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HYDROTERMIC PROCEDURE FOR THE TREATMENT OF BLYLLAS WITH RECOVERY OF LEAD METAL, SOLUBLE AND SOLUBLE SILICATES AND SILICA
HYDROTERMIC PROCEDURE FOR THE TREATMENT OF BLYLLAS WITH RECOVERY OF LEAD METAL, SOLUBLE AND SOLUBLE SILICATES AND SILICA
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机译:回收铅,金属和可溶性硅酸盐及硅石处理水玻璃的加氢程序
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摘要
There is described a process completely performed in aqueous phase, which provides a heat etching of lead glass with aqueous solutions of strong alkali followed by an electrolytic treatment of the suspension so obtained, in order to recover metallic lead and obtain soluble silicates, separated from insoluble silicates, both lead-free. The process also provides for the production of pure silica, derived from the soluble silicates, and a possible use thereof to increase the ratio between silica and sodium oxide, which characterizes the specifications of the soluble silicates. The electrolysis for the recovery of metallic lead is implemented in a cell in which the polarity of the electrodes is periodically reversed, to obtain the detachment of the metallic lead deposited on the cathodes.
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