CN108950201B - A method of electro deposited copper is produced based on in-situ leaching low copper containing mineralization body - Google Patents

A method of electro deposited copper is produced based on in-situ leaching low copper containing mineralization body Download PDF

Info

Publication number
CN108950201B
CN108950201B CN201810872930.4A CN201810872930A CN108950201B CN 108950201 B CN108950201 B CN 108950201B CN 201810872930 A CN201810872930 A CN 201810872930A CN 108950201 B CN108950201 B CN 108950201B
Authority
CN
China
Prior art keywords
copper
mineralization
leaching
grade
liquid
Prior art date
Application number
CN201810872930.4A
Other languages
Chinese (zh)
Other versions
CN108950201A (en
Inventor
黄志德
Original Assignee
黄志德
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 黄志德 filed Critical 黄志德
Priority to CN201810872930.4A priority Critical patent/CN108950201B/en
Publication of CN108950201A publication Critical patent/CN108950201A/en
Application granted granted Critical
Publication of CN108950201B publication Critical patent/CN108950201B/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/18Extraction of metal compounds from ores or concentrates by wet processes with the aid of microorganisms or enzymes, e.g. bacteria or algae
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00Obtaining copper
    • C22B15/0063Hydrometallurgy
    • C22B15/0065Leaching or slurrying
    • C22B15/0067Leaching or slurrying with acids or salts thereof
    • C22B15/0071Leaching or slurrying with acids or salts thereof containing sulfur
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/0004Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/0005Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds, e.g. acyclic or carbocyclic compounds, heterocyclic compounds, organo- metallic compounds, alcohols, ethers, or the like
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The present invention relates to a kind of method based on in-situ leaching low copper containing mineralization body production electro deposited copper, the mining area grade Cu:0.119-0.182% of the low copper containing mineralization body, rice percentage 3.29-55.08%m.The present invention utilizes low copper containing mineralization body to inject biological acid solution for the first time and leaches copper, and through tunnel and drilling liquid collecting, extraction-back extraction-electrodeposition produces tough cathode.Compared with prior art, low copper containing mineralization body resources access has been opened up, seven times of copper resource amount has been expanded, has had medium-scale, has melted and picks up smelting Yu Yiti, be not required to extracted ore, non-environmental-pollution is reduced investment outlay, cost, has fabulous development prospect, energy-saving and emission-reduction.

Description

A method of electro deposited copper is produced based on in-situ leaching low copper containing mineralization body

Technical field

The present invention relates to a kind of methods for producing electro deposited copper, especially a kind of to be produced based on in-situ leaching low copper containing mineralization body The method of electro deposited copper belongs to non-ferrous metal and adopts smelting field.

Background technique

Nonferrous metals geology office, Yunnan Province explores Dali prefecture Porphyry Molybdenum copper mine in last century the eighties, in Midu border Interior spy obtains medium-sized Cu-Mo separation, visits within the border in auspicious cloud and obtains the small-sized copper mine of thready pulse disseminated horn stone (being detailed in attached drawing 1).1987~ 1996, auspicious cloud mining company exploited the high-grade copper mine of the secondary enrichment band in it, stays according to detailed survey report data Lower Treating Low-grade Copper Ores and close for many years.Backward since copper valence is promoted, continue to exploit the ore body in mining area more than phreatic surface, twice 192.44 ten thousand tons of Copper Ores of accumulative exploitation, 12373 tons of copper metal amount, more than phreatic surface balance resources and off-balancesheet sulphide ore are It has adopted.Still there are 1.4 ten thousand tons of off-balancesheet copper metal amount preservations in 2400~2250 meters of absolute altitudes.Strip mining transformation scheme is designed it, is counted The Cu concentrate grade country rock that large area removes million cubic metres or more is drawn, the off-balancesheet copper mine in deep then could be had an opencast mining of.It is big because needing Area destruction vegetation and mining area is in self-restraint woods upstream at county level, government disapproves and closes hole again.

The coloured mining industry technique continued to use for a long time brings serious pollution to environment, and present age whole world non-ferrous metal possesses resource With the sharply reduction and reduction of grade, it has also become an important factor for Development of Non-ferrous Metallurgy restricts;Free pollution metallurgy, which has become, to be held The inevitable choice of supervention exhibition.The pressure of environment becomes the power for pushing non-ferrous metallurgy technology progress again, facilitates in mining industry history Revolution, be born a collection of pollution-free or of low pollution metallurgical method, and is suitble to the very low ore of exploitation grade, wet process Copper metallurgy is exactly one of them, and the most advanced with in-situ leaching mining.

Last century Mo, domestic many enterprises have also carried out hydrometallurgical technology, and China's in-situ leach uranium mining has been achieved with work Industry production, and in-situ leaching adopts copper and is still in conceptual phase.

In-situ leaching is to melt geology, hydrology, chemistry, hydrometallurgy, environment-friendly engineering in the comprehensive mining skill of one Art is the crystallization of multi-crossed disciplines and infiltration development.It changes the production model in conventional mine, does not need high investment, not numerous The roadway and removing engineering of weight do not have without techniques such as Ore Transportation, ore reduction, ore grinding ore dressing and Tailings Dam construction more yet The scattered scene of raging stove fire, flue gas four.In-situ leaching mining extraction is not ore but the solution containing valuable component.And It using the very low rock of cupric, therefore is considered as an important technical revolution in world's mining history, these contributions are all Carried out by forefathers, in person just with their advanced thinking, and during gathering material on a wide scale, a large amount of wet process smeltings have been grasped Golden knowledge.How thinking research utilizes the copper in the weak mineralising country rock that off-balancesheet copper mine is largely not achieved in mining area.On realizing Purpose is stated, the beginning of the new century is precisely selected and is used as in-situ leaching between determining 102~114 exploration line of local area within the scope of long 1200 meters strong mineralising Target, through a long time analysis and research, test, in have in-situ leaching mining condition.

1, the primary condition that in-situ leaching should have

The copper mine that current world in-situ leaching mining does not develop under any geology, hydrologic condition can be applicable in, at present In-situ leaching mining is still conditional.It is considered herein that:

(1) in-situ leaching ore body must be water-filled ore deposits, just be easy to control the flow direction of leaching solution, just be conducive to liquid collecting, this is The key of in-situ leaching success or failure.

(2) ore body, mineralization body and adjacent country rock must be acid or neutral, could consume less acid in molten leaching.

(3) ore body, mineralization body copper content can be very low, but its thickness requirement is big, rice percentage >=6m%, and mineralization body is continuous Property it is good, copper component is uniform, have certain scale.

(4) mineralized rocks permeability size influences the harmony of leaching solution movement speed, it is desirable that has moderate infiltration Rate.

(5) in-situ leaching leaching velocity and leaching rate are related with copper mineral output state, when copper mineral originates in main flowing In the inside microfissure being connected in crack or with main flow crack, be conducive to the leaching velocity and leaching rate that improve copper mine.

2, in-situ leaching adopts copper-based present principles

(1) leaching of copper oxide: copper oxide is mainly malachite, chrysocolla, black copper ore, chessy copper etc., be can be used dilute Sulfuric acid directly leaches, and so that copper and sulfuric acid reaction is generated copper sulphate and enters in leaching solution and realize the separation of copper and ore, changes Reaction such as malachite and chrysocolla are learned under:

Malachite CuCO3·Cu(OH)2+2H2SO4=2CuSO4+CO2+3H2O

Chrysocolla CuSiO3·2H2O+H2SO4=CuSO4+SiO2+3H2O

Superficial part copper oxide easily leaches.

(2) Bioleaching of copper sulfide

Copper sulfide mineral mainly has vitreous copper, bornite, chalcopyrite etc., often with more pyrite.These sulfide need It is leached with Thiobacillus ferrooxidans and Thiobacillus thioxidans etc..Vitreous copper is easier to leach, and the more difficult leaching of chalcopyrite.Bacterium leaching General out there are two types of mechanism: one is bacterium is adsorbed to mineral surfaces and directly causes the direct molten of sulfide with mineral effect Solution, makes In Crystal Solid Copper become liquid CuSO4It is leached, such as:

Second is that the Fe that mineral dissolution releases2+By bacterial oxidation at Fe3+, ferric iron is extremely strong oxidant, will be vulcanized Mine dissolution occurs chemical action and is allowed to dissolve, as the chalcopyrite of indissoluble is dissolved reaction equation:

Under bacterium operation, it is H that sulphur, which is oxidized final product,2SO4, there is bornite (Cu5FeS4), chalcopyrite, pyrite (FeS2) presence, generate sulfuric acid under bacterial action;It soaks mine process and H is added2SO4It is gradually reduced to no longer acid adding;Deep Anaerobic bacteria need to be added.

It is still necessary to a large amount of copper products of import for country at present, in order to reduce copper import and catch up with and surpass world's hydrometallurgical technology, for The rock that common process can be adopted far is not achieved in copper content, how to be turned waste into wealth using in-situ leaching, allows copper in low copper containing rock It is utilized, is worth exploring.

Summary of the invention

The purpose of the present invention is to solve the deficiencies in the prior art, reduce copper import.The present invention provides a kind of based on low Rock that common process can be adopted far is not achieved as copper in copper content by the method that cupric mineralization body in-situ leaching produces electro deposited copper Mineralization body (either simplex journey Cu >=0.06%, average Cu 0.16%), carries out in-situ leaching smelting copper.

The present invention can under natural occurrence the molten intracorporal copper of leaching Cu concentrate grade of original place static injection biology bacterium solution, become In Crystal Solid Copper At liquid CuSO4, earth's surface is extracted out through liquid collecting, then by earth's surface factory extraction-back extraction-electro deposited copper.The extraction raffinate of each segment process passes through Simple process and Returning utilization after its concentration is suitably supplemented, i.e. each section of closed circuit operation of liquid circulation.

Concrete scheme of the invention is as follows:

Application of the mining area low copper containing mineralization body as in-situ leaching production electro deposited copper, the mining area product of the low copper containing mineralization body Position Cu:0.119-0.182%, rice percentage 3.29-55.08m%.

Further, the low copper containing mineralization body is cupric fine-structure mesh arteries and veins, the thready pulse disseminated that sandstone is formed through hydrothermal alteration Horn stone and mineralising granite porphyry ivernite arteries and veins.It is squeezed through multiple tectonic activity and generates many cracks, be easy to molten leaching.

Further, the low copper containing mineralization body is located at the 4th section of stratum O of group on the sunny side1x4-2

Further, the low copper containing mineralization body is located at secondary synclinal structure core portion, and secondary synclinal structure core portion is in substantially Corresponding large size strip " V " type lenticular body, axial 50~70 ° of east northeast are about 2000 meters, and both wings are lean-in, and inclination angle 20~ 40 °, mineralization body bottom has ship type ivernite water barrier, 10-65 meters of thickness, is conducive to the closing of leaching solution, and is conducive to collection Liquid.Lateral, longitudinal ship type water barrier liquid collecting rate of cupric mineralization body is high.

