Launder for casting molten copper

A launder, molten metal technology, used in the field of manufacturing and casting molten metal, can solve problems such as cooling hot metal, achieve the effect of reducing blockage, avoiding local thermal stress, and avoiding cracking

Inactive Publication Date: 2009-10-28
OUTOTEC OYJ
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of the launder system in this publication is that, due to the chimney effect, an updraft is formed in the inclined heat launder equipped with a cover, thereby cooling the hot metal in the launder

Method used

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  • Launder for casting molten copper
  • Launder for casting molten copper
  • Launder for casting molten copper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0030] figure 1 A launder structure 10 is shown, comprising a cover part 5 and a lower launder, both comprising a metal casing, such as a steel sleeve 1,2. The heating resistor circuit 3 is arranged on a support cross-arm 32 in a groove defined by the ceramic wool insulation 11 of the cover 5 . The support cross arms 32 are arranged at equal intervals below the resistor circuit 3 . A ceramic thermal insulator 33 is arranged in the heatable region of the transverse arm 32 . The current feed terminals 31 of the heating resistor 3 pass through the cover and the insulating lining 11 of the metal jacket 1 . The molten metal 4 flows into the flow channel formed by the refractory lining 22 . The refractory lining 22 is formed from an embedded composition. The ceramic wool insulation layer 21 is arranged between the refractory lining 22 and the steel sleeve 2 . The cover 5 is placed on the lower runner, supported by it, substantially preventing gas flow and heat radiation on the ...

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PUM

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Abstract

The invention relates to a launder construction for the conveyance of molten metal. The metal flows in the lower part of the launder construction in a channel defined by a refractory mass, the launder being heat-insulated so that, in operating conditions, the metal forms a solid zone in the porous refractory mass. The essential features of the launder construction include a cover part that is provided with electrical resistors, ensuring that the metal remains melted and the launder sufficiently hot throughout the process, and a gas burner that prevents the metal from cooling under the effect of the gas flowing in the launder channel.

Description

technical field [0001] The present invention relates to a launder for making and casting molten metal, such as copper. Background technique [0002] The manufacture of copper includes the stage of casting copper anodes from blister copper in foundry equipment for the electrolytic purification of copper. Copper is directed and metered from the melting furnace through launders and sumps into the casting machine. Launders provided with steel jackets are lined with refractory material and they are either open launders or launders fitted with covers. The launder is installed with a suitable inclination to allow the melt to flow by gravity. For conveying and metering the melt, a storage tank is also required, for example a stabilizing tank, into which the melt is poured from the melting furnace so that the movement of the molten metal is kept within The stabilization tank is stabilized. In addition, intermediate tanks and metering tanks are often required. When increasing the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D35/06F27D3/14C21B7/14
CPCC21B7/14F27D3/145B22D35/06F27D3/14
Inventor J·西皮莱J·伦皮奥
Owner OUTOTEC OYJ
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