Technology and apparatus for removing lead, zinc, arsenic, antimony, bismuth and tin from matte

Abstract

The invention discloses a technology for removing lead, zinc, arsenic, antimony, bismuth and tin from matte. According to the technology, lead, zinc, arsenic, antimony, bismuth and tin are evaporated in a metallic state or a sulfide state by utilizing the effect of high temperature and vacuum, so that purified matte and lead-zinc multi-component alloy are obtained. The invention also discloses an apparatus for removing lead, zinc, arsenic, antimony, bismuth and tin from matte. The apparatus comprises a matte pool or a copper matte bag, a vacuum chamber, a vacuum chamber elevating system, a gas condenser, a cloth-bag deduster and a vacuum system; the vacuum chamber is disposed above the matte pool or the copper matte bag; the bottom of the vacuum chamber is provided with an ascension pipe and a descent pipe; the vacuum elevating system, which is used to raise or lower the vacuum chamber, is connected with the vacuum chamber; and the vacuum system, the cloth-bag deduster, the gas condenser and the vacuum chamber are communicated successively. The provided technology and the apparatus are convenient to operate, safe and controllable, and easily applicable to industrialization; and the obtained lead-zinc multi-component alloy is recoverable for sale, and the economical benefit is substantial.

Description

technical field

[0001] The invention relates to a process and a device for removing lead, zinc, arsenic, antimony, bismuth and tin from matte copper, belonging to the technical field of nonferrous metal pyrometallurgy. Background technique

[0002] Extracting copper from copper sulfide ore usually adopts the method of pyrometallurgy. The general process is: copper sulfide ore→mining process→copper concentrate→smelting process→matte→blowing process→crude copper→anode furnace process→anode copper →Electrolysis process→High-purity cathode copper. In the smelting-blowing process, the specific processes and equipment used by each copper smelting enterprise are not the same, which can be roughly divided into two categories. Mat furnace, etc., one type is smelting furnace plus converter blowing, in which the smelting furnace can be flash furnace, Isa furnace, Osmelt furnace, Noranda furnace, silver furnace, bottom blowing furnace, closed blast furnace, The reverberatory furnace i...

Examples

Embodiment 1

[0053] Embodiment 1 A kind of technology and device for removing lead, zinc, arsenic, antimony, bismuth, tin from matte

[0054] The process of removing lead, zinc, arsenic, antimony, bismuth, tin from matte, the steps are as follows:

[0055] (1) Boil the matte opening of the smelting furnace, and the molten matte flows from the chute 10 into the matte pool 1 or the matte bag 2 .

[0056] (2) Before the molten matte enters the matte pool 1 or the matte bag 2, preheat the vacuum chamber 3 by baking; after the molten matte enters the matte pool 1 or the matte bag 2, stop the baking of the vacuum chamber 3 Bake preheating, withdraw the natural gas burner, and the vacuum system 15 starts pre-evacuation. When the matte melt in the matte pool 1 or the copper matte bag 2 reaches a predetermined liquid level, the vacuum chamber 3 is lowered so that the ascending pipe 4 and the descending pipe 5 are immersed in the matte melt to a certain depth. Open the vacuum valve 6 and evacuate ...

technical field

[0001] The invention relates to a process and a device for removing lead, zinc, arsenic, antimony, bismuth and tin from matte copper, belonging to the technical field of nonferrous metal pyrometallurgy. Background technique

[0002] Extracting copper from copper sulfide ore usually adopts the method of pyrometallurgy. The general process is: copper sulfide ore→mining process→copper concentrate→smelting process→matte→blowing process→crude copper→anode furnace process→anode copper →Electrolysis process→High-purity cathode copper. In the smelting-blowing process, the specific processes and equipment used by each copper smelting enterprise are not the same, which can be roughly divided into two categories. Mat furnace, etc., one type is smelting furnace plus converter blowing, in which the smelting furnace can be flash furnace, Isa furnace, Osmelt furnace, Noranda furnace, silver furnace, bottom blowing furnace, closed blast furnace, The reverberatory furnace i...

Examples

Embodiment 1

[0053] Embodiment 1 A kind of technology and device for removing lead, zinc, arsenic, antimony, bismuth, tin from matte

[0054] The process of removing lead, zinc, arsenic, antimony, bismuth, tin from matte, the steps are as follows:

[0055] (1) Boil the matte opening of the smelting furnace, and the molten matte flows from the chute 10 into the matte pool 1 or the matte bag 2 .

[0056] (2) Before the molten matte enters the matte pool 1 or the matte bag 2, preheat the vacuum chamber 3 by baking; after the molten matte enters the matte pool 1 or the matte bag 2, stop the baking of the vacuum chamber 3 Bake preheating, withdraw the natural gas burner, and the vacuum system 15 starts pre-evacuation. When the matte melt in the matte pool 1 or the copper matte bag 2 reaches a predetermined liquid level, the vacuum chamber 3 is lowered so that the ascending pipe 4 and the descending pipe 5 are immersed in the matte melt to a certain depth. Open the vacuum valve 6 and evacuate ...

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