CN114471960A - Beneficiation method of gold antimony ore - Google Patents
Beneficiation method of gold antimony ore Download PDFInfo
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- CN114471960A CN114471960A CN202210139942.2A CN202210139942A CN114471960A CN 114471960 A CN114471960 A CN 114471960A CN 202210139942 A CN202210139942 A CN 202210139942A CN 114471960 A CN114471960 A CN 114471960A
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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
- B03D1/02—Froth-flotation processes
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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
- B03D1/004—Organic compounds
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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
- B03D1/14—Flotation machines
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Abstract
The application provides a beneficiation method for gold antimony ore, and relates to the field of beneficiation. The beneficiation method of the gold antimony ore comprises the following steps: grinding raw ore containing the gold and antimony ore to obtain raw ore pulp; performing equal-floatable roughing to obtain equal-floatable roughing concentrate and equal-floatable roughing tailings; carrying out equal-floatable concentration on the equal-floatable rough concentration concentrate to obtain equal-floatable concentrated concentrate; carrying out gold-antimony separation on the concentrate subjected to the equal-floatability concentration to obtain gold-antimony separation concentrate and gold-antimony separation tailings, carrying out antimony concentration on the gold-antimony separation concentrate to obtain antimony concentrate, and carrying out antimony scavenging on the gold-antimony separation tailings to obtain first gold concentrate; carrying out equal-floatable scavenging on the equal-floatable rougher tailings to obtain equal-floatable scavenged tailings; and carrying out gold roughing on the floatable scavenged tailings to obtain gold roughed concentrate and gold roughed tailings, carrying out gold fine cleaning on the gold roughed concentrate to obtain second gold concentrate, and carrying out gold scavenging on the gold roughed tailings to obtain final tailings. The beneficiation method for the gold antimony ore can comprehensively recover and efficiently separate the gold and the antimony.
Description
Technical Field
The application relates to the field of mineral separation, in particular to a mineral separation method for gold and antimony ores.
Background
For the gold-antimony intergrowth ore, because antimony sulfide minerals have good flotability in an acid environment, part of the antimony sulfide minerals are inhibited in an alkaline environment, the antimony minerals are generally floated in a weakly acidic environment, while gold-bearing minerals are generally pyrites and arsenopyrites and are activated in the acid environment and are difficult to inhibit, and traditional pyrites and arsenopyrites inhibitors are suitable for the alkaline environment, so the traditional flotation process generally adopts gold-antimony bulk flotation to produce gold-antimony bulk concentrates, or adopts an antimony-gold sequential preferential flotation process under the weak inhibition or no inhibition condition of the gold-bearing minerals to produce antimony concentrates and gold concentrates, and products obtained by the two processes lack of effective antimony-gold separation inhibitors exist: 1) qualified antimony concentrate is difficult to obtain; 2) the antimony content of the gold concentrate exceeds the standard, and the valuation coefficients of antimony and gold during sale are seriously influenced.
Antimony belongs to harmful elements in gold concentrate, cyanogen and oxygen are consumed during cyaniding leaching, and a reactant NaCNS easily forms a cover to influence the leaching rate of gold; aiming at the gold concentrate containing antimony, a gold concentrate pretreatment antimony removal process is developed in a smelting link: 1) the roasting process comprises the following steps: the fine melt of antimony oxide generated at high temperature is easy to form secondary package on the surface of gold particles, thus influencing the leaching rate of gold and having prominent environmental protection problem; 2) the wet alkali leaching antimony removal process comprises the following steps: na (Na)2The S is seriously proliferated, the sodium sulfate, the sodium thiosulfate, the sodium sulfite and the sodium thioantimonate are seriously accumulated, the waste liquid treatment capacity is large, and the cost is high.
Therefore, how to efficiently separate antimony and gold in the beneficiation link and provide high-quality concentrate for smelting is an important subject to be solved urgently in the research field of precious metal beneficiation.
Disclosure of Invention
The application aims to provide a beneficiation method for gold antimony ore, so as to solve the problems.
In order to achieve the purpose, the following technical scheme is adopted in the application:
a mineral processing method of gold-antimony ore comprises the following steps:
grinding raw ore containing the gold and antimony ore to obtain raw ore pulp;
sequentially adding a pH regulator and an antimony mineral activator into the raw ore pulp, and then adding an antimony mineral collector and a foaming agent to perform equal-floatable roughing to obtain equal-floatable roughing concentrate and equal-floatable roughing tailings;
carrying out equal-floatable concentration on the equal-floatable rough concentration concentrate to obtain equal-floatable concentrated concentrate and equal-floatable concentrated middling; carrying out gold-antimony separation on the equal-floatability concentration concentrate to obtain gold-antimony separation concentrate and gold-antimony separation tailings, carrying out antimony concentration on the gold-antimony separation concentrate to obtain antimony concentrate, and carrying out antimony scavenging on the gold-antimony separation tailings to obtain first gold concentrate;
adding the antimony mineral activator, the antimony mineral collector and the foaming agent into the floatable rougher tailings for equal flotation so as to obtain equal floatable middlings and equal floatable scavenged tailings;
performing gold roughing on the equal-flotable scavenging tailings to obtain gold roughing concentrate and gold roughing tailings, performing gold concentration on the gold roughing concentrate to obtain second gold concentrate, and performing gold scavenging on the gold roughing tailings to obtain final tailings;
and returning the floatable concentration middlings and the floatable sweeping middlings to the previous operation.
Preferably, the fineness of the ground ore is less than or equal to 0.074mm, and the fraction accounts for 55-90%.
Preferably, the pH adjusting agent comprises sulfuric acid and/or oxalic acid;
the antimony mineral activator comprises one or more of lead nitrate, ferrous sulfate and ferric chloride;
the antimony mineral collector comprises sodium diethyldithiocarbamate trihydrate and/or diphenylamino dithiophosphoric acid;
the foaming agent comprises one or more of terpineol, methyl isobutyl carbinol and methoxy polypropylene glycol.
Preferably, the end point of adding the pH regulator is that the pH of the system is 5.5-7;
the dosage of the antimony mineral activator is 50-200g per ton of raw ore;
the dosage of the antimony mineral collector is 50-200g per ton of raw ore;
the dosage of the foaming agent is 10-40g per ton of raw ore.
Preferably, the beneficiation method for gold antimony ore further comprises:
before the gold and antimony separation, regrinding the floatable concentrated concentrate;
the fineness of the regrinding treatment is less than or equal to 0.038mm, and the fraction accounts for 60-90%.
Preferably, the gold-antimony separation and the antimony concentration are respectively and independently added with an inhibitor of a gold-loaded mineral;
the inhibitor comprises a cycloalkane polycarboxylate and/or a sulfite;
preferably, the cycloalkane polycarboxylate comprises disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylate;
and adding the antimony mineral activator and the antimony mineral collector during antimony scavenging.
Preferably, the amount of the inhibitor added when the gold and antimony are separated is 5-50g per ton of raw ore; the amount of the inhibitor added when the antimony concentration is carried out is 2-20g per ton of raw ore;
and when the antimony scavenging is carried out, the amount of the added antimony mineral activator is 10-50g per ton of raw ore, and the amount of the added antimony mineral collector is 10-30g per ton of raw ore.
Preferably, an activating agent of gold, a gold high-efficiency collecting agent and the foaming agent are added during the gold roughing;
the activating agent comprises copper sulfate, and the high-efficiency gold collecting agent is high-grade xanthate and/or di-n-butyl ammonium dithiophosphate;
and a pH value regulator is also added during the gold roughing, wherein the pH value regulator comprises oxalic acid and/or sulfuric acid.
Preferably, the amount of the activating agent added to gold during the gold roughing is 20-100g per ton of raw ore, the amount of the efficient gold collecting agent added to the raw ore is 50-200g per ton of raw ore, the amount of the foaming agent added to the raw ore is 10-50g per ton of raw ore, and the end point of adding the pH value regulator is that the pH value of the system is 5.5-7.
Preferably, the equal-floatable roughing is carried out for 1-2 times, the equal-floatable scavenging is carried out for 2-3 times, the antimony refining is carried out for 2-3 times, the antimony scavenging is carried out for 2-3 times, the gold roughing is carried out for 1-2 times, the gold scavenging is carried out for 2-3 times, and the gold refining is carried out for 2-3 times.
