CN1147365C - Copper-sulfur separating process without lime - Google Patents
Copper-sulfur separating process without limeInfo
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- CN1147365C CN1147365C CNB011175095A CN01117509A CN1147365C CN 1147365 C CN1147365 C CN 1147365C CN B011175095 A CNB011175095 A CN B011175095A CN 01117509 A CN01117509 A CN 01117509A CN 1147365 C CN1147365 C CN 1147365C
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- copper
- lime
- sulfur
- sulphur content
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Abstract
The present invention discloses a process for separating copper and sulfur without lime, which is characterized in that a composite inhibitor is utilized. The composite inhibitor comprises X Ca (OCl) 2 Y CaCl2 Z H2O or A Ca (OCl) 2 B CaCl2 C Ca (OH) 2 2H2O, wherein X ranges from 1 to 49, Y ranges from 1 to 49, and Z ranges from 2 to 98; A ranges from 3 to 97, 5B ranges from 0 to 32, and 5C ranges from 2 to 65. The composite inhibitor is added in an ore paste stirring tank before copper is separated from sulfur, and 150 to 300g of the composite inhibitor is added to one ton of raw ore; then, copper is separated from sulfur according to a conventional copper-sulfur separation procedures. The preparation used in the present invention completely replaces all lime added in the process of separating copper from sulfur in the existing mine. Therefore, the grade of copper concentrate and a recovery rate of copper are improved, and a recovery rate of other valuable ingredients accompanied with copper and sulfur, such as gold, silver, molybdenum, bismuth, etc., is greatly improved.
Description
Technical field
The invention discloses a kind of copper-sulfur separating process without lime, belong to the Mineral Engineering field.
Background technology
At present external sulphide ore selects factory, no matter adopt which kind of technological process to produce, at copper sulphur content in operation, (as the Dexing copper mine is 9-11 kilogram/ton raw ore all to adopt a large amount of interpolation lime, all mouthful of plumbous zinc is 11-15 kilogram/ton raw ore), improve the medium pH value and reach more than 12, in strongly basic medium, press down the floating copper of sulphur.Mine tailing behind acquisition copper concentrate, the floating copper adds acid or acid water activation again, floating again sulfur mineral.This explained hereafter is with a long history, and technical maturity can obtain the stable copper that selects and refer to the border.But the shortcoming of following this technology also is a lot, mainly contains: 1. difficulty is added in the use of lime.Because must make breast before lime adds, therefore special comprehensive workshop section has all been set up in corresponding mine for this reason, manage lime system breast and add matters, often poor owing to lime quality, dregs are a lot, add to lime system breast and bring very big difficulty.2. influence copper concentrate well quality, make the copper concentrate grade be difficult to the load height.Because the lime addition is big, pH value is too high, makes flotation froth be clamminess, and it is serious to carry sludge secretly, therefore causes the copper concentrate grade to be difficult to improve.3. have a strong impact on effective recovery of association useful constituent.Because the interpolation large quantities of lime, the reason that pH value is too high when effectively suppressing iron sulfide mineral, also has the gold, silver of a great deal of association, copper, molybdenum, cobalt etc. component such as valency to restrain, so had a strong impact on the rate of recovery of this this association useful constituent.4. a large amount of uses of lime cause pipeline, equipment knot calcium, corrode, and influence the service life of equipment.5. efflux wastewater pH value height, environmental pollution is serious.In the huge mine of lime consumption, the lime problem has become the principal element of development of restriction mine and economic benefit.With the Dexing copper mine is example, about general lime consumption 9-11 kilogram/ton ore deposit, calculates with 9 kilograms of/ton ore deposits, and the emerging copper mine day output of DS is 100,000 tons, and every day need be with lime more than 900 tons.So huge consumption needs the supply of a considerable amount of Lime Factories.Add that Lime Factory is located in dispersion, the unified management difficulty is so quality often is difficult to the fort card.Lime quality is bad, and lime consumption is just big more, and so vicious circle makes mine management and production division be busy with dealing with, and is very passive.Simultaneously, the increase of lime consumption has improved production cost, has increased business burden.For this reason, people are seeking a large amount of new technologies that reduce lime consumption or remove lime fully always, for many years, domestic scientific research institutions, institution of higher learning do a lot of work in this respect, have obtained certain achievement.But the work of being done in the past also only limits to reduce the lime consumption aspect, can't accomplish copper sulphur content from do not use lime fully.
