[Soda Ash Knowledge] Daily Question (80) 12/22/2009
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Fill-in-the-blank question 7. The CO2 in kiln gas mainly comes from ( ) and ( ). 8. The limestone decomposition reaction is a ( ). 9. Excessive variation in limestone sizes can cause ( ) to occur simultaneously. Please hide the replies; no scoring will be given in principle if they are not hidden. Specific hiding method: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8
7. CaCO3 decomposes to produce CO2; CO2 is also produced by the combustion of fuels. 8. Endothermic reactions. 9. Underburning and overburning
7. Limestone, air 8. Chemical reactions 9. Other combination reactions
7. Calcium carbonate decomposes to produce carbon dioxide, and fuel combustion also produces carbon dioxide； 8. Endothermic reactions ； 9. Underburning and overburning
7. The CO2 in kiln gas mainly comes from (the decomposition of limestone) and (the combustion of carbon in the fuel). 8. The decomposition reaction of limestone is a (CaCO3 = CaO + CO2). 9. Excessive variation in limestone sizes can cause ( ) to occur simultaneously.
1. CaCO3 decomposes to produce CO2; CO2 is also produced by the combustion of fuels. 2. Endothermic reaction. 3. Green burning and overheating
7 Decomposition of calcium carbonate, fuel combustion 8 Endothermic reactions 9 Underburning and overburning
7. CACO3 decomposes to produce CO2; CO2 is also produced by the combustion of fuels. 8. Endothermic reactions. 9. Underburning and overburning
7. The CO2 in kiln gas mainly comes from (CO2 produced by the decomposition of CaCO3) and (CO2 produced by fuel combustion). 8. The decomposition reaction of limestone is an (endothermic reaction). 9. Excessive variation in limestone lumps can cause both underburning and overburning to occur simultaneously.
7.CaCO3 decomposes to produce CO2, and fuel combustion produces CO2； 8. Endothermic reactions ； 9. Underburning and overburning
7.CaCO3 decomposes to produce CO2, and fuel combustion produces CO2； 8. Endothermic reactions ； 9. Underburning and overburning. 1# chen3jun