CN103386356A - Flotation method for copper sulphide ore - Google Patents
Flotation method for copper sulphide ore Download PDFInfo
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- CN103386356A CN103386356A CN2012101410729A CN201210141072A CN103386356A CN 103386356 A CN103386356 A CN 103386356A CN 2012101410729 A CN2012101410729 A CN 2012101410729A CN 201210141072 A CN201210141072 A CN 201210141072A CN 103386356 A CN103386356 A CN 103386356A
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Abstract
The invention relates to a flotation method for copper sulphide ore. The method comprises the following steps of (1) performing primary grinding on the copper sulphide ore so as to obtain a primary grinding product; (2) performing first flotation on the primary grinding product by utilizing a first trapping agent so as to obtain a monomer copper mineral and secondary copper-rich mineral intergrowth-contained first flotation product and first flotation residues; (3) performing second flotation on the first flotation residues by utilizing a second trapping agent so as to obtain copper-poor intergrowth, complex copper mineral and free sulfur-contained a second flotation product and second flotation tailings; (4) performing secondary grinding on the second flotation product so as to obtain a secondary grinding product; and (5) performing copper-sulfur separation on the secondary grinding product in a strong caustic environment so as to obtain copper concentrate and sulfur concentrate. By utilizing the flotation method for the copper sulphide ore provided by the invention, copper-sulfur flotation can be effectively performed on the complex and refractory copper sulphide ore.
Description
Technical field
The present invention relates to field of metallurgy, especially, the present invention relates to a kind of method for floating of copper sulfide ore, more specifically, the present invention relates to a kind of preferential fast floating copper of complicated Refractory sulfide copper ore, the mixed Flotation of copper and sulphur technological process of choosing ore deposit to regrind.
Background technology
Traditional copper sulfide ore method for floating, when the raw ore copper grade is 1.49%, the sulphur grade is higher while being 17.58%, and Cu Concentrate Grade 18.01%, the rate of recovery are 73.98%; Sulphur concentrate grade 36.56%, the rate of recovery only have 34.20%.And dosing is large, and especially lime consumption, up to 18.01kg/t, causes the phenomenon of fouling on the mine tailing carrier wall, and the mine tailing carrier pipe is often stopped up, and impact is normally produced, and investment, cost are high, and index, benefit are low.
Thereby present copper sulfide ore method for floating still remains to be improved.
Summary of the invention
The present invention is based on inventor's following discovery and completes:
Traditional copper sulfide ore method for floating generally has two kinds: diffeential floatation and bulk flotation.Diffeential floatation is exactly preferentially to select copper, copper tail to select sulphur, copper to roughly select concentrate regrinding and select, and copper is roughly selected in concentrate and contained monomer copper mineral and easy floating intergrowth copper mineral, if all advance to regrind, the easy argillization of monomer copper mineral of having dissociated, worsened mineral processing index on the contrary; And first floating copper must press down sulphur, needs to use large quantities of lime, waits difficult activation of sulphur while coming again float sulphur, also causes the phenomenon of fouling on the pulp conveying tube wall, and ore pulp pipe is often stopped up, and impact is production normally, and investment, cost are high, and index, benefit are low.Bulk flotation, be exactly that Floatation of Copper sulphur is lost tail, copper sulphur content selects from concentrate regrinding from, copper sulphur content again again, also there will be the phenomenon of the easy argillization of monomer copper mineral of having dissociated, and mineral processing index is still bad.
Because its physical property separately of every kind of copper mineral is different, disseminated grain size is uneven, floatability is variant, therefore be necessary to adopt the method for floating of recovery respectively and selective fine grinding, namely one section the corase grind ore deposit after, the monomer copper mineral that fast-flotation coarse granule and flotation performance are good and secondary rich copper mineral intergrowth, to avoid the argillization in two sections fine grinding ore deposits, for poor copper intergrowth, Complicated Copper mineral and free sulfur, adopt after bulk flotation again two sections fine grindings separating flotation again, main fine grain copper mineral and the sulphur of reclaiming, thus realize improving the purpose of copper sulfur recovery.
