Effects of the fixed carbon and ash in blast furnace dust on its co-reduction with seaside titanomagnetite

• Autorzy: Wang Xiaoping , Hu Tianyang , Chen Chuanzhong , Sun Tichang

Identyfikatory

DOI

10.5277/ppmp19060

• Języki publikacji: EN

Abstrakty

EN

Previous research has found that the fixed carbon in blast furnace dust (BFD) could be used as the reductant of co-reduction roasting of the iron oxides in seaside titanomagnetite and BFD to replace coals. This research studied the influence mechanism of the fixed carbon and ash in BFD on coreduction.Results showed that both fixed carbon and ash in BFD promoted the reduction of iron, while ash had adverse effect on separation of titanium and iron. The main mechanism was as follows: The ash in BFD accelerated melting. In addition, the iron oxide in the ash of BFD could be reduced to metallic iron cores more easily in the initial stage, providing the site of inhomogeneous core and promoting the aggregation and growth of metallic iron. Furthermore, the fixed carbon mainly reacted with iron ore by solid-solid reaction, leading to a rapid reduction rate and a high utilization rate of fixed carbon.

Słowa kluczowe

EN

seaside titanomagnetite; blast furnace dust; co-reduction roasting; fixed carbon; ash

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2019
• Tom: Vol. 55, iss. 5
• Strony: 1323--1337
• Opis fizyczny: Bibliogr. 23 poz., rys., wykr., wz.

Twórcy

autor

Wang Xiaoping

• School of Mining and Coal, Inner Mongolia University of Science and Technology, Baotou 014010, China

autor

Hu Tianyang

• State Environmental Protection Key Laboratory of Quality Control in Environmental Monitoring, China National Environmental Monitoring Centre, Beijing 100012, China

autor

Chen Chuanzhong

• State Environmental Protection Key Laboratory of Quality Control in Environmental Monitoring, China National Environmental Monitoring Centre, Beijing 100012, China

autor

Sun Tichang

• School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing 100083, China

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).