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Improved solder production process

A technology of solder and fresh feed, applied in the direction of welding/cutting medium/material, welding equipment, welding medium, etc., can solve problems such as poor separation

Active Publication Date: 2020-08-21
METALLO BELGIUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Another problem with the DE 102012005401 A1 method is that the separation is also relatively poor in the last step, in which most of the valuable metals remaining in the slag from which the crude mixed tin The third step of

Method used

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  • Improved solder production process
  • Improved solder production process
  • Improved solder production process

Examples

Experimental program
Comparison scheme
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Embodiment approach

[0280] In an embodiment, the method according to the invention further comprises the step of: cooling the first coarse solder metal composition and / or the second coarse solder metal composition and / or the pre-refined solder metal composition to a temperature of at most 825°C, to produce a bath containing a first upper layer of dross that floats under the force of gravity above the first liquid melt conditioned solder phase. Applicants discovered that this further downstream processing step was able to remove significant amounts of copper and other unwanted metals from the raw solder. More details of this step can be found in WO 2018 / 060202 A1. Applicants have further discovered that this cooling step, in combination with some other downstream processing steps of the lead / tin stream, can at least partially replace the pretreatment with silicon metal mentioned elsewhere herein. This is advantageous because metallic silicon is a relatively rare process chemical, and it would be ...

Embodiment

[0303] The following examples illustrate preferred embodiments of the invention. This example is in figure 1 is further shown, where figure 1 A flowchart showing the core parts of the method according to the invention. In this process, starting with a black copper composition 1, a refined anodic grade copper product 9, a high copper metal composition by-product 22, two crude solder metal composition products 18 and 26 and three Kinds of waste residues 12, 20 and 28 etc.

[0304] exist figure 1 In , numbers indicate the following claimed features:

[0305] 1. to the black copper composition feeding of step b) (100)

[0306] 2. Fresh feed to step b) (100)

[0307] 3. The first copper refining slag

[0308] 4. The first copper-enriched metallic phase

[0309] 5. Fresh feed to step h) (200)

[0310] 6. Second copper refining slag

[0311] 7. Second copper-rich metal phase

[0312] 8. The third copper refining slag

[0313] 9. The third copper-rich metal phase - anodic ...

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Abstract

Disclosed is a process for the production of a crude solder composition (18, 26) comprising the provision of a first solder refining slag (16, 24) comprising tin and / or lead, the process further comprising the steps of (i) partially reducing (600, 1000) the first solder refining slag, thereby forming a crude solder metal composition and a second solder refining slag (19, 27), followed by separating the second solder refining slag from the crude solder metal composition, (ii) partially reducing (700, 1100) the second solder refining slag, thereby forming a second lead-tin based metal composition (10, 29) and a second spent slag (20, 28) followed by separating the second spent slag from the second lead-tin based metal composition, characterized in that a copper containing fresh feed (50, 55)is added to step (ii), preferably before reducing the second solder refining slag.

Description

technical field [0001] The invention relates to the production of non-ferrous metals by pyrometallurgy, in particular to the production of so-called solder products. More specifically, the present invention relates to an improved process for the co-production of copper and solder streams from primary and secondary feedstocks as primary products for further upgrading to commercially desirable purity metal products. Solder streams generally belong to the family of metal compositions or alloys that contain significant amounts of tin (Sn), but often not necessarily lead (Pb) at the same time. Background technique [0002] Non-ferrous metals can be produced from newly mined ore (also called primary source) or recycled material (also called secondary raw material) or a combination thereof as starting material. Recyclable materials may be, for example, by-products, waste materials, and end-of-life materials. The recovery of non-ferrous metals from secondary raw materials has beco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/04C22B15/00
CPCC22B7/04C22B5/02C22B13/025C22B15/0054C22B15/0056C22B25/02C22C9/00C22C9/06C22C9/08C22C11/04Y02P10/20B23K35/302C22B25/06C22C13/00
Inventor 伯特·克莱蒂让·迪尔克·A·戈里斯伊夫·德维斯切查尔斯·格南沃尔特·冈斯尼可·莫伦史蒂文·斯迈特斯安迪·布莱尤格尔曼斯
Owner METALLO BELGIUM