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Alunite
Sabtu, 2026-05-16 04:58:12Alunite is a hydroxylated aluminium potassium sulfate mineral, formula KAl3(SO4)2(OH)6. It was first observed in the 15th century at Tolfa, near Rome,...
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Sabtu, 2026-05-23 18:52:15process using ammonium sulfate and alumina as a low cost alternative to alumstone in the production of alum cake used in the manufacture of paper. The process...
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