Applications
- 8.000.6034Determination of the sodium contribution of solvent-extractable organic compounds in Bayer process liquor
This poster presents a highly reproducible procedure for the determination of the sodium contribution of acid-extractable organic species in Bayer process liquor. The precision of the method is estimated to be 0.2% RSD.
- AB-313Analysis of Bayer process liquors using thermometric titration
The determination of the total causticizer, sodium carbonate and aluminum oxide contents in (Bayer) process liquors can be accomplished with high precision and speed by using the 859 Titrotherm in a thermometric acid-base titration. A complete titration takes approximately 5 minutes.The procedure is an automated adaptation of the traditional Watts-Utley method, and is similar to the VanDalen-Ward thermometric titration method, but with the added advantage that the analysis can also be performed for the carbonate content of the liquor.
- AN-C-160Calcium in Bayer caustic soda
In order to extract aluminum from bauxite, the aluminum ore is exposed with a caustic soda solution under pressure in the temperature range of 150 to 200 °C. Dilution and pH value setting are implemented by the addition of 170 mmol/L citric acid prior to calcium determination with ion chromatography in the Bayer caustic soda. Doing so establishes a pH value of 4.5 and prevents precipitation of aluminum hydroxide. The IC separation takes place on the Metrosep C 4 - 150/4.0 column with a citric acid eluent.
- AN-H-026Determination of causticizer, carbonate and aluminum oxide in Bayer process liquor
This Application Note describes a method for the determination of causticizer, carbonate and aluminum oxide in used Bayer process liquors. The method is based on processes that were developed by Watts-Utley and VanDalen-Ward.
- AN-H-027Determination of organic soda in Bayer aluminate liquors
Determination of total basicity of extractable organic compounds of acidic character in Bayer process refinery liquors.
- AN-H-067Determination of chloride in Bayer process liquor
Determination of chloride in Bayer process liquor.
- AN-H-080Determination of total sodium in sodium aluminate liquors by aluminum titration
Determination of the total sodium content of sodium aluminate liquors, such as Bayer Process liquor. This method is suitable for the analysis of all sodium aluminate solutions down to at least 1 g/L as Na2CO3. The determination may be automated by adding an 814 USB sample processor to an 859 Titrotherm.
- AN-H-081Determination of phosphoric and nitric acid in nitrophos liquors
Determination of phosphoric and nitric acids in liquors from the Nitrophos fertilizer manufacturing process.
- AN-H-084Determination of mixtures of sulfuric, phosphoric, and nitric acids
Determination of mixtures of sulfuric, phosphoric, and nitric acids. The procedure is suitable for automated analysis using an 814 Sample Processor.
- AN-H-104Determination of free acid content of hydrometallurgical leach liquors
A measured amount of acidic hydrometallurgical leach liquor is treated with potassium oxalate solution to mask potential interference from Fe(III) and other metal ions, and then titrated with standard 1 mol/L NaOH solution.