Method and apparatus for recovering copper, bronze and lead from mixture of copper oxide, tin oxide and lead oxide

Patent metadata

Field	Value
Publication number	US-2025075287-A1
Application number	US-202418950529-A
Country	US
Kind code	A1
Filing date	Nov 18, 2024
Priority date	Mar 5, 2019
Publication date	Mar 6, 2025
Grant date	—

Abstract

A method and an apparatus for recovering copper, bronze and lead by allowing methane gas to flow into a reactor and heat-treating a mixture of copper oxide, tin oxide and lead oxide under a temperature condition of 700-900° C. is disclosed. The method includes placing a mixture of copper oxide, tin oxide and lead oxide in a reactor, increasing the temperature inside the reactor, and allowing a reductive gas to flow into the reactor so as to heat-treat the mixture.

First claim

What is claimed:

1 . An apparatus for recovering copper, bronze and lead from a mixture of copper oxide, tin oxide and lead oxide, the apparatus comprising:
a reactor into which reductive gas is introduced; a mesh structure disposed inside the reactor, wherein a mixture of copper oxide, tin oxide and lead oxide is placed on a top face of the mesh structure; a recovering unit disposed below the mesh structure; a heater for heating an inside of the reactor; and a recovering line connected to an upper end of the reactor for recovering vaporized lead inside the reactor.

2 . The apparatus of claim 1 , wherein the reductive gas includes methane gas.

3 . The apparatus of claim 1 , wherein the heater heats the inside of the reactor to a temperature range of 700° C. to 900° C.

4 . The apparatus of claim 1 , wherein nitrogen or argon gas is introduced into the reactor.

5 . The apparatus of claim 1 , further comprising:
a pressing device for applying an impact force or an inertial force to the mixture or the reactor; and a rotating device for rotating the reactor.

6 . The apparatus of claim 5 , wherein the pressing device applies the impact force or the inertial force to the mixture or the reactor 10 times for 1 to 3 minutes, and
the rotating device rotates the reactor 10 times for 1 minute to 3 minutes.

7 . The apparatus of claim 1 , wherein the recovering line includes:
at least one condenser for depositing the vaporized lead; a dust-collector connected in series to the condenser for dust-collecting a portion of lead not deposited using the condenser; and a scrubber connected in series to the dust-collector for recovering a portion of lead not dust-collected using the dust-collector.

8 . The apparatus of claim 7 , wherein a cooling plate is disposed inside the condenser.

Assignees

• Nat Univ Pukyong Ind Univ Coop Found

Inventors

• Wang Jei Pil

Classifications

• C22B25/02

  by dry processes · CPC title

• C22B13/02

  by dry processes · CPC title

• C22B7/001

  Dry processes · CPC title

• C22B13/025

  Recovery from waste materials · CPC title

• C22B15/0093

  by gases, e.g. hydrogen or hydrogen sulfide · CPC title