Compared with the prior art, the beneficial effect of this application includes:
according to the beneficiation method of the gold-antimony ore, the pH value of ore pulp is adjusted, and the antimony mineral activating agent and the antimony mineral collecting agent are added, so that a proper ore pulp environment is created for efficient flotation of antimony, most of antimony minerals enter iso-floatable rough concentrate, and meanwhile, according to a harmonious beneficiation principle, a part of gold-loaded minerals with floatability similar to that of the antimony minerals are not inhibited and enter the iso-floatable rough concentrate; carrying out equal-floatable concentration on the equal-floatable rough concentrate to improve the gold-antimony grade of the equal-floatable rough concentrate, and then carrying out gold-antimony separation operation on the equal-floatable concentrated concentrate to obtain antimony concentrate and first gold concentrate; the floatability of the gold-loaded mineral in the equal-floatability scavenging tailings is relatively poor, the activating agent of the gold-loaded mineral, the collecting agent with strong collecting capability and the foaming agent are adopted to carry out enhanced recovery of the gold-loaded mineral, and the equal-floatability scavenging tailings are subjected to gold rough separation and gold fine separation to obtain second gold concentrate, so that the higher recovery rate of gold is ensured. The method and the device fully utilize the difference of natural floatability of different minerals, successfully realize comprehensive recovery and efficient separation of gold and antimony, solve the problem of gold and antimony separation in the traditional process, obtain high-quality antimony concentrate and gold concentrate, and improve the economic benefit and the comprehensive resource utilization rate of enterprises.
Drawings
To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments are briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope of the present application.
Fig. 1 is a schematic process flow diagram of a beneficiation method of gold antimony ore provided in example 1.
Detailed Description
The terms as used herein:
"prepared from … …" is synonymous with "comprising". The terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, process, method, article, or apparatus that comprises a list of elements is not necessarily limited to only those elements but may include other elements not expressly listed or inherent to such composition, process, method, article, or apparatus.
The conjunction "consisting of … …" excludes any unspecified elements, steps or components. If used in a claim, the phrase is intended to claim as closed, meaning that it does not contain materials other than those described, except for the conventional impurities associated therewith. When the phrase "consisting of … …" appears in a clause of the subject matter of the claims rather than immediately after the subject matter, it defines only the elements described in the clause; other elements are not excluded from the claims as a whole.
When an amount, concentration, or other value or parameter is expressed as a range, preferred range, or as a range of upper preferable values and lower preferable values, this is to be understood as specifically disclosing all ranges formed from any pair of any upper range limit or preferred value and any lower range limit or preferred value, regardless of whether ranges are separately disclosed. For example, when the range "1 ~ 5" is disclosed, the ranges described should be construed to include the ranges "1 ~ 4", "1 ~ 3", "1 ~ 2 and 4 ~ 5", "1 ~ 3 and 5", and the like. When a range of values is described herein, unless otherwise stated, the range is intended to include the endpoints thereof and all integers and fractions within the range.
In these examples, the parts and percentages are by mass unless otherwise indicated.
"part by mass" means a basic unit of measure indicating a mass ratio of a plurality of components, and 1 part may represent any unit mass, for example, 1g or 2.689 g. If we say that the part by mass of the component A is a part by mass and the part by mass of the component B is B part by mass, the ratio of the part by mass of the component A to the part by mass of the component B is a: b. alternatively, the mass of the A component is aK and the mass of the B component is bK (K is an arbitrary number, and represents a multiple factor). It is unmistakable that, unlike the parts by mass, the sum of the parts by mass of all the components is not limited to 100 parts.
"and/or" is used to indicate that one or both of the illustrated conditions may occur, e.g., a and/or B includes (a and B) and (a or B).
A mineral processing method of gold-antimony ore comprises the following steps:
grinding raw ore containing the gold and antimony ore to obtain raw ore pulp;
sequentially adding a pH regulator and an antimony mineral activator into the raw ore pulp, and then adding an antimony mineral collector and a foaming agent to perform equal-floatable roughing to obtain equal-floatable roughing concentrate and equal-floatable roughing tailings;
carrying out equal-floatable concentration on the equal-floatable rough concentration concentrate to obtain equal-floatable concentrated concentrate and equal-floatable concentrated middling; carrying out gold-antimony separation on the equal-floatability concentration concentrate to obtain gold-antimony separation concentrate and gold-antimony separation tailings, carrying out antimony concentration on the gold-antimony separation concentrate to obtain antimony concentrate, and carrying out antimony scavenging on the gold-antimony separation tailings to obtain first gold concentrate;
adding the antimony mineral activator, the antimony mineral collector and the foaming agent into the floatable rougher tailings for equal-flotation scavenging to obtain equal-flotation scavenged middlings and equal-flotation scavenged tailings;
performing gold roughing on the equal-flotable scavenging tailings to obtain gold roughing concentrate and gold roughing tailings, performing gold concentration on the gold roughing concentrate to obtain second gold concentrate, and performing gold scavenging on the gold roughing tailings to obtain final tailings;
and returning the floatable concentration middlings and the floatable sweeping middlings to the previous operation.