Summary of the invention
The objective of the invention is to provide a kind of composite restrainer, to replace whole lime that existing Mine Cu sulphur content adds in process, realize safely and efficiently copper sulphur content from, improve the rate of recovery of copper concentrate grade and copper, when obtaining qualified copper concentrate and sulphur concentrate, can also improve other valuable components with the association of copper sulphur significantly, as the rate of recovery of gold, silver, molybdenum, cobalt etc.
The technical scheme that the present invention is adopted for its technical problem of solution is: copper-sulfur separating process without lime is characterized in that: (1) in operation, has adopted a kind of composite restrainer at copper sulphur content, and the composition of this composite restrainer has two kinds of prescriptions:
Prescription one:
XCa (Ocl)
2YCaCL
2ZH
2O, wherein:
X is about 2, and Y is about 2, and Z is about 42;
Prescription two:
ACa(Ocl)
2·BCaCL
2·CCa(OH)
2·2H
2O
Wherein: A is about 6, and B is about 2, and C is about 4;
(2) a kind of composite restrainer in above-mentioned two kinds of prescriptions is added copper sulphur content in preceding flowsheet of slurry agitation groove according to the ratio of 150-300g/t raw ore, addition manner can adopt pendulum-type or slot type oscillating feeder to concentrate or the branch administration;
(3) after the administration, according to conventional copper sulphur content from flow process, adopt conventional copper sulphur content from equipment carry out copper sulphur content from.
If in the copper-sulfide mixed concentrate to be separated, the weight percentage of Cu is 6%-10%, the weight percentage of S is 25%-35%, then adopts the composite restrainer of described first kind of prescription.
If in the copper-sulfide mixed concentrate to be separated, the weight percentage of Cu is 3%-5%,, the weight percentage of S is 30%-45%, then adopts the composite restrainer of described second kind of prescription.
The present invention has the following advantages and effect compared with the prior art.
Advantage: 1, need not make breast, add easily, the preparation consumption significantly reduces.General lime consumption 2-3kg/t raw ore, the high 9-11kg/t raw ore that reaches.Lime needs can add after special system breast, the digestion; This composite restrainer consumption 150-300g/t raw ore need not made breast, directly adds.
2, improve the rate of recovery of copper concentrate grade and copper.With the lime method copper sulphur content of parallel contrast from comparing, the copper concentrate grade improves 2%-4%, copper recovery improves 0.5%-1.0%.
3, significantly improve the rate of recovery of association useful constituent.With the lime method copper sulphur content of parallel contrast from comparing, association has the rate of recovery of gold in the valency combination to improve 2%-5%, the rate of recovery of silver improves 2%-10%, the rate of recovery of molybdenum improves 5%-20%, the rate of recovery of cobalt improves 5%-10%.
4, the separating medium pH value is low, is generally PH=8-8.5, selects the sulphur operation can not add the sulfuric acid activation, directly selects sulphur.Saved the activator cost.
5, the efflux wastewater pH value is low, and PH=8-8.5 does not pollute environment, social benefit and obvious environment benefit.
Effect: completely abolish the lime of copper sulphur content from middle interpolation.With a scale is the factory that selects of 1000t/d, ten thousand yuan of year newly-increased economic benefit 300-500; To a scale is the factory that selects of 10000t/d, and a year newly-increased economic benefit is 3,000 ten thousand-5,000 ten thousand yuan.The present invention is that Mine Cu sulphur content selects history the next item up major progress.
The specific embodiment
Embodiment one:
In October, 2000, " copper-sulfur separating process without lime " carried out on-the-spot THE INDUSTRIAL TRIAL in ore dressing plant, copper mine Sizhou, Dexing, Jiangxi Province to December.Production scale; Day is handled 10000 tons in raw ore.Head grade: Cu 0.38%, S 2.2%, golden 0.2g/t, silver-colored 1.2g/t, molybdenum 0.007%.
