US2006213330A1PendingUtilityA1

Method for recycling metallic sludge

27
Individually held — no corporate assignee on recordPriority: Mar 22, 2005Filed: Mar 22, 2005Published: Sep 28, 2006
Est. expiryMar 22, 2025(expired)· nominal 20-yr term from priority
Inventors:Chen-Chou Hsieh
C22B 5/10C22B 7/005C22B 15/0054Y02P10/20C22B 7/001C22B 15/0058
27
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Claims

Abstract

A method for recycling metallic sludge material includes collecting and precipitating a metallic sludge, and dehydrating the metallic sludge into a dehydrated metallic sludge. The dehydrated metallic sludge is then heated to a temperature ranging from 550 to 850° C., in order to remove hydrogen materials form the dehydrated metallic sludge, and to convert the dehydrated metallic sludge into oxidized metallic particles. The dehydrated metallic sludge may further be crushed into small metallic particles, before heating the dehydrated metallic sludge. The oxidized metallic particles may further be heated to a temperature ranging from 1100 to 1600° C., in order to convert the oxidized metallic particles into a metal ingot.

Claims

exact text as granted — not AI-modified
1 . A method for recycling metallic sludge material comprising: 
 collecting and precipitating a metallic sludge,    dehydrating the metallic sludge into a dehydrated metallic sludge,    heating the dehydrated metallic sludge to a temperature ranging from 550 to 850° C., in order to remove hydrogen materials form the dehydrated metallic sludge, and to convert the dehydrated metallic sludge into oxidized metallic particles.    
   
   
       2 . The method as claimed in  claim 1  further comprising packaging the oxidized metallic particles to form as a product.  
   
   
       3 . The method as claimed in  claim 1  further comprising crushing the dehydrated metallic sludge into small metallic particles, before heating the dehydrated metallic sludge.  
   
   
       4 . The method as claimed in  claim 1  further comprising heating the oxidized metallic particles to a temperature ranging from 1100 to 1600° C., in order to convert the oxidized metallic particles into a metal ingot.  
   
   
       5 . The method as claimed in  claim 1  further comprising packaging the metal ingot to form as a product.

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