Hydrated Alumina A KB30 Hydrate ALCOA WORLD A LUMINA – A USTRALIA A/004-R05/0201 page 1 of 1 An easy to dissolve hydrated alumina for alumina chemicals production Product Information Product Description KB 30 is a fine sized near white hydrated alumina designed for applications where an easy dissolvi ng and clear solution is desired. The fine sizing helps make the hydrate easy to dissolve and speeds up reaction times. KB30 Hydrate is a hydrated alumina precipitated in a dedicated process circuit. Process chemistry is controlled to give a fine product with low impurities and organics. Applications KB30 is used for the production of aluminium chemicals, most commonly: • alum • sodium aluminate •?poly aluminium chloride • zeolites Typical Properties of KB30 Hydrated Alumina Chemical Analyses, wt % Al2 O3 Al(OH) 3 Na2 O SiO2 Fe2 O3 CaO Soluble Na2 O Particle Size (cumulative) (1) Shipping Limits Typical Range 64.7 min 65.1 - 65.2 99.0 min 99.5 - 99.7 0.40 max 0.22 - 0.32 0.010 max <0.004 0.012 max 0.005 - 0.008 0.050 max 0.020 - 0.031 0.03 max <0.010 (2) % on 100 mesh (150µm) % on 325 mesh (45µm) 1 max 65 min <0.2 >75 Brightness (Z%) 85 min 88 - 93 1) Approximately 2 standard deviations around the mean. 2) Electroform Screens Information presented herein is believed to be accurate and reliable but is not intended to meet any specification and does not imply any guarantee or warranty by Alcoa. Alcoa World Alumina – Australia Cnr Davy and Marmion Streets, Booragoon, Western Australia 6154, Australia Postal Address: P.O. Box 252, Applecross W.A. 6153, Australia Phone:+61 8 9316 5111, Fax: +61 8 9316 5228