The present invention is intended to solve at least one of technical problem that exists in prior art.For this reason, one object of the present invention is to propose a kind of method that can effectively to mineralogical property complexity, the uneven copper sulfide ore of disseminated grain size, carry out flotation.
According to an aspect of the present invention, the invention provides a kind of method for floating of copper sulfide ore.According to embodiments of the invention, the method comprises the following steps:
(1) described copper sulfide ore is carried out primary grinding, in order to obtain granularity, account at least 65% primary grinding product less than 200 purpose particles;
(2) utilize the first capturing agent, described primary grinding product is carried out the first flotation, in order to obtain containing the first float product of monomer copper mineral and secondary rich copper mineral intergrowth, and the first flotation residue;
(3) utilize the second capturing agent, described the first flotation residue is carried out the second flotation, in order to obtain containing the second float product of poor copper intergrowth, Complicated Copper mineral and free sulfur, and the second flotation tailing;
(4) described the second float product is carried out secondary grinding, in order to obtain granularity, account at least 85% secondary grinding product less than 325 purpose particles; And
(5) to described secondary grinding product carry out in the strong basicity environment copper sulphur content from, in order to obtain copper concentrate and sulphur concentrate.
Wherein, need to prove: after the primary grinding product is carried out the first flotation, can access the first float product that contains monomer copper mineral and secondary rich copper mineral intergrowth, and the first flotation residue, therefore also the first flotation can be called preferentially and roughly select; And the first flotation residue is carried out the second flotation, can access the second float product that contains poor copper intergrowth, Complicated Copper mineral and free sulfur, with the second flotation tailing, particularly, the second flotation can be divided into mixing roughly selects and mixing is scanned, thus, by mixing, roughly select and can obtain the second float product, and by mixing successively, roughly select and mixing is scanned and can be obtained the second flotation tailing; In addition, the secondary grinding product is carried out in the strong basicity environment copper sulphur content from, can access copper concentrate and sulphur concentrate, particularly, copper sulphur content is selectedly scanned with separating from being divided into again separating to roughly select, to separate, the secondary grinding product is carried out first separation roughly select, three separation are selected scans with secondary separation, thereby can obtain copper concentrate and sulphur concentrate.
According to embodiments of the invention, the type of manageable copper sulfide ore also is not particularly limited.According to embodiments of the invention, described copper sulfide ore is be selected from cupriferous pyrite ore, cupric skarns ore, cupric porphyry ore, cupric breccia ore and cupriferous pyrite at least a, and wherein, cupriferous pyrite is magnetite ore.
According to embodiments of the invention, the type of the first capturing agent (in this article sometimes also referred to as " collecting agent ") also is not particularly limited, and according to one embodiment of present invention, it can be the black ammonium of fourth ammonium., according to embodiments of the invention, further comprise the copper grade of determining the first float product; At the copper grade of described the first float product at least 20% the time, with the first float product as copper concentrate, at the copper grade of described the first float product lower than 20% the time, the copper sulphur content that the first float product is carried out step (5) from, in order to obtain grade greater than 20% qualified copper concentrate.
According to embodiments of the invention, the type of the second capturing agent also is not particularly limited.According to embodiments of the invention, the second capturing agent is butyl xanthate., according to embodiments of the invention, after carrying out the second flotation, described the second flotation tailing is carried out scanning for twice, in order to obtain the mine tailing that can abandon.
According to embodiments of the invention, carry out copper sulphur content from condition, and be not particularly limited.According to embodiments of the invention, in step (5), the pH of described strong basicity environment can 12.
According to embodiments of the invention, copper sulphur content is from may further include: described secondary grinding product is carried out copper sulphur content successively from roughly selecting, and copper sulphur content is from selected and copper sulphur content from scanning.
According to embodiments of the invention, described copper sulphur content is from further comprising: described secondary grinding product is carried out a copper sulphur content successively from roughly selecting, and three copper sulphur content is from selected and twice bronze medal sulphur content from scanning.