In an alternative embodiment, the fineness of the ground ore is 55-90% of the fraction of less than or equal to 0.074 mm.
Optionally, the fineness of the ground ore can be controlled to be any value of 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90% or 55% -90% of the fraction of less than or equal to 0.074 mm.
In an alternative embodiment, the pH adjusting agent comprises sulfuric acid and/or oxalic acid;
the antimony mineral activator comprises one or more of lead nitrate, ferrous sulfate and ferric chloride;
the antimony mineral collector comprises sodium diethyldithiocarbamate trihydrate and/or diphenylamino dithiophosphoric acid;
the foaming agent comprises one or more of terpineol, methyl isobutyl carbinol and methoxy polypropylene glycol.
In an alternative embodiment, the end point of adding the pH adjusting agent is to a system pH of 5.5-7;
optionally, the end point of adding the pH adjusting agent may be that the system pH is to any value between 5.5, 6, 6.5, 7, or 5.5-7;
the dosage of the antimony mineral activator is 50-200g per ton of raw ore;
the dosage of the antimony mineral collector is 50-200g per ton of raw ore;
the amount of the foaming agent is 10-40g per ton of raw ore.
Optionally, the dosage of the antimony mineral activator can be any value between 50g per ton of raw ore, 100g per ton of raw ore, 150g per ton of raw ore, 200g per ton of raw ore or 50-200g per ton of raw ore; the dosage of the antimony mineral collector can be any value of 50g per ton of raw ore, 100g per ton of raw ore, 150g per ton of raw ore, 200g per ton of raw ore or 50-200g per ton of raw ore; the amount of the foaming agent can be any value of 10g per ton of raw ore, 20g per ton of raw ore, 30g per ton of raw ore, 40g per ton of raw ore or 10-40g per ton of raw ore.
In an alternative embodiment, the method for beneficiation of gold antimony ore further comprises:
before the gold and antimony separation, regrinding the floatable concentrated concentrate;
the fineness of the regrinding treatment is less than or equal to 0.038mm, and the fraction accounts for 60-90%.
Optionally, the fineness of the regrinding treatment is less than or equal to 0.038mm, and the ratio of the fraction can be 60%, 70%, 80%, 90% or any value between 60% and 90%.
In an alternative embodiment, the gold-bearing mineral inhibitor is added independently to the gold-antimony separation and the antimony beneficiation;
the inhibitor comprises a cycloalkane polycarboxylate and/or a sulfite;
preferably, the cycloalkane polycarboxylate comprises disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylate;
and adding the antimony mineral activator and the antimony mineral collector during antimony scavenging.
In an alternative embodiment, the gold and antimony separation is carried out with the addition of the inhibitor in an amount of 5-50g per ton of raw ore; adding the inhibitor in an amount of 2-20g per ton of raw ore when carrying out antimony concentration;
and when the antimony scavenging is carried out, the amount of the added antimony mineral activator is 10-50g per ton of raw ore, and the amount of the added antimony mineral collector is 10-30g per ton of raw ore.
Optionally, the amount of the inhibitor added during the gold and antimony separation can be any value of 5g per ton of raw ore, 10g per ton of raw ore, 15g per ton of raw ore, 20g per ton of raw ore, 25g per ton of raw ore, 30g per ton of raw ore, 35g per ton of raw ore, 40g per ton of raw ore, 45g per ton of raw ore, 50g per ton of raw ore or 5-50g per ton of raw ore; the amount of the inhibitor added when the antimony concentration is carried out can be any value of 2g per ton of raw ore, 5g per ton of raw ore, 10g per ton of raw ore, 15g per ton of raw ore, 20g per ton of raw ore or 2-20g per ton of raw ore; the amount of the antimony mineral activator added during the antimony scavenging can be 10g per ton of raw ore, 20g per ton of raw ore, 30g per ton of raw ore, 40g per ton of raw ore, 50g per ton of raw ore or 10-50g per ton of raw ore, and the amount of the antimony mineral collector added can be any value between 10g per ton of raw ore, 20g per ton of raw ore, 30g per ton of raw ore or 10-30g per ton of raw ore.
