CN103341411B - Leaching residue grading and series flotation method for complex copper mine - Google Patents
Leaching residue grading and series flotation method for complex copper mine Download PDFInfo
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Abstract
The invention discloses a leaching residue grading and series flotation method for complex copper mine. The method comprises the working procedures of leaching residue grading, fine flotation and coarse flotation. Particularly, the leaching residue grading comprises the step of dividing leaching residues for hydrometallurgy of copper into fine-grained mine and coarse-grained mine according to a sieve of 60-100 meshes. The fine flotation comprises the step of carrying out series roughing selection, scavenging and fine selection for two to three times on the fine-grained mine to obtain concentrate 1, wherein the fine-grained mine is obtained through grading. The coarse flotation comprises the steps of grinding the coarse-grained mine obtained through grading until the fineness reaches 80% of less than 200 meshes, arranging and connecting the coarse-grained mine in series, carrying out roughing selection for one to two times, scavenging and fine selection for two to three times on mine discharge series to obtain concentrate 2. According to the method, the leaching residues for hydrometallurgy of the low-grade and complex mine with oxygen and sulfur mixed are graded firstly, then the different series flotation and tailing reusing processes are adopted respectively, the mineral recovery rate can be improved to 75-85% of comprehensive recovery from 30-50% of single wet dump leaching, the grade of the leaching residues is reduced to 0.2% or even lower from 0.5% of pre-flotation, the effect of comprehensive recovery is obvious, and meanwhile the pollution to environment by the leaching residues is reduced.
Description
Technical field
The invention belongs to non-ferrous metal ore technical field, be specifically related to the classification series connection method for floating that slag is soaked in dump leaching that is complicated, Treating Low-grade Copper Ores such as a kind of Complicated Copper ore wet process copper metallurgy leaching slag, particularly oxysulphied etc.
Background technology
Copper ashes is the waste residue of output in copper mine smelting process, and its typical composition: Fe is 30 ~ 40%, SiO
2be 35 ~ 40%, Al
2o
3≤ 10%, CaO≤10%, Cu are 0.5 ~ 2.1%, different smelting processes its form difference to some extent, wherein copper exists with vitreous copper (CuS), metallic copper and cupric oxide form.
Along with the fast development of China's copper smelt industry and deepening continuously of extraction industry, naturally the copper ore resource deposited is composed increasingly exhausted, copper resource wretched insufficiency, in the explored copper resource in the whole nation, cupric accounts for 56% of reserves below 0.7%, unmind in the copper resource of utilization to have and over halfly belong to Treating Low-grade Copper Ores, Copper Ores mining grade declines gradually.Based on the increase of low-grade, the refractory ore of high oxidation copper, vitreous copper (CuS) equal size, and to SO
2the common concern of the environmental pollution caused, the fluctuating widely and have compared with pyrogenic process that energy consumption is low, environmental pollution is less, the wet type copper smelting of low-grade ore recovery rate high advantage of copper valency in recent years, particularly SX-EW technique (leaching-extraction-electrode) is paid much attention to, this technology can reach very large production scale and very high mechanization, automatization level, has become a kind of important copper smelting method.For the slag that copper smelting by pyrometallurgy, floating process produce, the ripe recovery process such as the dilution of the international and domestic pyrogenic process of employing respectively, wet-leaching and float glass process enrichment, achieve good recovery economic and social benefit.In contrast, the leaching slag of copper content more than 0.5% of existing wet type copper smelting technical process output, although there is laboratory attempt to adopt Bioleaching or Oxidation Leaching-extraction-electrode process back production further to leaching slag, but because extract technology is complicated, the cycle is long, also do not obtain large-scale industrial application checking; At present, wet method leaching slag major part is not utilized effectively, especially for some oxysulphied ore deposits, the copper leaching rate of about 30 ~ 50% can only be reached with single wet-method for leaching, that is, in leaching slag, also remaining copper metal amount is about 50 ~ 70%, and major part is piled up with a large amount of land occupation of slag form, little part utilizes as construction material, and the waste and a large amount of land resource that cause copper resource are left unused.Wet-leaching due to copper mine generally adopts chlorination leaching process and sulphation lixiviation process, and the long-pending meeting of leaching slag muck not adding process forms acid pollution and heavy metal pollution to environment, serious threat safety of surrounding environment.
