Rapid method for the complete analysis of ferro-chrome slag

Biswas, A C and Bhattacharya, H P (1969) Rapid method for the complete analysis of ferro-chrome slag. NML Technical Journal, 11 (2). pp. 4-6.

Restricted to NML users only. Others may use ->



A rapid method for complete analysis of ferro-chrome and silico-chrome slags using acid fluxes has been developed. In this procedure the finely powdered slag is decomposed by fuming with sulphuric acid and sodium sulphate at moderately high temperature. Silica is determined by hydrofluorisation from the residue and after fusion mixed oxides are precipitated from the filtrate. After determination of chromic oxide and ferric oxide in the mixed oxide alumina is determined by difference. From an aliquot of the filtrate left after precipitation of mixed oxides calcium oxide is determined by precipitating calcium oxalate and titrating with EDTA with murexide as indicator. Total calcium and magnesium oxides are determined from another aliquot with EDTA and solochrome black and magnesium is calculated by difference. It has been found that the method is suitable for routine complete analysis of ferro-chrome slags and two analysis can analyse four samples in one day. (Mr. A.C. Biswas, Scientist and Dr. H.P. Bhattacharyya, Scientist, National Metallurgical Laboratory, Jamshedpur)

Item Type:Article
Official URL/DOI:http://library/articleDetails.jsp?recordid=213
Uncontrolled Keywords:Ferro-chrome slags; Solochrome black; Silico-chrome slags
Divisions:Metal Extraction and Forming
ID Code:1988
Deposited By:Dr. A K Sahu
Deposited On:21 Oct 2010 11:00
Last Modified:01 Mar 2012 14:19
Related URLs:

Repository Staff Only: item control page