Abstract： AS 2879.9:2002 pdf download.Alumina Part 9: Determination of flow time. 6 SAMPLE PREPARATION The analytical sample shall be equilibrated to the laboratory atmosphere for a minimum of 2 h in a layer of 5 mm maximum thickness. The sample shal...

AS 2879.9:2002 pdf download.Alumina Part 9: Determination of flow time.

6 SAMPLE PREPARATION

The analytical sample shall be equilibrated to the laboratory atmosphere for a minimum of 2 h in a layer of 5 mm maximum thickness. The sample shall then he split as per AS 4538.2 into three portions of approximately 105—120 g for testing. The sample shall then be screened through a sieve (5.5) and the oversize material discarded.

7 PROCEDURE

7.1 Gener1

This procedure is for manually timed determinations.

7.2 Number of determinations

Three determinations shall be carried out.

7.3 Determination

Each determination shall be carried out as follows:

(a) Set up the apparatus in a vibration-free environment.

(b) Ensure that the funnel is secure on a stand and that the upper surface is precisely level.

(c) For apparatus not in frequent use. pre-condition the funnel by passing several portions of alumina through it. Discard this

material prior to testing.

(d) Accurately weigh 100 ±0.1 g of the prepared sample into a suitable container. (See Clause 6.)

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