The fireproof spray paint that we use currently is the fireproof compound that uses spray law to undertake spray construction with tornado type spraying machine. It is to be in fireproof and pouring undertake developing on the foundation of makings. Below, make us specific know this kind of fireproof stuff.
Fireproof spray paint is a kind with handiwork or mechanical eject at other the indeterminate form of fireproof material surface is fireproof material. Expect by the fireproof aggregate of certain grain grading, pink, add proper bond, additive (if hurried coagulates agent, plasticizer, expander) composition, mediate with water or other liquid bond use.
The making technology of fireproof spray paint is quite flexible, it can use all sorts of fireproof raw material to be comprised according to scientific basis freedom, we can divide character according to its material for:
1, corundum pledges spray expects: Make raw material with corundum namely, its Al2O3 content is more than 90 % commonly;
2, aluminous silicon pledges spray expects: The content that inspect aluminium and place differ to be able to be divided again with raw material for Molaishi qualitative spray expects (bake with report or agglomeration Mo Laishi makes raw material) , paint of tall aluminous qualitative spray (make raw material with aluminous grog) , paint of argillaceous qualitative spray (make main raw material with Jiao Baoshi) ;
3, silicon pledges spray expects: Make raw material with silica, its SiO2 content is in 90 % above;
4, paint of magnesian qualitative spray: Use agglomeration or electric frit magnesia to make raw material, its MgO content is more than 80 % normally.
In addition, if make the aggregate, gush coating that makes up for matrix with magnesia pink and chromic mine pink with magnesia, pledge for magnesian chromium spray expects;
The spray that is like matrix to be comprised by magnesia pink and aluminous pink expects, pledge for magnalium spray expects.
With aluminous grog, or Molaishi, or corundum is aggregate, in matrix (or little grain part) the spray paint that joins pink of stone of right amount zirconium to make up, call aluminous zirconium to pledge spray expects. Still makings of qualitative spray of carborundum spray paint, pointed spar waits.
Uses bond has: Mud of aluminous acerbity brine, phosphate, get together phosphate, slant the material such as phosphate, vitriolic magnesium, magnesium chloride, vitriolic natrium, siliceous natrium. To acquire good construction property, join normally right amount but model clay. With other adventitious form fireproof data phase is compared, main difference deserves to compare in grain, minim additive and the quantity that add water.
Rong Cheng is below arrange of two kinds of when fireproof miller should produce fireproof spray changes target:
Change index to pursue according to fireproof spray arrange we can see, FN-130 and FN-140 of two kinds of products fireproof degree extremely tall, gao Keda arrived 1620 ℃ , in the meantime, fireproof temperature also is in when their length 1400 ℃ left and right sides, two kinds of products with good quality are belonged to in product of fireproof spray paint.
This kind of material has certain plasticity, show cream shape. Ask this kind of material has the higher intensity, admirable aggressivity that fights fuse-element or gas normally, good daub sex and with by the adherent sex of protective material, fight thermal shock sex and chemical stability goodly, in using not craze, do not flake, do not wait for a characteristic with reaction of the chemistry since material of the mother's body.
Fireproof spray paint is a lot of more phyletic, function difference is very big, but altogether, we are general its covering layer as the surface inside housing of blast furnace, hot-blast stove and head of blast furnace furnace, gas derive the working liner of canal, dust catcher.