AWWA B202:2002 pdf download.Quicklime and Hydrated Lime
4.1.1.1 If quicklime is to be fed by a dry-feed machine, the quicklime shall, if necessary, be crushed and screened so that none will be retained on a 3 / 4 -in. (19-mm) sieve and not more than 5 percent shall pass through a No. 100 US standard sieve on shipment at the supplier’s plant. (Soft limes may generate some fines during vigorous screening. To minimize this possibility, use an intermediate 3 / 8 -in. [10-mm] sieve, which will reduce the load on the 100-mesh sieve and thus partly eliminate the pulverizing action of lime against lime.) 4.1.1.2 If provided in a dry form, the hydrated lime shall be white, finely powdered, and free from lumps or any foreign material that might interfere with the operation of dry-feed equipment. Uniformity of particle size is desirable.
4.1.2 Pneumatic equipment. If quicklime is to be handled by pneumatic conveying equipment, the quicklime shall, if necessary, be crushed and screened so that none shall be retained on a 1-in. (25-mm) sieve and not more than 5 percent shall pass through a No. 100 US standard sieve on shipment at the suppliers or manufacturer’s plant.
4.1.3 Mechanical equipment. If quicklime is to be handled by mechanical conveying equipment, the pieces of quicklime shall be no larger than 2 in. (51 mm), except that an occasional slab-like piece may be up to 3 in. (76 mm) in length.
4.2.1 Quicklime. Quicklime shall not have less than 80 percent available calcium oxide (see Sec. II.E and Sec. 5.6). Quicklime shall produce more than a 10°C (18°F) rise in temperature in 3 min and shall reach the maximum temperature, as a minimum, in 20 min on slaking according to Sec. 5.4. Quicklime supplied according to the provisions of this standard shall be freshly burned and shall be substantially free from carbonate solids and siliceous residue. Not more than 5.0 percent of the quicklime shall be insoluble material when tested according to Sec. 5.5, unless modified by mutual agreement between the purchaser and supplier.AWWA B202 pdf download.