in be like a standard, press production of buyer project blueprint to make.

3, the cure of doctor of traditional Chinese medicine of handicraft accord with Yb844-75 " the cure of doctor of traditional Chinese medicine of handicraft of fire prevention material and limit " requirement. Normally cent becomes bid model, general, abnormity, special model, still can make distinctly according to client regulation.

4, the argillaceous qualitative handicraft that argillaceous brick points to to Al2O3 water content is raw material of felt of aluminous fiber of 30%~40% silicon acid namely. Argillaceous brick is to use the soft model clay of 50% and grog of cement of clay of 50% good model, by must regulation of particle size distribution begins condiment, after classics figuration, dry impetuous, fire finishs in the tall of 1300~1400 ℃ .

5, of argillaceous brick mineral making a key is kaolinite (Al2O3·2SiO2·2H2O) with 6%~7% residual (the oxide of potassium, natrium, calcic, titanium, iron) . The fire whole process of argillaceous brick, the key is kaolinite lasts moisture is deliquescent change into Molaishi (3Al2O3·2SiO2) the whole process of crystallization body.

6, the SiO2 in argillaceous brick and Al2O3 are in fire whole process with residual generation in all the aluminous silicate that brilliant low dissolve nods, surround greatly crystallize in Molaishi body is circumjacent. Handicraft of material of fire prevention of acidity of argillaceous brick vest in, can resist soda acid sex is slaggy with system of steam of soda acid sex corrode, the resistance of alkaline to slanting chemical material is a bit weak. The hot character of argillaceous brick is good, be able to bear or endure urgent cold urgent heat.

The water content of argillaceous brick Al2O3 of our country is in more normally 40% the left and right sides, fe2O3 water content under 2 ～ 2.5% . Grog of the cement in condiment is 65 ～ 85% , shirt-sleeve clay is 35 ～ 15% . The cement grog of will broken shirt-sleeve clay and mill is mixed grind, configure half dry pug at the same place with grog of grain content cement again, Zuo presses figuration, fire finishs in about 1400 ℃ , characteristic and pretty good. Argillaceous brick shows acidity below tall , fight slant alkaline slaggy cankerous working ability is a bit weak, but promote along with Al2O3 water content and rise. Hear resistance relatively silica brick, magnesia brick (see magnesian qualitative brick) etc had better.

2, executive standard

GB5101-2003 " agglomeration common brick "

GB13544-2000 " agglomeration perforated brick "

GB13545-2003 " agglomeration air brick and hollow block "

GB 6566-2001 " set limit to of housing materials radionuclide "

3, manage changes target