229910052709 silver Inorganic materials 0.000 title claims abstract description 49.Priority to US08/188,727 priority Critical patent/US5439503A/en Application granted granted Critical Publication of US5439503A publication Critical patent/US5439503A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links
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#Volcanic cinders pdf
Google Patents Process for treatment of volcanic igneous rocks to recover gold, silver and platinumĭownload PDF Info Publication number US5439503A US5439503A US08/188,727 US18872794A US5439503A US 5439503 A US5439503 A US 5439503A US 18872794 A US18872794 A US 18872794A US 5439503 A US5439503 A US 5439503A Authority US United States Prior art keywords silver copper iron gold platinum group Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5439503A - Process for treatment of volcanic igneous rocks to recover gold, silver and platinum Origin of these changes that affect rose growth are discussed.US5439503A - Process for treatment of volcanic igneous rocks to recover gold, silver and platinum Main solution changes were: reduction of phosphate and K content, release of Mn when pH ≤ 6, and increase of Mg and Na. Physicochemical properties of cinders were determined, and drainage periodically analyzed during the first culture year.Ĭinders showed a relatively low exchange capacity (variable with pH), and a high content of chemically unstable volcanic glass.
#Volcanic cinders trial
Results of soilless culture of roses on tuff media obtained by Israeli growers are encouraging studies concerning the use of basaltic cinders, abundant in the Canary Islands.Ī factorial trial growing roses in three-particle-size cinder media and three drip irrigation frequencies, with a non-return nutrient solution, was carried out. ISHS Acta Horticulturae 424: II International Rose Symposium CHANGES IN NUTRIENT SOLUTION CAUSED BY VOLCANIC CINDER MEDIA OF SOILLESS GREENHOUSE ROSES. CHANGES IN NUTRIENT SOLUTION CAUSED BY VOLCANIC CINDER MEDIA OF SOILLESS GREENHOUSE ROSES.
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