In an alternative embodiment, an activator of gold, a gold high efficiency collector and the frother are added during the gold roughing;
the activating agent comprises copper sulfate, and the high-efficiency gold collecting agent is high-grade xanthate and/or di-n-butyl ammonium dithiophosphate;
and a pH value regulator is also added during the gold roughing, wherein the pH value regulator comprises oxalic acid and/or sulfuric acid.
In an optional embodiment, the amount of the activating agent added to the gold in the gold roughing is 20-100g per ton of raw ore, the amount of the efficient gold collecting agent added to the gold roughing is 50-200g per ton of raw ore, the amount of the foaming agent added to the gold roughing agent is 10-50g per ton of raw ore, and the end point of adding the pH value regulator is that the pH value of the system is 5.5-7.
Optionally, the amount of the activating agent added to the gold during the gold roughing can be any value between 20g per ton of raw ore, 30g per ton of raw ore, 40g per ton of raw ore, 50g per ton of raw ore, 60g per ton of raw ore, 70g per ton of raw ore, 80g per ton of raw ore, 90g per ton of raw ore, 100g per ton of raw ore or 20-100g per ton of raw ore, the amount of the high-efficiency gold collecting agent added can be any value between 50g per ton of raw ore, 100g per ton of raw ore, 150g per ton of raw ore, 200g per ton of raw ore or 50-200g per ton of raw ore, the amount of the foaming agent added can be any value between 10g per ton of raw ore, 15g per ton of raw ore, 20g per ton of raw ore, 25g per ton of raw ore, 30g per ton of raw ore, 35g per ton of raw ore, 40g per ton of raw ore, 45g per ton of raw ore, 50g per ton of raw ore or 10-50g per ton of raw ore, the end point of adding the pH value regulator is that the pH value of the system is 5.5, 6, 6.5, 7 or any value between 5.5 and 7.
In an alternative embodiment, the isoconcentration is performed 1-2 times, the isoconcentration is performed 2-3 times, the antimony concentration is performed 2-3 times, the antimony scavenging is performed 2-3 times, the gold roughing is performed 1-2 times, the gold scavenging is performed 2-3 times, and the gold concentration is performed 2-3 times.
Embodiments of the present application will be described in detail below with reference to specific examples, but those skilled in the art will appreciate that the following examples are only illustrative of the present application and should not be construed as limiting the scope of the present application. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
As shown in FIG. 1, this example provides a beneficiation method of gold-antimony ore, which is used for some gold-antimony ore containing 2.16g/t of gold and 0.67% of antimony. The gold minerals in the ores mainly comprise natural gold, silver gold ores and tellurium gold and silver ores, and the gold-carrying minerals mainly comprise pyrite, arsenopyrite and the like; the antimony mineral is mainly stibnite, other metal minerals are mainly limonite, pyrite and a small amount of arsenopyrite, sphalerite, galena, chalcopyrite and the like. The nonmetallic minerals are mainly quartz and muscovite. The beneficiation method of the gold antimony ore specifically comprises the following steps:
step A1, grinding: and grinding the raw gold-antimony ore, wherein the grinding fineness is-0.074 mm, and the fraction accounts for 70%, so that the raw ore pulp is obtained.
Procedure a2, adjusting pulp pH: adding 2000g/t of sulfuric acid into the ore pulp, stirring for 1 minute, and adjusting the pH value of the ore pulp to 6.5.
Step A3, 100g/t of lead nitrate as an antimony mineral activator was added thereto, and the mixture was stirred for 2 minutes.
Step A4, etc. can be selected roughly; and adding 100g/t of antimony collector sodium diethyldithiocarbamate trihydrate and 20g/t of foaming agent terpineol, and performing equal-floatable roughing to obtain equal-floatable roughing concentrate and equal-floatable roughing tailings.