The lime method production system that production period, scene are provided with a same scale is system as a comparison.The technological process of two systems is the same, and equipment is the same with operational administrative.Lime method copper sulphur content is from lime consumption: the 4.5kg/t raw ore does not have lime copper sulphur content and suppresses dosing from composition: the 150/t raw ore
The trial production index is (%) relatively:
| Technology type | Copper concentrate | The sulphur concentrate | ||||||||
| Copper grade | Copper reclaims the position | Gold grade | Gold recovery | The silver grade | Silver recovery | The molybdenum grade | Molybdenum recovery | The sulphur grade | Sulfur recovery rate | |
| No lime worker | 30.61 | 98.93 | 12.02 | 82.65 | 39.70 | 89.65 | 0.199 | 64.74 | 36.76 | 67.97 |
| Lime technology | 29.09 | 98.10 | 11.56 | 78.56 | 38.30 | 78.51 | 0.120 | 31.90 | 35.47 | 67.20 |
| Compare | +1.52 | +0.83 | +0.46 | +4.09 | +1.40 | +11.14 | +0.079 | +32.84 | +1.29 | +0.77 |
※ gold, silver grade is g/t.
Composite restrainer consists of: 6Ca (Ocl)
22CaCL
24Ca (OH)
22H
2O.
Economic benefit: after adopting composite restrainer to replace lime, the preparation cost reduces by 0.45 yuan/t raw ore, adds the output value that metals such as copper, gold, silver, molybdenum increase, but 6,493 ten thousand yuan of no lime new technology new returns in every year.
Embodiment two:
The 3-9 month in 2000, " copper-sulfur separating process without lime " implemented in Da Ye Iron Mine.
Production scale: 8500 tons in day processing raw ore, raw ore contains Cu 0.48%, and S 1.68%, and Co 0.016%, and Fe 46.27%, Au 0.15g/t.
Between implementation period: no lime technology day is handled 6000 tons of raw ores, and comparison system lime technology day output is 2500 tons of raw ores.
No lime technology preparation consumption: composite restrainer: 200g/t.
Lime technology lime consumption: lime 1100g/t.
Composite restrainer is formed; 2Ca (Ocl)
22CaCL
242H
2O.
Production target is (%) relatively: ※ gold, silver grade is g/t
| Technology type | Copper concentrate | The sulphur concentrate | ||||||
| Copper grade | Copper recovery | Gold grade | Gold recovery | The sulphur grade | Sulfur recovery rate | The cobalt grade | The cobalt rate of recovery | |
| No lime technology | 20.86 | 83.55 | 6.98 | 82.41 | 39.23 | 47.20 | 0.294 | 32.23 |
| Lime technology | 20.85 | 81.23 | 6.06 | 75.67 | 37.70 | 38.74 | 0.268 | 23.49 |
| Compare | +0.01 | +2.32 | +0.92 | +6.74 | +1.53 | +8.46 | +0.026 | +8.74 |
Economic benefit: Da Ye Iron Mine belongs to the few mine of lime consumption, the preparation cost comparison of no lime technology is than the high 0.12 yuan/t of the lime cost raw ore of system, but because the sorting index of copper, sulphur, gold, cobalt is improved obviously, so after going the composite restrainer increase to become this part, the annual newly-increased economic benefit of no lime technology also has 669.19 ten thousand yuan.
Concentrated administration of the present invention and branch administration are the operational two kinds of medications of ore dressing." concentrate administration " is meant once to concentrate in the flow process certain by the preparation with required adding point is disposable and all feeds; " branch administration " is meant that then required adding preparation is divided into multiple spot a plurality of places on stream to add successively.
Be to concentrate administration or the branch administration generally will be decided by ore character and experiment.In general ore character is relatively good, separates than be easier to then can a concentrated administration, otherwise then need carry out the branch administration.
" the conventional separation " of the present invention refers at copper sulphur content in operation, and by common flowage structure, common regime of agent, common method of operating is carried out the FLOTATION SEPARATION of copper sulfur mineral.That is to say that except with the composite restrainer replacing lime, remaining operating duty is undertaken by general copper-sulfur separating process requirement.
