高铁高砂煤矸石除铁及碱融活化合成4A分子筛

Abstract

Abstract: Poor quality gangue with high iron and silica contents was treated to remove iron impurity by acid leaching and activated by sodium carbonate melting，the iron removal ratio was up to 96.8%.Kaolinite and silica were activated completely,and gangue turned into intermediate product nepheline (NaAlSiO₄) and active metakaolinite,4A molecular sieves were obtained by hydrothermal crystallization.Green ore,pretreated material,and products were characterized by XRF,XRD and SEM etc..Results showed that the products were pure 4A molecular sieve with particle size less than 2 μm and the Ca²⁺ ion exchange capacity of dry product was 295.5 mg CaCO³/g.

Key words: gangue, iron removal, alkali melting, 4A molecular sieve

CLC Number:

TQ132.32

KONG De-Shun, WU Hong, BI Ying-Xin. Synthesis of 4A molecular sieves from gangue with high iron and silica contents by iron removal and alkali melting activation[J]. INORGANICCHEMICALSINDUSTRY, 2011, 43(5): 52-.

[1]	Liu Xiaoting,Wen Jiuran,Wang Siyu,Liu Kaiping,Gao Ni,Zhong Jiaqiang. Study on strengthening technology of raw coal gangue aggregate [J]. Inorganic Chemicals Industry, 2020, 52(4): 65-71.
[2]	Yang Quancheng,Gong Zhiming,Mao Yanyu,Li Xiaodong,Zhang Yancheng,Shi Changsheng,Zeng Ming. Preparation of mesoporous calcium silicate with alumina-extracted coal gangue by hydrothermal method [J]. Inorganic Chemicals Industry, 2020, 52(11): 86-90.
[3]	Xie Juan,Xia Runnan,Du Hongxia,Xu Yongquan,Zhao Shuchun,Xu Hong,Kang Wentong. Preparation of α-Fe₂O₃/coal gangue composite photocatalyst and its application in pentachlorophenol degradation [J]. Inorganic Chemicals Industry, 2019, 51(5): 74-77.
[4]	Fan Jianming1，2. Study on sequential extraction experiment of aluminum and silicon from high alumina coal gangue [J]. Inorganic Chemicals Industry, 2019, 51(11): 65-68.
[5]	ZHANG Jin-Shan, SUN Chun-Bao, CAO Zhao, FAN Wen-Yang, GUO Zhen-Kun, FAN Xue-Min. Experimental research on preparation of metakaolin from coal kaolinite [J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(9): 64-.
[6]	FAN Wen-Yang, LI Xia, SUN Jian-Ling. Research on synthesis of 4A zeolite with a coal gangue in Inner Mongolia at low temperature [J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(5): 44-.
[7]	ZHANG Xiang, DUAN Jian-Bang, LI Rui-Ge, CHEN Miao, LU Yan-Jie. Preparation of polyaluminum chloride from calcium reducing slag and coal gangue [J]. INORGANICCHEMICALSINDUSTRY, 2016, 48(4): 66-.
[8]	. Experimental study on preparation of PAFS from acid leaching solution of high iron content coal gangue [J]. INORGANICCHEMICALSINDUSTRY, 2015, 47(6): 57-.
[9]	ZHAO Rui-Tong, WANG Jing, DUAN Xiao-Fang, FANG Li. Preparation technology of white carbon black from acid-leached residue of coal gangue [J]. INORGANICCHEMICALSINDUSTRY, 2015, 47(5): 53-.
[10]	XUE Fang-Bin, YANG Xi, GUO Yan-Xia, YANG Feng-Ling, CHENG Fang-Qin. Preparation of AlCl3·6H2O from acid leached solution of coal gangue by HCl gas sparging [J]. INORGANICCHEMICALSINDUSTRY, 2015, 47(4): 47-.
[11]	CHEN Xue-Mei, DENG Xiang-Yi, JIANG Wei-Dong. Research progress of iron removal technology in chromium tanning agent production from chromium and chromate residue [J]. INORGANICCHEMICALSINDUSTRY, 2014, 46(9): 13-.
[12]	KONG De-Shun, WU Hong. Experimental study on preparation of sodium silicate by purification of gangue and alkali melting activation [J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(8): 42-.
[13]	KONG De-Shun, FAN Jia-Xin, SHI Kai-Yi, LI Zhi. Experimental study on preparation of iron oxide red from acid leaching solution of high-iron coal gangue [J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(7): 56-.
[14]	REN Gen-Kuan. Preparation of 4A molecular sieve from coal gangue and its application in wastewater treatment [J]. INORGANICCHEMICALSINDUSTRY, 2013, 45(10): 42-.
[15]	HU Hong, XU De-Long, DUAN Yong-Hua, JIE Tian. Study on technologic conditions for production of P-Mg compound fertilizer with high Mg phosphate gangue in mixed phosphoric acid and sulfuric acid [J]. INORGANICCHEMICALSINDUSTRY, 2012, 44(2): 53-.

National Inorganic Salts Information Center

Inorganic Acid-Base-Salt Committee of CIESC

Synthesis of 4A molecular sieves from gangue with high iron and silica contents by iron removal and alkali melting activation

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 10