Procedure a5, iso-flotation concentration: the concentrate of the equal floatable roughing is subjected to equal floatable concentration 1 to generate concentrate of the equal floatable roughing 1 and middlings of the equal floatable roughing 1, the concentrate of the equal floatable roughing 1 is subjected to equal floatable concentration 2 to generate concentrate of the equal floatable roughing 2 and middlings of the equal floatable roughing 2, the middlings of the equal floatable roughing 1 are returned to the equal floatable roughing feed, and the middlings of the equal floatable roughing 2 are returned to the equal floatable roughing feed.
Step A6, gold and antimony separation: after the concentrate of the iso-floatable concentration 2 is ground to be-0.038 mm and accounts for 90 percent, 10g/t of disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylate is added for gold and antimony separation operation, and separated concentrate and separated tailings are generated.
Step A7, separation and concentration, namely separating concentrate and adding 5g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium to perform antimony concentration 1 to generate antimony concentration 1 concentrate and antimony concentration 1 middlings, adding 2g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium to the antimony concentration 1 concentrate to perform antimony concentration 2 operation to generate antimony concentrate and antimony concentration 2 middlings, returning the antimony concentration 1 middlings to gold-antimony separation feed, and returning the antimony concentration 2 middlings to the antimony concentration 1 feed.
And step A8, separation scavenging, namely adding 20g/t of lead nitrate and 20g/t of antimony collecting agent into the separation tailings, scavenging 1 antimony to generate middlings and tailings of scavenging 1 antimony, adding 10g/t of lead nitrate and 10g/t of antimony collecting agent into the tailings of scavenging 1 antimony, scavenging 2 antimony to generate middlings and first gold concentrate, returning the middlings to the gold-antimony separation feeding of scavenging 1 antimony, and returning the middlings to the scavenging 1 antimony feeding of antimony.
And step A9, performing iso-floatation separation by adding 50g/t of lead nitrate, 50g/t of antimony collecting agent and 4g/t of foaming agent to iso-floatation separation 1 operation to generate iso-floatation separation 1 middlings and iso-floatation separation 1 tailings, adding 20g/t of lead nitrate, 20g/t of antimony collecting agent and 4g/t of foaming agent to iso-floatation separation 2 operation to the iso-floatation separation 1 tailings, generating iso-floatation separation 2 middlings and iso-floatation separation 2 tailings, returning the iso-floatation separation 1 middlings to the iso-floatation separation 1 middlings, returning the iso-floatation separation 2 middlings to the iso-floatation separation 1 middlings, and taking the iso-floatation separation 2 tailings as gold roughing tailings.
Step A10, gold roughing: adding 50g/t of copper sulfate, 100g/t of amyl xanthate and 20g/t of foaming agent to perform 1 operation of gold roughing to generate 1 concentrate and 1 tailing of gold roughing, adding 30g/t of copper sulfate and 50g/t of amyl xanthate to 1 tailing of gold roughing, and performing 2 operation of gold roughing to generate 2 concentrate and 2 tailing of gold roughing.
Step A11, gold refining: and combining the concentrate of the gold roughing 1 and the concentrate of the gold roughing 2, performing gold concentration 1 to generate concentrate of the gold roughing 1 and middling of the gold refining 1, performing gold concentration 2 operation on the concentrate of the gold roughing 1 to generate second gold concentrate and middling of the gold refining 2, returning the middling of the gold refining 1 to the feed of the gold roughing, and returning the middling of the gold refining 2 to the feed of the gold roughing 1.
Step A12, gold scavenging: adding 15g/t of copper sulfate, 25g/t of amyl xanthate and 4g/t of foaming agent into the gold roughing tailings, performing gold scavenging 1 to generate gold scavenging 1 middlings and gold scavenging 1 tailings, adding 10g/t of copper sulfate and 15g/t of amyl xanthate into the gold scavenging 1 tailings, performing gold scavenging 2 operation to generate gold scavenging 2 middlings and tailings, returning the gold scavenging 1 middlings to the gold roughing 2 for ore feeding, and returning the gold scavenging 2 middlings to the gold scavenging 1 for ore feeding.