Copper sulfide ore method for floating of the present invention, it is the flotation process that a kind of complicated Refractory sulfide copper ore " preferentially floats fast copper, mixes and choose ore deposit to regrind ", it is characterized in that: ore properties is complicated, not only ore type has cupriferous pyrite ore, cupric skarns ore, cupric porphyry ore, cupric breccia ore and cupriferous pyrite---magnetite ore more, the copper-bearing mineral kind is also various, existing primary copper mineral, secondary copper ores is arranged again, water-soluble copper, in free copper oxide and limonite and breccia in conjunction with cupric oxide etc.In a word, the dip-dye of copper and distribution quite extensively disperse.The disseminated grain size scope of its essential mineral is wide and extremely inhomogeneous.And comprise following process: (1) first step is for preferentially roughly selecting, be-200 orders 65% with regard to the primary grinding product granularity, in weakly alkaline environment (pH=8), preferentially roughly select and first use a small amount of selective good copper mineral collecting agent (ammonium as black in the fourth ammonium), preferential monomer copper mineral and the secondary rich copper mineral intergrowth that reclaims fast in the primary grinding product,, if the raw ore copper grade is higher, can obtains qualified copper concentrate and directly enter dewatering operation; If the raw ore copper grade is not high, be difficult to obtain qualified copper concentrate and need enter copper sulphur content from a selected operation, will hiding in a word regrinds is affected sorting index by argillization.(2) second step is bulk flotation, still in weakly alkaline environment (pH=8), add the good medicament of collecting (as butyl xanthate), the first step is preferentially roughly selected remaining poor copper intergrowth, Complicated Copper mineral and a large amount of free sulfurs floats, be referred to as chats or mixed crude concentrate, the flotation tailing that will go on foot simultaneously is just discardable after twice mixing scanned.(3) the 3rd steps regrinded for chats, the ore properties such as close according to disseminated grain size inhomogeneities, the symbiosis of complicated refractory copper ore, realized the chats of different Cu mineral is carried out selective regrinding, copper mineral is fully dissociated, thereby reach the purpose that improves complicated refractory copper ore copper sulphur technical indicator.(4) the 4th the step for copper sulphur content from, to regrinding product, its granularity-325 order 85%, in the strong basicity environment (pH=12) carry out copper sulphur content from, namely through first separation roughly select, three separation are selected, direct acquisition copper concentrate and sulphur concentrate are scanned in secondary separation; The chats of hybrid separation selected, be not to turn back to routinely previous separation to roughly select in operation and go, but enter regrind mill, and the chance that allows the intergrowth mineral of monomer dissociation not yet regrind in addition and to separate, improve the copper concentrate rate of recovery as far as possible, reduces the loss of copper.
Technique effect of the present invention is: by the characteristic of process mineralogy research of ore, find a flotation process that more is fit to ore properties " preferentially float fast copper, mix and choose ore deposit to regrind ", it is with respect to selective flotation flowsheet, and Cu Concentrate Grade improves 3.42 percentage points, the rate of recovery improves 2.88 percentage points; The sulphur concentrate grade improves 2.95 percentage points, the rate of recovery improves 28.83 percentage points; Reagent consumption: butyl xanthate reduces 29.5g/t, butyl ammonium aerofloat reduces 3.48g/t, foaming agent minimizing 17.97gt, lime minimizing 8.56kg/t; Pulp conveying is smooth and easy, remarkable in economical benefits.
The invention has the advantages that: (1) flowage structure simple and stable, easily operation, convenient management, the reliable also significantly raising of floatation indicators; (2) the second flotation of second step just can be thrown tail, removes 73.5% ore amount, thereby reduces the amount of regrinding, and reduces flotation trough number approximately 19.51%, has saved investment and energy consumption; (3) the reagent consumption total amount reduces, and has reduced cost, and flow process is unimpeded, and the favorable environment protection.The present invention determines to have very strong directive significance and reference value to Nonferrous Metals sulfide flotation technique.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or by practice of the present invention, recognize.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 is the schematic flow sheet according to the method for floating of the copper sulfide ore of the embodiment of the present invention.
