Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting

A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammoni...
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Gespeichert in:

Autor*in:	Zhang, Meng-ping [verfasserIn] Liu, Chen-hui [verfasserIn] Zhu, Xiong-jin [verfasserIn] Xiong, Hua-bin [verfasserIn] Zhang, Li-bo [verfasserIn] Gao, Ji-yun [verfasserIn] Liu, Man-hong [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	Molybdenum concentrate Microwave roasting Conventional roasting (NH

Übergeordnetes Werk:	Enthalten in: Chemical engineering and processing - Amsterdam [u.a.] : Elsevier, 1984, 167
Übergeordnetes Werk:	volume:167

DOI / URN:	10.1016/j.cep.2021.108550

Katalog-ID:	ELV006349927

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245	1	0	\|a Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting
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520			\|a A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability.
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publishDate	2021
allfields	10.1016/j.cep.2021.108550 doi (DE-627)ELV006349927 (ELSEVIER)S0255-2701(21)00246-4 DE-627 ger DE-627 rda eng 660 DE-600 58.17 bkl Zhang, Meng-ping verfasserin aut Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability. Molybdenum concentrate Microwave roasting Conventional roasting (NH Liu, Chen-hui verfasserin aut Zhu, Xiong-jin verfasserin aut Xiong, Hua-bin verfasserin aut Zhang, Li-bo verfasserin aut Gao, Ji-yun verfasserin aut Liu, Man-hong verfasserin aut Enthalten in Chemical engineering and processing Amsterdam [u.a.] : Elsevier, 1984 167 Online-Ressource (DE-627)320508803 (DE-600)2013149-5 (DE-576)094504075 nnns volume:167 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.17 Chemische Prozesstechnik AR 167
spelling	10.1016/j.cep.2021.108550 doi (DE-627)ELV006349927 (ELSEVIER)S0255-2701(21)00246-4 DE-627 ger DE-627 rda eng 660 DE-600 58.17 bkl Zhang, Meng-ping verfasserin aut Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability. Molybdenum concentrate Microwave roasting Conventional roasting (NH Liu, Chen-hui verfasserin aut Zhu, Xiong-jin verfasserin aut Xiong, Hua-bin verfasserin aut Zhang, Li-bo verfasserin aut Gao, Ji-yun verfasserin aut Liu, Man-hong verfasserin aut Enthalten in Chemical engineering and processing Amsterdam [u.a.] : Elsevier, 1984 167 Online-Ressource (DE-627)320508803 (DE-600)2013149-5 (DE-576)094504075 nnns volume:167 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.17 Chemische Prozesstechnik AR 167
allfields_unstemmed	10.1016/j.cep.2021.108550 doi (DE-627)ELV006349927 (ELSEVIER)S0255-2701(21)00246-4 DE-627 ger DE-627 rda eng 660 DE-600 58.17 bkl Zhang, Meng-ping verfasserin aut Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability. Molybdenum concentrate Microwave roasting Conventional roasting (NH Liu, Chen-hui verfasserin aut Zhu, Xiong-jin verfasserin aut Xiong, Hua-bin verfasserin aut Zhang, Li-bo verfasserin aut Gao, Ji-yun verfasserin aut Liu, Man-hong verfasserin aut Enthalten in Chemical engineering and processing Amsterdam [u.a.] : Elsevier, 1984 167 Online-Ressource (DE-627)320508803 (DE-600)2013149-5 (DE-576)094504075 nnns volume:167 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.17 Chemische Prozesstechnik AR 167
allfieldsGer	10.1016/j.cep.2021.108550 doi (DE-627)ELV006349927 (ELSEVIER)S0255-2701(21)00246-4 DE-627 ger DE-627 rda eng 660 DE-600 58.17 bkl Zhang, Meng-ping verfasserin aut Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability. Molybdenum concentrate Microwave roasting Conventional roasting (NH Liu, Chen-hui verfasserin aut Zhu, Xiong-jin verfasserin aut Xiong, Hua-bin verfasserin aut Zhang, Li-bo verfasserin aut Gao, Ji-yun verfasserin aut Liu, Man-hong verfasserin aut Enthalten in Chemical engineering and processing Amsterdam [u.a.] : Elsevier, 1984 167 Online-Ressource (DE-627)320508803 (DE-600)2013149-5 (DE-576)094504075 nnns volume:167 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.17 Chemische Prozesstechnik AR 167
allfieldsSound	10.1016/j.cep.2021.108550 doi (DE-627)ELV006349927 (ELSEVIER)S0255-2701(21)00246-4 DE-627 ger DE-627 rda eng 660 DE-600 58.17 bkl Zhang, Meng-ping verfasserin aut Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting 2021 nicht spezifiziert zzz rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability. Molybdenum concentrate Microwave roasting Conventional roasting (NH Liu, Chen-hui verfasserin aut Zhu, Xiong-jin verfasserin aut Xiong, Hua-bin verfasserin aut Zhang, Li-bo verfasserin aut Gao, Ji-yun verfasserin aut Liu, Man-hong verfasserin aut Enthalten in Chemical engineering and processing Amsterdam [u.a.] : Elsevier, 1984 167 Online-Ressource (DE-627)320508803 (DE-600)2013149-5 (DE-576)094504075 nnns volume:167 GBV_USEFLAG_U SYSFLAG_U GBV_ELV SSG-OLC-PHA GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_105 GBV_ILN_110 GBV_ILN_150 GBV_ILN_151 GBV_ILN_224 GBV_ILN_370 GBV_ILN_602 GBV_ILN_702 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2008 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2027 GBV_ILN_2034 GBV_ILN_2038 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2056 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2088 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2118 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2190 GBV_ILN_2336 GBV_ILN_2470 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4326 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4393 58.17 Chemische Prozesstechnik AR 167
