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Slag returning method for reducing gold content of smelting slag

A technology of smelting slag and gold content, which is applied in the field of smelting slag return, can solve the problems of not very ideal, high gold content in smelting slag, unsatisfactory gold and silver recovery rate, etc., achieve stable indicators, low gold content in smelting slag, and return slag method simple and effective effect

Active Publication Date: 2012-07-04
HENAN ZHONGYUAN GOLD SMELTERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the gold content in the returned smelting slag is still relatively high, which is not ideal, generally greater than 150g / t, and the recovery rate of gold and silver is not ideal

Method used

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  • Slag returning method for reducing gold content of smelting slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A method of returning slag to reduce the gold content of smelting slag. The processing capacity of smelting slag is 508kg: before the smelting slag is returned to the pot, use a slag scoop to skim off the graphite slag floating on the smelting slag. Coat a layer of acetylene ash with a thickness of 0.18mm, and then scoop the returned smelting slag into the inverted cone pier mold, and vibrate the pier mold (with a hammer head weighing 1000g in two minutes to manually beat it evenly) pier mold outer wall 13 times), after cooling, the smelting slag is knocked out, and the returned alloy at the smelting slag slag tip part is knocked off and recovered.

Embodiment 2

[0017] A method of returning slag to reduce the gold content of smelting slag. The processing capacity of smelting slag is 510kg: before the smelting slag is returned to the pot, use a slag scoop to skim off the graphite slag floating on the smelting slag. Coat a layer of acetylene ash with a thickness of 0.13mm, then scoop the returned smelting slag into the inverted cone pier mold, and vibrate the pier mold (with a hammer head weighing 750g in two minutes to manually beat the pier mold outer wall 12 times), after cooling, the smelting slag is knocked out, and the returned alloy at the tip of the smelting slag is knocked off and recovered.

Embodiment 3

[0019] A method of returning slag to reduce the gold content of smelting slag. The processing capacity of smelting slag is 506kg: before the smelting slag is returned to the pot, use a slag scoop to skim off the graphite slag floating on the smelting slag. Coat a layer of acetylene ash with a thickness of 0.15mm, and then scoop the returned smelting slag into the inverted cone pier mold, and vibrate the pier mold (with a hammer head weighing 500g in two minutes to manually beat it evenly) pier mold outer wall 10 times), after cooling, the smelting slag is knocked out, and the returned alloy at the tip of the smelting slag is knocked off and recovered.

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Abstract

The invention belongs to the technical field of smelting slag returning in the smelting industry, and particularly discloses a slag returning method for reducing the gold content of smelting slag, which comprises the following steps of: before the smelting slag is returned and discharged out of a furnace, completely clearing kish slag floating above the smelting slag, simultaneously coating acetylene ash onto the inner wall of a heading die, scooping the returned smelting slag into the heading die, vibrating the heading die, cooling the smelting slag, discharging the smelting slag, and knocking returned alloys at the bottom part of the smelting slag off for recovery. The slag returning method of the invention has the advantages of simplicity, effectiveness and capability of reducing the gold content of the smelting slag to be less than or equal to 80g / t only by once returning; and the returned smelting slag has low gold content and stable index.

Description

technical field [0001] The invention belongs to the technical field of smelting slag returning in the smelting industry, and in particular relates to a slag returning method for reducing the gold content of smelting slag. Background technique [0002] At present, in the domestic refining process, the gold-containing smelting slag produced by pyro-smelting generally contains 300-800g / t of gold. In order to further reduce the gold content of the smelting slag and increase the recovery rate of gold and silver, the smelting slag should be returned to the slag to further increase the recovery rate of gold and silver. However, the gold content of the returned smelting slag is still relatively high, which is not very ideal, generally greater than 150g / t, and the recovery rate of gold and silver is not ideal. Contents of the invention [0003] The object of the present invention is to provide a slag returning method for reducing the gold content of smelting slag. [0004] In ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B11/00
CPCY02P10/20
Inventor 郭步河杜主义蔺少民李友亮
Owner HENAN ZHONGYUAN GOLD SMELTERY
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