What is the difference between ordinary slag wool rock wool board and basalt rock wool board?
Although rock wool and cotton products belong to CaO-Al2O3-SiO2 Portland slag system, but because of differences in their chemical composition on (Table 2), making them the phase composition of crystallization point falls in different regions in the CaO-Al2O3-SiO2 three phase diagram (Figure 1). From table 2 and figure 1 shows that the rock composition point (4, 5, 6 in the figure) are located on the 2 wollastonite gehetinite 2 calcium feldspar crystallization zone (CS-C2AS-CAS2 zone), the solid phase will have the three crystalline phase because of wollastonite, gehetinite, calcium do not have hard water feldspar characteristics, the water change is very small, the rock wool has good water resistance.
Rock wool and slag wool, chemical composition and acidity coefficient comparison in our country, the main raw material for blast furnace slag slag cotton general or other metallurgical slag, the main raw material for rock wool basalt or diabase, the chemical composition of the differences between them are larger (
Rock wool and slag cotton belong to mineral cotton, and they have many similarities in the production process, fiber morphology, alkali resistance, thermal conductivity and non combustibility. People usually referred to as mineral wool rock wool and slag wool, so easy as the two are the same thing, even thought that the slag wool color white, gray green wool is more than "pure", this is a misunderstanding. Although they are all mineral cotton, there are still some differences that can not be ignored. The main reason for these differences is the composition of the ingredients.
