CN115025888B - Molybdenite inhibition protective agent and molybdenum ore dressing method containing easily-floated layered silicate gangue minerals - Google Patents

Molybdenite inhibition protective agent and molybdenum ore dressing method containing easily-floated layered silicate gangue minerals Download PDF

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CN115025888B
CN115025888B CN202210881159.3A CN202210881159A CN115025888B CN 115025888 B CN115025888 B CN 115025888B CN 202210881159 A CN202210881159 A CN 202210881159A CN 115025888 B CN115025888 B CN 115025888B
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molybdenite
molybdenum
concentration
component
layered silicate
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CN115025888A (en
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孙志健
王立刚
李成必
朱阳戈
吴熙群
赵志强
于志超
叶岳华
田祎兰
刘万峰
胡志强
万丽
高希宇
陈旭波
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BGRIMM Technology Group Co Ltd
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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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/018—Mixtures of inorganic and organic compounds
    • 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
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Abstract

The invention provides a molybdenite inhibition protective agent and a molybdenum ore dressing method for a gangue mineral containing easily-floating layered silicate, and particularly relates to the technical field of ore dressing. The molybdenite inhibition protective agent comprises a component A, a component B and a component C; the component A comprises at least one of 2-mercaptobenzothiazole, 2-mercaptobenzimidazole and 1-phenyl-2-mercaptobenzimidazole; the component B comprises at least one of sodium sulfide, sodium hydrosulfide and sodium persulfate; the component C comprises at least one of ammonia water, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate and ammonium carbonate. The molybdenite inhibition protective agent provided by the invention has the advantages that the A component, the B component and the C component are adsorbed on the surface of the molybdenite through chemical and physical effects to form a layer of protective wall of the molybdenite, the adsorption of the easily-floating layered silicate mineral inhibitor on the surface of the molybdenite is prevented, and the molybdenite can be easily floated in the follow-up process.

Description

Molybdenite inhibition protective agent and molybdenum ore dressing method containing easily-floated layered silicate gangue minerals
Technical Field
The invention relates to the technical field of mineral separation, in particular to a molybdenite inhibition protective agent and a molybdenum ore separation method of gangue minerals containing easily-floating layered silicate.
Background
At present, molybdenum ore dressing indexes of gangue minerals containing easily-floating layered silicate are poor. The reason is that the crystal mechanism of the easily floating layered silicate gangue mineral represented by talcum is similar to the crystal structure of molybdenite, and the crushed and ground ore shows natural floatability similar to that of molybdenite and even better than that of molybdenite. In addition, because gangue minerals of the type are easy to mud in ore grinding, the gangue minerals are easy to float along with foam clamp strips, and fine particles form a cover for molybdenite, so that the action of flotation agents and the molybdenite is influenced.
The layered silicate minerals include: talc, serpentine, chlorite, mica, pyrophyllite, kaolinite, vermiculite, etc. The problems encountered in the prior art for treating molybdenum ores containing readily floatable layered silicate gangue minerals are as follows:
(1) Because of the good natural floatability of molybdenite, part of molybdenite and easily floating layered silicate gangue minerals are intergrowth, so that molybdenum is lost in gangue removal. If backwater is used in the production, the loss of molybdenum is exacerbated.
(2) Until now, there is no layered silicate gangue mineral inhibitor which does not affect molybdenite, and molybdenite is inhibited after the inhibitor is excessively added.
(3) The metallurgical treatment cost of low-grade molybdenum concentrate containing the easily-floated phyllosilicate mineral is high, and the deep processing application of molybdenum is limited.
(4) The natural floatability of molybdenite is good, the inhibition difficulty is high, and in addition, the easily floating layered silicate mineral is easy to mud and adsorb medicament, so that the consumption of the medicament for inhibiting molybdenite is high, and the cost is high. After the molybdenite is inhibited, floatability is poor, mineral separation indexes are poor, special treatment is needed during recovery, and mineral separation cost is increased.
(5) The efficiency of removing the easily floating layered silicate gangue minerals by gravity separation is not high.
The existing molybdenite containing the easily-floated phyllosilicate gangue minerals has poor mineral separation effect, low mineral separation recovery rate and poor concentrate quality, and seriously affects the economic benefit of production enterprises.
In view of this, the present invention has been made.
Disclosure of Invention
The invention aims to provide an molybdenite inhibition protective agent, and aims to solve the technical problems of poor ore dressing and separation effects, low ore dressing recovery rate and poor ore concentrate quality of the existing molybdenite containing easily-floated layered silicate gangue minerals.
In order to solve the technical problems, the invention adopts the following technical scheme:
the first aspect of the invention provides an molybdenite inhibition protective agent, which comprises an A component, a B component and a C component;
the component A comprises at least one of 2-mercaptobenzothiazole, 2-mercaptophenylimidazole and 1-phenyl-2-mercaptophenylimidazole.
The B component comprises at least one of sodium sulfide, sodium hydrosulfide and sodium persulfate.
The component C comprises at least one of ammonia water, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate and ammonium carbonate.
Optionally, the composition comprises 20-40% of A component, 10-20% of B component and 40-70% of C component in percentage by mass.