language	English
source	Enthalten in Chemical engineering and processing 167 volume:167
sourceStr	Enthalten in Chemical engineering and processing 167 volume:167
format_phy_str_mv	Article
bklname	Chemische Prozesstechnik
institution	findex.gbv.de
topic_facet	Molybdenum concentrate Microwave roasting Conventional roasting (NH
dewey-raw	660
isfreeaccess_bool	false
container_title	Chemical engineering and processing
authorswithroles_txt_mv	Zhang, Meng-ping @@aut@@ Liu, Chen-hui @@aut@@ Zhu, Xiong-jin @@aut@@ Xiong, Hua-bin @@aut@@ Zhang, Li-bo @@aut@@ Gao, Ji-yun @@aut@@ Liu, Man-hong @@aut@@
publishDateDaySort_date	2021-01-01T00:00:00Z
hierarchy_top_id	320508803
dewey-sort	3660
id	ELV006349927
language_de	englisch
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author	Zhang, Meng-ping
spellingShingle	Zhang, Meng-ping ddc 660 bkl 58.17 misc Molybdenum concentrate misc Microwave roasting misc Conventional roasting misc (NH Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting
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topic_title	660 DE-600 58.17 bkl Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting Molybdenum concentrate Microwave roasting Conventional roasting (NH
topic	ddc 660 bkl 58.17 misc Molybdenum concentrate misc Microwave roasting misc Conventional roasting misc (NH
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title	Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting
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title_full	Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting
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author_browse	Zhang, Meng-ping Liu, Chen-hui Zhu, Xiong-jin Xiong, Hua-bin Zhang, Li-bo Gao, Ji-yun Liu, Man-hong
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author-letter	Zhang, Meng-ping
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title_sort	preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: a comparison of microwave roasting and conventional roasting
title_auth	Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting
abstract	A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability.
abstractGer	A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability.
abstract_unstemmed	A novel and efficient microwave oxidation roasting method for preparing ammonium molybdate from molybdenum concentrate has been proposed and compared with the conventional roasting. TG-DTG, XRD, SEM-EDS, EDX and FTIR methods were used for characterization and analysis of oxidation roasting of ammonium molybdate. Based on the results of thermodynamic and dielectric properties of molybdenum concentrate, the effects of roasting temperature, roasting time, material mass and microwave power density on the oxidation degree of molybdenum concentrate were investigated. The influence of leaching agent, the concentrations of nitric acid and ammonia water on the leaching of ammonium molybdate was investigated. Under the same roasting conditions, the degree of oxidation of molybdenum concentrate by microwave roasting was higher than that of conventional roasting. Microwave roasting reduce the heating time of 30 min to reaction temperature and save 2.0 kW/h power in each roasting experiment. The optimal roasting and leaching conditions are as follows: roasting temperature of 600°C, roasting time of 2 h, power density of 100 W/g, nitric acid concentration of 0.80 mol/L, ammonia concentration of 25%. The purity and crystallinity of (NH4)6Mo7O24∙4H2O prepared by microwave roasting molybdenum concentrate are higher and better stability.
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title_short	Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting
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author2	Liu, Chen-hui Zhu, Xiong-jin Xiong, Hua-bin Zhang, Li-bo Gao, Ji-yun Liu, Man-hong
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up_date	2024-07-06T21:04:50.111Z
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Preparation of ammonium molybdate by oxidation roasting of molybdenum concentrate: A comparison of microwave roasting and conventional roasting

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