CN108525841B - Copper ore associated molybdenum sorting method - Google Patents
Copper ore associated molybdenum sorting method Download PDFInfo
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- CN108525841B CN108525841B CN201810200394.3A CN201810200394A CN108525841B CN 108525841 B CN108525841 B CN 108525841B CN 201810200394 A CN201810200394 A CN 201810200394A CN 108525841 B CN108525841 B CN 108525841B
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- molybdenum
- sulfur
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- minerals
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 96
- 239000011733 molybdenum Substances 0.000 title claims abstract description 96
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 56
- 239000010949 copper Substances 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 59
- 239000012141 concentrate Substances 0.000 claims abstract description 58
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 52
- 239000011707 mineral Substances 0.000 claims abstract description 52
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 claims abstract description 41
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 31
- 239000011593 sulfur Substances 0.000 claims abstract description 31
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 28
- PTISTKLWEJDJID-UHFFFAOYSA-N sulfanylidenemolybdenum Chemical compound [Mo]=S PTISTKLWEJDJID-UHFFFAOYSA-N 0.000 claims abstract description 26
- 230000008569 process Effects 0.000 claims abstract description 14
- 239000003112 inhibitor Substances 0.000 claims abstract description 11
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 10
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 10
- 239000002253 acid Substances 0.000 claims abstract description 6
- 230000018044 dehydration Effects 0.000 claims abstract description 6
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 229910001779 copper mineral Inorganic materials 0.000 claims abstract description 3
- 238000005188 flotation Methods 0.000 claims description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 229910052683 pyrite Inorganic materials 0.000 claims description 3
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 claims description 3
- 239000011028 pyrite Substances 0.000 claims description 3
- 239000006260 foam Substances 0.000 claims description 2
- 230000002000 scavenging effect Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 2
- 238000011084 recovery Methods 0.000 abstract description 22
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001608 iron mineral Inorganic materials 0.000 abstract description 3
- 230000004913 activation Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229910052961 molybdenite Inorganic materials 0.000 description 3
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- WUUZKBJEUBFVMV-UHFFFAOYSA-N copper molybdenum Chemical compound [Cu].[Mo] WUUZKBJEUBFVMV-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 238000001612 separation test Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a method for sorting copper ore associated molybdenum, which comprises the following steps: when copper-sulfur separation operation is carried out on the copper-sulfur rough concentrate containing molybdenum minerals obtained in the copper ore rough concentration process, the molybdenum minerals in the copper-sulfur rough concentrate are restrained in tailings of the copper-sulfur separation operation, and the copper minerals of the copper-sulfur separation operation still return to the copper-sulfur separation process; after dehydration and reagent removal are carried out on the tailings containing molybdenum minerals in the copper-sulfur separation operation, acid is added to adjust the pH value of the tailings, sulfur-selecting and molybdenum-selecting reagents are added to carry out sulfur-molybdenum concentration operation, and qualified sulfur concentrate containing molybdenum minerals is obtained; and performing molybdenum-sulfur separation operation on the qualified sulfur concentrate containing the molybdenum minerals, wherein the molybdenum-sulfur separation operation needs to add an inhibitor for inhibiting the sulfur-iron minerals and a molybdenum separation agent, and the molybdenum-sulfur separation operation is to obtain the qualified molybdenum concentrate and the qualified sulfur concentrate. The method can be used for separating copper and sulfur of copper ore, and is not limited by molybdenum ore recovery when the grade of copper concentrate is improved; and the molybdenum concentrate with higher recovery rate is obtained while the copper concentrate is obtained.
Description
Technical Field
The invention relates to non-ferrous metal ore dressing, in particular to a method for sorting copper ore associated molybdenum metal minerals.
Background
The molybdenite crystals have a hexagonal layered or plate-like structure, and are formed of an S-Mo-S structure along an interlayer van der Waals bond and an S-Mo covalent bond of an interlayer polarity, and the bonding force between layers is weak while the bonding force of the covalent bonds between layers is strong. Molybdenite is very easy to produce in the form of cracked sheets or plates between structures, which is why molybdenite is naturally highly floatable. However, the current sorting process technology of molybdenum minerals associated with copper ores basically enriches the molybdenum minerals in copper concentrate, and then performs copper-molybdenum separation on the copper concentrate containing the molybdenum minerals to obtain qualified molybdenum concentrate minerals. However, one or more stages of regrinding processes are generally arranged before the copper-sulfur separation operation, so that the proportion of S-Mo sections in the layers is increased, the floatability is reduced, and lime for inhibiting pyrite minerals is often added in most of the operations to improve the grade of copper concentrate; however, the lime has a strong inhibiting effect on molybdenum minerals, so that the recovery rate of the molybdenum minerals is seriously influenced; therefore, the contradiction between the improvement of the copper concentrate grade and the recovery of molybdenum ore is formed, so that the recovery rate of the copper ore associated with molybdenum in some ore dressing plants is only about 30 percent.
