Fingerprints of two varieties of rice and their mixtures were investigated by a nonlinear chemical reaction system consisting of rice components,sodium bromate,manganese sulfate,sulfuric acid and acetone.The variety o...Fingerprints of two varieties of rice and their mixtures were investigated by a nonlinear chemical reaction system consisting of rice components,sodium bromate,manganese sulfate,sulfuric acid and acetone.The variety of rice was identified by the visual characteristic of fingerprint and system similarity pattern recognition,and the content of each variety of rice in the mixture was determined by the quantitative information of fingerprint.The results show that nonlinear chemical analysis may be used to exactly identify the variety of pure rice and to accurately determine the content of each variety of rice in the mixture,indicating the method is simple and convenient.展开更多
The chemical,physical,thermal and texture properties of iron ores from different regions of Odisha and Chhattisgarh regions,India,have been investigated to understand the compositional variations of Fe,Al2O3,SiO2,S an...The chemical,physical,thermal and texture properties of iron ores from different regions of Odisha and Chhattisgarh regions,India,have been investigated to understand the compositional variations of Fe,Al2O3,SiO2,S and P.They were analyzed for its susceptibility to meet the industrial requirements,for various iron manufacture techniques.Chemical analysis indicated that the majority of the iron ores is rich in hematite(>90wt%),poor in gangue(<4.09wt%SiO2and<3.8wt%Al2O3)and deleterious elements(P<0.065wt%and S<0.016wt%)in all these iron ores found to be low.XRD peaks reviled that the gangue is in the form of kaolinite and quartz,and same was observed in Fourier transform infrared(FTIR)spectroscopy in the range of914to1034cm–1.The iron ores were found to have excellent physical properties exemplify with tumbler index(82wt%–91wt%),abrasion index(1.27wt%–4.87wt%)and shatter index(0.87wt%–1.64wt%).FTIR and thermal analysis were performed to assimilate the analysis interpolations.It was found that these iron ores exhibit three endothermic reactions,which are dehydration below447K with mass loss of0.13wt%to1.7wt%,dehydroxylation at525–609K with mass loss of1.09wt%–4.49wt%and decomposition of aluminosilicates at597–850K with mass loss of0.13wt%–1.15wt%.From this study,we can conclude that due to its excellent physico-chemical characteristics,these iron ores are suitable for BF and DRI operations.展开更多
基金Project(61533021) supported by the National Natural Science Foundation of China
文摘Fingerprints of two varieties of rice and their mixtures were investigated by a nonlinear chemical reaction system consisting of rice components,sodium bromate,manganese sulfate,sulfuric acid and acetone.The variety of rice was identified by the visual characteristic of fingerprint and system similarity pattern recognition,and the content of each variety of rice in the mixture was determined by the quantitative information of fingerprint.The results show that nonlinear chemical analysis may be used to exactly identify the variety of pure rice and to accurately determine the content of each variety of rice in the mixture,indicating the method is simple and convenient.
基金Project supported by the National Institute of Technology,Rourkela,India
文摘The chemical,physical,thermal and texture properties of iron ores from different regions of Odisha and Chhattisgarh regions,India,have been investigated to understand the compositional variations of Fe,Al2O3,SiO2,S and P.They were analyzed for its susceptibility to meet the industrial requirements,for various iron manufacture techniques.Chemical analysis indicated that the majority of the iron ores is rich in hematite(>90wt%),poor in gangue(<4.09wt%SiO2and<3.8wt%Al2O3)and deleterious elements(P<0.065wt%and S<0.016wt%)in all these iron ores found to be low.XRD peaks reviled that the gangue is in the form of kaolinite and quartz,and same was observed in Fourier transform infrared(FTIR)spectroscopy in the range of914to1034cm–1.The iron ores were found to have excellent physical properties exemplify with tumbler index(82wt%–91wt%),abrasion index(1.27wt%–4.87wt%)and shatter index(0.87wt%–1.64wt%).FTIR and thermal analysis were performed to assimilate the analysis interpolations.It was found that these iron ores exhibit three endothermic reactions,which are dehydration below447K with mass loss of0.13wt%to1.7wt%,dehydroxylation at525–609K with mass loss of1.09wt%–4.49wt%and decomposition of aluminosilicates at597–850K with mass loss of0.13wt%–1.15wt%.From this study,we can conclude that due to its excellent physico-chemical characteristics,these iron ores are suitable for BF and DRI operations.