The production method of the present invention that molten low copper containing mineralization body electro deposited copper is soaked based on original place, is included the following steps:

The determination of step (1), the preferred section in mining area

The mining area with in-situ leaching mining condition is selected, I grade of Cu concentrate grade body is distributed between the exploration line in middle section, even 12 continuous drilling percentage containing rice 10-55.08%, area 89750m2, 70987 tons of copper resource amount, average copper grade 0.184%.In it again centered on CK1066, continuous five drilling control areas 14700m2Superficial part in range has copper oxide Based on mineralization body, average copper grade 0.201%, 18617 tons of stock number, the readily soluble copper of oxygenation efficiency 78%, the part is compatibly Table spray, processes 30 × 30m spacing shallow bore hole, and preferential development is then according to the actual situation, gradually planned to be extended to rice hundred Divide the range of rate > 10m%;Mineralising body thickness is big herein, Cu concentrate grade is strong, and resource is relatively concentrated, and external construction condition is also preferable.

Step (2) prepares molten mine liquid, produces tough cathode

It prepares molten mine liquid: with the dilute sulfuric acid that mass percent is 0.5% or so is added in liquid pool, being then added and cultivate The obtained dilute sulfuric acid bacterium solution of thiobacillus ferrooxidant or anaerobic bacteria;Wherein, thiobacillus ferrooxidant concentration >=104A/ml.

Production tough cathode: injecting in the low copper containing mineralization body or sprays molten mine liquid leaches copper, hollow place liquid collecting, when molten When more than 1 grams per liter of immersion liquid cupric, earth's surface is extracted out, be sent into collecting tank, then abstraction pool is sent by collecting tank, it is molten with organic extractant phase Immersion liquid is sent into back extraction pond after load organic phases, is stripped with the concentrated sulfuric acid, so that raffinate cupric is lower than 0.08 grams per liter, copper-rich liquid It is more than 40 grams per liter of cupric, then by copper-rich liquid power transmission product workshop, produce tough cathode, raffinate return with liquid pool adjust acidity and Supplement biological bacteria continues to use as leaching mine agent.

Further, in step (2), 100m is sprayed3Soak mine agent/day in the Cu concentrate grade body of earth's surface to superficial part copper oxide, The directly molten leaching copper oxide in original place, the molten remaining copper sulfide of leaching of biological bacteria, with CuSO4Form enter leaching solution, to phreatic surface Neighbouring low-pressure area migration, through tunnel liquid collecting, pumps earth's surface plant produced electro deposited copper.

Further, in step (2), molten leaching area is extended to cupric rice percentage >=10m% 89750m2In range, For the copper sulfide in the low copper containing mineralization body under the anaerobic environment of deep, after suction eye of having constructed, liquid injection hole and production bore, lead to Suction eye extraction Groundwater formation low-pressure area is crossed, then by the molten mine bacterium of anaerobism that liquid injection hole static injection prepares, solution is through fine-structure mesh arteries and veins The copper in it is dissolved in crack infiltration, and orientation imports low-pressure area, extracts lysate out by production bore, transports the extraction of earth's surface factory, is stripped Produce electro deposited copper.

Compared with prior art, beneficial achievement of the present invention are as follows:

(1) the main preservation of Cu concentrate grade body of the application is in thready pulse disseminated horn stone, but its copper content is 0.16%, far Lower than standard copper ore body.For routinely picking up smelting process, this mineralization body can not be utilized.The present invention is made using this Cu concentrate grade body Molten leaching object, it is copper in it without dynamic sensual pleasure, quiet mild in-situ leaching with biological bacteria acid solution, through liquid collecting extraction-back extraction- Electrodeposition produces copper, and alexandrite head is ore.Using the stone of low copper containing amount as raw material, metallic copper is produced, increases copper resource amount 11.3 ten thousand tons, 1.4 ten thousand tons of copper are left than the off-balancesheet copper-sulphide ores that deep can not exploit and increase by 9.9 ten thousand tons, have expanded seven times of copper Stock number creates copper resource frontier i.e. low copper containing mineralization body resources access, belongs to domestic initiation.

(2) in-situ leaching copper does not need extracted ore, no heavy physical labor, no ore dressing, pyrometallurgical smelting process, cleaning Pollution-free, environmental-friendly, technique is superior, innovates, energy conservation, belongs to non-pollution technology, overcomes destruction of the prior art to environment Great amount of carbon dioxide dust, serious the problem of polluting environment are released with pyrometallurgical smelting.

(3) in-situ leaching smelting copper melts mining, ore dressing and smelting in one, reduces investment outlay and production cost is low, compare pyrogenic process More than the low one third of smelting copper, exploiting economy is profitable.Electricity is produced referring to the barren rock of the molten leaching copper content 0.09% of Dexing copper industry Product copper ton cost is only 10500 yuan, and now at cost 2.0 ten thousand yuan/ton, 5.2 ten thousand yuan/ton of price estimations, in-situ leaching copper taxes and profits reach 3.2 ten thousand yuan/ton, remarkable in economical benefits.Leaching casting yield of the invention is 60%, can produce 67803 tons of level-one copper.(4) original place Molten leaching Cu concentrate grade body smelting copper method does not need extracted ore, and is the very low mineralization body of copper content, creative.Utilize the copper Mineralization body in-situ leaching produces tough cathode, and the country is first time, belongs to the another new invention in China.

(5) In Crystal Solid Copper is made to become liquid phase using the Cu concentrate grade body in-situ leaching, through liquid collecting-extraction-back extraction-electrodeposition yin Pole copper contains Cu 99.95%, and quality is more excellent than the cathode copper of the prior art (generally containing Cu 99.5%), belongs to level-one copper.

