Hot Filtration: A Way to Enhance the Recovery of Chromite in Sulfuric Acid Leaching, with or without the Addition of Perchloric Acid

Emre USTAOĞLU

Makale detayları

Hot Filtration: A Way to Enhance the Recovery of Chromite in Sulfuric Acid Leaching, with or without the Addition of Perchloric Acid

Yazarlar:

Emre USTAOĞLU

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2006 Vol.30 Issue 6, pp.375-380

Belge Tipi:

Makale

Yayın Tarihi:

5/2006

Belge Dili:

Türkçe

Document ID (Org No.):

2000744972

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160

Özet:

 

A high grade chromite concentrate obtained from the  Pınarbaşı region of Kayseri province in Turkey was reacted with a  solution of sulfuric acid and perchloric acid at atmospheric pressure.   The effects of temperature, duration, sulfuric acid concentration and  perchloric acid addition on leach recovery were determined in several  experiments.  Hexavalent chromium contents of the final solutions were  also analyzed after the experiments and it was found that at the end  of leach reaction chromium appeared in the solution as Cr3+ and it  did not change into environmentally hazardous Cr6+.  The final  product in the solution was chromium(III) sulfate obtained with about  98.7% maximum recovery, under the optimum leaching conditions of  175 °C, 2 h, 84.6 wt % H2SO4 and 1/2 perchloric acid/chromite  ratio.

 

A high grade chromite concentrate obtained from the  Pınarbaşı region of Kayseri province in Turkey was reacted with a  solution of sulfuric acid and perchloric acid at atmospheric pressure.   The effects of temperature, duration, sulfuric acid concentration and  perchloric acid addition on leach recovery were determined in several  experiments.  Hexavalent chromium contents of the final solutions were  also analyzed after the experiments and it was found that at the end  of leach reaction chromium appeared in the solution as Cr3+ and it  did not change into environmentally hazardous Cr6+.  The final  product in the solution was chromium(III) sulfate obtained with about  98.7% maximum recovery, under the optimum leaching conditions of  175 °C, 2 h, 84.6 wt % H2SO4 and 1/2 perchloric acid/chromite  ratio.

Makale detayları

Hot Filtration: A Way to Enhance the Recovery of Chromite in Sulfuric Acid Leaching, with or without the Addition of Perchloric Acid

Yazarlar: Emre USTAOĞLU

Yayıncı: TUBITAK

Dergi: Turkish Journal of Engineering and Environmental Sciences 2006 Vol.30 Issue 6, pp.375-380

Belge Tipi: Makale

Yayın Tarihi: 5/2006

Belge Dili: Türkçe

Document ID (Org No.): 2000744972

Sıklık: Üç Yıllık

eISSN: 1303-6157

pISSN: 1300-0160

Sayı

Yazarlar:

Emre USTAOĞLU

Yayıncı:

TUBITAK

Dergi:

Turkish Journal of Engineering and Environmental Sciences 2006 Vol.30 Issue 6, pp.375-380

Belge Tipi:

Makale

Yayın Tarihi:

5/2006

Belge Dili:

Türkçe

Document ID (Org No.):

2000744972

Sıklık:

Üç Yıllık

eISSN:

1303-6157

pISSN:

1300-0160