The manufacturing technique of fireproof material

Differ according to the compact degree of goods and appearance, the manufacturing technique of fireproof material basically has gush of agglomeration law, casting method, melt to blow law and blame firing law 4 kinds.

 

(1) agglomeration law

Agglomeration law is makings of maturity of pre-burning of partial raw material, will broken with screening, press again deserve to compare certainly mix with raw material, the course shapes, dry and firing. The purpose of raw material pre-burning is among them moisture, will organic foreign matter, sulfate kind the aeriform burn off that decompose, with reducing product firing and contractive, assure the accuracy of goods over all dimension. Raw material is in broken and abrade hind still need to pass screening, because preform undertakes grading by the powdery makings of distinct size, can assure close together accumulation and obtain compact base substrate. To make the composition of all sorts of raw material and grog and grain are changed equably, want to undertake mixing refine, add bond at the same time, combine strength in order to enhance preform. If siliceous aluminium pledges preform adds combinative clay, magnesian qualitative preform joins waste liquid of sulphurous acid pulp, silicon pledges preform joins milk of lime to wait. According to how many of preform water content, can use half dry process (contain 5% moisture content about) , but model law shapes (contain 15% moisture content about) shape with the law that note an oar (contain 40% moisture) about. Undertake next dry and firing.

(2) casting method

Casting method is mix even raw material through burden and fine grind wait for working procedure, again after high temperature is fused direct casting, make product via cooling crystallization, anneal. If founding not comes,stone brick, corundum brick is mixed magnesia brick. Their base substrate is compact, mechanical intensity strength of structure of tall, high temperature is great, the sex that fight broken bits is good, scope of application is expanding ceaselessly.

(3) melt gush plays a way

Melt gush plays a way is after fusing burden, undertake with high-pressured air or overheat vapour gush is blown, the made means that becomes fiber or hollow ball dispersedly. Goods basically uses as pledge gently fireproof, heat-insulating material. In addition, still can make body of farinaceous or graininess adventitious fireproof material, face when using wait for bond cementation with tar, bitumen, cement, phosphate, sulfate or chloridize salt, do not use with agglomeration directly via shaping. Stick density of brick of earthy heat preservation

(4) blame is firing law

Blame is firing the law is one kind when appear since 20 centuries does not want the errant look with firing, small specific power consumption completely fireproof material manufactures preparation technology. Be not firing and fireproof material to use pulverous and graininess, fireproof raw material and appropriate bond classics not firing and shape.