| 摘要 |
In an arrangement for injection of gas-powder mixtures into a metal melt in a crucible 1, preferably a foundry crucible, from a gas-powder mixer 11 through an injection lance 4 lowerable into the crucible, a lid 2 or hood is arranged to be placeable over the crucible. A vertical rack 5 is mounted on the lid with a vertical guide, whereby a lance fastening for the injection lance is arranged in or at the guide. Drive means 8, 9 are arranged for lowering or lifting the lance down into or up from the melt, respectively, through an opening arranged in the lid. A gas-powder mixer 11 is arranged juxtaposed the crucible with a pipe 18 for the gas-powder mixture from the gas-powder mixer up to the upper end of the lance in the rack mounted on the lid. <IMAGE> |