Preferably, the adhesive comprises 25-35% of A component, 12-18% of B component and 45-65% of C component in percentage by mass.
The second aspect of the invention provides a method for beneficiating molybdenum ore containing easily floatable layered silicate gangue minerals, comprising the steps of:
step a: preparing molybdenum ore containing the easily-floating layered silicate gangue minerals into ore pulp, and adding a foaming agent into the ore pulp to collect the easily-floating layered silicate gangue to obtain a gangue removal product and gangue removal tailings;
step b: removing gangue products, regrinding, adding the molybdenite inhibition and protection agent provided by the first aspect, uniformly mixing, adding water glass and the layered silicate gangue inhibition agent, uniformly mixing, finally adding the molybdenite collecting agent and the foaming agent, uniformly mixing, performing molybdenite flotation recovery, enabling flotation foam to enter a concentration operation, and enabling flotation underflow to enter a separation scavenging operation;
step c: b, adding the molybdenite inhibition and protection agent and the layered silicate gangue mineral inhibitor provided in the first aspect into the flotation foam obtained in the step b, and uniformly mixing; then adding molybdenite collecting agent and foaming agent, uniformly mixing, and carrying out molybdenite concentration I-1, wherein the concentrate of the concentration I-1 is subjected to concentration for 4-8 times to obtain molybdenum concentrate 1, the underflow of the concentration operation is concentration tailings, and the concentration tailings sequentially return to the previous concentration operation;
step d: adding water glass, molybdenite collecting agent and foaming agent into the gangue-removed tailings obtained in the step a, uniformly mixing the mixture to perform molybdenum roughing operation to obtain flotation foam and flotation underflow in the molybdenum roughing operation, enabling the flotation underflow to enter scavenging operation, obtaining scavenging operation underflow through 1-4 times of scavenging operation, obtaining tailings 2 from the bottom flow in the last scavenging operation, and returning the foam in the scavenging operation to the last operation;
step e: d, adding water glass into flotation foam obtained in the step d, uniformly mixing, and then carrying out pre-concentration 1 operation, wherein the obtained pre-concentration 1 foam is subjected to pre-concentration operation for 1-2 times again to obtain molybdenum rough concentrate and pre-concentration operation bottom flow, the pre-concentration operation bottom flow returns to the previous pre-concentration operation, and the pre-concentration 1 operation bottom flow returns to the step a;
step f: grinding the molybdenum rough concentrate obtained in the step e, adding water glass, a sulphide ore inhibitor and a molybdenite collecting agent, uniformly mixing, carrying out concentration II-1 operation, allowing foam of the concentration II-1 operation to enter the next concentration operation, and carrying out concentration for 3-8 times to obtain molybdenum concentrate 2; the underflow of the fine cleaning II-1 operation enters the molybdenum cleaning 1 operation, the underflow of the molybdenum cleaning 1 operation sequentially enters the next fine cleaning operation, the number of fine cleaning operations is 2-5, finally tailings 3 are obtained, the foam of the fine cleaning operation sequentially returns to the previous fine cleaning operation, and the foam of the fine cleaning 1 operation returns to the fine cleaning II-1 operation.
Optionally, the mass content of the easily-floating layered silicate gangue mineral in the molybdenum ore containing the easily-floating layered silicate gangue mineral is 3-60%.
Optionally, the foaming agent comprises at least one of an alcohol foaming agent, an ether foaming agent, and a phenolic foaming agent.
Preferably, the alcohol foaming agent comprises 4-methyl-2-pentanol and/or pinitol oil.
Optionally, in step c, the layered silicate gangue mineral inhibitor comprises at least one of carboxymethyl cellulose, lignin, guar gum, and tannin extract.
Preferably, the molybdenite collector includes a nonpolar oil.
Preferably, the nonpolar oil includes at least one of kerosene, diesel oil, and transformer oil.
Optionally, in step f, the sulphide ore inhibitor comprises at least one of sodium sulphide, sodium hydrosulphide, thioglycollic acid, sodium thioglycollate and sodium cyanide.
Optionally, in the step a, the fineness of the ore pulp is-0.074 mm and accounts for 55% -90%.
Preferably, the concentration of the pulp is 25% -40%.
Optionally, in the step b, the fineness of the regrind gangue removal product is-0.045 mm and accounts for 80% -98%.
Preferably, in the step f, the fineness of the molybdenum roughing concentrate after regrinding is-0.038 mm and accounts for 80-98%.
Compared with the prior art, the invention has at least the following beneficial effects:
the molybdenite inhibition protective agent provided by the invention has the advantages that the heavy metal ions in the ore pulp can be precipitated by the component A, the component B and the component B in the component C, so that the heavy metal ions and the component A are prevented from reacting to form precipitates, and the effect of the component A is influenced. The mercapto group in the component A acts on the surface of the molybdenite and is adsorbed on the surface of the molybdenite, the other end of the component A is of a ring structure, larger steric hindrance is formed, a layer of 'protection wall' of the molybdenite mineral is formed, the easily-floating layered silicate mineral inhibitor is prevented from being adsorbed on the surface of the molybdenite, and the molybdenite can be easily floated in the follow-up process.
The molybdenum ore dressing method for the easily-floating layered silicate gangue mineral provided by the invention adopts the ore dressing process flow for removing the easily-floating layered silicate gangue mineral in advance, then recovering and removing molybdenum in the gangue in a reinforced way, and generating high-quality molybdenum concentrate by the main flow. After the easily-floated layered silicate gangue minerals are effectively removed, the interference of the easily-floated layered silicate gangue minerals on the molybdenite flotation is eliminated, and the flotation index of the molybdenite in the flotation main flow is ensured. The molybdenite inhibition and protection agent is added into the removed gangue, then the inhibitor of the layered silicate gangue mineral is added to effectively inhibit the layered silicate mineral, so that the floatability of the molybdenite and the floatability of the layered silicate mineral are different, and then the molybdenite which is inhibited and protected is recovered through floatation, so that the high-efficiency recovery of the part of molybdenum is realized. Solves the problem of unstable ore dressing flow, improves the recovery rate and the concentrate quality, and can be directly recycled without treatment. The invention obviously improves the grade of the molybdenum concentrate, improves the recovery rate of molybdenum by 10 to 30 percent and improves the utilization rate of refractory molybdenum resources.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of a process for beneficiating a gangue mineral molybdenum ore containing easily floatable layered silicate as described in example 7.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the prior art, the technology for treating molybdenum ore containing the easily-floating layered silicate gangue mineral is generally as follows: (1) Removing the easily-floating layered silicate minerals in advance and then carrying out molybdenite flotation; (2) inhibiting the flotating phyllosilicate mineral from flotating molybdenite; (3) The molybdenite, the easily-floated layered silicate gangue minerals and the like can float, and after the relatively high-grade mixed concentrate is obtained, special method separation or metallurgical separation is adopted; (4) Inhibiting molybdenite flotation to remove easily-floating layered silicate minerals, and then activating flotation to recover molybdenite; (5) And (3) carrying out molybdenite flotation after the easily-floated layered silicate minerals are removed through gravity separation.
The gravity separation is a physical separation method, has an effective separation particle size range and a density range, the molybdenite is generally fine in embedded granularity, the density of an aggregate of the molybdenite and other gangue is not obviously different from that of the easily-floated layered silicate gangue, and a large amount of fine-grained minerals are difficult to separate in gravity separation, so that the gravity separation efficiency is low.
In addition, the fluctuation of the easily-floated layered silicate gangue minerals in the raw ores has high requirements on the addition amount of the medicaments, the addition amount is insufficient to inhibit the easily-floated layered silicate gangue minerals, and the flotation of excessive molybdenite is inhibited. The amount of the easily-floated layered silicate gangue minerals in the actual ore is far greater than that of molybdenite, and the addition amount of the inhibitor is difficult to accurately adjust according to the change of the easily-floated layered silicate gangue minerals in the actual production.
The first aspect of the invention provides an molybdenite inhibition protective agent, which comprises an A component, a B component and a C component;
the component A comprises at least one of 2-mercaptobenzothiazole, 2-mercaptophenylimidazole and 1-phenyl-2-mercaptophenylimidazole.
The B component comprises at least one of sodium sulfide, sodium hydrosulfide and sodium persulfate.
The component C comprises at least one of ammonia water, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate and ammonium carbonate.
The molybdenite inhibition protective agent provided by the invention has the advantages that the A component, the B component and the C component are adsorbed on the surface of the molybdenite through chemical and physical effects to form a layer of protective wall of the molybdenite, the adsorption of the easily-floating layered silicate mineral inhibitor on the surface of the molybdenite is prevented, and the molybdenite can be easily floated in the follow-up process.
Optionally, the molybdenite inhibition protective agent comprises 20-40% of A component, 10-20% of B component and 40-70% of C component in percentage by mass.
In some embodiments of the invention, the mass percent of the a component in the molybdenite inhibiting protective agent is typically, but not limited to, 20%, 25%, 30%, 35% or 40%; the mass percent of the B component is typically, but not limited to, 10%, 12%, 14%, 16%, 18% or 20%; the mass percent of the C component is typically, but not limited to, 40%, 45%, 50%, 55%, 60% or 70%.
Preferably, the molybdenite inhibiting and protecting agent comprises 25-35% of A component, 12-18% of B component and 45-65% of C component in percentage by mass.
The second aspect of the invention provides a method for beneficiating molybdenum ore containing easily floatable layered silicate gangue minerals, comprising the steps of:
step a: preparing molybdenum ore containing the easily-floating layered silicate gangue mineral into ore pulp, and adding a foaming agent into the ore pulp to collect the easily-floating layered silicate gangue, thereby obtaining a gangue removal product and gangue removal tailings.
Optionally, the mass content of the easily-floating layered silicate gangue mineral in the molybdenum ore containing the easily-floating layered silicate gangue mineral is 3-60%. The quality content of the easily-floating layered silicate vein stone mineral is 3-60%, and the beneficiation method provided by the invention can achieve better separation efficiency and higher molybdenum recovery rate.
When the gangue minerals of the easily-floating layered silicate are removed in actual production, molybdenum can be entrained to float upwards, and especially when backwater is used, the loss of molybdenum can be increased by residual medicament. The molybdenum in the gangue is removed by the beneficiation method, so that the molybdenum in the gangue is effectively recovered, and the backwater can be directly used without treatment.
Optionally, in the step a, the fineness of the ore pulp is-0.074 mm and accounts for 55% -90%.
Preferably, the concentration of the pulp is 25% -40%.
In some embodiments of the invention, the pulp is typically, but not limited to, 25%, 30%, 35% or 40% in concentration.
Optionally, the foaming agent comprises at least one of an alcohol foaming agent, an ether foaming agent, and a phenolic foaming agent.
Preferably, the alcohol foaming agent comprises 4-methyl-2-pentanol and/or pinitol oil.
In some embodiments of the invention, the foaming agent is added in an amount of 1 to 100g per ton of raw ore.
Step b: removing gangue products, regrinding, adding the molybdenite inhibition and protection agent provided by the first aspect, uniformly mixing, adding water glass and the layered silicate gangue mineral inhibitor, uniformly mixing, finally adding the molybdenite collecting agent and the foaming agent, uniformly mixing, performing molybdenite flotation recovery, enabling flotation foam to enter a concentration operation, and enabling flotation underflow to enter a separation scavenging operation;
optionally, the addition amount of the molybdenite inhibiting protective agent is 5-100 g/ton of raw ore, the addition amount of the water glass is 1-2000 g/ton of raw ore, and the addition amount of the layered silicate gangue mineral inhibitor is 20-2000 g/ton of raw ore.
Preferably, the molybdenite collector includes a nonpolar oil.
Preferably, the nonpolar oil includes at least one of kerosene, diesel oil, and transformer oil.
Optionally, the addition amount of the molybdenite collecting agent is 30-100 g/ton of raw ore.
Optionally, in the step b, the addition amount of the foaming agent is 1-30 g/ton of raw ore.
Optionally, in the step b, the fineness of the regrind gangue removal product is-0.045 mm and accounts for 80% -98%.
Step c: b, adding the molybdenite inhibition and protection agent and the layered silicate gangue mineral inhibitor provided in the first aspect into the flotation foam obtained in the step b, and uniformly mixing; then adding molybdenite collecting agent and foaming agent, uniformly mixing, and carrying out molybdenite concentration I-1, wherein the concentrate of the concentration I-1 is subjected to concentration for 4-8 times to obtain molybdenum concentrate 1, the underflow of the concentration operation is concentration tailings, and the concentration tailings sequentially return to the previous concentration operation;
optionally, in step c, the layered silicate gangue mineral inhibitor comprises at least one of carboxymethyl cellulose, lignin, guar gum, and tannin extract.
Optionally, the layered silicate gangue mineral inhibitor is added in an amount of 1 to 100 g/ton of raw ore.
Optionally, in the step c, the addition amount of the molybdenite inhibiting protective agent is 1-50 g/ton of raw ore, the addition amount of the molybdenite collecting agent is 5-50 g/ton of raw ore, and the addition amount of the foaming agent is 1-10 g/ton of raw ore.
Step d: adding water glass, molybdenite collecting agent and foaming agent into the gangue-removed tailings obtained in the step a, uniformly mixing the mixture to perform molybdenum roughing operation to obtain flotation foam and flotation underflow in the molybdenum roughing operation, enabling the flotation underflow to enter scavenging operation, obtaining scavenging operation underflow through 1-4 times of scavenging operation, obtaining tailings 2 from the underflow in the last scavenging operation, and returning the foam in the scavenging operation to the last operation.
Optionally, in the step d, the addition amount of the water glass is 1-10000 g/ton of raw ore, the addition amount of the molybdenite collecting agent is 80-200 g/ton of raw ore, and the addition amount of the foaming agent is 10-150 g/ton of raw ore.
Step e: d, adding water glass into the flotation foam of the molybdenum roughing operation, uniformly mixing, performing pre-concentration 1 operation, performing 1-2 times of pre-concentration operation on the obtained pre-concentration 1 foam again to obtain molybdenum roughing concentrate and pre-concentration operation underflow, returning the pre-concentration operation underflow to the previous pre-concentration operation, and returning the pre-concentration 1 operation underflow to the step a.
Optionally, in the step e, the adding amount of the water glass is 1-2000 g/ton of raw ore.
Step f: grinding the molybdenum rough concentrate obtained in the step e, adding water glass, a sulphide ore inhibitor and a molybdenite collecting agent, uniformly mixing, carrying out concentration II-1 operation, allowing foam of the concentration II-1 operation to enter the next concentration operation, and carrying out concentration for 3-8 times to obtain molybdenum concentrate 2; the underflow of the fine cleaning II-1 operation enters the molybdenum cleaning 1 operation, the underflow of the molybdenum cleaning 1 operation sequentially enters the next fine cleaning operation, the number of fine cleaning operations is 2-5, finally tailings 3 are obtained, the foam of the fine cleaning operation sequentially returns to the previous fine cleaning operation, and the foam of the fine cleaning 1 operation returns to the fine cleaning II-1 operation.
Optionally, in the step f, the addition amount of the water glass is 1-500 g/ton of raw ore, the addition amount of the molybdenite collecting agent is 1-50 g/ton of raw ore, and the addition amount of the sulfide ore inhibitor is 1-50 g/ton of raw ore.
