Lead dross treatment method

A treatment method, the technology of lead scum, applied in the field of metal processing, can solve the problems of low crude lead output rate, complex process, high energy consumption, etc., and achieve the effects of good environmental protection effect, wide material adaptability, and large processing capacity

Inactive Publication Date: 2016-05-04
WESTERN MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of low crude lead output rate, high energy consumption and complicated process in the existing lead scum treatment method, and proposes a lead scum treatment method

Method used

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  • Lead dross treatment method

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Embodiment Construction

[0017] Functional Overview

[0018] Considering the problems of low crude lead yield, high energy consumption and complex process in existing lead scum treatment methods, a lead scum treatment method was proposed to solve related problems.

[0019] Embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other, all within the protection scope of the present invention. In addition, for ease of description, step numbers are used hereinafter, but this should not be construed as a limitation to the present invention. In addition, although the various steps described in the following methods show a logical order in the flowchart, in some cases In this case, the steps shown or described may be performed in an order different from that herein.

[0020] method embodimen...

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Abstract

The invention belongs to the field of metal processing, and particularly relates to a lead dross treatment method. The lead dross treatment method comprises the steps that (1), a mixed material formed by mixing lead dross, sodium carbonate, coke and scrap iron according to a certain proportion is fed into a drying system to be dried; (2), the dried mixed material enters a Kaldo furnace to be heated up; (3), the mixed material in the Kaldo furnace is all molten, and after the Kaldo furnace is rotated at a high speed for a period of time, the rotation speed is decreased slowly to below 2 r/min; and (4), after no sharp reaction exists in the Kaldo furnace, a furnace body in the Kaldo furnace stops rotating, and crude lead is generated. The lead dross treatment method provided by the invention has the characteristics of being high in automation degree, high in thermal efficiency, good in lead and copper separation effect, large in handling capacity, high in one-time productivity of the crude lead, good in environment protection effect and the like.

Description

technical field [0001] The invention belongs to the technical field of metal processing, and in particular relates to a method for treating lead scum. Background technique [0002] Due to the impurity contained in the raw material of lead concentrate, the purity of crude lead produced by different products is generally in the range of 96%-99%, of which 1%-4% is precious metals such as gold, silver, selenium, antimony and other rare metals as well as copper, nickel, tin, Bismuth, arsenic and other impurity metals. The value of precious metals in crude lead sometimes exceeds the value of lead. In order to effectively enrich and recycle these valuable metals, crude lead must be subjected to necessary refining treatment. [0003] The refining process is divided into fire refining and electrolytic refining. In the electrolytic refining process of crude lead, when the copper in the anode plate is greater than 0.06%, it will cause the anode slime to become hard and dense, hinderin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/00C22B13/02
CPCC22B7/001C22B7/04C22B13/025C22B15/0054Y02P10/20
Inventor 蔡文陈万群毛成桥李贵安张生佩林发强靳宝贞刘春胜靳文德罗鹏翔刘吉良宏新亮李永红朱建海王桂香郭光正唐伟李琴
Owner WESTERN MINING CO LTD
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