ISO 2961:1974 PDF
Aluminium oxide primarily used for the production of aluminium — Determination of an adsorption index
Aluminium oxide primarily used for the production of aluminium — Determination of an adsorption index
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 4
- Дата публикации:
- 1 февраля 1974 г.
- Издание:
- ISO IS 2961 edition 1 version 1
- ICS:
- 71.100.10
Specifies two methods for industrial calcined products. The first, using carbon tetrachloride vapour, is applicable if the density of the material exceeds 3.75 g/ml; the second, using water vapour, is applicable if the density of the material is lower than 3.75 g/ml. The adsorptive power is evaluated by exposure of a previously dried sample to an atmosphere saturated with carbon tetrachloride or water vapour at a conventional temperature. Measurement of the quantity of the corresponding vapour adsorbed after a conventional time. Has also been approved by the IUPAC.
Abstract
Overview
ISO 2961:1974 - "Aluminium oxide primarily used for the production of aluminium - Determination of an adsorption index" specifies standardized laboratory procedures to measure the adsorptive power of industrial, calcined aluminium oxide (alumina). The standard defines two complementary test methods: a carbon tetrachloride vapour method for materials with density > 3.75 g/ml, and a water‑vapour method for materials with density < 3.75 g/ml. Results are reported as an adsorption index per 100 g of alumina dried at 300 °C. This International Standard has also been approved by IUPAC.
Key Topics and Requirements
- Scope: Applicable to industrial calcined aluminium oxide used in aluminium production; evaluates vapour adsorption on powdered solids.
- Two methods:
- Carbon tetrachloride vapour method (for density > 3.75 g/ml)
- Exposure to CCl4 vapour at 25 ± 0.5 °C for 2 h.
- Drying at 300 ± 10 °C; calculation uses mass differences and the density of CCl4 (1.594 g/mL at 25 °C) to express adsorption as millilitres per 100 g dried alumina.
- Apparatus: squat weighing bottle, desiccator/vessel with perforated support plate, electric oven.
- Water vapour method (for density
- Carbon tetrachloride vapour method (for density > 3.75 g/ml)
Технические детали
- Технический комитет
- ISO/TC 226 - Materials for the production of primary aluminium
- SKU
- ISO 2961:1974
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