(6), as shown in table 1 using Cu concentrate grade body and conventional copper correlation of orebodies, advantage of the invention:

Contrast difference's table of table 1 in-situ leaching Cu concentrate grade body and standard copper ore body

Detailed description of the invention

Fig. 1 is the mining area terrain and geologic map of embodiment, is reduced by 1:2000, scale bar 1:5000;

Fig. 2 is the drawing in side sectional elevation of 105 exploration line of mining area of embodiment, half size scale 000;

Fig. 3 is the drawing in side sectional elevation of 106 exploration line of mining area of embodiment, half size scale 000;

Fig. 4 is the drawing in side sectional elevation of 107 exploration line of mining area of embodiment, half size scale 000;

Fig. 5 is the profilograph of the Cu concentrate grade body of embodiment, scale bar 1:5000;

Fig. 6 is Cu concentrate grade body rice percentage isogram, shows the vertical thickness of each borehole engineering control, meter Bai Fen Rate value and Engineering average grade.Continuous black line is remaining ore body and Cu concentrate grade body data of resources after copper mine body is exploited for the first time; Perforated line is the Cu concentrate grade body thickness of the present embodiment, rice fraction values and cupric average grade;Scale bar 1:3000;

Fig. 7 is reserves and grade graph of relation;

Fig. 8 is the process flow chart of the embodiment of the present invention.

Specific embodiment

Below with reference to embodiment, the present invention is described in further detail.It will be understood to those of skill in the art that following Embodiment is merely to illustrate the present invention, and is not intended as limiting the scope of the invention.Particular technique or condition are not specified in embodiment Person, technology or conditions described in the document according to this field or carries out according to product description, and material therefor and equipment are not Indicate production firm person, the conventional products that can obtain by purchase.

Embodiment 1

The mining area of the present embodiment is located at Dali Prefecture, Yunnan Province, specific Cu concentrate grade body construction location, geologic feature and copper money Source reserves are as follows:

(1) metallogenic belt construction location

As shown in FIG. 1, FIG. 1 is the mining area terrain and geologic maps of embodiment.Mining area is located at western Yangtze platform, Lijing scene-affinity Fold belt south west section, Red River discordogenic fault and chenghai fault intersection part, north-northwest face south the big anticline south to spread second level. Mining area is controlled by two groups of constructions of northwest (NW) and east northeast, has li west-Early Himalaya with acid in the cold wind mountain valley with clumps of trees and bamboo of two groups of construction intersections Property rock based on igneous invasion, formed horse factory mountain valley with clumps of trees and bamboo complex massif, in Early Himalaya intrusion porphyritic granite tongue position, The Porphyry Molybdenum Deposit of output horse factory's mountain valley with clumps of trees and bamboo mining area main body, outer contacting band output skarns and horn stone type copper-molybdenum, copper and iron and copper mine Bed.

The forward position of igneous invasion, i.e. output copper mine body and Cu concentrate grade body, the two be not bright between 102~116 exploration lines Aobvious line of demarcation is only copper content height, and grade divides copper mine body into when reaching copper mine specification set quota, up to not It is low copper containing mineralization body to copper cutoff grade, the common preservation of the two is in same synclinal structure, 50~70 ° of axial east northeast, axis 2 kms are about, organize a 4th section of (O on the sunny side by Lower Ordovician Series1x4) a small amount of limestone composition of sandstone folder, inclination angle lean-in to oblique both wings 20~40 °, Granodiorite mass and ivernite arteries and veins are invaded along interlayer, sand shale, which is eclipsed, becomes horn stone, and limestone alteration is at silicon card Rock;The former preservation copper mine body and Cu concentrate grade body, the latter's output iron copper mine body, synclinal structure control the shape of vein and mineralization body State and occurrence.

(2) Cu concentrate grade body geologic feature

Copper mine body and mineralization body are based on copper, with Microamounts of Mo and Yin Jin.Ore copper component is uniform, and vertical point of band is obvious With country rock without obvious boundary line, copper mine body thickness variation coefficient 96% belongs to compared with stable type, coefficient of variation of grade 40%.Component is uniform Type copper mine body is the conventional object for picking up smelting exploitation, and the above copper mine body of phreatic surface has been adopted.Low copper containing mineralization body is that original place is molten The raw material of leaching production electro deposited copper.

Ore mineral ingredient: primary metal mineral are mainly chalcopyrite, vitreous copper, bornite and pyrite, and a small amount of arsenic is black Copper mine, magnetic iron ore, micro molybdenite;Oxidized ore mineral are malachite, chessy copper, black copper ore, limonite etc.;Gangue mineral For quartz, secondary is feldspar, biotite, a small amount of sericite, chlorite, garnet, diopside, kaolinite etc..Copper mineral is in his shape Granular-hypidiomorphic granular is distributed along horn stone and granite porphyry crack in thready pulse, net vein shape, is on a small quantity in disseminated, scatterplot shape point It is distributed in quartz-grain gap or garnet thin layer band.0.001~0.76 millimeter of copper mineral granularity, pulse amplitude is general 1.0 millimeters thick. Ore cupric component is uniform, and the remaining off-balancesheet copper-sulphide ores of low copper containing mineralization body and deep constitute lenticular Cu concentrate grade body together, For in-situ leaching object.

Ore texture: ore have hypautomorphic granular texture, emulsion texture, surrounding edge structure, metasomatic relict texture and Crush texture;Have rete mirabile vein structure, impregnation structure, banded structure, minute quantity massive structure.

