CN109833979A - A method of recycling molybdenite from copper cleaner tailings - Google Patents
A method of recycling molybdenite from copper cleaner tailings Download PDFInfo
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- CN109833979A CN109833979A CN201910273017.7A CN201910273017A CN109833979A CN 109833979 A CN109833979 A CN 109833979A CN 201910273017 A CN201910273017 A CN 201910273017A CN 109833979 A CN109833979 A CN 109833979A
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- molybdenite
- molybdenum
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- cleaner tailings
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Abstract
The method that the invention discloses a kind of to recycle molybdenite from copper cleaner tailings, copper cleaner tailings ore pulp to be processed is concentrated by concentrator, centrifuge first；Into the ore pulp after concentration plus water is sized mixing；By treated, ore pulp introduces roughing flotation unit, sequentially sequentially adds regulator, pyrite inhibitor, molybdenite collecting agent and foaming agent and is stirred roughing, obtains molybdenum rough concentrate and rougher tailings；Pyrite inhibitor BK-YS and molybdenite collecting agent BK-PM is added into rougher tailings again scan for 1~2 time；Pyrite inhibitor BK-YS is added into molybdenum rough concentrate and carries out selected rear acquisition molybdenum concentrate.The above method has good separating effect to the molybdenite in copper cleaner tailings, and molybdenite is enable sufficiently to recycle, to improve mineral resources comprehensive utilization level.
Description
Technical field
The present invention relates to technical field of mineral processing more particularly to a kind of sides that molybdenite is recycled from copper cleaner tailings
Method.
Background technique
Abundance of the molybdenum in the earth's crust is 0.00011%, is than sparser resource.In daily life, molybdenum has extensively
Application, steel and alloy additive, molybdenum-base alloy and chemical products are three big application fields of molybdenum.In nature, it has been found that
More than 30 kinds of molybdenum-bearing minerals, wherein common are molybdenite, wulfenite, calcium molybdate ore, powellite etc..In all mineral
The raw material almost all of most importantly molybdenite, global molybdenum industry relies on molybdenite, other mineral proportions are very low.Brightness molybdenum
Mine also widely forms polymetallic deposit with other sulphide ore symbiosis, such as copper-molybdenum sulfur deposit, tungsten in addition to forming single molybdenum deposit
Bismuth deposit etc..Wherein, the molybdenum recycled from copper-molybdenum ore accounts for about half of total output or so.Therefore, reinforce copper-molybdenum ore and select molybdenum
The innovation of theory and technology has great importance for molybdenite resource recycling.
" copper-molybdenum bulk flotation-copper-cobalt ore " process copper-molybdenum ore is generallyd use in the prior art.It is mixed in copper-molybdenum
It in the selected operation of flotation, often adds a large amount of lime and inhibits pyrite under high pH system, by copper-molybdenum mineral and pyrite point
From, realize copper-molybdenum it is effective enrichment and recycling.Since lime consumption is larger, a large amount of calcium ion can reduce molybdenite in ore pulp
Floatability causes molybdenite loss in part in tailing, has seriously affected enrichment and recycling of the molybdenum in copper concentrate.
Summary of the invention
The method that the object of the present invention is to provide a kind of to recycle molybdenite from copper cleaner tailings, this method is to the selected tail of copper
Molybdenite in mine has good separating effect, and molybdenite is enable sufficiently to recycle, to improve the comprehensive benefit of mineral resources
With level.
The purpose of the present invention is what is be achieved through the following technical solutions:
A method of recycling molybdenite from copper cleaner tailings, which comprises
Copper cleaner tailings ore pulp to be processed is concentrated step 1 by concentrator, centrifuge, makes the quality of ore pulp
Concentration reaches 65%~75%, removes remaining floating agent in moisture and ore pulp；
Step 2 adds water to size mixing, and is stirred in agitator into the ore pulp after concentration；
Step 2 treated ore pulp is introduced roughing flotation unit by step 3, sequentially sequentially adds regulator, Huang
Iron ore inhibitor, molybdenite collecting agent and foaming agent, and it is stirred roughing respectively, obtain molybdenum rough concentrate and rougher tailings；
Pyrite inhibitor BK-YS and molybdenite collecting agent is added in step 4 into the obtained rougher tailings of step 3 again
BK-PM scan for 1~2 time, makes to scan rear tailing containing molybdenum < 0.03%, and molybdenum distributive law < 25%；
Pyrite inhibitor BK-YS progress primary cleaning operation is added into the obtained molybdenum rough concentrate of step 3 for step 5,
The post-job concentrate of primary cleaning is regrinded, until fineness is that -25um grade accounts for 70%~80%, then again selected 3~6
Molybdenum concentrate is obtained after secondary.
As seen from the above technical solution provided by the invention, the above method has the molybdenite in copper cleaner tailings
Good separating effect, enables molybdenite sufficiently to recycle, to improve mineral resources comprehensive utilization level.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill in field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the method flow schematic diagram provided in an embodiment of the present invention that molybdenite is recycled from copper cleaner tailings.
