Method for selectively recycling arsenic from smoke dust containing arsenic copper

A selective and soot technology, applied in chemical instruments and methods, arsenic oxide/arsenic hydroxide/oxyacid arsenic, arsenic compounds, etc., can solve the problems of difficult comprehensive utilization, long production process, etc. High, short process, high product quality effect

Inactive Publication Date: 2019-09-10
TONGREN UNIV
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Problems solved by technology

The disadvantage of the fire-wet combined treatment method is that the production process is long, and the arsenic is removed in the form of arsenic-calcium slag, which is difficult to comprehensively utilize

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  • Method for selectively recycling arsenic from smoke dust containing arsenic copper

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0018] A method for selective recovery of arsenic in arsenic-containing copper fume, comprising the following steps:

[0019] S1. The selected ingredients are: arsenic copper with 9%-20% arsenic, 2%-6% copper, 12%-20% zinc, 500g-2000g / t indium, 3%-8% tin, and 10%-20% lead soot;

[0020] S2, add the reduction coal of 3%-5% of the total mass of arsenic-copper fumes, the pyrite of 5% of the total mass of arsenic-copper fumes and the oxidation of 3% of the total mass of arsenic-...

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Abstract

The present invention discloses a method for selectively recycling arsenic from arsenic copper smoke dust, and the method includes the following steps of: selecting arsenic copper smoke dust with ingredients of 9%-20% of arsenic, 2%-6% of copper, 12%-20% of zinc, 500g-2000g/t of indium, 3%-8% of tin, and 10%-20% of lead; adding reduced coal, pyrite and copper oxide powder into selected arsenic copper dust, and fully mixing to obtain a mixture; evenly dividing the mixed mixture into four parts, respectively feeding into four identical rotary kilns for continuous roasting, and generating smoke dust and roasting slag in a roasting process; and conducting dust collection on generated smoke dust to obtain high-quality arsenic trioxide. By using the method of the present invention, arsenic in arsenic copper smoke dust can be recycled in a form of high-quality arsenic trioxide, arsenic calcium slag is not produced, and other valuable metals remain in the roasted slag, thereby achieving efficient separation and comprehensive utilization of arsenic and other valuable metals.

Description

technical field [0001] The invention relates to the technical field of comprehensive utilization of metallurgical waste, in particular to a method for selectively recovering arsenic from arsenic-containing copper fumes. Background technique [0002] During the copper fire smelting process, a large amount of arsenic in the concentrate volatilizes into the fume, forming arsenic-containing copper fume. The composition of arsenic-containing copper dust is complex. On the one hand, it contains valuable metals such as copper, lead, zinc, tin, indium, etc., which is of great recycling value; on the other hand, it contains high arsenic content, which has great potential harm to the environment. The process is complex. The efficient separation and harmless treatment of arsenic and other components in the soot are the key points and difficulties in the treatment of high-arsenic copper soot. [0003] The treatment methods of arsenic-containing copper fume mainly include fire method, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/02C22B1/02C01G28/00
CPCC01G28/005C22B1/02C22B7/02Y02P10/20
Inventor 李学鹏王娟
Owner TONGREN UNIV
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