Ore oxidation degree and ore type: ore body crop out, oxidized zone development, ore body oxidation depth are 20~47 Rice, it is 33.5 meters average.Occurs 5~39 meters thick of secondary enrichment band under oxidized zone, then down into primary zone.Oxidation The single Engineering average of band contains Cu 0.06~0.24%, and secondary enrichment band is averaged Cu grade 1% (mined out), primary zone ore body Average grade 0.3~0.4% (2400m or more is mined out).Ore type: superficial part is mainly oxidized ore, a small amount of composite ore Stone, lower part are sulfide ore.The oxide ore of No. 2 ore bodies accounts for 36%, oxygenation efficiency 78.8%;Composite ore oxygenation efficiency 18.4%, vulcanization Mine oxygenation efficiency 4.3%.Oxidized ore is most suitable for in-situ leaching.Area's internal oxidition copper unbalanced-ore is not suitable for conventional selecting smelting exploitation, It is remained untouched reservation.

Wet process iron-smelting copper performance: through secondary mixing nugget dilute sulfuric acid (5.0%H2SO4) pond leaching test, in half a year with 2 grams/ It rises concentration to increase, earth's surface oxide ore easily soaks, leaching rate > 70%.This mine oxidized zone can use dilute sulfuric acid Situ Leaching copper, lower part sulphur The molten leaching of bionic acid need to be used by changing mine.

Cu concentrate grade body scale and resource reserve: local area industry copper mine has been exploited substantially, only remainder outside balance reserves in 2400 meters of deeps below;Constitute that thick big, the big lenticular of strip of component continuous uniform is low together with low copper containing mine mineralization body Cupric mineralization body is the raw material of the present embodiment research.

The industrial copper reserves exploited and the stock number that the spy of detailed survey geologic report obtains estimation are very close.Accordingly, industrial Copper mine and Cu concentrate grade body resource have reached the working level verified.Cu concentrate grade body boundary has exploratory trench to control comprehensively, internal drilled Control, Cu concentrate grade body interior thickness is big, and copper content is slightly higher, and rice percentage is also high, to edge gradually poor, the Cu concentrate grade body of thinning change Rice percentage isogram is as shown in Figure 6.

It is as follows that in-situ leaching Cu concentrate grade resource fixes tentatively industrial index:

Copper cutoff grade > 0.02%;Either simplex journey average grade >=0.06%;Block rice percentage >=6m%;I grade: Block Cu average >=0.15%;II grade: block Cu average 0.15~0.06%;Copper resource total amount >=50000 ton;

According to These parameters, in-situ leaching copper ore resource amount: 102~114 exploration wire lengths 1200 is estimated with parallel cutting surfaces method Rice, has 40 exploratory trenches within the scope of 102~114 exploration lines and 23 drillings control, and 1952, fundamental analysis sample.By grade I grade and II grade of Cu concentrate grade body can be divided with degree of engineering controlling.

As shown in Figure 1, I grade of Cu concentrate grade body is distributed between 104~109 exploration lines, exposure is 500 meters long, there is 100 × 50- 75 meters of spacing Engineering Controls, Cu concentrate grade body interior thickness is larger, and copper content is relatively high, and rice percentage is also high;Gradually to edge It is thinning to become poor, as shown in fig. 6, its scale: it is 500 meters long, it is 126-429 meters wide, 266.5 meters of mean breadth;Distribution area 14.45 Ten thousand square metres, lead thickness 36.26-224.75 meters, 121.91 meters of average thickness of drilling control.Single Engineering average cupric Cu0.06- 0.24%, average grade 0.182%;Average engineering rice percentage 17.87%, wherein the area of rice percentage > 10m% is 89750 square metres, interior Engineering average rice percentage 29.81m%, traverse drill is averaged cupric 0.184%;Copper metal reserves 70987 Ton, the first choice as in-situ leaching raw material.

As shown in Figure 1, II grade of Cu concentrate grade body is distributed between 102-104 line and 109-114 line, mineralization body is 700 meters long, It is 85-325 meters of exposure width, average 202.86 meters wide, it 14.44 ten thousand square metres of area, 29.83-192.71 meters of plummet thickness, puts down It is 97.79 meters, single Engineering average cupric Cu0.06-0.23% thick, average grade 0.119%, and Engineering Control is diluter, is divided into II grade of product.

Estimation result: I grade of 4347.26 ten thousand tons of Cu concentrate grade body ore amount, 79032 tons of copper metal amount, average grade 0.182%.

II grade of 2861.27 ten thousand tons of Cu concentrate grade body ore amount, 33973 tons of copper metal amount, average grade 0.119%.

I grade and II grade of Cu concentrate grade body ore amount it is 7208.53 ten thousand tons total, 113005 tons of copper metal amount, average copper grade 0.157%, reach medium-scale.

I grade of resource is checked with geological blocking: it is 79908 tons that 104~109 lines, which check copper metal amount, than parallel cutting surfaces method More 876 tons, relative error is only 0.11%, and Cu concentrate grade stock number is reliable.

As shown in Figure 2-5, Fig. 2 is the drawing in side sectional elevation of 105 exploration line of mining area of embodiment;Fig. 3 is the mining area of embodiment The drawing in side sectional elevation of 106 exploration lines;Fig. 4 is the drawing in side sectional elevation of 107 exploration line of mining area of embodiment;Fig. 5 is the Cu concentrate grade of embodiment The profilograph of body.

