GB/T 4701.6-2008Ferrotitanium - Determination of aluminum content - EDTA titrimetric method (English PDF)

1 Scope

This section specifies the determination of aluminum content of ilmenite EDTA titration.

This section applies to the determination of aluminum content ilmenite, measurement range (mass fraction). 3.00% - 12.00%.

2 Normative references

The following documents contain provisions which, through reference in this text, constitute provisions of this part. For dated references, subsequent

Amendments (not including errata content) or revisions do not apply to this section, however, encourage the parties to this part of the research agreement

Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this section.

GB/T 4010 alloy chemical analysis and preparation of samples

Principle 3

Sample with nitric acid, hydrofluoric acid, sulfuric acid decomposition by hexamethylenetetramine, alkali after separation, the filtrate to adjust the pH, addition of excess EDTA Standard Solution to PAN as indicator drop back titration of excess EDTA standard solution titration using copper standard solution, then add fluoride

Sodium replacement of aluminum, copper standard titration solution and then titrated according to standard titration solution of copper consumption, calculate the content of aluminum.

4 Reagents and materials

Unless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled water or its equivalent purity water.