1 - AS 4156.3-1994 COAL PREPARATION - MAGNETITE FOR COAL PREPARATION PLANT USE-TEST METHODS
4 - PREFACE
5 - CONTENTS
7 - SECTION 1 SCOPE AND GENERAL
7 - 1.1 SCOPE
7 - 1.2 REFERENCED DOCUMENTS
7 - 1.3 DEFINITIONS
8 - SECTION 2 SAMPLING AND DETERMINATION OF AS-RECEIVED MOISTURE
8 - 2.1 SCOPE OF SECTION
8 - 2.2 PRINCIPLE
8 - 2.3 APPARATUS
8 - 2.4 SAMPLING
8 - 2.4.1 General
8 - 2.4.2 Magnetite in sealed bags
9 - 2.4.3 Bulk deliveries of magnetite
10 - 2.4.4 Number of samples
10 - 2.5 MOISTURE DETERMINATION
10 - 2.5.1 Free moisture
10 - 2.5.2 Air-dry moisture
10 - 2.5.3 Total moisture in the as-received consignment
11 - 2.5.4 Precision
11 - 2.6 SAMPLING FOR LABORATORY TESTS
11 - 2.6.1 General
11 - 2.6.2 Manual increment division
11 - 2.6.3 Preparation of samples
12 - 2.7 PACKING AND MARKING OF SAMPLES
13 - SECTION 3 DETERMINATION OF RELATIVE DENSITY
13 - 3.1 SCOPE OF SECTION
13 - 3.2 PRINCIPLE
13 - 3.3 REAGENTS
13 - 3.3.1 General
13 - 3.3.2 Ethanol
13 - 3.4 APPARATUS
13 - 3.5 SAMPLING
13 - 3.6 PROCEDURE
13 - 3.6.1 Density of water
13 - 3.6.2 Volume of density bottle
14 - 3.6.3 Density of alcohol
14 - 3.6.4 Relative density of sample
14 - 3.7 CALCULATIONS
14 - 3.7.1 Volume of density bottle
14 - 3.7.2 Density of alcohol
15 - 3.7.3 Relative density of sample
15 - 3.8 REPORTING OF RESULTS
15 - 3.9 PRECISION
16 - SECTION 4 DETERMINATION OF TOTAL IRON CONTENT
16 - 4.1 SCOPE OF SECTION
16 - 4.2 PRINCIPLE
16 - 4.3 REAGENTS
16 - 4.3.1 General
16 - 4.3.2 Hydrochloric acid
16 - 4.3.3 Hydrochloric acid,
16 - 4.3.4 Sulfuric acid,
16 - 4.3.5 Hydrofluoric acid,
16 - 4.3.6 Orthophosphoric acid,
16 - 4.3.7 Tin(II) chloride solution (100 g/L)
16 - 4.3.8 Mercury(II) chloride solution,
16 - 4.3.9 Sodium diphenylamine sulfonate solution,
16 - 4.3.10 Sulfuricacid, 4.3.11 Potassiumpermanganate(KMnO)solution, 4.3.12 Sodiumperoxide(NaO), 4.3.13 Standard potassium dichromate solution
16 - 4.3.11 Potassium permanganate (KMnO4 ) solution,
16 - 4.3.12 Sodium peroxide (Na2 O2 ),
16 - 4.3.13 Standard potassium dichromate solution
16 - 4.4 APPARATUS
16 - 4.5 SAMPLING
16 - 4.6 PROCEDURE
17 - 4.6.1 Acid-soluble samples
17 - 4.6.2 Acid-insoluble samples
18 - 4.7 CALCULATION
18 - 4.8 PRECISION
18 - 4.9 REPORTING OF RESULTS
19 - SECTION 5 DETERMINATION OF IRON(II) CONTENT
19 - 5.1 SCOPE OF SECTION
19 - 5.2 PRINCIPLE
19 - 5.3 REAGENTS
19 - 5.3.1 General
19 - 5.3.2 Hydrochloric acid,
19 - 5.3.3 Hydrochloric acid,
19 - 5.3.4 Orthophosphoric acid,
19 - 5.3.5 Orthophosphoric acid,
19 - 5.3.6 Sodium diphenylamine sulfonate solution,
19 - 5.3.7 Standard potassium dichromate solution
19 - 5.4 APPARATUS
19 - 5.5 SAMPLING
19 - 5.6 PROCEDURE
20 - 5.7 CALCULATION
21 - 5.8 PRECISION
21 - 5.9 REPORTING OF RESULTS
22 - SECTION 6 DETERMINATION OF PARTICLE SIZE DISTRIBUTION
22 - 6.1 SCOPE OF SECTION
22 - 6.2 APPARATUS
22 - 6.3 SAMPLE
22 - 6.4 PROCEDURE
22 - 6.5 SUB-SIEVE ANALYSIS
23 - SECTION 7 DETERMINATION OF TOTAL MAGNETICS CONTENT
23 - 7.1 SCOPE OF SECTION
23 - 7.2 PRINCIPLE
23 - 7.3 REAGENTS
23 - 7.3.1 Water
23 - 7.3.2 Detergent
23 - 7.4 APPARATUS
23 - 7.4.1 Davis tube tester
23 - 7.4.2 Constant-head tank
23 - 7.4.3 Stopwatch
23 - 7.4.4 Measuring cylinder
23 - 7.4.5 Balance
23 - 7.4.6 Drying oven
23 - 7.4.7 Beaker
23 - 7.4.8 Gauss meter
23 - 7.5 PROCEDURE
23 - 7.5.1 Calibration
23 - 7.5.2 Sample preparation
24 - 7.5.3 Sample introduction
24 - 7.5.4 Determination
25 - 7.6 CALCULATION
25 - 7.7 CALIBRATION OF DAVIS TUBE (See Figure 7.3)