Hydro Fuels, Inc.

Other

James J Russ

John W Smith

Janet S Condra

A method for recovering precious metals such as gold and silver from precious metal-bearing materials that include other solids comprises treating the precious metal-bearing materials with an aqueous, basic solution having a pH in the range of about 12 to about 14 for a time sufficient to suspend the precious metals in substantially free form in the solution, followed by recovery of precious metals from solids and from the solution by known methods.

Method for recovering precious metals from precious metal-bearing

A method for separating and recovering substantially pure aluminum, iron and silica from fly ash, a by-product of coal combustion, includes reacting the fly ash with aqueous fluosilicic acid and aqueous hydrogen fluoride at temperatures sufficiently high to form aqueous silicon fluoride vapor and fluorides and fluosilicate of aluminum and iron, separating the aluminum and iron fluorides and fluorosilicates from the aqueous silicon fluoride vapor, hydrolizing the silicon fluoride vapor to form silicon dioxide in substantially pure form and hydrogen fluoride, recovering and recycling the hydrogen fluoride for reuse in the process, and separating the aluminum and iron fluorides and fluosilicates from one another, and recovering substantially pure aluminum fluoride, substantially pure iron and other substantially pure metals, by electroplating or otherwise.

Method for separating and recovering silica, aluminum and iron from fly

A method for treating water or waste water to remove pollutants therefrom includes treating fly ash comprising aluminum, iron and silica with an aqueous base, recovering a base-treated, solid fly ash, washing the base-treated solid fly ash with water, recovering a rinsed, base-treated fly ash solid, reacting the rinsed, base-treated fly ash solid with mineral acid, and recovering an aqueous, solubilized acidic fly ash leachate, then mixing the aqueous, acidic solubilized fly ash leachate with water or waste water to remove pollutants therefrom, or with sludge to reduce its resistant to dewatering.

Growing community of inventors

Lawrenceburg, TN, United States of America

James J Russ