The gold-antimony ore has complex mutual embedding relationship of gold and antimony and large floatability difference of gold-carrying minerals. According to the properties of ores, the process of 'gold-antimony and the like can float and then be separated-the like can float tailings and strengthen gold separation' in the example 1 is adopted for treatment, and the detection is carried out through a mineral separation closed circuit test, wherein the mineral separation indexes are shown in the table 1:
TABLE 1 closed-loop test results
As can be seen from table 1, the beneficiation method of the gold-antimony ore provided in embodiment 1 can realize comprehensive recovery and efficient separation of gold and antimony, has a stable flow structure and good beneficiation indexes, and improves the economic benefits of enterprises and the comprehensive utilization rate of resources.
Example 2
This example provides a beneficiation method for gold-antimony ore, which is used for gold-antimony ore containing 1.94g/t of gold and 1.02% of antimony. The gold minerals in the ore mainly comprise natural gold and silver gold ores, and the gold-carrying minerals mainly comprise pyrite, arsenopyrite and the like; the antimony minerals are mainly stibnite, other metal minerals are mainly pyrite and white iron ore, arsenopyrite and a small amount of rutile, sphalerite, galena, chalcopyrite, limonite and the like. The non-metal mineral is mainly quartz, and then muscovite and kaolinite, and the beneficiation method of the gold antimony ore specifically comprises the following steps:
step A1, grinding: and grinding the raw gold-antimony ore, wherein the grinding fineness is-0.074 mm, and the fraction accounts for 80%, so that the raw ore pulp is obtained.
Procedure a2, adjusting pulp pH: adding 1000g/t of oxalic acid into the ore pulp, stirring for 1 minute, and adjusting the pH value of the ore pulp to 5.8.
Step A3, adding 150g/t of lead nitrate as an antimony mineral activator, and stirring for 2 minutes.
Step A4, etc. can be selected roughly; and adding 100g/t of antimony collector sodium diethyldithiocarbamate trihydrate and 30g/t of foaming agent terpineol, and performing equal-floatable roughing to obtain equal-floatable roughing concentrate and equal-floatable roughing tailings.
Procedure a5, iso-flotation concentration: the concentrate of the equal floatable roughing is subjected to equal floatable concentration 1 to generate concentrate of the equal floatable roughing 1 and middlings of the equal floatable roughing 1, the concentrate of the equal floatable roughing 1 is subjected to equal floatable concentration 2 to generate concentrate of the equal floatable roughing 2 and middlings of the equal floatable roughing 2, the middlings of the equal floatable roughing 1 are returned to the equal floatable roughing feed, and the middlings of the equal floatable roughing 2 are returned to the equal floatable roughing feed.
Step A6, gold and antimony separation: after the concentrate of the iso-floatable concentration 2 is reground to be-0.038 mm and account for 85 percent, 30g/t of disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylate and 20g/t of sodium sulfite are added for gold and antimony separation operation, and separated concentrate and separated tailings are generated.
And step A7, separation and concentration, namely separating concentrate, adding 10g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium and 5g/t of sodium sulfite to perform antimony concentration 1 to generate antimony concentration 1 concentrate and antimony concentration 1 middling, adding 5g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium to the antimony concentration 1 concentrate to perform antimony concentration 2 operation to generate antimony concentrate and antimony concentration 2 middling, returning the antimony concentration 1 middling to the gold-antimony separation feed, and returning the antimony concentration 2 middling to the antimony concentration 1 feed.
And step A8, separation scavenging, namely adding 20g/t of lead nitrate and 10g/t of antimony collecting agent into the separation tailings, scavenging 1 antimony to generate middlings and tailings of scavenging 1 antimony, adding 10g/t of lead nitrate and 10g/t of antimony collecting agent into the tailings of scavenging 1 antimony, scavenging 2 antimony to generate middlings and first gold concentrate, returning the middlings to the gold-antimony separation feeding of scavenging 1 antimony, and returning the middlings to the scavenging 1 antimony feeding of antimony.
And step A9, performing iso-floatation separation by adding 70g/t of lead nitrate, 50g/t of antimony collecting agent and 8g/t of foaming agent to iso-floatation separation 1 operation to generate iso-floatation separation 1 middlings and iso-floatation separation 1 tailings, adding 30g/t of lead nitrate, 20g/t of antimony collecting agent and 4g/t of foaming agent to iso-floatation separation 2 operation to the iso-floatation separation 1 tailings, generating iso-floatation separation 2 middlings and iso-floatation separation 2 tailings, returning the iso-floatation separation 1 middlings to the iso-floatation separation 1 middlings, returning the iso-floatation separation 2 middlings to the iso-floatation separation 1 middlings, and taking the iso-floatation separation 2 tailings as gold roughing tailings.