The specific embodiment
Below describe embodiments of the invention in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
Conventional method:
With reference to figure 1, the method for floating of copper sulfide ore of the present invention flow process as follows:
1 selects copper-sulphide ores through primary grinding for complicated difficult, product granularity requires to reach-200 orders 65%, in the weakly alkaline environment of pH=8, add a small amount of selective good copper mineral capturing agent and foaming agent, through preferentially roughly selecting 2, the rough concentrate product to this operation obtains, namely preferentially reclaim monomer copper mineral and secondary rich copper mineral intergrowth in the primary grinding product fast,, if copper grade reaches more than 20%, can directly enter dewatering operation; , if copper grade does not reach 20%, need enter and separate selected one 9 operations; With preferably roughly select 2 mine tailing through mixing roughly select 1 and mixing roughly select 24, and mix scan 1 and mixing scan 26, with regard to the mine tailing of discardable total ore amount 73.5%; For mixing roughly select 1 with mix the intermediate products roughly select 24 rough concentrate, and separate selected 1 chats, its process is regrinded 7, make product granularity reach-325 orders 85%, in the strong basicity environment of pH=12, carry out copper sulphur content from roughly selecting 8, separate for three times selectedly 9,10,11, secondary separation scans 12,13, thereby obtains copper concentrate and sulphur concentrate.
Embodiment 1:
(1) utilize the method for floating (in this article sometimes also referred to as technique of the present invention) of copper sulfide ore of the present invention to carry out the copper sulfide ore flotation:
At first, lumpiness is transported to the crude ore bin in coarse crushing workshop, ore dressing plant less than the raw ore of 1000mm by stope, through jaw crusher (PEJ-1215, North Heavy Industry Group Co., Ltd.) coarse crushing, the maximum lumpiness of ore is down to below 350mm, then utilize successively wet type semi-autogenous mill (φ 6.4 * 3.3, North Heavy Industry Group Co., Ltd.) and wet overflow type ball mill (φ 4.8 * 7.0, North Heavy Industry Group Co., Ltd.) to grind to prepare ore pulp to the Copper Ores after coarse crushing.
Then utilize a cluster cyclone (FX660-GT * 7, Weihai Haiwang Hydrocyclone Co., Ltd., Beijing Huayu Engineering Co., Ltd. of Zh) to described ore pulp carry out classification take obtain concentration as 30%, granularity is as the overflow ore pulp of-200 orders 65%, size mixing (pH=8) and add butyl ammonium aerofloat after enter and preferably roughly select flotation device (KYF-50, Beijing Mine and Metallurgy General Inst) carry out preferential fast floating copper, in order to obtain preferably to roughly select froth pulp copper, when preferably roughly selecting the froth pulp copper grade greater than 20% the time, it is directly entered dewatering operation as copper concentrate; When preferably roughly selecting the froth pulp copper grade greater than 20% the time, it is entered and separates a selected operation; In roughly selecting one, two flotation device, mixing adds butyl xanthate, carry out bulk flotation, and after the mixing that obtains is roughly selected one, two froth pulp (chats) and is merged and regrind, through first separation roughly select, three separation are selected, secondary separation is scanned and obtained copper concentrate and sulphur concentrate, wherein separate selected one residue (chats) and also enter and regrind.
(2) simultaneously, above-mentioned raw ore being utilized the method for floating of traditional copper sulfide ore---the copper sulfide ore flotation is carried out in diffeential floatation (in this article sometimes also referred to as traditional handicraft), namely by preferentially selecting copper, copper tail to select sulphur, copper to roughly select the flow process that concentrate regrinding selects again, is undertaken.Wherein, the idiographic flow of diffeential floatation method is well known in the art, does not repeat them here.
Thus, utilize respectively technique of the present invention and traditional handicraft to carry out the flotation of sulphur copper to aforementioned raw ore.Then, based on flotation results, main beneficiating technology index, medicament and the steel ball unit consumption of technique of the present invention and traditional handicraft compared, result is as shown in following table 1 and table 2:
The main beneficiating technology index contrast of table 1 technique of the present invention and traditional handicraft
As can be seen from Table 1: with traditional handicraft, compare, utilize technique of the present invention to carry out the copper sulfide ore flotation, under the prerequisite that copper sulphur head grade descends, no matter be that copper sulfur recovery rate or concentrate grade all have raising in various degree, concentrate grade copper raising 3.42%, sulphur improve 2.95%, and copper recovery improves 2.88%, selects sulfur recovery rate to improve 28.83%.
