Effect of Cooling Rate and Slag Modification on the Copper Matte in Smelting Slag

Xiang Gao, Zhuo Chen, Junjie Shi, Pekka Taskinen, Ari Jokilaakso*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

1 Sitaatiot (Scopus)
14 Lataukset (Pure)

Abstrakti

The amount of copper flash smelting slag has increased during the recent years along with an increasing slag-to-metal ratio. During slag tapping, some copper sulfide is mechanically entrained. As a result, it is necessary to recover copper matte from the slag by suitable methods. At present, the most common way is slow, controlled cooling in a transfer ladle. However, research on the detailed effects of slow cooling and the function of slag modification is rare. This paper described experiments that were performed at different cooling rates (0.5, 1.5, 3, and 7 °C/min), with and without additive. A detailed characterization of the copper-rich phase and its particle size was subsequently made using SEM-EDS micrographs and image analysis software. With a decrease in cooling rate, the particle size of the copper-rich matte phase became larger. The addition of gypsum and carbon as a slag modifier affected the size of the copper-rich phase slightly, and its chemical composition was modified compared with the experiments without additive.

AlkuperäiskieliEnglanti
Sivut1593-1601
Sivumäärä9
JulkaisuMining, Metallurgy and Exploration
Vuosikerta37
Numero5
Varhainen verkossa julkaisun päivämäärä31 heinäkuuta 2020
DOI - pysyväislinkit
TilaJulkaistu - 1 lokakuuta 2020
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki

Sukella tutkimusaiheisiin 'Effect of Cooling Rate and Slag Modification on the Copper Matte in Smelting Slag'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä