1、 FORD LABORATORY TEST METHOD AZ 103-03 Date Action Revisions 2001 01 31 Revised Editorial - no technical change A. Cockman 1997 12 01 Printed copies are uncontrolled Page 1 of 4 Copyright 2001, Ford Global Technologies, Inc. STRENGTH TEST OF ACTIVATED CARBON Application This method outlines a means
2、of obtaining the strength (resistance to abrasion) of activated carbon. Apparatus Required Ro-Tap Sieve Shaking Machine Catalog No. 57420-039 Source: VWR Scientific Inc. 3140 Grand River Ave. Detroit, MI 48208 or equivalent. Timer Catalog No. 62366-001 Source: VWR Scientific Inc. 3140 Grand River Av
3、e. Detroit, MI 48208 or equivalent. Sieves U.S. Standard, sieve series, 200 mm diameter consisting of: #4 #12 #6 #14 #8 #20 #10 Pan Steel Balls (Ball Bearing Grade) Twenty 13 mm balls Ten 19 mm balls Analytical Balance Accurate to 0.5 g FORD LABORATORY TEST METHOD AZ 103-03 Page 2 of 4 Copyright 200
4、1, Ford Global Technologies, Inc. Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwis
5、e specified. Test Procedure 1. Make sieve analysis of activated carbon per ASTM D 2862. 2. Weigh each fraction, to the nearest 0.5 g, remaining on each sieve. 3. Combine the fractions and place in the special pan with the thirty steel balls (see Figure 1) Shake pan on Ro-Tap Shaker for 20 minutes. T
6、he number of rotations per minute shall be between 220 and 300 and the number of taps per minute shall be between 140 and 160. The special pan shall be on the bottom of an equivalent 7 (full height) high sieve nest with a bottom pan, half height with extended rim (blank sieve) directly above it. The
7、 remainder of the 7 high sieve nest can be made with any combination of assorted sieves. 4. After 20 minutes of shaking, remove balls and pour the sample on the top sieve of the sieve nest used in step one. Repeat steps 1 and 2 ( Ro-Tap time 10 minutes). 5. Calculate the average particle size and st
8、rength. Calculations: The average particle size of each fraction is assumed to be midway between the size of opening of the sieve which that portion passed and the size of the opening of the sieve that retained that part of the sample. For example, the opening of the #4 standard sieve is 4.76 mm and
9、 that of the #6 standard sieve is 3.36 mm. The diameter of the particles that pass the #4 sieve and are retained by the #6 sieve is assumed to be the mean, or 4.06 mm. Using the values in the third column of the typical computation that follows, compute the average particle size of the material both
10、 before and after making the strength test. The “strength“ is obtained by dividing the final average particle size by the original average particle size and multiplying by 100. The “strength“ number is reported to the nearest whole number. The mean opening used for the #4 sieve is computed on the ba
11、sis of a sieve having an opening of 6.35 mm and the #4 sieve having an opening of 4.76 mm. FORD LABORATORY TEST METHOD AZ 103-03 Page 3 of 4 Copyright 2001, Ford Global Technologies, Inc. TYPICAL COMPUTATION FOR PARTICLE SIZE AND STRENGTH Fraction Retained On Percentage of Fraction Mean Opening (Avg
12、 Particle Size) (Original Sample) Weighted Average #4 sieve 0.0 5.56 mm 0.0 #6 sieve 23.0 4.06 mm 93.4 #8 sieve 36.5 2.87 mm 104.8 #10 sieve 24.0 2.19 mm 52.6 #12 sieve 8.0 1.84 mm 14.7 #14 sieve 7.0 1.54 mm 10.8 #20 sieve 1.0 1.12 mm 1.1 Total = 277.4 277.4 = 2.77 mm = Average Particle Size of Orig
13、inal Sample 100 TYPICAL COMPUTATION FOR PARTICLE SIZE AND STRENGTH Fraction Retained On Percentage of Fraction (After “Strength Test“) Mean Opening (Avg Particle Size) Weighted Average #4 sieve 0.0 5.56 mm 0.0 #6 sieve 20.5 4.06 mm 83.2 #8 sieve 37.5 2.87 mm 107.6 #10 sieve 22.0 2.19 mm 48.2 #12 sie
14、ve 9.0 1.84 mm 16.6 #14 sieve 7.5 1.54 mm 11.6 #20 sieve 1.5 1.12 mm 1.7 Total = 268.9 268.9 = 2.69 mm = Average Particle Size after “Strength“ Test 100 Strength = 2.69 mm = .971 x 100 = 97.1 = 97 2.77 mm Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities. FORD LABORATORY TEST METHOD AZ 103-03 Page 4 of 4 Copyright 2001, Ford Global Technologies, Inc. FIGURE 1 - Extruded Material