The medicament of table 2 technique of the present invention and traditional handicraft, the contrast of steel ball unit consumption
As can be seen from Table 2: with traditional handicraft, compare, utilize technique of the present invention to carry out the copper sulfide ore flotation, except the steel ball unit consumption improved 0.05kg/t, reagent consumption all reduced: fourth ammonium minimizing 3.48g/t, xanthate minimizing 29.5g/t, foaming agent reduce 17.97g/t, lime minimizing 8.56kg/t, vulcanized sodium reduces 109.2g/t.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiments of the invention, those having ordinary skill in the art will appreciate that: in the situation that do not break away from principle of the present invention and aim can be carried out multiple variation, modification, replacement and modification to these embodiment, scope of the present invention is limited by claim and equivalent thereof.
Claims (9)
1. the method for floating of a copper sulfide ore, is characterized in that, comprises the following steps:
(1) described copper sulfide ore is carried out primary grinding, in order to obtain granularity, account at least 65% primary grinding product less than 200 purpose particles;
(2) utilize the first capturing agent, described primary grinding product is carried out the first flotation, in order to obtain containing the first float product of monomer copper mineral and secondary rich copper mineral intergrowth, and the first flotation residue;
(3) utilize the second capturing agent, described the first flotation residue is carried out the second flotation, in order to obtain containing the second float product of poor copper intergrowth, Complicated Copper mineral and free sulfur, and the second flotation tailing;
(4) described the second float product is carried out secondary grinding, in order to obtain granularity, account at least 85% secondary grinding product less than 325 purpose particles; And
(5) to described secondary grinding product carry out in the strong basicity environment copper sulphur content from, in order to obtain copper concentrate and sulphur concentrate.
2. method according to claim 1, is characterized in that, described copper sulfide ore is be selected from cupriferous pyrite ore, cupric skarns ore, cupric porphyry ore, cupric breccia ore at least a.
3. method according to claim 1, is characterized in that, described the first capturing agent is the black ammonium of fourth ammonium.
4. method according to claim 1, is characterized in that, further comprises:
Determine the copper grade of described the first float product;
At the copper grade of described the first float product at least 20% the time, with described the first float product as copper concentrate, at the copper grade of described the first float product lower than 20% the time, the copper sulphur content that described the first float product is carried out step (5) from, in order to obtain copper concentrate.
5. method according to claim 1, is characterized in that, described the second capturing agent is butyl xanthate.
6. method according to claim 1, is characterized in that, further comprises, described the second flotation tailing carried out scanning for twice, in order to obtain the mine tailing that can abandon.
7. method according to claim 1, is characterized in that, in step (5), the pH of described strong basicity environment is 12.
8. method according to claim 1, is characterized in that, described copper sulphur content is from further comprising: to described secondary grinding product carry out successively copper sulphur content from roughly selecting, copper sulphur content is from selected and copper sulphur content from scanning.
9. method according to claim 8, is characterized in that, described copper sulphur content is from further comprising: described secondary grinding product is carried out a copper sulphur content successively from roughly selecting, and three copper sulphur content is from selected and twice bronze medal sulphur content from scanning.
