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《Coal Science and Technology》 2015-01
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Influence of inhibitor to primary and secondary oxidation features of residual coal in goaf

DENG Jun;AI Shao-wu;MA Li;HU An-peng;REN Li-feng;LI Bei;School of Energy,Xi'an University of Science and Technology;MOE Key Lab of Mining and Disaster Prevention and Control in Western Mine,Xi'an University of Science and Technology;  
In order to understand an inhibitor affected to the coal spontaneous combustion,based on a programmed temperature rise experiment of the coal spontaneous combustion,primary oxidation and secondary oxidation spontaneous combustion feature parameters of the residual coal in goaf were tested and measured after the inhibition with CaCl2,Mg Cl2,NH4Cl and NH4H2PO3. The results showed that the inhibition effect of the inhibitor to the primary oxidized coal sample was NH4ClCa Cl2Mg Cl2NH4H2PO3in sequence and the inhibition effect of the inhibitor to the secondary oxidized coal sample was NH4ClNH4H2PO3Ca Cl2MgCl2 in sequence. The φ( CO) / φ( CO2) and inflexion temperature of the coal sample after inhibition would be reduced in comparison with raw coal sample. When the temperature was at 30 ~ 103 ℃,the inhibition role of the inhibitor was conducted on the primary and secondary oxidation and secondary oxidation residual coal in goaf. When the temperature was at 103 ~ 140 ℃,a promotion role of the inhibitor was conducted on the primary and secondary oxidation and secondary oxidation residual coal in goaf.
【Fund】: 国家自然科学青年基金资助项目(51304135);; 西安科技大学培育基金资助项目(201353)
【CateGory Index】: TD752.2
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