Electroslag remelting device and method for refining metal scraps

A technology of electroslag remelting and scrap metal, which is applied in the field of metal refining and electroslag remelting, to achieve the effect of large contact area, good refining effect and avoiding the increase of carbon content

Active Publication Date: 2018-07-06
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides an electroslag remelting device and method for refining waste metal scraps, which solves the problems existing in the prior art. Refining without pollution of refractory materials and increase of carbon content

Method used

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  • Electroslag remelting device and method for refining metal scraps
  • Electroslag remelting device and method for refining metal scraps
  • Electroslag remelting device and method for refining metal scraps

Examples

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Embodiment 1

[0034] An electroslag remelting device for refining scrap metal scrap provided in this embodiment is as follows: figure 1 As shown, including water-cooled crystallizer 3, electrode, bottom water tank 6, power control cabinet 8, cable 7, column 10 and lifting cross arm 11, water-cooled crystallizer 3 is placed on bottom water tank 6, and the top of described water-cooled crystallizer 3 A vibrating feeder 2 for adding scrap metal scraps is provided, the electrode is a water-cooled electrode 1, and the water-cooled electrode 1 is installed on a lifting cross arm 11, and one end of the lifting cross arm is connected to a column and can be lifted up and down along the column The water-cooled electrode pair is inserted into the water-cooled crystallizer; the lifting cross arm 11 and the bottom water tank 6 are respectively connected to the power control cabinet 8 through cables 7 .

[0035] The water-cooled electrode 1 is a tube-in-tube structure made of red copper, and its structur...

Embodiment 2

[0049] In this example, electroslag remelting is carried out for high-priced recycled metal nickel scraps, and CaF 2 -Al 2 o 3 -CaO-MgO quaternary slag system, the proportion is CaF 2 Accounted for 55%, Al 2 o 3 30%, CaO 10%, MgO 5% (by weight), and the slag thickness is 350mm.

[0050] Step 1: Connect the water-cooled electrode to the cooling water pipe, and connect the cooling water. In this embodiment, the outer diameter of the water-cooled electrode is 210 mm, the wall thickness of the outer tube of the water-cooled electrode is 25 mm, and the wall thickness of the inner tube is 4 mm;

[0051] Step 2: When the temperature of the slag rises to 1600°C, pour the liquid pre-slag into the crystallizer. In this embodiment, the inner diameter of the crystallizer is 500mm;

[0052] Step 3: Lift the water-cooled electrode with a bridge crane, connect the upper end of the water-cooled electrode with the lifting cross arm, and then insert it into the liquid pre-melted slag in th...

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Abstract

The invention provides an electroslag remelting device and an electroslag remelting method for refining metal scraps. The electroslag remelting device at least comprises a water-cooled crystallizer, an electrode, a bottom water tank, a power control cabinet and cables, wherein the water-cooled crystallizer is placed on the bottom water tank; a vibrating feeder for adding the metal scraps is arranged at the top of the water-cooled crystallizer; the electrode is a water-cooled electrode; the water-cooled electrode is mounted on a lifting cross arm; one end of the lifting cross arm is connected with an upright column, and can rise and fall along the upright column; the water-cooled electrode is inserted into the water-cooled crystallizer in a centering manner; the lifting cross arm and the bottom water tank are connected with the power control cabinet through the cables respectively. The electroslag remelting device is simple in structure and convenient to use, can effectively refine themetal scraps, does not bring refractory pollution, and does not cause an increase in the carbon content.

Description

technical field [0001] The invention belongs to the technical field of metal refining and electroslag remelting, in particular to an electroslag remelting device and method for refining scrap metal scraps. Background technique [0002] At present, the electrolysis method has been widely used in large-scale industrial production of high-purity metals, such as metal manganese, nickel, copper, etc. In the production process, the metal ore is electrolyzed after crushing, leaching, and purification. After the electrolysis is completed, the cathode plate with the electrodeposited metal is taken out, and after passivation, washing, and drying, the qualified high-purity metal is stripped. Electrolytic metals with excessive impurities such as sulfur and phosphorus will remain on the cathode plate, which are called electrolytic metal scraps. In order to reduce the impurity content in the electrolytic metal scrap, the current practice is to use an induction furnace to remelt and refin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B9/187
Inventor 李光强王强刘昱张钊卢汝
Owner WUHAN UNIV OF SCI & TECH
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