Summary of the invention
Slag, particularly oxysulphied etc. are complicated, the classification series connection method for floating of the dump leaching of Treating Low-grade Copper Ores leaching slag to the object of the present invention is to provide a kind of Complicated Copper ore wet process copper metallurgy to soak.
The object of the present invention is achieved like this: comprise the classification of leaching slag, fine particles flotation, coarse flotation operation, specifically comprise:
A, the classification of leaching slag: the separation determined according to embedding cloth fractional analysis by the leaching slag of wet type copper smelting, be divided into the lower particulate ore deposit of sieve and the upper coarse grain ore deposit of sieve after screening;
B, fine particles flotation: particulate ore deposit series connection classification obtained is roughly selected and scans and selectedly obtains concentrate 12 ~ 3 times;
C, coarse flotation: coarse grain ore deposit ore grinding classification obtained accounts for more than 80% to fineness-200 order, ore discharge series connection 1 ~ 2 is roughly selected and is scanned and selectedly obtains concentrate 22 ~ 3 times.
The present invention is to complicated copper mine, particularly the wet type copper smelting leaching slag of oxysulphied, Treating Low-grade Copper Ores is according to the embedding cloth situation of grade of difference leaching slag, productive rate and assay are calculated to each grade leaching slag, determine that leaching slag needs the grade separation of ore grinding, then roughly select for employing of directly connecting by particulate ore deposit under the sieve after separation screening, to scan and repeatedly selected respectively, finally obtain concentrate 1; And first carry out ore grinding to fineness-200 order account for more than 80% for coarse grain ore deposit on the sieve after screening, then employing of connecting is roughly selected, is scanned and repeatedly dressing process, finally obtains concentrate 2.The present invention composes according to valuable metal and deposits the hydrophilic and lipophile qualitative difference of phase surface, by adopting, there is the series multistage float glass process separation and concentration mining and ore dressing process that technique is simple, power consumption is low, process cycle is short, and concentrate multistage screening and mine tailing multiplex technique, coordinate wet type copper smelting technique, reach the comprehensive recovery and concentrate grade that both effectively improve copper in complicated copper mine, reduce and finally soak cinder grade, thus improve the utilization rate of copper ore resource, decrease leaching slag to the pollution of environment simultaneously.
Accompanying drawing explanation
Fig. 1 is a kind of typical process flow schematic diagram of the present invention.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated, but limited the present invention never in any form, and any change done based on training centre of the present invention or improvement, all belong to protection scope of the present invention.
As shown in Figure 1, the present invention includes the classification of leaching slag, fine particles flotation, coarse flotation operation, specifically comprise:
A, the classification of leaching slag: the separation determined according to embedding cloth fractional analysis by the leaching slag of wet type copper smelting, be divided into the lower particulate ore deposit of sieve and the upper coarse grain ore deposit of sieve after screening;
B, fine particles flotation: particulate ore deposit series connection classification obtained is roughly selected and scans and selectedly obtains concentrate 12 ~ 3 times;
C, coarse flotation: coarse grain ore deposit ore grinding classification obtained accounts for more than 80% to fineness-200 order, ore discharge series connection 1 ~ 2 is roughly selected and is scanned and selectedly obtains concentrate 22 ~ 3 times.
The raw ore material ore grinding of described wet type copper smelting is to fineness at below-3mm, or described leaching slag accounts for more than 65% to fineness at-200 orders through ore grinding before leaching slag classification operation.
Described screening copper is soaked slag to be divided into the lower particulate ore deposit of sieve and the upper coarse grain ore deposit of sieve by 60 ~ 100 mesh sieves.
Particulate ore deposit in described fine particles flotation operation successively through roughly selecting, scanning, selected I, selected II, selected III operation obtains concentrate 1 and mine tailing and chats.
Coarse grain ore deposit in described coarse flotation operation successively through ore grinding, roughly select I ', roughly select II ', scan ', selected I ', selected II ', selected III ' operation obtains concentrate 2 and mine tailing and chats.
Described particulate ore deposit is after roughly selecting operation, and the concentrate obtained is as the raw material of selected I operation, and mine tailing is as the raw material scanning operation.
Describedly scan concentrate that operation the obtains raw material as selected I operation, mine tailing enters tailing pit.
The concentrate that the selected operation of described upper level obtains as the raw material of the selected operation of next stage until final recleaner flotation operation obtains concentrate 1.