Disclosure of Invention
The invention aims to provide a method for sorting copper ore associated molybdenum.
The purpose of the invention is realized by the following technical scheme:
the method for sorting the accompanying molybdenum of the copper ore comprises the following steps:
A. when copper-sulfur separation operation is carried out on copper-sulfur rough concentrate containing molybdenum minerals obtained in the copper ore roughing process, the molybdenum minerals in the copper-sulfur rough concentrate are inhibited in tailings of the copper-sulfur separation operation to form tailings containing the molybdenum minerals;
B. after dehydration and reagent removal are carried out on the tailings containing molybdenum minerals in the copper-sulfur separation operation, acid is added to adjust the pH value of the tailings, sulfur-selecting and molybdenum-selecting reagents are added to carry out sulfur-molybdenum concentration operation, and qualified sulfur concentrate containing molybdenum minerals is obtained;
C. and performing molybdenum-sulfur separation operation on the qualified sulfur concentrate containing the molybdenum minerals, wherein the molybdenum-sulfur separation operation needs to add an inhibitor for inhibiting the sulfur-iron minerals and a molybdenum separation agent, and the molybdenum-sulfur separation operation is to obtain the qualified molybdenum concentrate and the qualified sulfur concentrate.
According to the technical scheme provided by the invention, the method for separating the copper ore associated with molybdenum is different from the conventional industrial technology, and the method for separating the copper ore associated with molybdenum can be used for separating copper and sulfur from the copper ore and improving the grade of copper concentrate without being limited by the recovery of molybdenum ore; the molybdenum concentrate with higher recovery rate can be obtained while the copper concentrate is obtained.
Drawings
FIG. 1 is a flow chart of an existing industrial process in a certain copper mine plant in Jiangxi;
FIG. 2 is a flow chart of copper fine tail deep concentration-activation sulfur separation-molybdenum sulfur separation in the embodiment of the invention.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The method for sorting the copper ore associated with molybdenum comprises the following preferred specific implementation modes:
the method comprises the following steps:
A. when copper-sulfur separation operation is carried out on copper-sulfur rough concentrate containing molybdenum minerals obtained in the copper ore roughing process, the molybdenum minerals in the copper-sulfur rough concentrate are inhibited in tailings of the copper-sulfur separation operation to form tailings containing the molybdenum minerals;
B. after dehydration and reagent removal are carried out on the tailings containing molybdenum minerals in the copper-sulfur separation operation, acid is added to adjust the pH value of the tailings, sulfur-selecting and molybdenum-selecting reagents are added to carry out sulfur-molybdenum concentration operation, and qualified sulfur concentrate containing molybdenum minerals is obtained;
C. and performing molybdenum-sulfur separation operation on the qualified sulfur concentrate containing the molybdenum minerals, wherein the molybdenum-sulfur separation operation needs to add an inhibitor for inhibiting the sulfur-iron minerals and a molybdenum separation agent, and the molybdenum-sulfur separation operation is to obtain the qualified molybdenum concentrate and the qualified sulfur concentrate.
In the step A, when the molybdenum minerals are inhibited in the tailings of the copper-sulfur separation operation, the adopted inhibitor is lime, and the dosage of the adopted inhibitor ensures that the pH value of the operation of the process is between 9 and 12.
In the step A, the copper ore roughing flow adopts a copper and molybdenum mixed flotation flow or a copper priority flotation flow.
In the step B, after dehydration and reagent removal are carried out on the tailings of the copper-sulfur separation operation, acid is added to adjust the pH value of the tailings in the sulfur-molybdenum concentration operation to be 3-9; the qualified sulfur concentrate is standard sulfur concentrate or high-grade sulfur concentrate with the grade higher than 45%.