The delineation of mining area available data and estimation Cu concentrate grade body stock number: stock number is not participated in if any following four situation and is estimated It calculates:

(1) many locations do not sample in mineralization body, do not infer mineralization body stock number;

(2) former detailed survey report is in order to reduce grade table length, and deletes the sample of multistage Cu < 0.2%, does not infer resource Amount;

(3) most of drilling construction depth are on 2200 meters of absolute altitudes, and only minority takes 2300 meters of absolute altitude rock cores below Sample, in order to keep the neat of delineation mineralization body bottom circle, there is the data of mineralising grade in deep, as seen in CK1041, attached CK1111 2200 meters of Cu concentrate grades below do not participate in stock number estimation yet;

K115 and K116 takes off the cupric oxide ore to 50 meters of wide > containing Cu 0.2% to the east of (4) 114 lines, because of no deep work Journey does not infer Cu concentrate grade body stock number yet;

(5) 104~109 thread industrial mine sections have worked out Fig. 7 according to Cu grade and actual reserves, calculate the total copper gold of full mine section 133000 tons of category amount, illustrate this in-situ leaching reliable resources.

Above description this in-situ leaching Cu concentrate grade body real resource amount more can will not only be lacked.

192.44 ten thousand tons of ore amount inside and outside table are exploited in the mineralization body of the present embodiment, only low copper containing mineralization body total amount The mineralization body of 2.7%, Shang You 97.3% still keeps native state, shows the mineralization body category in-situ leaching scope of the present embodiment.

This utilizes part rock of the copper sulfide either simplex journey containing Cu >=0.06%, is largely the rock of Cu >=0.1%, and with Based on superficial part copper oxide, 28.9 ten thousand square metres of low copper containing mineralization bodies of in-situ leaching range are drawn a circle to approve, estimate Cu concentrate grade horn stone 72085327 tons, 113005 tons of copper metal amount, average copper grade 0.157%.Local area deep tool ship type water barrier, easy liquid collecting, carefully Net vein shape mineralising horn stone, permeability is moderate, easily soaks, assert that this low copper containing mineralising physical efficiency in-situ leaching adopts copper accordingly.

The in-situ leaching wet type copper smelting operation of the present embodiment includes Situ Leaching copper liquid and ground reservoir-extraction electrodeposition two It is most of.Currently, earth's surface factory extraction-back extraction-electrodeposition technology is mature.The present embodiment only studies in-situ leaching technique.

Preferred location is in the molten leaching earth's surface-superficial part copper oxide of 104~109 exploration line of local area.Using earth's surface spray and Part The Small Well injects 0.5% dilute sulfuric acid and molten ore bacterium liquid leaches copper, the tunnel liquid collecting near existing phreatic surface, and leaching solution contains 1 grams per liter of Cu >, pumps earth's surface, and with organic phase (such as L1X984 or domestic N-901 and new product), routinely technique is extracted, extraction Rate 70%, with the commercially available concentrated sulfuric acid, routinely technique is stripped, 0.08 grams per liter of raffinate < containing Cu, 40 grams per liter of copper-rich liquid > containing Cu, Power transmission accumulates I grade of tough cathode of Workshop Production.

The mineralization body cupric oxide ore originates in the earth's surface in synclinal structure core portion to superficial part, and axial N50 ° of E slopes inwardly, 20~40 ° of inclination angle, this section of mineralization body rice percentage > 10m% is 500 meters long, 111~228 meters wide, 30~80 meters of vertical thickness, puts down Equal rice percentage > 22.54m%, oxygenation efficiency 78%, readily soluble leaching, easy liquid collecting.

It is as follows that molten technique is soaked in the original place of the present embodiment:

(1) as shown in figure 8, it is molten with the 0.5% dilute sulfuric acid ore leaching bacteria for being ready for use on copper in dissolution ore with liquid pool using ground Liquid, the present embodiment can be Thiobacillus ferrooxidans or Thiobacillus thioxidans;Thiobacillus ferrooxidant concentration >=104A/ml.

(2) above-mentioned solution is injected in ore body by static injection, solution is reacted with copper mineral, makes copper with copper sulphate shape Formula enters solution.

(3) producing well or liquid collecting lane are suitable for forming low pressure receiver slot, collect copper-containing solution and pump earth's surface factory, raw It produces well or liquid collecting lane is located near phreatic surface between 106-107 line.

(4) through domestic N-901 routinely technique purification by liquid extraction, with the commercially available concentrated sulfuric acid, routinely technique is stripped leachate, rich Copper sulphate electrodeposition tough cathode, finally obtaining tough cathode products C u content is 99.95%.Wherein, raffinate recycling addition bacterium solution, Continue to use as leachant after adjusting acidity, the organic phase after back extraction, which recycles, is used as extractant continuation extracting Cu, after electrodeposition Devil liquor recovery used as strippant.

Leaching solution returns to leaching after supplemental acid bacterium and uses.Liquid collecting should be noted that, containing copper concentration, solution is answered before not up to requiring Circulation injection ore body again generally requires copper content to be greater than 1 grams per liter until the copper in solution reaches concentration to be recycled. It should flexibly be used in length of run, advantageously reduce production cost.

Copper sulfide in the present embodiment, in also molten leaching 104-109 exploration line underground low copper containing mineralization body.Through designing and constructing Good suction eye after liquid injection hole and production bore, evacuates the intracorporal underground water of molten leaching mineralising to form low-pressure area, through injection hole static state Cultured anaerobic bacteria adaptable, work efficiency is high is added, the copper-sulphide ores under the anaerobic environment of deep is suitble to leach copper, solution Copper through fine-structure mesh vein fissure infiltration dissolution in it, orientation import low-pressure area, extract lysate out by production bore, cupric up to 1.5 grams/ It rises and send abstraction pool L1X984 routinely technique extraction, be stripped with the commercially available concentrated sulfuric acid, 0.08 grams per liter of raffinate < containing Cu, recycling Rate 70%, 40 grams per liter of copper-rich liquid > containing Cu, power transmission product I grade of tough cathode of Workshop Production.