The mine tailing of described selected I operation output enters tailing pit or as the raw material chats roughly selecting operation in coarse flotation operation.
Described selected II and/or the mine tailing of selected III operation as the raw material chats roughly selecting operation or selected operation in coarse flotation operation.
Described ore particle is after roughly selecting I ' operation, and the concentrate obtained is as selected II ' or the raw material of selected I ' operation, and mine tailing is as the raw material roughly selecting II ' operation.
Described roughly select II ' operation after, the concentrate obtained is as selected I ' or the raw material of selected II ' operation, and mine tailing is as scanning ' raw material.
Describedly to scan ' concentrate that obtains of operation is as the raw material of selected I ' operation, and mine tailing enters tailing pit; The concentrate that the selected operation of described upper level obtains as the raw material of the selected operation of next stage until final recleaner flotation operation obtains concentrate 2.
The mine tailing of described selected I ' operation output enters tailing pit or as roughly selecting I ' or roughly select the raw material chats of II ' operation.
The mine tailing that the selected operation of described next stage obtains is as the raw material chats of the selected operation of upper level.
Carry out magnetic separation to rough grain before described coarse flotation operation, the non magnetic ore that described magnetic separation obtains is as concentrate, and magnetic mineral is as the raw material of coarse flotation operation.
The equipment magnetic field intensity of described magnetic separation controls at 1000 ~ 2000 Oe(oersteds).
Describedly roughly select and/or be added with the collecting agents such as ethyl xanthate, butyl xanthate, KM109 and/or Z-200 in selected operation.
Describedly roughly select and/or scan in operation activators such as being added with sodium sulphate, copper sulphate and/or plumbi nitras.
Embodiment 1
As shown in Figure 1, by the low copper high-sulfur ore deposit of-3mm grade with SX-EW method dump leaching process, get the residue after leaching 1 ton leaching slag Tyler screen and divide by 60 mesh sieves, obtain under-60 mesh sieves that on particulate ore deposit and+60 mesh sieves coarse grain ore deposit.-60 order particulate ore deposits enter tank diameter, and interpolation butyl xanthate and terpenic oil are sized mixing to enter and roughly selected operation routinely; Ore pulp after roughly selecting is as the raw material of selected I operation, and underflow is as the raw material scanning operation; Add butyl xanthate and terpenic oil routinely to enter and scan flotation cell, scan the raw material of foam as selected I operation, scan ore pulp and enter tailing pit as mine tailing 1 and store up; Every one-level stock runner sequence adds collecting agent and dispersant routinely, and the foam of the selected operation of upper level is as the raw material of the selected operation of next stage, selected until final recleaner flotation operation foam obtains concentrate 1 through three grades; The underflow of selected I operation enters tailing pit as mine tailing 2 and stores up, and the underflow of selected II operation roughly selects the raw material chats 1 of I ' as+60 order coarse grain ore deposits, and the underflow of selected III operation is as the raw material chats 2 in+60 order coarse grain ore deposits selected I '.
+ 60 selected wet grindings in order coarse grain ore deposit account for more than 80% to fineness-200 order, ore discharge enters tank diameter, interpolation ethyl xanthate and terpenic oil are sized mixing to enter and are roughly selected I ' operation routinely, roughly select the raw material of the ore pulp after I ' as selected II ' operation, underflow is sized mixing as the raw material roughly selecting II ' operation routinely, roughly select the raw material of the ore pulp after II ' as selected I ' operation, underflow is as the raw material scanning I ' operation; Add ethyl xanthate and terpenic oil routinely to enter and scan I ' flotation cell, scan the raw material of foam as selected I ' operation, scan ore pulp and enter tailing pit as mine tailing 3 and store up; Every one-level stock runner sequence adds collecting agent and dispersant routinely, and the foam of the selected operation of upper level is as the raw material of the selected operation of next stage, selected until final recleaner flotation operation foam obtains concentrate 2 through three grades; The underflow of selected I ' operation as the raw material roughly selecting I ' operation, the underflow of selected II ' operation as the raw material of selected I ' operation, the underflow of selected III ' operation as selected II ' raw material.
The comprehensive grade merging concentrate 1 and concentrate 2 is about 17%, and the comprehensive grade of mine tailing 1, mine tailing 2 and mine tailing 3 is about 0.2%, the leaching slag copper content rate of recovery about 63%.
