CN103100481A - Separation method for natural copper ore with high mud content - Google Patents
Separation method for natural copper ore with high mud content Download PDFInfo
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- CN103100481A CN103100481A CN2013100211900A CN201310021190A CN103100481A CN 103100481 A CN103100481 A CN 103100481A CN 2013100211900 A CN2013100211900 A CN 2013100211900A CN 201310021190 A CN201310021190 A CN 201310021190A CN 103100481 A CN103100481 A CN 103100481A
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Abstract
The invention discloses a separation method for natural copper ore with high mud content. The method includes the following steps: A, conducting two-stage sieving after raw ores are ground, wherein the ground raw ores with a particle diameter bigger than the particle diameter high value adopt step B, the ground raw ores with a particle diameter smaller than the particle diameter low value adopt step D, and the ground raw ores with a particle diameter between the particle diameter high value and the particle diameter low value adopt step C; B, selecting waste ore by hands, and repeating step A and fine grinding the raw ores; C, grinding the ores, classifying slurry and ore sand in a spiral mode, slurry flotation and the ore sand are returned to be ground, flotation selection comprises first grade roughing and third grade scavenging, ore concentrates after flotation are sent to be processed by step E, tailings after flotation are sent to tailing storage; D, obtaining the slurry and riffling through spiral classification, the riffling is sent back to step C, floating the riffling obtained from concentrated slurry, the flotation selection comprises the first grade roughing, second grade fine selection and the third grade scavenging, copper ores after flotation are sent to be processed by step E, and final tailings after the flotation are sent to the tailing storage; E, concentrating ore concentrates to obtain copper concentrates after pressing and filtering. The separation method for the natural copper ore with the high mud content is high in recovery rate and copper concentrate grade.
Description
Technical field
The invention belongs to copper mine sorting technology field, relate to a kind of high mud nature copper mine method for separating that contains.
Background technology
Mine, zigzag gulf is that the present world only has two or three with the simple substance state, deposit mutually the cupric sandrock-type deposition copper mine of formation for the continental river lacustrine delta, belong to the native copper ore, ore bed compact structure, more stable and stronger, but country rock is red argillaceous siltstoue, hardness is low, immersion easily is broken into mud, poor stability, and institute's yield ores clay content is up to arriving 15-20%.As shown in Figure 1, existing conventional flotation technique adopts two sections closed circuit crushings, one section closed circuit grinding, and a flotation, its floatation indicators is not high, and the actual recovered rate can only reach 85%, and concentrate grade can only reach 25%.Existing ore-dressing technique is: the native copper ore is delivered to vibratory sieve and is sieved after the jaw crusher primary crushing.Product under compass screen surface (less than 16 millimeters)) enter fine ore storage, then carry out one section closed ore grinding, a floatation system processing at main building.And on sieve, large scale ore (greater than 16 millimeters) the garden conic crusher of entering carries out the bolting that turns back to again in small, broken bits, closed circulation.
The native copper ore that conventional flotation technique is large and inhomogeneous to clay content, operation easier is large, and index rises and falls large.The actual recovered rate is the highest can only reach 85%, differs larger from anticipation value (93%), and metal loss is serious.Cu Concentrate Grade only has 25%, does not reach GB primes (30%), and selling price does not increase.
Summary of the invention
The technical problem to be solved in the present invention is, the defective that in processing for copper mine in prior art, the rate of recovery is low, Cu Concentrate Grade is low provides the height that a kind of rate of recovery is high, Cu Concentrate Grade is high to contain mud nature copper mine method for separating.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high mud nature copper mine method for separating that contains comprises the following steps:
A, raw ore is carried out coarse crushing, carry out the two-stage screening according to the high value of the particle diameter of setting and particle diameter low value, raw ore is separated into three parts, particle diameter enters step B processing greater than the raw ore of particle diameter high value after screening; Particle diameter is the mud ore deposit less than the particle diameter low value, and the mud ore deposit enters step D and processes after screening; Particle diameter is in the placer that is between particle diameter low value and the high value of particle diameter, and placer enters step C and processes after screening;
B, for the raw ore of particle diameter greater than the high value of particle diameter, isolate barren rock by picking, return to steps A after the raw ore after the hand inspection is separated is in small, broken bits and carry out the two-stage screening, barren rock is discarded;
C, be in placer between the high value of particle diameter low value and particle diameter for particle diameter, first carry out the ore grinding processing, sludge and the ore in sand form told by screw classifying again after ore grinding; Described sludge carries out flotation, and described ore in sand form returns to ore grinding and processes; Described flotation comprise one-level roughly select, three grades scan, the concentrate product that flotation obtains enters step e and processes, the mine tailing of flotation enters Tailings Dam;
D, particle diameter process through screw classifying less than the mud ore deposit of particle diameter low value and obtain sludge and sand setting, sand setting returns to the Grinding procedure that enters step C and processes, at first the sludge of screw classifying overflow concentrates and obtains sand setting, this sand setting carries out flotation, flotation adopts one-level to roughly select, secondary is selected, three grades scan, flotation obtains the concentrate product and enters the step e processing, and the true tailings of flotation enters Tailings Dam; Concentrated overflow product enters Tailings Dam;
E, the concentrate product that step C, D are obtained carry out concentration, and press filtration obtains copper concentrate.
