YS/T 534.2-2007Chemical analysis methods of aluminium hydroxide. Part 2: Determination of the loss of mass at 1100 Celsius. Gravimetric method (English PDF)

Foreword

YS/T 534-2007 "chemical analysis of aluminum hydroxide" is YS/T 534-2006 (formerly GB/T 6610-2003) amendments it is divided into five parts.

--- Part 1. Determination of moisture content - Gravimetric method

--- Part 2. loss on ignition - Gravimetric method

--- Part 3. Determination of silica content molybdenum blue photometric

--- Part 4. Determination of iron oxide content phenanthroline spectrophotometry Determination of sodium oxide content. Part 5 ---this is Part 2.

The partial replacement of YS/T 534.2-2006 (formerly GB/T 6610.2-2003).

This part is YS/T 534.2-2006 "Chemical analysis methods of aluminum hydroxide - Part 2. loss on ignition - Gravimetric method" compilation Series finishing.

The non-ferrous metal part by the National Standardization Technical Committee and centralized.

This part of the Aluminum Corporation of China Zhengzhou Research Institute is responsible for drafting.

This section drafted by the Aluminum Corporation of China Shandong Branch.

1 Scope

This section provides the determination of aluminum hydroxide in the loss on ignition.

This section applies to the determination of loss on aluminum hydroxide boil. Measurement range. 25.00% - 35.00%.

2 Principle of the method

The sample after the 110 °C ± 5 °C drying, ± 20 °C calcined at 1100 °C, in order to calculate the loss of mass loss on ignition of the mass fraction.

3 Instrument

3.1 Analytical balance. accuracy 0.0001g.

3.2 vacuum dryer. diameter 21cm, with the new desiccant activated alumina. While cooling the same vacuum desiccator appropriate number of weighing bottle. E.g., an inner diameter of 21cm vacuum dryer, while cooling the weighing bottle not more than six.

3.3 Oven. temperature can be controlled at 110 °C ± 5 °C, can not be simultaneously dried in an oven other materials.

3.4 high-temperature furnace. temperature can be controlled at 1100 °C ± 20 °C.

4 Sample

4.1 specimen weighing bottle is placed in advance at 110 °C ± 5 °C drying 2h, stored in a vacuum desiccator (3.2), cooled to room temperature before use.

4.2 activated alumina activated. will be filled with activated alumina beaker was placed in an oven with a blower, drying at 300 °C ~ 350 °C 3h ~ 4h removed immediately placed in a vacuum dryer to cool to room temperature before use. Activated alumina is generally used to burn 6 Determination of loss.

5 Step, Analysis