Embodiment 2
By the low-grade high-sulfur ore deposit of-2.5mm grade with SX-EW method dump leaching process, get the residue after leaching 1 ton leaching slag Tyler screen and divide by 80 mesh sieves, obtain under-80 mesh sieves that on particulate ore deposit and+80 mesh sieves coarse grain ore deposit.-80 order particulate ore deposits enter tank diameter, add butyl xanthate, sodium sulphate and terpenic oil routinely and size mixing to enter and roughly select operation; Ore pulp after roughly selecting is as the raw material of selected I operation, and underflow is as the raw material scanning operation; Add butyl xanthate and terpenic oil routinely to enter and scan flotation cell, scan the raw material of foam as selected I operation, scan ore pulp and enter tailing pit as mine tailing 1 and store up; Scan foam and add dispersant routinely through selected I operation, gained foam adds the raw material of dispersant as selected II operation routinely, obtains foam as concentrate 1 through selected II operation; The underflow of selected I operation is as the raw material roughly selecting operation, and the underflow of selected II operation is as the raw material of selected I operation.
+ 80 selected wet grindings in order coarse grain ore deposit account for more than 85% to fineness-200 order, ore discharge enters tank diameter, add butyl xanthate, sodium sulphate and terpenic oil routinely to size mixing to enter and roughly select I ' operation, roughly select the raw material of the ore pulp after I ' as selected I ' operation, underflow is sized mixing as the raw material scanning I ' operation routinely; Add butyl xanthate and terpenic oil routinely to enter and scan I ' flotation cell, scan the raw material of foam as selected I ' operation, scan ore pulp and enter tailing pit as rougher tailings 2 and store up; Every one-level stock runner sequence adds collecting agent and dispersant routinely, and the foam of the selected operation of upper level is as the raw material of the selected operation of next stage, selected until final recleaner flotation operation foam obtains concentrate 2 through three grades; The underflow of selected I ' operation as the raw material roughly selecting I ' operation, the underflow of selected II ' operation as the raw material of selected I ' operation, the underflow of selected III ' operation as selected II ' raw material.
The comprehensive grade merging concentrate 1 and concentrate 2 is about 16%, and the comprehensive grade of mine tailing 1 and mine tailing 2 is about 0.18%, the leaching slag copper content rate of recovery about 61%.
Embodiment 3
By the low-grade high-sulfur ore deposit of-4mm grade with SX-EW method dump leaching process, get the residue after leaching 1 ton leaching sizing ore deposit and account for more than 65% to fineness at-200 orders, divide by 100 mesh sieves with Tyler screen, obtain under-100 mesh sieves that on particulate ore deposit and+100 mesh sieves coarse grain ore deposit.-100 order particulate ore deposits enter tank diameter, add Z-200, copper sulphate and terpenic oil routinely and size mixing to enter and roughly select operation; Ore pulp after roughly selecting is as the raw material of selected I operation, and underflow is as the raw material scanning operation; Add Z-200 and terpenic oil routinely to enter and scan flotation cell, scan the raw material of foam as selected I operation, scan ore pulp and enter tailing pit as mine tailing 1 and store up; Every one-level stock runner sequence adds dispersant routinely, and the foam of the selected operation of upper level is as the raw material of the selected operation of next stage, selected until final recleaner flotation operation foam obtains concentrate 1 through three grades; The underflow of selected I operation enters tailing pit as mine tailing 2 and stores up, the underflow of selected II operation as selected I raw material, the underflow of selected III operation is as the raw material of selected II operation.
+ 100 selected wet grindings in order coarse grain ore deposit account for more than 90% to fineness-200 order, ore discharge enters tank diameter, add Z-200, copper sulphate and terpenic oil routinely to size mixing to enter and roughly select I ' operation, roughly select the raw material of the ore pulp after I ' as selected I ' operation, underflow is sized mixing as the raw material roughly selecting II ' operation routinely, roughly select the raw material of the ore pulp after II ' as selected I ' operation, underflow is as the raw material scanning I ' operation; Add Z-200, copper sulphate and terpenic oil routinely to enter and scan I ' flotation cell, scan the raw material of foam as selected I ' operation, scan ore pulp and enter tailing pit as mine tailing 3 and store up; Scan foam and add dispersant routinely through selected I operation, gained foam adds the raw material of dispersant as selected II operation routinely, obtains foam as concentrate 1 through selected II operation; The underflow of selected I operation is as the raw material roughly selecting II ' operation, and the underflow of selected II operation is as the raw material of selected I operation.