Described height contains in mud nature copper mine method for separating, and in described steps A, the high value of preferred described particle diameter is 16 * 30mm, and described particle diameter low value is 6 * 20mm.
Described height contains in mud nature copper mine method for separating, and in described steps A, preferred described secondary screening adopts double-deck screen shale shaker to sieve processing, and the screen-aperture of upper strata vibratory sieve is 16 * 30mm, and the screen-aperture of lower floor's vibratory sieve is 6 * 20mm.
Described height contains in mud nature copper mine method for separating, and in the screw classifying of described step C, preferable separate goes out particle diameter at the sludge that accounts for 60% below 0.074 millimeter, and all the other particle diameters return to the continuation ore grinding greater than the ore in sand form of 0.074 millimeter.
Described height contains in mud nature copper mine method for separating, and in the flotation of described step C, preferred described roughly selecting obtains the concentrate product and roughly select chats, and described concentrate product enters step e and processes, and the described chats of roughly selecting enters and scans processing; Scan for three grades and obtain scanning chats and mine tailing, one-level is scanned scans chats and returns and roughly select, two or three grades of every grades of scanning scan obtain scan chats then level return again and scan, every grade of mine tailing of scanning enters subordinate and scans; The true tailings that the third level is scanned enters Tailings Dam.
Described height contains in mud nature copper mine method for separating, in the flotation of described step D, preferably roughly selects to separate and obtains roughly selecting concentrate and roughly select chats, describedly roughly selects concentrate to carry out secondary selected, and the described chats of roughly selecting carries out three grades and scans.
Described height contains in mud nature copper mine method for separating, in the flotation of described step D, preferred selected selected selected concentrate and the selected chats isolated of the first order of secondary, wherein selected chats returns to roughly select again and processes, and it is selected that the selected selected concentrate that obtains of the first order carries out the second level; The second level is selected to be obtained selected concentrate and enters step e and process, and the selected isolated selected chats in the second level returns to that the first order is selected to be processed again.
Described height contains in mud nature copper mine method for separating, in the flotation of described step D, preferred three grades of first order in scanning are scanned and are separated and obtain that the first order is scanned chats and the first order is scanned mine tailing roughly selecting chats, wherein the first order is scanned chats and is entered the selected processing of the first order, and the first order is scanned mine tailing and entered the second level and scan processing; The second level is scanned and is separated to such an extent that scan chats to the second level and mine tailing is scanned in the second level, and the second level is scanned mine tailing and entered the third level and scan processing, and the second level is scanned chats and returned to the first order and scan processing; The third level is scanned to separate and obtains that the third level is scanned chats and the third level is scanned mine tailing, and the third level is scanned chats and returns to the second level and scan processing, and the third level is scanned mine tailing and enters Tailings Dam.
Described height contains in mud nature copper mine method for separating, preferred in described step C, D, the flotation agent that flotation is adopted is that sodium n-butyl xanthate, foaming agent are terpenic oil, and described sodium n-butyl xanthate addition is to add 150-350g in raw ore per ton, and the addition of terpenic oil is to add 50-100g in raw ore per ton.