Five drilling control area 14700ms of the low copper containing mineralization body first choice centered on CK10662Range, molten leaching Thickness 80m sprays 100m3/ day soaks mine agent, molten mine bacteria concentration 104A/ml is gradually expanded to 104~109 exploration line rice percentages The Cu concentrate grade body of rate > 10m%, 46.71-224.75 meters of block thickness, majority leaching journey is greater than 150 meters, is considered as prolonged The molten leaching of anaerobism bacterium solution, immersion liquid cupric are up to 1.5 grams per liters or more, earth's surface factory are extracted out by production bore, through extraction-back extraction-electricity I grade of copper of product.

The present embodiment is in situ on the basis of the low Cu concentrate grade body of molten leaching, as shown in Figure 1, from the 115 of Cu concentrate grade body periphery~ The off-balancesheet cupric oxide ore and low content Cu concentrate grade body that 116 line earth's surfaces and 3 line east northeast section exploratory trenches are taken off, can adopt the copper of kiloton or more Content is transported in the cheuch of first fief section and sprays up to 0.2% horn stone body.

Liquid collecting tunnel, 2 grams per liter of leaching solution cupric >, extraction-back extraction-electrodeposition cathode are imported after 30~50 meters of molten leachings Copper.Make full use of the fragmentary Cu concentrate grade resource near mining area.

Low Cu concentrate grade body is molten soaked I grade of Cu concentrate grade body after, be transferred to II grade of Cu concentrate grade body of molten leaching, when produce per year tough cathode reach 1000 ton hours, can be continuous molten leaching 50 years or more.

Title of the invention, the basic principles and main features of invention and advantages of the present invention has been shown and described above. It should be understood by those skilled in the art that: the present invention is not limited to the above embodiments, describes in above embodiments and description Merely illustrate the principles of the invention, without departing from the spirit and scope of the present invention, the present invention also has various change And improvement, all of these changes and modifications fall within the claimed invention.The claimed scope of the invention is by appended right Claim and its equivalent thereof.

Claims (4)

1. a kind of production method based on in-situ leaching low copper containing mineralization body electro deposited copper, it is characterised in that: the low copper containing mineralising Body is cupric fine-structure mesh arteries and veins, thready pulse disseminated horn stone and the mineralising granite porphyry ivernite arteries and veins that sandstone is formed through hydrothermal alteration;It should Method includes the following steps:
The determination of step (1), the preferred section in mining area
The mining area with in-situ leaching mining condition is selected, I grade of Cu concentrate grade body is distributed between the exploration line in middle section, and continuous 12 A drilling percentage containing rice 10-55.08m%, area 89750m2, average copper grade 0.184%;It include continuous five in it Drill control area 14700m2Superficial part in range has the mineralization body based on copper oxide, the readily soluble copper of average copper grade 0.201%, Part earth's surface spray, processing 30 × 30m spacing shallow bore hole, preferential development, then according to the actual situation, gradually planned expansion To the range of rice percentage > 10m%;
Step (2) prepares molten mine liquid, produces tough cathode
Prepare molten mine liquid:
With the dilute sulfuric acid that mass percent is 0.5% is added in liquid pool, cultured Thiobacillus ferrooxidans or oxygen is then added Change the dilute sulfuric acid bacterium solution or anaerobic bacteria that sulphur Thiobacillus obtains;Wherein, thiobacillus ferrooxidant concentration >=104A/ml;
Produce tough cathode:
Dilute sulfuric acid bacterium solution is sprayed in earth's surface to the Cu concentrate grade body of superficial part copper oxide, it is former in conjunction with superficial part 30 × 30m shallow bore hole static state fluid injection The directly molten leaching copper oxide in ground;Hollow place liquid collecting when more than 1 grams per liter of leaching solution cupric, extracts earth's surface out, is sent into collecting tank, then by collecting Liquid pool is sent into abstraction pool, and back extraction pond is sent into organic extractant phase leaching solution, after load organic phases, is stripped with the concentrated sulfuric acid, so that extraction Extraction raffinate cupric is lower than 0.08 grams per liter, more than 40 grams per liter of copper-rich liquid cupric, then by copper-rich liquid power transmission product workshop, produces cathode Copper, raffinate, which returns to adjust acidity with liquid pool and supplement biological bacteria, to be continued to use as molten mine liquid;
Molten leaching area is extended to the 89750m of cupric rice percentage > 10m%2In range, for the low copper containing under the anaerobic environment of deep Copper sulfide in mineralization body after suction eye of having constructed, liquid injection hole and production bore, passes through suction eye and extracts Groundwater formation low pressure out Area, then the anaerobic bacteria prepared by liquid injection hole static injection, solution dissolve the copper in it through the infiltration of fine-structure mesh vein fissure, and orientation imports low Pressure area extracts lysate out by production bore, transports the extraction of earth's surface factory, back extraction production electro deposited copper.
2. production method according to claim 1, it is characterised in that: the low copper containing mineralization body is located at the 4th section of group on the sunny side Stratum O1 x 4-2
3. production method according to claim 1, it is characterised in that: the low copper containing mineralization body is located at secondary synclinal structure Core portion, secondary synclinal structure core portion are in large-scale strip " V " the type lenticular body being generally corresponding to, and axial 50~70 ° of east northeast is about 2000 meters, both wings are lean-in, 20~40 ° of inclination angle, mineralization body bottom tool ship type ivernite water barrier, and 10-65 meters of thickness.
4. production method according to claim 1, it is characterised in that: in step (2), spray 100m3/ day dilute sulfuric acid bacterium solution In in the Cu concentrate grade body of earth's surface to superficial part copper oxide, in conjunction with superficial part 30 × 30m shallow bore hole static state fluid injection, the directly molten leaching in original place is aoxidized Copper, the molten remaining copper sulfide of leaching of biological bacteria, with CuSO4Form enter leaching solution, the migration of low-pressure area near phreatic surface, Through tunnel liquid collecting, earth's surface plant produced electro deposited copper is pumped.
CN201810872930.4A 2018-08-02 2018-08-02 A method of electro deposited copper is produced based on in-situ leaching low copper containing mineralization body CN108950201B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810872930.4A CN108950201B (en) 2018-08-02 2018-08-02 A method of electro deposited copper is produced based on in-situ leaching low copper containing mineralization body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810872930.4A CN108950201B (en) 2018-08-02 2018-08-02 A method of electro deposited copper is produced based on in-situ leaching low copper containing mineralization body

