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TGA - differentiation in cement refractory materials detection

The combination of water, when the temperature reaches a certain speed and temperature, will break down and dehydration, release of bound water, a sharp dehydration stage. The dehydration reaction is: 150 \+ H where, CAHl0, CAH7, A, AH compounds such as water,[link widoczny dla zalogowanych], CA7 is the second calcium aluminate seven places to write. hydrates the removal and decomposition of the remaining water at about 510 ℃ ~ 32lOOO a 1 ¨ c-g . ∞ g of the instruments of a well sad 3 2004 550 \the same. (2) cast aluminum material for high aggregate raw materials, the main component of alumina for water, Baume stone and kaolin. when a certain temperature, they contain break down with water or prolapse: a-AI, o3 . H,[link widoczny dla zalogowanych], 0 + a-AI, o3 + H20A12O3.0 two 7 A12O3 a AI2O3 + H20 a second 'a-A12O3 + H203 (Al, o3.2Sio3.2H2O) Second, 3AI, o3.2Sio3 +6 H20 shows , aggregate with water splitting with the experimental phase of rapid water loss is the same. (3) low cement castable material in 150 \the result of dehydration. 290 \generated. and casting materials completely dehydrated to 1200 ~ C above can be achieved. 7 In conclusion,[link widoczny dla zalogowanych], the practical application of experimental results and analysis of studies based on the low cement refractory properties of the materials to produce baked sub drying (oven ) of the heating rate curve shown in Figure 6..,, stung gift for a time t (h) Figure 6 oven heating rate curves are in Maanshan Iron and Steel factory oven pit furnace process, the application of the oven heating rate curves, obtained good results. Received :2003-10-20ApplicationofthermogravimetryintestingcementaScastablerefractory. JiGuofu (SchoolMetallur-gYandMaterial, AnhuiPolytechnicUniversity, Maanshan, 243002). ThedryingpropertyoflOW-gradecementascastablerefractorywasexaminedbythermogravimetryandthecauseofexplosionoffumacebasewasfound.Suggestionsforimprovingbaseofdryingfurnacearepresented.ThemethodhaeenusedinMaanshanIronandSteelCo.withgoodresults. copper sensitive dual-flame photometric Zhang Tao Shan Zhou Fujun determination of dichloromethane (Institute of Chemical Defense Institute Fourth Fourth, Beijing, 102205) Abstract dichloromethane in the application could easily lead to local air pollution. using sensitive dual-flame photometric determination of copper chloride, with a can real-time monitoring, the advantages of simple and accurate,[link widoczny dla zalogowanych], the linear range of 8.8 - 668pg] L. making body of copper-sensitized easy, long service life. Keywords copper sensitive dual-flame photometric analysis of dichloromethane 1 Introduction II instrument solubility of methyl chloride with a strong, non-flammable, non-photochemical reaction, low cost, is an excellent solvent and cleaning agent, should be of broad Profile: Zhang Tao Shan, Technician, mainly engaged in the environmental assessment work. for the pharmaceutical, electronic, film, food, cars, planes, machinery, leather, fiber processing industries. use,[link widoczny dla zalogowanych], rapid evaporation of dichloromethane, easily used in place of local air pollution caused by high concentrations. According to the literature, methylene chloride is The main indoor volatile organic contamination
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