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首页> 外国专利> RECOVERY OF BASIC AND PRECIOUS METALS FROM LIQUID CRYSTAL DISPLAYS (LCD SCREENS) AND PLANT FOR RECOVERY THEREOF

RECOVERY OF BASIC AND PRECIOUS METALS FROM LIQUID CRYSTAL DISPLAYS (LCD SCREENS) AND PLANT FOR RECOVERY THEREOF

机译：从液晶显示器（LCD屏幕）中回收基本和贵金属以及用于回收的工厂

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Invention herewith described refers to the recovery of basic and precious metals from liquid crystal displays (lcd screens) and plant for recovery thereof. When the liquid crystal display (LCD) is concerned, the main process of indium extraction is the sulphuric acid leaching. Before this process, the grinding and sieving processes will be performed to increase the concentration of indium in the solid bits processed by leaching. Moreover, these processes will allow the separation of plastic and glass that can also be recovered and used. This pre-treatment allows the increase in the concentration of the leaching solution and thus enables easier recovery of indium zinc cementation.Oxidizing agent during leaching is necessary to reduce the formation of foam due to the liquid crystals (organic compounds). The recovery of indium can be done by the movable plant:- 1 reactor, in which the main process (leaching or cementation) is executed;- 1 plate and frames with filters for separation of solid components from liquid;- 1 reactor that receives filtrate operating as the reservoir of the apparatus for artificial respiration (so-called artificial lung).
机译：本文描述的发明涉及从液晶显示器（lcd屏幕）和用于其回收的设备中回收碱性和贵金属。当涉及液晶显示器（LCD）时，铟萃取的主要过程是硫酸浸出。在此过程之前，将执行研磨和筛分过程以提高通过浸提处理的固体钻头中铟的浓度。此外，这些过程将使塑料和玻璃分离，也可以将其回收和使用。这种预处理可以增加浸出溶液的浓度，从而使铟锌胶结的恢复更加容易。浸出过程中的氧化剂必须用于减少由于液晶（有机化合物）而形成的泡沫。铟的回收可以通过可移动设备完成：-1个反应器，在其中执行主要过程（浸出或胶结）;-1个带过滤器的板框，用于从液体中分离固体成分;-1个接收滤液的反应器用作人工呼吸设备（所谓的人工肺）的容器。

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