Publications (2)

Publication Number Publication Date
CN108950201A CN108950201A (en) 2018-12-07
CN108950201B true CN108950201B (en) 2019-10-15

Family

ID=64467257

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810872930.4A CN108950201B (en) 2018-08-02 2018-08-02 A method of electro deposited copper is produced based on in-situ leaching low copper containing mineralization body

Country Status (1)

Country Link
CN (1) CN108950201B (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1869198A (en) * 2004-10-22 2006-11-29 拜奥希格马公司 Bacterial strain for leaching out ore or clean ore comprising metallic sulfide ore component and leaching method thereof
CN101158285A (en) * 2007-11-27 2008-04-09 北京矿冶研究总院 Underground mining methods of copper mine
WO2015075502A1 (en) * 2013-11-20 2015-05-28 Biosigma S.A. Bacterial strain, cutipay, isolated from the sulfobacillus thermosulfidooxidans species, bacterial inoculum comprising same, and method for the bioleaching of minerals where said bacterial inoculum is inoculated
CN104694746A (en) * 2015-03-25 2015-06-10 江西理工大学 Ion-adsorption-type rare earth in-situ leaching method and leaching system thereof
CN106507828B (en) * 1999-12-22 2017-03-15 核工业北京化工冶金研究院 The method of ground-dipping uranium extraction

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106507828B (en) * 1999-12-22 2017-03-15 核工业北京化工冶金研究院 The method of ground-dipping uranium extraction
CN1869198A (en) * 2004-10-22 2006-11-29 拜奥希格马公司 Bacterial strain for leaching out ore or clean ore comprising metallic sulfide ore component and leaching method thereof
CN101158285A (en) * 2007-11-27 2008-04-09 北京矿冶研究总院 Underground mining methods of copper mine
WO2015075502A1 (en) * 2013-11-20 2015-05-28 Biosigma S.A. Bacterial strain, cutipay, isolated from the sulfobacillus thermosulfidooxidans species, bacterial inoculum comprising same, and method for the bioleaching of minerals where said bacterial inoculum is inoculated
CN104694746A (en) * 2015-03-25 2015-06-10 江西理工大学 Ion-adsorption-type rare earth in-situ leaching method and leaching system thereof

Also Published As

Publication number Publication date
CN108950201A (en) 2018-12-07

Similar Documents

Publication Publication Date Title
Morin et al. Environmental geochemistry of minesite drainage: Practical theory and case studies, Digital Edition
O'Brien Prehistoric copper mining in Europe: 5500-500 BC
RU2600229C2 (en) Method of development of water-bearing deposit of ironstone ores of oolitic structure
Ilankoon et al. The current state and future directions of percolation leaching in the Chinese mining industry: Challenges and opportunities
Lindgren The copper deposits of the Clifton-Morenci district, Arizona
Evans An introduction to economic geology and its environmental impact
Seredkin et al. In situ recovery, an alternative to conventional methods of mining: exploration, resource estimation, environmental issues, project evaluation and economics
Pardee et al. Metalliferous deposits of the greater Helena mining region, Montana
Weed Geology and ore deposits of the Butte district, Montana
CN104531988B (en) A kind of recovery process of difficult complex multi-metal ore deposit
Schnell Bioleaching of copper
CN108335223A (en) A kind of sandstone-type uranium mineralization with respect Comprehensive Assessment Technology method
Jaireth et al. Association of large sandstone uranium deposits with hydrocarbons
RU2594912C2 (en) Method for development of deep water-flooded deposit of oolitic waste of ironstone ores
CN104785357B (en) The method that valuable metal is extracted from seabed multi-metal sulfide coupling grandidierite
Laznicka Giant metallic deposits—a century of progress
Lydon Geology and metallogeny of the Belt-Purcell Basin
Bornhorst et al. Copper deposits of the western Upper Peninsula of Michigan
Wolfe Mineral Resources a World Review
Spencer et al. The Juneau Gold Belt, Alaska: A Reconnaissance of Admiralty Island, Alalska
Craig et al. Gold production history of the United States
Raymond Statistics of Mines and Mining
Heyl et al. Oxidized zinc deposits of the United States
CN1734055A (en) Sill-free sublevel caving method with drift space greater than sublevel height
Kyung-soo The mining industry of North Korea

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant