▎ 摘　　要

NOVELTY - Comprehensive utilization of needle slag removal in a zinc smelting process involves controlling 28-32% of the sulfur content of the drill tip, then mixing it with the nickel-cobalt abrasive, and mixing it with to be the raw material for the smelting of the tongs, smelting oxygen-enriched side-blowing in the blast furnace for homogeneous, and adding modification coke carbon, control the calorific value of more than 1500 kcal oxygen blowing air volume makes the smelting degree of the combustion pool 1300-1400 Y, and the metal is evenly obtained what arrives is secondary zinc oxide, ball-milling the product produced by blast furnace for a long time to reach 70-80 meshes, after the mesh, use sulfuric acid high-pressure oxygen leaching to control the temperature during the leaching process at 120-130 °C, the leaching end point acidity pH value is 1-2 to obtain the mixed solution of the leaching solution is nickel cobalt. USE - Method for comprehensive utilization of cobalt-removing slag in zinc smelting process. ADVANTAGE - The method has enabled efficient removal of cobalt slag in the zinc smelting process with a high recovery rate of zinc, low cost, high leaching rate of nickel and cobalt, and excellent economic benefit, the high-pressure oxygen leaching not only has a high leach rate of the nickel and the cobalt but also has high acid secondary leaching. The sulfur can be sold as a by-product, thus avoiding environmental pollution. DETAILED DESCRIPTION - Comprehensive utilization of needle slag removal in a zinc smelting process involves controlling 28-32% of the sulfur content of the drill tip, then mixing it with the nickel-cobalt abrasive, and mixing it with To be the raw material for the smelting of the tongs, smelting oxygen-enriched side-blowing in the blast furnace for homogeneous, and adding modification coke carbon, control the calorific value of more than 1500 kcal oxygen blowing air volume makes the smelting degree of the combustion pool 1300-1400 Y, and the metal is evenly obtained what arrives is secondary zinc oxide, ball-milling the product produced by blast furnace for a long time to reach 70-80 meshes, after the mesh, use sulfuric acid high-pressure oxygen leaching to control the temperature during the leaching process at 120-130 °C, the leaching end point acidity pH value is 1-2 to obtain the mixed solution of the leaching solution is nickel cobalt, the slag on the leaching liquid is sulfur, the slag under the leaching liquid is the leaching slag without completely leaching, the sulfur is used as the by-product, the leaching slag is subjected to high-acid secondary leaching and removing iron by leaching liquid after removing calcium and magnesium then extracting and removing copper by P204, then extracting and separating nickel cobalt by P507, using sulfuric acid to back extract to obtain cobalt sulfate solution evaporating and crystallizing the cobalt sulfate solution to obtain cobalt sulfate product, extracting residual liquid, using calcined soda to precipitate to obtain nickel carbonate.