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| CN104759353A (en) * | 2015-04-10 | 2015-07-08 | 铜陵有色金属集团股份有限公司 | Method for recycling copper minerals from high-sulfur rebellious copper ore step by step |
| CN105057111A (en) * | 2015-08-28 | 2015-11-18 | 北京矿冶研究总院 | Copper-sulfur separation method for copper-sulfur ore |
| CN105435952A (en) * | 2015-11-09 | 2016-03-30 | 湖南有色金属研究院 | Method for recovering high-pelitic and high-iron copper oxide ore hard to treat |
| CN105755295A (en) * | 2016-03-07 | 2016-07-13 | 紫金矿业集团股份有限公司 | Method for recovery of copper from low-grade secondary copper sulfide ore |
| CN107413513A (en) * | 2017-06-07 | 2017-12-01 | 中南大学 | The method for floating of copper sulfide zinc ore |
| CN107899754A (en) * | 2017-11-13 | 2018-04-13 | 西部矿业股份有限公司 | A kind of shallow crust structures method for floating of shallow crust structures highly efficient depressor composition and application said composition |
| CN108514950A (en) * | 2018-04-04 | 2018-09-11 | 紫金矿业集团股份有限公司 | A method of improving copper-sulphide ores copper recovery |
| CN108722678A (en) * | 2017-04-14 | 2018-11-02 | 武汉科技大学 | A kind of method for floating of cupric oxide ore |
| CN109174442A (en) * | 2018-08-10 | 2019-01-11 | 中国地质科学院矿产综合利用研究所 | Physical beneficiation removal method for heavy metals in copper tailings |
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| CN112264197A (en) * | 2020-09-22 | 2021-01-26 | 铜陵有色金属集团股份有限公司 | Combined inhibitor for high-magnetic pyrite type copper-sulfur ore and beneficiation method thereof |
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| CN113926586A (en) * | 2021-10-25 | 2022-01-14 | 紫金矿业集团股份有限公司 | High-sulfuration type shallow copper forming ore and ore dressing method for fine utilization of tailings thereof |
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| CN105057111A (en) * | 2015-08-28 | 2015-11-18 | 北京矿冶研究总院 | Copper-sulfur separation method for copper-sulfur ore |
| CN105435952A (en) * | 2015-11-09 | 2016-03-30 | 湖南有色金属研究院 | Method for recovering high-pelitic and high-iron copper oxide ore hard to treat |
| CN105755295A (en) * | 2016-03-07 | 2016-07-13 | 紫金矿业集团股份有限公司 | Method for recovery of copper from low-grade secondary copper sulfide ore |
| CN105755295B (en) * | 2016-03-07 | 2017-10-17 | 紫金矿业集团股份有限公司 | The method that copper is reclaimed from low-grade secondary copper sulfide mineral |
| US11548013B2 (en) | 2017-02-15 | 2023-01-10 | Metso Outotec Finland Oy | Flotation arrangement, its use, a plant and a method |
| CN110300628A (en) * | 2017-02-15 | 2019-10-01 | 奥图泰(芬兰)公司 | Flotation unit, its purposes, device and method |
| CN108722678A (en) * | 2017-04-14 | 2018-11-02 | 武汉科技大学 | A kind of method for floating of cupric oxide ore |
| CN107413513B (en) * | 2017-06-07 | 2019-11-26 | 中南大学 | The method for floating of copper sulfide zinc ore |
| CN107413513A (en) * | 2017-06-07 | 2017-12-01 | 中南大学 | The method for floating of copper sulfide zinc ore |
| CN107899754B (en) * | 2017-11-13 | 2019-09-20 | 西部矿业股份有限公司 | A kind of shallow crust structures method for floating |
| CN107899754A (en) * | 2017-11-13 | 2018-04-13 | 西部矿业股份有限公司 | A kind of shallow crust structures method for floating of shallow crust structures highly efficient depressor composition and application said composition |
| CN108514950A (en) * | 2018-04-04 | 2018-09-11 | 紫金矿业集团股份有限公司 | A method of improving copper-sulphide ores copper recovery |
| CN109174442A (en) * | 2018-08-10 | 2019-01-11 | 中国地质科学院矿产综合利用研究所 | Physical beneficiation removal method for heavy metals in copper tailings |
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| CN112264197B (en) * | 2020-09-22 | 2022-11-11 | 铜陵有色金属集团股份有限公司 | Combined inhibitor for high-magnetic pyrite type copper-sulfur ore and beneficiation method thereof |
| CN112934476A (en) * | 2021-02-02 | 2021-06-11 | 江西理工大学 | Beneficiation method for recovering copper and sulfur from copper-tungsten polymetallic ore |
| CN113926586A (en) * | 2021-10-25 | 2022-01-14 | 紫金矿业集团股份有限公司 | High-sulfuration type shallow copper forming ore and ore dressing method for fine utilization of tailings thereof |
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