Optionally, in step f, the sulphide ore inhibitor comprises at least one of sodium sulphide, sodium hydrosulphide, thioglycollic acid, sodium thioglycollate and sodium cyanide.
Preferably, in the step f, the fineness of the molybdenum roughing concentrate after regrinding is-0.038 mm and accounts for 80-98%.
The molybdenum ore dressing method for the easily-floating layered silicate gangue mineral provided by the invention adopts the ore dressing process flow for removing the easily-floating layered silicate gangue mineral in advance, then recovering and removing molybdenum in the gangue in a reinforced way, and generating high-quality molybdenum concentrate by the main flow. After the easily-floated layered silicate gangue minerals are effectively removed, the interference of the easily-floated layered silicate gangue minerals on the molybdenite flotation is eliminated, and the flotation index of the molybdenite in the flotation main flow is ensured. The molybdenite inhibition and protection agent is added into the removed gangue, then the inhibitor of the layered silicate gangue mineral is added to effectively inhibit the layered silicate mineral, so that the floatability of the molybdenite and the floatability of the layered silicate mineral are different, and then the molybdenite which is inhibited and protected is recovered through floatation, so that the high-efficiency recovery of the part of molybdenum is realized. Solves the problem of unstable ore dressing flow, improves the recovery rate and the concentrate quality, and can be directly recycled without treatment.
Some embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict. The raw materials used in the present invention are commercially available unless otherwise specified.
Example 1
The embodiment provides an molybdenite inhibition protective agent, which comprises 25% of 2-mercaptobenzothiazole, 15% of sodium sulfide, 55% of ammonia water and 5% of sodium bicarbonate in percentage by mass.
Example 2
The embodiment provides an molybdenite inhibition protective agent, which comprises 30% of 2-mercaptobenzothiazole, 10% of sodium hydrosulfide, 50% of ammonia water and 10% of sodium bicarbonate by mass percent.
Example 3
The embodiment provides an molybdenite inhibition protective agent, which comprises 12% of 2-mercaptobenzothiazole, 18% of 1-phenyl-2-mercaptophenylimidazole, 20% of sodium sulfide, 45% of ammonia water and 5% of sodium hydroxide in percentage by mass.
Example 4
The embodiment provides an molybdenite inhibition protective agent, which comprises 40% of 2-mercaptophenyl imidazole, 20% of sodium persulfate and 40% of ammonia water in percentage by mass.
Example 5
The embodiment provides an molybdenite inhibition protective agent, which comprises 20% of 2-mercaptophenyl imidazole, 20% of sodium sulfide and 60% of ammonia water in percentage by mass.
Example 6
The embodiment provides an molybdenite inhibition protective agent, which comprises 16% of 2-mercaptobenzothiazole, 10% of 2-mercaptobenzimidazole, 20% of sodium hydrosulfide, 50% of ammonia water and 4% of sodium carbonate by mass percent.
Example 7
The embodiment provides a dressing method of molybdenum ore containing easily-floating layered silicate gangue mineral, wherein the molybdenum raw ore containing easily-floating layered silicate gangue mineral contains 0.17% of molybdenum, 27% of layered silicate gangue mineral (talcum: 18%, serpentine: 7%, chlorite: 2%) and SiO by mass percent 2 42.5％。
The beneficiation process is shown in fig. 1, and specifically comprises the following steps:
s1, grinding molybdenum ore containing the easily-floating layered silicate gangue mineral to obtain ore pulp with fineness of less than-0.074 mm and 80%, wherein the ore pulp concentration is 33%, and performing flotation removal operation on the easily-floating layered silicate gangue.
S2, floating and removing the easily-floating layered silicate gangue minerals: 60 g/ton of foaming agent 4-methyl-2-amyl alcohol (MIBC) of crude ore is added into the ore pulp obtained in the step S1 to be used as a collector of the easily floating layered silicate gangue. After fully stirring, the gangue mineral of the easily-floating layered silicate is removed for floatation, so that a gangue removal product and gangue removal tailings are obtained.
S3, removing molybdenite in gangue products, and carrying out enhanced recovery: regrinding and classifying the flotation foam obtained in the step S2, wherein regrinding fineness is 80% below-0.045 mm; adding 40 g/ton of the molybdenite suppressing protective agent provided in example 1 of raw ore to the ground product and stirring thoroughly; then 1000 g/ton of raw ore water glass and 50 g/ton of raw ore layered silicate gangue mineral inhibitor carboxymethyl cellulose (CMC) are added and fully stirred; then adding 50 g/ton of raw ore molybdenite collecting agent kerosene and 5 g/ton of raw ore foaming agent MIBC and stirring; and then carrying out flotation recovery of molybdenite in the removed product, enabling flotation foam to enter a concentration operation, and enabling flotation underflow to enter a separation scavenging operation. Through twice separation scavenging operation, the bottom flow of the separation scavenging operation II is tailings 1, and the foam of the separation scavenging operation is sequentially returned to the previous operation.