Specific embodiment
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with attached drawing, is implemented as shown in Figure 1 for the present invention
The method flow schematic diagram of molybdenite is recycled in the slave copper cleaner tailings that example provides, which comprises
Copper cleaner tailings ore pulp to be processed is concentrated step 1 by concentrator, centrifuge, makes the quality of ore pulp
Concentration reaches 65%~75%, removes remaining floating agent in moisture and ore pulp；
In this step, in copper cleaner tailings to be processed contain molybdenum 0.06%~0.12%, pulp density be 10%~
20%, fineness is that -25 μm of grades account for 60% or more, and molybdenite liberation degree of minerals is 85% or more.
Molybdenum ore object in the copper cleaner tailings is molybdenite, and containing sulfur minerals are mainly pyrite.
Step 2 adds water to size mixing, and is stirred in agitator into the ore pulp after concentration again；
In this step, mass percent concentration after adding water to size mixing is 20%~25%, and in agitator stirring 3~
5 minutes, revolving speed was 1500~2000r/min.
Step 2 treated ore pulp is introduced roughing flotation unit by step 3, sequentially sequentially adds regulator, Huang
Iron ore inhibitor, molybdenite collecting agent and foaming agent, and it is stirred roughing respectively, obtain molybdenum rough concentrate and rougher tailings；
Here, the regulator being added is calgon, and dosage is 100~300g/t to mine；
The pyrite inhibitor being added is BK-YS, and dosage is 100~300g/t to mine；The BK-YS is a kind of novel
The name code name of pyrite inhibitor, by mass fraction include sodium thioglycolate 60%~80%, tetraethylenepentamine 20%~
40%.
The molybdenite collecting agent being added is BK-PM, and dosage is 30~50g/t to mine；The BK-PM is a kind of efficient
The name code name of molybdenite collecting agent includes that kerosene 40%~60%, diesel oil 30%~40%, alkyl phenol are poly- by mass fraction
Glycol ether 10%~20%.
The foaming agent being added is No. 2 oil, and dosage is 10~30g/t to mine.
Pyrite inhibitor BK-YS and molybdenite collecting agent is added in step 4 into the obtained rougher tailings of step 3 again
BK-PM scan for 1~2 time, makes to scan rear tailing containing molybdenum < 0.03%, and molybdenum distributive law < 25%；
Here, the dosage scanned every time are as follows:
Pyrite inhibitor BK-YS is 50~100g/t to mine；
Molybdenite collecting agent BK-PM is 10~20g/t to mine.
Pyrite inhibitor BK-YS progress primary cleaning operation is added into the obtained molybdenum rough concentrate of step 3 for step 5,
The post-job concentrate of primary cleaning is regrinded, until fineness is that -25um grade accounts for 70%~80%, then again selected 3~6
Molybdenum concentrate is obtained after secondary.
In the step, the pyrite inhibitor BK-YS dosage being added is 20~50g/t to mine.Finally obtained molybdenum
Concentrate contains molybdenum 45%~55%, molybdenum recovery 75%~85%.
In addition, after step 5, scavenger concentrate and selected chats sequence are back to previous flotation operation.
The process flow of the above method is described in detail with specific example below:
Certain copper cleaner tailings contains molybdenum 0.084%, sulfur-bearing 19.03%, cupric 0.086%, and fineness is that -25um grade mineral account for
62.43%.Wherein, the metalliferous mineral overwhelming majority is pyrite, separately there is a small amount of chalcopyrite, molybdenite, limonite, bloodstone etc..
Nonmetallic mineral is mainly quartz, is secondly muscovite, chlorite, ankerite and potassium feldspar, separately has a small amount of biotite, sodium long
Stone, calcite, apatite, rutile, barite etc..Molybdenite connects with gangue mineral richness on a small quantity mainly with monomeric form output
It is raw；The disseminated grain size integrated distribution of molybdenite is in 20~74um.
The technical process of molybdenite is recycled from above-mentioned copper cleaner tailings specifically:
(1) the concentration escapes the medicine: the copper for accounting for 62.43% containing molybdenum 0.084%, concentration 18%, fineness for -25 μm of grades is selected
Tailing ore pulp is concentrated by modes such as concentrator, centrifuges, and the mass concentration of ore pulp reaches 70%, removes moisture and mine
Remaining floating agent in slurry；
(2) size mixing stirring: into the ore pulp after concentration plus water is sized mixing, and the ore pulp that mass percent concentration is 25% is made,
It is stirred 3 minutes in agitator, revolving speed 1750r/min；
(3) roughing operation: ore pulp is introduced into roughing flotation unit, sequentially sequentially adds regulator calgon
200g/t is to mine, and pyrite inhibitor BK-YS100g/t is to mine, and molybdenite collecting agent BK-PM50g/t is to mine, No. 2 oil of foaming agent
17.5g/t is stirred 2 minutes to mine, and respectively, is carried out roughing operation, is obtained molybdenum rough concentrate and rougher tailings；
(4) scan operation: BK-YS and BK-PM being added into rougher tailings and scan for 1 time, scan BK-YS35g/t to
Mine, BK-PM7g/t scan tailing containing molybdenum 0.017%, molybdenum distributive law 20.16% to mine；
(5) selected operation: BK-YS28g/t is added into molybdenum rough concentrate and carries out selected I operation, the essence of selected I operation to mine
Mine, which is regrinded to -25um, accounts for 75%, then selected 3 times, obtains molybdenum concentrate.Final molybdenum concentrate contains molybdenum 53.75%, molybdenum recovery
78.96%.
Above-mentioned scavenger concentrate and selected chats sequence are back to previous flotation operation.
Used molybdenite collecting agent BK-PM is composed of the following components: kerosene 55%, diesel oil 35%, the poly- second of alkyl phenol
Glycol ethers 10%.It is stirred at 25 DEG C after the above component is mixed in proportion and obtains BK-PM after twenty minutes.
Used pyrite inhibitor BK-YS is composed of the following components: sodium thioglycolate 75%, tetraethylenepentamine
25%.It is stirred at 25 DEG C after the above component is mixed in proportion and obtains BK-YS after twenty minutes.
It is worth noting that, the content being not described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field's public affairs
The prior art known.
In conclusion the method for the embodiment of the present invention due to molybdenite collecting agent there is good collecting and dispersion to imitate
Fruit, selectivity is good, property is stablized, and can efficiently floatingly select molybdenite；And pyrite inhibitor has good fluidity, dosage
Less, the features such as selectivity is good, restraint is strong；Copper cleaner tailings is concentrated by modes such as concentrator, centrifuges simultaneously, is taken off
In addition to ore pulp moisture and the floating agent of mineral surfaces, to expand the sex differernce that swims between mineral, for subsequent flotation point
From creating good condition.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (7)
1. a kind of method for recycling molybdenite from copper cleaner tailings, which is characterized in that the described method includes:
Copper cleaner tailings ore pulp to be processed is concentrated step 1 by concentrator, centrifuge, makes the mass concentration of ore pulp
Reach 65%~75%, removes remaining floating agent in moisture and ore pulp；
Step 2 adds water to size mixing, and is stirred in agitator into the ore pulp after concentration；
Step 2 treated ore pulp is introduced roughing flotation unit by step 3, sequentially sequentially adds regulator, pyrite
Inhibitor, molybdenite collecting agent and foaming agent, and it is stirred roughing respectively, obtain molybdenum rough concentrate and rougher tailings；
Pyrite inhibitor BK-YS and molybdenite collecting agent BK-PM is added in step 4 into the obtained rougher tailings of step 3 again
Scan for 1~2 time, makes to scan rear tailing containing molybdenum < 0.03%, and molybdenum distributive law < 25%；
Pyrite inhibitor BK-YS progress primary cleaning operation is added into the obtained molybdenum rough concentrate of step 3 for step 5, by one
Secondary concentrate after the assignment is regrinded, until fineness is that -25um grade accounts for 70%~80%, then again after selected 3~6 times
Obtain molybdenum concentrate.
2. the method for molybdenite is recycled from copper cleaner tailings according to claim 1, which is characterized in that in step 2, add
Mass percent concentration after water is sized mixing is 20%~25%, and stir 3~5 minutes in agitator, revolving speed for 1500~
2000r/min。
3. the method for molybdenite is recycled from copper cleaner tailings according to claim 1, which is characterized in that in step 3, institute
The regulator of addition is calgon, and dosage is 100~300g/t to mine；
The pyrite inhibitor being added is BK-YS, and dosage is 100~300g/t to mine；
The molybdenite collecting agent being added is BK-PM, and dosage is 30~50g/t to mine；
The foaming agent being added is No. 2 oil, and dosage is 10~30g/t to mine.
4. the method for molybdenite is recycled from copper cleaner tailings according to claim 1, which is characterized in that in step 4, often
The secondary dosage scanned are as follows:
Pyrite inhibitor BK-YS is 50~100g/t to mine；
Molybdenite collecting agent BK-PM is 10~20g/t to mine.
5. the method for molybdenite is recycled from copper cleaner tailings according to claim 1, which is characterized in that in steps of 5, institute
The pyrite inhibitor BK-YS dosage of addition is 20~50g/t to mine.
6. the method for molybdenite is recycled from copper cleaner tailings according to claim 1, which is characterized in that
The molybdenite collecting agent BK-PM includes kerosene 40%~60%, diesel oil 30%~40%, alkyl phenol by mass fraction
Polyglycol ether 10%~20%.
7. the method for molybdenite is recycled from copper cleaner tailings according to claim 1, which is characterized in that
The pyrite inhibitor BK-YS includes sodium thioglycolate 60%~80%, tetraethylenepentamine 20% by mass fraction
~40%.
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| CN111515026A (en) * | 2020-05-12 | 2020-08-11 | 江西铜业集团有限公司 | Method for recovering micro-fine particle pyrite from sulfur-containing slime tailings |
| CN114618686A (en) * | 2022-02-16 | 2022-06-14 | 武汉工程大学 | Application of n-butyl thiophosphoric triamide and flotation method of micro-fine molybdenite |
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