The present invention is according to the large characteristics of native copper ore clay content, the screening of employing two-stage, the ore particle diameter that the granularity that in pulverizing, clay content is high is less, clay content is low is larger, sieves by two-stage, can be fast the ore of pulverizing be separated, can also be as far as possible the mud ore deposit be separated.Namely preset the high value of particle diameter and particle diameter low value, value high according to particle diameter and particle diameter low value in secondary sieves with placer, mud ore deposit according to different three parts that are separated into of particle diameter, higher than also containing a lot of barren rocks except ore in the raw ore of particle diameter high value, need sort; Higher lower than clay content in the mud ore deposit of particle diameter low value, the placer clay content that is between the high value of particle diameter and particle diameter low value is lower, therefore the different processing mode of this three parts employing is processed.After sorting out barren rock in raw ore higher than the high value of particle diameter, ore is dropped into processing more again; Particle diameter is less than the mud ore deposit of particle diameter low value, at first adopts classification, concentrated mode, a large amount of mud in the mud ore deposit disposed, then sand setting is carried out flotation; And first carry out ore grinding, carry out flotation again greater than the placer of particle diameter low value, then with placer and mud ore deposit respectively flotation obtain the concentrate product and mix and concentrate and the press filtration processing, just obtained high-grade copper concentrate.To sum up, at first method of the present invention separates placer, mud ore deposit, more respectively placer, Ni Kuang is carried out flotation and process, and is independent of each other mutually, thereby improves the overall rate of recovery, and actual recovered rate of the present invention reaches 93%, and concentrate grade reaches 35%, has surpassed the GB primes.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in accompanying drawing:
Fig. 1 is the flow chart of prior art;
Fig. 2 is the flow chart of the embodiment of the present invention.
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast accompanying drawing and describe the specific embodiment of the present invention in detail.
As shown in Figure 2, a kind of high mud nature copper mine method for separating that contains comprises the following steps:
Then the raw ore of A, native copper ore carries out the two-stage screening according to the high value of the particle diameter of setting and particle diameter low value through the jaw crusher coarse crushing.The high value of particle diameter and particle diameter low value are the standards for separating of ore, can determine according to indexs such as ore clay content, percentages of damage, the present embodiment is definite mainly for the actual conditions of the natural copper mine in mine, zigzag gulf, and the high value of preferable particle size is 16 * 30mm, and described particle diameter low value is 6 * 20mm.
Double-deck screen shale shaker is adopted in described secondary screening, and the screen-aperture of upper strata vibratory sieve is 16 * 30mm, and the screen-aperture of lower floor's vibratory sieve is 6 * 20mm.The raw ore of coarse crushing is placed in vibratory sieve, isolates the raw ore of three kinds of different-grain diameters, the particle diameter on the vibratory sieve of upper strata enters step B processing greater than the raw ore of 16 * 30mm after screening; Particle diameter under the vibratory sieve of upper strata, on lower floor's vibratory sieve is placer less than 16 * 30mm and greater than the ore of 6 * 20mm, and placer enters step C and processes after screening; Particle diameter is the mud ore deposit less than the ore of 6 * 20mm, and the mud ore deposit enters step D and processes after screening.
B, for the raw ore of particle diameter greater than the high value of particle diameter, by picking, the raw ore of particle diameter greater than 16 * 30mm sorted, isolate barren rock and ore, the raw ore that sorts out enters the garden conic crusher and carries out in small, broken bits, the vibratory sieve that turns back to again in steps A carries out the secondary screening, closed circulation always, and the barren rock that sorts out is discarded;
C, with particle diameter less than 16 * 30mm and greater than the placer of 6 * 20mm, merge and enter fine ore storage, then carry out one section closed ore grinding at main building, ore grinding adopts ball mill, the ore pulp that obtains after ore grinding is by screw classifying, the sludge of telling and ore in sand form; Described sludge then carries out flotation, and the ore in sand form of classification returns to ball mill and placer merges the continuation ore grinding.
In screw classifying, preferable separate goes out particle diameter at the sludge that accounts for 60% below 0.074 millimeter, all the other particle diameters return to the continuation ore grinding greater than the ore in sand form of 0.074 millimeter, to carry out monomer separation to Copper Ores as far as possible in the present invention in screw classifying, after ore grinding, ore grain size when 0.074 millimeter (being commonly called as 200 orders), has been realized monomer separation substantially.
Add flotation agent in the ore pulp of ore grinding, foaming agent carries out flotation.The flotation agent that flotation is adopted is that sodium n-butyl xanthate, foaming agent are terpenic oil, and described sodium n-butyl xanthate addition is to add 150-250g in raw ore per ton, and the addition of terpenic oil is to add 50-100g in raw ore per ton.Flotation agent and and the addition of foaming agent specifically carry out practical operation according to head grade and character and determine.