S4, sequentially adding 5 g/ton of the molybdenite inhibition protective agent provided in the embodiment 1 of the raw ore and 5 g/ton of the layered silicate gangue mineral inhibitor CMC into the flotation foam product obtained in the S2, and fully stirring; then 10 g/ton of raw ore molybdenite collecting agent kerosene is added and stirred for molybdenite concentration I-1. The concentrate of the concentration I-1 is subjected to concentration for 4 times to obtain molybdenum concentrate 1, wherein the bottom flow of the concentration operation is concentration tailings, and the concentration tailings are sequentially returned to the previous concentration operation.
S5, adding 2000 g/ton of raw ore water glass into the gangue removal tailings obtained in the step S2, and fully stirring; then 160 g/ton of raw ore molybdenite collecting agent kerosene and 40 g/ton of raw ore foaming agent MIBC are added and stirred; and then molybdenum roughing operation is carried out to obtain flotation foam and flotation underflow in the molybdenum roughing operation, the flotation underflow enters scavenging operation, and the underflow called tailings 2 in the scavenging operation is obtained after 2 scavenging operations. The foam of the scavenging operation is returned to the previous operation once.
S6, adding 1000 g/ton of raw mineral water glass into the roughing operation flotation foam obtained in the step S5, fully stirring, and then carrying out pre-concentration 1 operation, wherein the obtained pre-concentration 1 foam is subjected to 1 pre-concentration operation again to obtain molybdenum roughing concentrate and pre-concentration operation bottom flow, the pre-concentration operation bottom flow is returned to the previous pre-concentration operation, and the pre-concentration 1 operation bottom flow is returned to the molybdenum roughing operation described in the step S2.
S7, regrinding the molybdenum rough concentrate in the step S6, wherein the regrinding fineness is 80% below 0.038mm, sequentially adding 200 g/ton of water glass of raw ore, 10 g/ton of sodium thioglycolate serving as a sulphide ore inhibitor of the raw ore and 12 g/ton of collecting agent kerosene of the raw ore, stirring, carrying out ore pulp concentration II-1 operation, carrying out next concentration operation on the foam of the concentration II-1 operation, and carrying out concentration for 4 times to obtain molybdenum concentrate 2; the bottom flow of the fine cleaning II-1 operation enters the molybdenum fine cleaning 1 operation, the bottom flow of the fine cleaning 1 operation sequentially enters the fine cleaning operation of the next step, three fine cleaning operations are performed, the bottom flow of the final fine cleaning operation is tailings 3, the foam of the fine cleaning operation sequentially returns to the previous fine cleaning operation, and the foam of the fine cleaning 1 operation enters the fine cleaning II-1 operation.
Examples 8 to 12
The present embodiment provides a method for beneficiating a gangue mineral molybdenum ore containing an easily floatable layered silicate, which is different from embodiment 7 in that the molybdenite inhibition and protection agents provided in embodiments 2 to 6 are used as the molybdenite inhibition and protection agents respectively, and the other steps and raw materials are the same as embodiment 7, and are not repeated herein.
Example 13
The embodiment provides a beneficiation method for molybdenum ore of easily-floating layered silicate gangue minerals, which is different from embodiment 7 in that step S3 is not needed, the removed gangue minerals are not recovered with molybdenum any more, backwater is used in the process, the removal amount of the easily-floating layered silicate gangue minerals needs to be controlled by a certain amount, only 30% -60% of the amount of the easily-floating gangue minerals can be removed, the removal cannot be completely completed, and otherwise, the loss of molybdenum is too high. The subsequent molybdenum flotation steps S5 and S6 are added with a layered silicate gangue mineral inhibitor, the dosage of the inhibitor is 100g/t, and the rest steps are the same as those of the embodiment 7, and are not repeated.
Comparative example 1
This comparative example provides an molybdenite inhibiting protective agent, which is different from example 1 in that it does not contain 2-mercaptobenzothiazole, wherein the sodium sulfide content is 15%, sodium hydrosulfide 15%, ammonia water 55%, sodium bicarbonate 15%.
Comparative example 2
The comparative example provides an molybdenite inhibition protective agent, which comprises 40% of 2-mercaptobenzothiazole, 10% of sodium sulfide, 5% of sodium hydrosulfide and 45% of ethanol.
Comparative example 3
This comparative example provides an molybdenite inhibiting protective agent, which is different from example 1 in that it does not contain sodium sulfide and sodium hydrosulfide, wherein the mass percentage of 2-mercaptobenzothiazole is 20%, ammonia water 55%, sodium bicarbonate 25%.
Comparative examples 4 to 6
The comparative example provides a method for beneficiating a gangue mineral molybdenum ore containing an easily floatable layered silicate, which is different from example 7 in that the molybdenite inhibition and protection agents provided in comparative examples 1 to 3 are used respectively, and the rest steps and raw materials are the same as example 7, and are not repeated here.
Comparative example 7
The comparative example provides a beneficiation method for molybdenum ore containing easily floating layered silicate gangue minerals, which is different from example 7 in that no molybdenite inhibiting protective agent is added in the process, and the rest steps and raw materials are the same as example 7, and are not repeated here.
Test case
The molybdenum concentrates obtained in examples 7 to 13 and comparative examples 4 to 7 were measured and the data obtained are shown in Table 1.