And in the step C, when the qualified sulfur concentrate containing molybdenum minerals is subjected to molybdenum-sulfur separation operation, the inhibitor for inhibiting the pyrite minerals is added into the qualified sulfur concentrate and is an organic matter or an inorganic matter.
The step A comprises the following steps:
a1, in the copper-sulfur separation process flow in the prior art, molybdenum minerals are inhibited in tailings of copper-sulfur separation operation, and tailings containing molybdenum minerals are formed;
a2, sorting the selected tailings or scavenging foam concentrate of the copper-sulfur separation operation independently, inhibiting molybdenum minerals in the operation from the tailings of the sorting operation to form tailings containing molybdenum minerals, and returning the copper minerals separated and sorted independently to the copper-sulfur separation operation flow.
The method for sorting the copper ore associated molybdenum can be used for separating copper and sulfur of the copper ore and improving the grade of copper concentrate without being limited by the recovery of the molybdenum ore; the molybdenum concentrate with higher recovery rate can be obtained while the copper concentrate is obtained.
The invention has the beneficial effects that:
aiming at the problems of low comprehensive recovery rate of molybdenum, high cost of copper-molybdenum separation, low economic benefit and the like in the existing ore dressing process of copper sulfide associated with molybdenum in most of mines, the invention innovatively provides reverse flotation of copper-sulfur separation molybdenum, and then carries out deep concentration-molybdenum-sulfur separation process on concentrated tailings, so that the comprehensive recovery rate of molybdenum can be greatly improved, the grade and recovery rate of main target mineral copper are not influenced, and the problem of low recovery rate of molybdenum in most of mine processed molybdenum-containing copper ores is solved.
The scheme provided by the invention has the main advantages that:
(1) the process adopted by the invention creatively inhibits the molybdenum minerals in the tailings in a reverse direction, so that the trend of the molybdenum minerals is communicated with the sulfur concentrate, and the main contradiction that the copper grade is reduced when the recovery rate of the molybdenum is improved in the conventional thought is avoided.
(2) The process adopted by the invention only needs to change the medicament dosage or medicament system in the operation flow and does not change the structure of the main flow.
(3) The reverse inhibition of the molybdenum concentrate (reverse flotation) does not mean that the operation pH is increased or the recovery rate of the copper concentrate or the associated rare and precious metals (such as gold, silver and the like) is influenced, and the aim of reverse flotation of molybdenum can be effectively fulfilled by adding the high-selectivity inhibitor, so that the main beneficiation indexes of the existing process cannot be influenced.
The specific embodiment is as follows:
referring to fig. 1, an industrial flow chart of a copper ore plant in the west and the river is shown, and according to the industrial flow and field indexes of copper ore (associated molybdenum) in the west and the river shown in the figure, the method specifically comprises the following steps:
the principle process of reverse flotation, activation concentration of concentrated tailings and molybdenum-sulfur separation is carried out on the two-stage copper-sulfur separation of a certain copper ore concentration plant. As can be seen from the flow chart, in the two-stage copper-sulfur separation operation in the current process, a large amount of molybdenum minerals are circulated to the copper-sulfur separation roughing in the copper fine tailings, and the current practical indexes on site show that a large amount of molybdenum (163.99% of the amount of the molybdenum minerals) is finally inhibited and lost to the tailings in the operation circulation under the action of lime, so that the actual recovery rate of the molybdenum is greatly reduced (31.56%).
In summary, if the tailing sequence of the copper concentration operation is disconnected and the concentration tailings are separately subjected to copper-sulfur separation, the copper concentrate grade is improved as much as possible under the condition of not reducing the recovery rate of associated metals in principle, and meanwhile, molybdenum minerals are inhibited in the tailings as much as possible; carrying out a tailing molybdenum-sulfur activation and selection test research and a molybdenum-sulfur separation test research; the recovery rate of molybdenum in the whole two-stage copper-sulfur separation operation can be improved, and the specific flow is shown in fig. 2:
in the flow shown in fig. 2, molybdenum-sulfur tailings inhibited by lime in the copper concentrate tailings are subjected to an activation concentration-molybdenum-sulfur separation principle flow to obtain a molybdenum concentrate and a sulfur concentrate, so that the recovery rate of molybdenum minerals can be greatly increased, and in an activation flotation flow unit and a molybdenum-sulfur separation flow unit, a specific medicament formula with low cost and high efficiency can assist in smooth flotation operation. The comprehensive recovery rate of the second-stage molybdenum is improved from 30.03% to 62.31%.
In conclusion, the technical scheme provided by the invention has the advantages of high molybdenum recovery rate, solves the contradiction between the improvement of copper concentrate grade by copper ore associated with molybdenum ore and the recovery of molybdenum ore, and has extremely high practical value and economic value.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A method for separating associated molybdenum from copper ore is characterized by comprising the following steps:
A. when copper-sulfur separation operation is carried out on copper-sulfur rough concentrate containing molybdenum minerals obtained in the copper ore roughing process, the molybdenum minerals in the copper-sulfur rough concentrate are inhibited in tailings of the copper-sulfur separation operation to form tailings containing the molybdenum minerals;
B. after dehydration and reagent removal are carried out on the tailings containing molybdenum minerals in the copper-sulfur separation operation, acid is added to adjust the pH value of the tailings, sulfur-selecting and molybdenum-selecting reagents are added to carry out sulfur-molybdenum concentration operation, and qualified sulfur concentrate containing molybdenum minerals is obtained;
C. performing molybdenum-sulfur separation operation on qualified sulfur concentrate containing molybdenum minerals, wherein the molybdenum-sulfur separation operation needs to add an inhibitor for inhibiting a ferro-sulfur mineral and a molybdenum separation agent, and the molybdenum-sulfur separation operation is to obtain the qualified molybdenum concentrate and the qualified sulfur concentrate;
in the step A, when molybdenum minerals are inhibited in tailings of copper-sulfur separation operation, the adopted inhibitor is lime, and the dosage of the adopted inhibitor ensures that the operation pH value of the process is between 9 and 12;
in the step A, the copper ore roughing flow adopts a copper and molybdenum mixed flotation flow or a copper priority flotation flow;
the step A comprises the following steps:
a1, in the copper-sulfur separation process flow in the prior art, molybdenum minerals are inhibited in tailings of copper-sulfur separation operation, and tailings containing molybdenum minerals are formed;
a2, sorting the selected tailings or scavenging foam concentrate of the copper-sulfur separation operation independently, inhibiting molybdenum minerals in the operation from the tailings of the sorting operation to form tailings containing molybdenum minerals, and returning the copper minerals separated and sorted independently to the copper-sulfur separation operation flow.
2. The method for separating molybdenum associated with copper ore according to claim 1, wherein in the step B, after dehydration and reagent removal are carried out on the tailings of the copper-sulfur separation operation, acid is added to adjust the pH value of the tailings in the sulfur-molybdenum separation operation to be between 3 and 9; the qualified sulfur concentrate is standard sulfur concentrate or high-grade sulfur concentrate with the grade higher than 45%.
3. The method for separating molybdenum associated with copper ore according to claim 2, wherein in the step C, when the qualified sulfur concentrate containing molybdenum ore is subjected to molybdenum-sulfur separation, an inhibitor for inhibiting pyrite mineral is added thereto and the molybdenum-sulfur concentrate is an organic substance or an inorganic substance.
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| CN109701753A (en) * | 2019-01-03 | 2019-05-03 | 北京矿冶科技集团有限公司 | A kind of inhibitor and beneficiation method of high-sulfur hard-processing copper sulfur ores |
| CN114405684A (en) * | 2021-12-22 | 2022-04-29 | 金堆城钼业股份有限公司 | Method for recleaning micro-fine particle molybdenum concentration tailings |
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| US3426896A (en) * | 1965-08-20 | 1969-02-11 | Armour Ind Chem Co | Flotation of bulk concentrates of molybdenum and copper sulfide minerals and separation thereof |
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| CN105268558A (en) * | 2015-08-19 | 2016-01-27 | 江西理工大学 | Method for comprehensively utilizing associated valuable components of high-sulfur and low-copper complex copper sulphide ore |
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2018
- 2018-03-12 CN CN201810200394.3A patent/CN108525841B/en active Active
Patent Citations (6)
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|---|---|---|---|---|
| US3426896A (en) * | 1965-08-20 | 1969-02-11 | Armour Ind Chem Co | Flotation of bulk concentrates of molybdenum and copper sulfide minerals and separation thereof |
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| CN105268558A (en) * | 2015-08-19 | 2016-01-27 | 江西理工大学 | Method for comprehensively utilizing associated valuable components of high-sulfur and low-copper complex copper sulphide ore |
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