Method and apparatus for removing deposit in non-ferrous smelting furnace

An apparatus for removing furnace deposit in a non-ferrous smelting furnace comprising:

• a hollow lance capable of being inserted into a furnace through an opening provided in a ceiling of a non-ferrous smelting furnace;
• a pneumatic transportation apparatus for supplying a reducing agent toward the top of said lance;
• a spray nozzle connected to a tip of said lance;
• a vertically movable carriage;
• lifting driving means for vertically driving said carriage;
• and rotation-driving means for rotation-driving said lance around a lance axis;
• wherein, after inserting said lance into said furnace, said lance is rotated within a prescribed angular range by driving said lance with said lifting driving means and said rotation-driving means and moved vertically within a prescribed range;
• simultaneously, the reducing agent is supplied from said pneumatic transportation apparatus to said lance;
• and the reducing agent is ejected from said spray nozzle at the tip of said lance at a flow velocity of over a certain level so as to cause the reducing agent to reach a prescribed target position.