Table 1 molybdenum concentrate molybdenum data sheet
Application example 1
Certain molybdenum ore contains 0.10 percent of molybdenum, 33.6 percent of easily floating layered silicate gangue mineral (talcum: 6.4 percent, serpentine 19.5 percent and chlorite 7.7 percent), and SiO 2 49.6%. The same test protocol as in example 7 was used to obtain molybdenum concentrate 1 containing 30.40% molybdenum, molybdenum concentrate 2 containing 51.20% molybdenum, a molybdenum recovery of 81.78% and a combined molybdenum concentrate grade of 46.31%.
The scheme of removing the easily floating layered silicate gangue by clear water is adopted, and the obtained molybdenum concentrate contains 46.56% of molybdenum and has a molybdenum recovery rate of 75.59%. The scheme of removing the easily floating layered silicate gangue mineral by adopting backwater is adopted, and the obtained molybdenum concentrate contains 43.21 percent of molybdenum, and the molybdenum recovery rate is 70.22 percent.
The reagent and the beneficiation method provided by the invention can be used for obtaining molybdenum concentrate with a grade close to that of a clear water scheme, and the molybdenum recovery rate is 6.2 percent higher; compared with a backwater scheme, the grade of the molybdenum concentrate is improved by 3 percentage points, and the recovery rate of molybdenum is improved by 11.5 percentage points.
Application example 2
Molybdenum ore contains 0.13% of molybdenum, 29.2% of easily floating layered silicate gangue mineral (talcum: 10.4%, serpentine 9.3%, chlorite 2.5%, kaolinite 4.9%, pyrophyllite 2.1%), siO 2 44.7%. The same test protocol as in example 7 was used to obtain molybdenum concentrate 1 containing 36.21% molybdenum, molybdenum concentrate 2 containing 49.23% molybdenum, a molybdenum recovery of 82.15% and a combined molybdenum concentrate grade of 46.97%.
The scheme of removing the easily floating layered silicate gangue mineral by clear water is adopted, and the obtained molybdenum concentrate contains 46.66 percent of molybdenum, and the molybdenum recovery rate is 74.14 percent. The scheme of removing the easily floating layered silicate gangue mineral by adopting backwater is adopted, and the obtained molybdenum concentrate contains 42.11 percent of molybdenum, and the molybdenum recovery rate is 69.69 percent.
The reagent and the beneficiation method provided by the invention can be used for obtaining molybdenum concentrate with a grade close to that of a clear water scheme, and the molybdenum recovery rate is 8 percent higher; compared with a backwater scheme, the grade of the molybdenum concentrate is improved by 4.8 percent, and the recovery rate of molybdenum is improved by 12.5 percent.
In conclusion, the embodiment of the invention can directly recycle the backwater, effectively solve the influence of the gangue minerals containing the easily-floated layered silicate on the molybdenum flotation index, improve the grade of molybdenum concentrate and the recovery rate of molybdenum, and greatly improve the economic benefit.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (15)

1. The molybdenite inhibition protective agent is characterized by comprising a component A, a component B and a component C;
the component A comprises at least one of 2-mercaptobenzothiazole, 2-mercaptophenylimidazole and 1-phenyl-2-mercaptophenylimidazole;
the component B comprises at least one of sodium sulfide, sodium hydrosulfide and sodium persulfate;
the component C comprises at least one of ammonia water, sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, potassium bicarbonate and ammonium carbonate.
2. The molybdenite inhibition protective agent according to claim 1, comprising 20-40% of a component A, 10-20% of a component B and 40-70% of a component C in percentage by mass.
3. The molybdenite inhibition protective agent according to claim 2, comprising, by mass, 25% -35% of a component, 12% -18% of a component and 45% -65% of a component C.