The mechanism of action of composite restrainer is in the middle of the present invention:
Various mineral are because composition is different with the structure structure, and its physico-chemical property, surface nature and electrochemical properties differ from one another.The adding of preparation is exactly on purpose to enlarge between them each other in the difference aspect certain, reaches different minerals purpose separated from one another.
The mechanism of action of composite restrainer, in simple terms, utilize the difference of copper sulfur mineral surface electrochemistry character exactly, add after the inhibitor, because inhibitor is the stronger oxidant of a kind of chemism, under the electrochemical principle effect, can be optionally attached to being similarly the stronger iron sulfide mineral surface of chemism, with its generation electrochemical reaction, form hydrophilic insoluble membranoid substance iron sulfide mineral is wrapped up, its hydrophilic staying in the mineral is suppressed; Copper mineral then not with the inhibitor effect, the surface keeps hydrophobicity, is attached on the flotation bubble under the collecting agent effect, come-up becomes copper concentrate, reach copper sulphur content from.
Claims (3)
1, a kind of copper-sulfur separating process without lime is characterized in that:
(1) at copper sulphur content in operation, adopted a kind of composite restrainer, the composition of this composite restrainer has two kinds of prescriptions:
Prescription one:
XCa (Ocl)
2YCaCL
2ZH
2O, wherein:
X is about 2, and Y is about 2, and Z is about 42;
Prescription two:
ACa(Ocl)
2·BCaCL
2·CCa(OH)
2·2H
2O
Wherein: A is about 6, and B is about 2, and C is about 4;
(2) add a kind of composite restrainer in above-mentioned two kinds of prescriptions to copper sulphur content in preceding flowsheet of slurry agitation groove according to the ratio of 150-300g/t raw ore, addition manner can adopt pendulum-type or slot type oscillating feeder to concentrate or the branch administration;
(3) after the administration, according to conventional copper sulphur content from flow process, adopt conventional copper sulphur content from equipment carry out copper sulphur content from.
2, copper-sulfur separating process without lime according to claim 1, it is characterized in that: if in the copper-sulfide mixed concentrate to be separated, the weight percentage of Cu is 6%-10%, and the weight percentage of S is 25%-35%, then adopts the composite restrainer of described first kind of prescription.
3, copper-sulfur separating process without lime according to claim 1, it is characterized in that: if in the copper-sulfide mixed concentrate to be separated, the weight percentage of Cu is 3%-5%, and the weight percentage of S is 30%-45%, then adopts the composite restrainer of described second kind of prescription.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011175095A CN1147365C (en) | 2001-05-29 | 2001-05-29 | Copper-sulfur separating process without lime |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011175095A CN1147365C (en) | 2001-05-29 | 2001-05-29 | Copper-sulfur separating process without lime |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1323659A CN1323659A (en) | 2001-11-28 |
| CN1147365C true CN1147365C (en) | 2004-04-28 |
Family
ID=4662752
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011175095A Expired - Fee Related CN1147365C (en) | 2001-05-29 | 2001-05-29 | Copper-sulfur separating process without lime |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101537387B (en) * | 2009-04-21 | 2012-05-30 | 广州有色金属研究院 | Beneficiation method of copper-sulphur aeonite |
| CN107470033B (en) * | 2017-08-01 | 2019-12-06 | 湖南华麒资源环境科技发展有限公司 | Method for controlling flotation pollution of zinc sulfide minerals and iron sulfide minerals from source |
| CN111085342B (en) * | 2019-11-22 | 2022-04-19 | 铜陵有色金属集团股份有限公司 | Method for comprehensively recovering copper and sulfur from deep-sea high-sulfur high-copper mine and application thereof |
| CN112371350A (en) * | 2020-11-27 | 2021-02-19 | 矿冶科技集团有限公司 | Inhibitor for lime-free lead-sulfur beneficiation, lime-free lead-sulfur beneficiation method and application |
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2001
- 2001-05-29 CN CNB011175095A patent/CN1147365C/en not_active Expired - Fee Related
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