The comprehensive grade merging concentrate 1 and concentrate 2 is about 18%, and the comprehensive grade of mine tailing 1, mine tailing 2 and mine tailing 3 is about 0.21%, the leaching slag copper content rate of recovery about 65%.
Claims (3)
1. a complicated copper mine leaching slag classification series connection method for floating, it is characterized in that described complicated copper mine is oxysulphied, low-grade high sulfur copper ore, its method for floating comprises the classification of leaching slag, fine particles flotation, coarse flotation operation, specifically comprises:
A, the classification of leaching slag: the leaching slag of wet type copper smelting is divided into the lower particulate ore deposit of sieve and the upper coarse grain ore deposit of sieve by 60 ~ 100 mesh sieves;
B, fine particles flotation: particulate ore deposit series connection classification obtained is roughly selected and scans and selectedly obtains concentrate 12 ~ 3 times; Described particulate ore deposit is after roughly selecting operation, and the concentrate obtained is as the raw material of selected I operation, and mine tailing is as the raw material scanning operation; Describedly scan concentrate that operation the obtains raw material as selected I operation, mine tailing enters tailing pit; The mine tailing of described selected I operation output enters tailing pit or as the raw material chats roughly selecting operation in coarse flotation operation, selected II or the mine tailing of selected II, selected III operation as the raw material chats roughly selecting operation or selected operation in coarse flotation operation;
C, coarse flotation: coarse grain ore deposit ore grinding classification obtained accounts for more than 80% to fineness-200 order, ore discharge series connection 1 ~ 2 is roughly selected and is scanned and selectedly obtains concentrate 22 ~ 3 times; When carrying out one roughing, roughly select after I ' operation through ore particle, the concentrate obtained is as selected II ' or the raw material of selected I ' operation, and mine tailing is as scanning ' raw material; When carrying out roughly selecting for twice, ore particle is after roughly selecting I ' operation, and the concentrate obtained is as selected II ' or the raw material of selected I ' operation, and mine tailing is as the raw material roughly selecting II ' operation; Described roughly select II ' operation after, the concentrate obtained is as selected I ' or the raw material of selected II ' operation, and mine tailing is as scanning ' raw material; Describedly to scan ' concentrate that obtains of operation is as the raw material of selected I ' operation, and mine tailing enters tailing pit; The concentrate that the selected operation of described upper level obtains as the raw material of the selected operation of next stage until final recleaner flotation operation obtains concentrate 2;
Roughly select and/or be added with in selected operation ethyl xanthate, butyl xanthate, KM109 and/or Z-200 described in B, step C as collecting agent; Described roughly select and/or scan in operation be added with sodium sulphate, copper sulphate and/or plumbi nitras as activator.
2. classification series connection method for floating according to claim 1, is characterized in that the raw ore material ore grinding of described wet type copper smelting to fineness at below-3mm, or described leaching slag accounts for more than 65% to fineness at-200 orders through ore grinding before leaching slag classification operation.
3. classification according to claim 1 series connection method for floating, is characterized in that the mine tailing of described selected I ' operation output enters tailing pit or as roughly selecting I ' or roughly select the raw material chats of II ' operation; The mine tailing that the selected operation of described next stage obtains is as the raw material chats of the selected operation of upper level.
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| CN104646172A (en) * | 2015-01-13 | 2015-05-27 | 黄石大江集团有限公司 | Method for floating copper from electric furnace slag |
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| CN105435970B (en) * | 2015-12-28 | 2018-08-03 | 昆明理工大学 | A kind of ore-dressing technique of copper smelting-furnace slag flotation recycling copper |
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| CN111036391B (en) * | 2019-11-20 | 2021-10-01 | 北京矿冶科技集团有限公司 | Method for recovering copper minerals from copper-sulfur separation tailings |
| CN111282710B (en) * | 2020-03-04 | 2021-11-23 | 金川集团股份有限公司 | Asynchronous simultaneous separation process for poor and refractory nickel-copper ores |
| CN113318855B (en) * | 2021-06-02 | 2022-02-11 | 中国矿业大学 | Flotation system and process for improving quality and reducing impurities of high-clay-content low-grade chalcopyrite |
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