4. A method for beneficiating molybdenum ore containing easily-floated phyllosilicate gangue minerals, which is characterized by comprising the following steps:
step a: preparing molybdenum ore containing the easily-floating layered silicate gangue minerals into ore pulp, and adding a foaming agent into the ore pulp to collect the easily-floating layered silicate gangue to obtain a gangue removal product and gangue removal tailings;
step b: removing gangue products, regrinding, adding the molybdenite inhibition protective agent according to any one of claims 1-3, uniformly mixing, adding water glass and the layered silicate gangue mineral inhibitor, uniformly mixing, finally adding the molybdenite collecting agent and the foaming agent, uniformly mixing, performing molybdenite flotation recovery, enabling flotation foam to enter a concentration operation, and enabling flotation underflow to enter a separation scavenging operation;
step c: b, adding the molybdenite inhibition protective agent and the layered silicate gangue mineral inhibitor into the flotation foam obtained in the step b, and uniformly mixing; then adding molybdenite collecting agent and foaming agent, uniformly mixing, and carrying out molybdenite concentration I-1, wherein the concentrate of the concentration I-1 is subjected to concentration for 4-8 times to obtain molybdenum concentrate 1, the underflow of the concentration operation is concentration tailings, and the concentration tailings sequentially return to the previous concentration operation;
step d: adding water glass, molybdenite collecting agent and foaming agent into the gangue-removed tailings obtained in the step a, uniformly mixing the mixture to perform molybdenum roughing operation to obtain flotation foam and flotation underflow in the molybdenum roughing operation, enabling the flotation underflow to enter scavenging operation, obtaining scavenging operation underflow through 1-4 times of scavenging operation, obtaining tailings 2 from the bottom flow in the last scavenging operation, and returning the foam in the scavenging operation to the last operation;
step e: d, adding water glass into flotation foam obtained in the step d, uniformly mixing, and then carrying out pre-concentration 1 operation, wherein the obtained pre-concentration 1 foam is subjected to pre-concentration operation for 1-2 times again to obtain molybdenum rough concentrate and pre-concentration operation bottom flow, the pre-concentration operation bottom flow returns to the previous pre-concentration operation, and the pre-concentration 1 operation bottom flow returns to the step a;
step f: c, after regrinding the molybdenum rough concentrate obtained in the step e, adding water glass, a sulphide ore inhibitor and a molybdenite collecting agent, uniformly mixing, carrying out concentration II-1 operation, enabling foam obtained in the concentration II-1 operation to enter the next concentration operation, and carrying out concentration for 3-8 times to obtain molybdenum concentrate 2; the underflow of the fine cleaning II-1 operation enters the molybdenum cleaning 1 operation, the underflow of the molybdenum cleaning 1 operation sequentially enters the next fine cleaning operation, the number of fine cleaning operations is 2-5, finally tailings 3 are obtained, the foam of the fine cleaning operation sequentially returns to the previous fine cleaning operation, and the foam of the fine cleaning 1 operation returns to the fine cleaning II-1 operation.
5. The method for beneficiation of molybdenum ore according to claim 4, wherein the mass content of the easily floatable layered silicate gangue mineral in the molybdenum ore containing the easily floatable layered silicate gangue mineral is 3% -60%.
6. The method of beneficiation of molybdenum ore according to claim 4, wherein the foaming agent comprises at least one of an alcohol foaming agent, an ether foaming agent, and a phenolic foaming agent.
7. A molybdenum ore dressing method according to claim 6, wherein the alcohol foaming agent comprises 4-methyl-2-pentanol and/or pinitol oil.
8. The molybdenum ore beneficiation process according to claim 4, wherein in step c, the layered silicate gangue mineral inhibitor comprises at least one of carboxymethyl cellulose, lignin, guar gum, and tannin extract.
9. The molybdenum ore beneficiation method according to claim 4, wherein the molybdenite collector comprises a non-polar oil.
10. The molybdenum ore beneficiation method according to claim 9, wherein the nonpolar oil comprises at least one of kerosene, diesel oil, and transformer oil.
11. The molybdenum ore beneficiation method according to claim 4, wherein in step f, the sulfide ore inhibitor comprises at least one of sodium sulfide, sodium hydrosulfide, thioglycollic acid, sodium thioglycolate, and sodium cyanide.
12. A method of beneficiating molybdenum ore according to claim 4, wherein in step a, the fineness of the pulp is-0.074 mm and is 55% -90%.
13. The method of claim 4, wherein in step a, the concentration of the slurry is 25% -40%.
14. The method of beneficiation of molybdenum ore according to claim 4, wherein in the step b, the fineness of the regrind gangue removal product is-0.045 mm and 80% -98%.
15. The molybdenum ore dressing method according to claim 4, wherein in the step f, the fineness of the re-ground molybdenum roughing concentrate is-0.038 mm and 80% -98%.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102671769A (en) * 2012-05-14 2012-09-19 长沙矿冶研究院有限责任公司 Beneficiation method for flotation and recovery of molybdenum from easy-floating gangue refractory molybdenum ore
CN111298981A (en) * 2019-12-25 2020-06-19 北京矿冶科技集团有限公司 Molybdenum ore flotation collector and preparation method and beneficiation process thereof
CN112295728A (en) * 2020-10-20 2021-02-02 长沙矿山研究院有限责任公司 Talc inhibitor and efficient flotation method of talc-containing molybdenum ore
CN114471958A (en) * 2021-12-15 2022-05-13 金堆城钼业汝阳有限责任公司 Combined inhibitor for separating pyrite from complex molybdenite and separation method thereof

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080067112A1 (en) * 2006-09-20 2008-03-20 Kuhn Martin C Methods for the recovery of molybdenum

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102671769A (en) * 2012-05-14 2012-09-19 长沙矿冶研究院有限责任公司 Beneficiation method for flotation and recovery of molybdenum from easy-floating gangue refractory molybdenum ore
CN111298981A (en) * 2019-12-25 2020-06-19 北京矿冶科技集团有限公司 Molybdenum ore flotation collector and preparation method and beneficiation process thereof
CN112295728A (en) * 2020-10-20 2021-02-02 长沙矿山研究院有限责任公司 Talc inhibitor and efficient flotation method of talc-containing molybdenum ore
CN114471958A (en) * 2021-12-15 2022-05-13 金堆城钼业汝阳有限责任公司 Combined inhibitor for separating pyrite from complex molybdenite and separation method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
低品位钼矿的精选试验研究;张鸿波;张爽;彭源超;李悦;;应用能源技术(第08期);全文 *

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