TH385EX - The continuous process of direct smelting of lead From materials containing lead and sulfur - Google Patents

Abstract

The residue and lead are moved opposite each other in the smelting furnace, which runs horizontally. And has an atmosphere of gas through Against the dross part In order to maintain the temperature of the bath Annealed and to perform at the lowest temperature. As far as possible by preventing the sink being too cold Therefore, the temperature of the melting bath in the oxidizing region is controlled. To be maintained by controlling the ratio of oxidized sulfur It was connected to oxygen in such a way that when the temperature increased, the sulfur to oxygen ratio was increased to reduce the lead content. Oxides in metal dross And in the event of a lower temperature, the sulfur-to-oxygen ratio is reduced in order to Increase the amount of lead oxide in the dross. And increasing and decreasing rates This fraction of sulfur to oxygen is controlled by a known precursor. Then to the fact that the amount of heat of gas entering the region Reducing to the oxidizing zone varies with the amount of lead. Oxides in metal dross

Claims (1)

1. A continuous process for smelting lead from matter containing lead and sulfur. This is done in a long horizontal smelting furnace, which has a melting basin consisting of dross and slag sections. Of lead in the furnace Has made the part of the dross and Parts of lead through the smelting furnace in opposite directions. And has a gas atmosphere Through the smelting furnace against the part of the dross With blowing oxygen into Into the melting basin at a controlled rate through the lower entrance Of the basin in the oxidizing zone Which is left on the side, that is, the side where the lead is removed Leaded objects and rubber bands are entered.