Described flotation comprise one-level roughly select, three grades scan.Wherein, one-level is roughly selected and is obtained the concentrate product and roughly select chats, and described concentrate product enters step e and processes, and the described chats of roughly selecting enters and scans processing; Scan for three grades and obtain scanning chats and mine tailing, one-level is scanned scans chats and returns and roughly select processing, two, three grades scan every grade scan obtain scan chats then level return again to upper level and scan, be that secondary is scanned chats and returned to one-level and again scan, three grades of chats of scanning of scanning return to secondary and again scan.Every grade of mine tailing of scanning enters subordinate and scans; The true tailings that the third level is scanned enters Tailings Dam.
D, footpath process through screw classifying less than the mud ore deposit of 6 * 20mm and obtain sludge and sand setting, sand setting returns to the Grinding procedure that enters step C and processes, at first the sludge of screw classifying overflow concentrates, and obtains sand setting and overflow product after concentrating and separating, and described sand setting carries out flotation.Flotation adopts one-level to roughly select, secondary is selected, three grades scan; The flotation agent that flotation is adopted is that sodium n-butyl xanthate, foaming agent are terpenic oil, and described sodium n-butyl xanthate addition is to add 250-350g in raw ore per ton, and the addition of terpenic oil is to add 50-100g in raw ore per ton.Concentrated overflow product enters Tailings Dam.
In described flotation, roughly select to separate and obtain roughly selecting concentrate and to roughly select chats, describedly roughly select concentrate to carry out secondary selected, the described chats of roughly selecting carries out three grades and scans.
In described flotation, selected selected concentrate and the selected chats isolated of the first order that secondary is selected, wherein selected chats returns to roughly select again and processes, and it is selected that the selected selected concentrate that obtains of the first order carries out the second level; The second level is selected to be obtained selected concentrate and enters step e and process, and the selected isolated selected chats in the second level returns to that the first order is selected to be processed again.
In described flotation, preferred three grades of first order in scanning are scanned and are separated and obtain that the first order is scanned chats and the first order is scanned mine tailing roughly selecting chats, and wherein the first order is scanned chats and entered the selected processing of the first order, and the first order is scanned mine tailing and entered the second level and scan processing; The second level is scanned and is separated to such an extent that scan chats to the second level and mine tailing is scanned in the second level, and the second level is scanned mine tailing and entered the third level and scan processing, and the second level is scanned chats and returned to the first order and scan processing; The third level is scanned to separate and obtains that the third level is scanned chats and the third level is scanned mine tailing, and the third level is scanned chats and returns to the second level and scan processing, and the third level is scanned mine tailing and enters Tailings Dam.
E, the concentrate product that step C, D are obtained carry out concentration, and press filtration obtains copper concentrate.
Wherein concentrated is to adopt thickening pond, and just the concentrate product that obtains of step C, D is transported in thickening pond concentratedly by pipeline, enters filter press after concentrated and carries out press filtration, obtains at last copper concentrate.Overflow water concentrated and that press filtration produces is sent back to recycling by pipeline.
The enforcement of press filtration and press filtration condition are according to deciding by the thickening pond daily handling ability.
Claims (9)
1. one kind high contains mud nature copper mine method for separating, it is characterized in that, comprises the following steps:
A, raw ore is carried out coarse crushing, carry out the two-stage screening according to the high value of the particle diameter of setting and particle diameter low value, raw ore is separated into three parts, particle diameter enters step B processing greater than the raw ore of particle diameter high value after screening; Particle diameter is the mud ore deposit less than the particle diameter low value, and the mud ore deposit enters step D and processes after screening; Particle diameter is in the placer that is between particle diameter low value and the high value of particle diameter, and placer enters step C and processes after screening;
B, for the raw ore of particle diameter greater than the high value of particle diameter, isolate barren rock by picking, return to steps A after the raw ore after the hand inspection is separated is in small, broken bits and carry out the two-stage screening, barren rock is discarded;
C, be in placer between the high value of particle diameter low value and particle diameter for particle diameter, first carry out the ore grinding processing, sludge and the ore in sand form told by screw classifying again after ore grinding; Described sludge carries out flotation, and described ore in sand form returns to ore grinding and processes; Described flotation comprise one-level roughly select, three grades scan, the concentrate product that flotation obtains enters step e and processes, the mine tailing of flotation enters Tailings Dam;
D, particle diameter process through screw classifying less than the mud ore deposit of particle diameter low value and obtain sludge and sand setting, sand setting returns to the Grinding procedure that enters step C and processes, at first the sludge of screw classifying overflow concentrates and obtains sand setting, this sand setting carries out flotation, flotation adopts one-level to roughly select, secondary is selected, three grades scan, flotation obtains the concentrate product and enters the step e processing, and the true tailings of flotation enters Tailings Dam; Concentrated overflow product enters Tailings Dam;
E, the concentrate product that step C, D are obtained carry out concentration, and press filtration obtains copper concentrate.
2. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in described steps A, the high value of described particle diameter is 16 * 30mm, and described particle diameter low value is 6 * 20mm.
3. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in described steps A, described secondary screening adopts double-deck screen shale shaker to sieve processing, the screen-aperture of upper strata vibratory sieve is 16 * 30mm, and the screen-aperture of lower floor's vibratory sieve is 6 * 20mm.
4. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in the screw classifying of described step C, isolate particle diameter at the sludge that accounts for 60% below 0.074 millimeter, all the other particle diameters return to the continuation ore grinding greater than the ore in sand form of 0.074 millimeter.
5. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in the flotation of described step C, described roughly selecting obtains the concentrate product and roughly select chats, and described concentrate product enters step e and processes, and the described chats of roughly selecting enters and scans processing; Scan for three grades and obtain scanning chats and mine tailing, one-level is scanned scans chats and returns and roughly select, two, three grades of every grades of scanning scan obtain scan chats then level return again and scan, every grade of mine tailing of scanning enters subordinate and scans; The true tailings that the third level is scanned enters Tailings Dam.
6. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in the flotation of described step D, roughly selects to separate and obtains roughly selecting concentrate and roughly select chats, describedly roughly selects concentrate to carry out secondary selected, and the described chats of roughly selecting carries out three grades and scans.
7. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in the flotation of described step D, selected selected concentrate and the selected chats isolated of the first order that secondary is selected, wherein selected chats returns to roughly select again and processes, and it is selected that the selected selected concentrate that obtains of the first order carries out the second level; The selected concentrate product that obtains in the second level enters the step e processing, and the selected isolated selected chats in the second level returns to the selected processing again of the first order.
8. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in the flotation of described step D, three grades of first order in scanning are scanned and are separated and obtain that the first order is scanned chats and the first order is scanned mine tailing roughly selecting chats, wherein the first order is scanned chats and is entered the selected processing of the first order, and the first order is scanned mine tailing and entered the second level and scan processing;
The second level is scanned to separate and is selected to such an extent that scan chats to the second level and mine tailing is scanned in the second level, and the second level is scanned mine tailing and entered the third level and scan processing, and the second level is scanned chats and returned to the first order and scan processing;
The third level is scanned and separates that the third level obtain is scanned chats and the third level is scanned mine tailing, and the third level is scanned chats and returns to the second level and scan processing, and the third level is scanned mine tailing and enters Tailings Dam.
9. height according to claim 1 contains mud nature copper mine method for separating, it is characterized in that, in described step C, D, the flotation agent that flotation is adopted is that sodium n-butyl xanthate, foaming agent are terpenic oil, described sodium n-butyl xanthate addition is to add 150-350g in raw ore per ton, and the addition of terpenic oil is to add 50-100g in raw ore per ton.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104941781A (en) * | 2015-06-30 | 2015-09-30 | 广西华锡集团股份有限公司车河选矿厂 | Grading method for polymetallic ores |
| CN106170343A (en) * | 2013-11-26 | 2016-11-30 | 华北理工大学 | The ore-dressing technique of a kind of chalcopyrite and method |
| CN112122010A (en) * | 2020-09-18 | 2020-12-25 | 玉溪矿业有限公司 | Mineral separation process of fine particle-containing pyrite copper sulfide ore |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106170343A (en) * | 2013-11-26 | 2016-11-30 | 华北理工大学 | The ore-dressing technique of a kind of chalcopyrite and method |
| CN106170343B (en) * | 2013-11-26 | 2017-10-17 | 华北理工大学 | A kind of beneficiation method of chalcopyrite |
| CN104941781A (en) * | 2015-06-30 | 2015-09-30 | 广西华锡集团股份有限公司车河选矿厂 | Grading method for polymetallic ores |
| CN112122010A (en) * | 2020-09-18 | 2020-12-25 | 玉溪矿业有限公司 | Mineral separation process of fine particle-containing pyrite copper sulfide ore |
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