Beneficiation method for recovering copper from converting slag

A beneficiation method and a technology of blowing slag, applied in the direction of solid separation, etc., can solve the problems of difficult processing of intermediate products, poor separation effect of slag with high metal copper content, and long process flow, so as to reduce surface pollution and reduce wear and tear. The burden of ore classification and the effect of short process flow

Inactive Publication Date: 2017-11-24
HENAN YUGUANG GOLD & LEAD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Common studies on beneficiation of blowing slag include a single flotation method, which is suitable for the separation of low-grade copper smelting slag, but is not effective for the separation of slag with high copper content; there are also gravity-flotation combined method, magnetic-flotation According to the difference in physical properties between metal copper and other minerals in the slag, some copper-containing minerals such as metal copper are recovered in advance, and then other copper-containing minerals in the slag are recovered by conventional flotation methods
As far as the blowing slag is concerned, the index of the combined mineral processing method is better than that of the single flotation method, but there are problems such as long process flow and difficult handling of intermediate products

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  • Beneficiation method for recovering copper from converting slag

Examples

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Effect test

Embodiment 1

[0032] A mineral processing method for recovering copper from blowing slag, comprising the following steps:

[0033] (1) Transport the blowing slag crushed to -12mm to the first-stage ball mill for grinding, and the first-stage ball mill discharges ore and enters the first-stage cyclone for classification, and the first-stage graded sand settling obtained after classification is subjected to flash flotation to obtain the first concentrate and the first tailings, the first tailings are returned to the first stage of ball mill grinding; wherein, the mass concentration of the first stage of graded grit settling is 70%, and the occupancy rate of -0.074mm fineness in the first stage of graded grit settling is 15%;

[0034] (2) The overflow product of the first-stage cyclone enters the primary roughing to obtain the second concentrate and the tailings of the primary roughing, and the tailings of the primary roughing enter the secondary cyclone for classification. The first-stage gra...

Embodiment 2

[0045] The content of embodiment 2 is basically the same as embodiment 1, and its difference is:

[0046] The mass concentration of one section of graded grit settling described in step (1) is 65%, and the occupancy rate of fineness of -0.074mm in one segment of graded grit settling is 10%; the time of described flash flotation is 1.5min, and described The adjusting agent of flash flotation is sodium sulfide, and collector is thiocarbamate, and foaming agent is terpineol oil, and the consumption of described sodium sulfide is 100g / t, and the consumption of described thiocarbamate is 20g / t. t, the amount of pine alcohol oil is 25g / t, and the addition point of the regulator, collector, and foaming agent used in flash flotation is the pipe mouth of the first-stage cyclone for sand settling and collection.

[0047] The mass concentration of one section cyclone overflow product described in step (2) is 40%, and fineness is 65% in the one section cyclone overflow product that finene...

Embodiment 3

[0053] The content of embodiment 3 is basically the same as embodiment 1, and its difference is:

[0054] The mass concentration of one section of graded sand settling described in step (1) is 75%, and the occupancy rate of fineness in one section of graded sand settling is-0.074mm is 20%; The time of described flash flotation is 3min, and described flash flotation The regulator of fast flotation is sodium sulfide, the collector is thiocarbamate, and the foaming agent is terpineol oil, the consumption of described sodium sulfide is 200g / t, and the consumption of described thiocarbamate is 40g / t , the consumption of pine alcohol oil is 40g / t, and the addition point of the regulator, collector and foaming agent used in flash flotation is the pipe mouth of a section of cyclone sand settling and collection.

[0055] The mass concentration of one section cyclone overflow product described in step (2) is 45%, and fineness is 70% in the one section cyclone overflow product that finen...

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Abstract

The invention discloses a beneficiation method for recovering copper from converting slag. The beneficiation method comprises the following steps that (1) the converting slag subjected to grinding by a first-section ball grinding mill enters a first-section cyclone for classification, and first concentrates and first tailings are obtained by flash flotation of first-section classified set sand obtained by classification; (2) second concentrates and primary coarsely-selected tailings are obtained by primary coarse selection of first-section cyclone overflow products, second-section classified set sand is obtained after the primary coarsely-selected tailings are classified by a second-section cyclone, and the second-section classified set sand subjected to grinding by a second-section ball grinding mill returns to the second-section cyclone for classification; (3) first coarse concentrates and secondary coarsely-selected tailings are obtained by secondary coarse selection of second-section cyclone overflow products, and third concentrates and second tailings are obtained by selection of first coarse concentrates; (4) final tailings are obtained by primary scavenging and secondary scavenging of the secondary coarsely-selected tailings, and dehydrated tailings are obtained after the final tailings are concentrated and filtered; and (5) the first concentrates, the second concentrates and the third concentrates are combined into final concentrates, and copper concentrate products are obtained after the final concentrates are concentrated and filtered.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a mineral processing method for recovering copper from blowing slag. Background technique [0002] Converting slag is the waste furnace slag produced when converting matte to produce blister copper. It contains 5%-10% copper. The blowing slag is usually slowly cooled and crushed and returned directly to the smelting system as a return material. However, because the copper grade of blowing slag is lower than that of the furnace concentrate, it not only increases smelting energy consumption and production costs, but also increases the slag rate and reduces the direct recovery rate of the smelting system. [0003] As a secondary resource, the waste furnace slag is currently mainly treated by pyrolysis and flotation. The flotation method has more advantages: high concentrate grade, high recovery rate, low energy consumption, and Fe-containing 3 o 4 Low, flota...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03B9/04
CPCB03B9/04
Inventor 丁鹏王拥军赵体茂许向波卫向平常艳兵赵高峰曹军超李丕强高一轩
Owner HENAN YUGUANG GOLD & LEAD
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