Step A10, gold roughing: adding 100g/t of copper sulfate, 80g/t of amyl xanthate and 20g/t of foaming agent to perform 1 operation of gold roughing to generate 1 concentrate and 1 tailing of gold roughing, adding 50g/t of copper sulfate and 40g/t of amyl xanthate to 1 tailing of gold roughing, and performing 2 operation of gold roughing to generate 2 concentrate and 2 tailing of gold roughing.
Step A11, gold refining: and combining the concentrate of the gold roughing 1 and the concentrate of the gold roughing 2, performing gold concentration 1 to generate concentrate of the gold roughing 1 and middling of the gold refining 1, performing gold concentration 2 operation on the concentrate of the gold roughing 1 to generate middling of the gold concentrate 2 and the gold refining 2, returning the middling of the gold refining 1 to the feed of the gold roughing, and returning the middling of the gold refining 2 to the feed of the gold roughing 1.
Step A12, gold scavenging: adding 20g/t of copper sulfate, 20g/t of amyl xanthate and 4g/t of foaming agent into the gold roughing tailings, performing gold scavenging 1 to generate gold scavenging 1 middlings and gold scavenging 1 tailings, adding 10g/t of copper sulfate and 10g/t of amyl xanthate into the gold scavenging 1 tailings, performing gold scavenging 2 operation to generate gold scavenging 2 middlings and tailings, returning the gold scavenging 1 middlings to the gold roughing 2 for ore feeding, and returning the gold scavenging 2 middlings to the gold scavenging 1 for ore feeding.
The mutual embedding relationship of gold and antimony of the gold-antimony ore is complex, the gold and antimony ore is treated by adopting a process of 'gold and antimony and other floatable re-separation-equal floatable tailings for strengthening gold separation' according to the properties of the ore, and the detection is carried out by a mineral separation closed-loop test, wherein the mineral separation indexes are shown in table 2:
TABLE 2 closed-loop test results
Example 3
The embodiment provides a beneficiation method of gold-antimony ore, which is used for the gold-antimony ore with 2.85g/t gold and 0.89% antimony. The gold minerals in the ores mainly comprise natural gold, silver gold ores and tellurium gold and silver ores, and the gold-carrying minerals mainly comprise pyrite, arsenopyrite and the like; the antimony minerals are mainly stibnite and a small amount of stibnite, the other metal minerals are mainly pyrite, and in addition, a small amount of arsenopyrite, pyrrhotite, sphalerite, galena, chalcopyrite, limonite, magnetite and the like are contained. The nonmetallic minerals are mainly quartz and muscovite. The beneficiation method of the gold antimony ore specifically comprises the following steps:
procedure a1, grinding: and grinding the raw gold-antimony ore, wherein the grinding fineness is-0.074 mm, and the grain fraction accounts for 60 percent, so that the raw ore pulp is obtained.
Procedure a2, adjusting pulp pH: adding 1000g/t of sulfuric acid into the ore pulp, stirring for 1 minute, and adjusting the pH value of the ore pulp to 6.8.
Step A3, adding 150g/t of lead nitrate as an antimony mineral activator, and stirring for 2 minutes.
Step A4, etc. can be selected roughly; 120g/t of antimony collector sodium diethyldithiocarbamate trihydrate and 40g/t of terpineol serving as a foaming agent are added for equal-floatable roughing to obtain equal-floatable roughing concentrates and equal-floatable roughing tailings.
Procedure a5, iso-flotation concentration: the concentrate of the equal floatable roughing is subjected to equal floatable concentration 1 to generate concentrate of the equal floatable roughing 1 and middlings of the equal floatable roughing 1, the concentrate of the equal floatable roughing 1 is subjected to equal floatable concentration 2 to generate concentrate of the equal floatable roughing 2 and middlings of the equal floatable roughing 2, the middlings of the equal floatable roughing 1 are returned to the equal floatable roughing feed, and the middlings of the equal floatable roughing 2 are returned to the equal floatable roughing feed.
Step A6, gold and antimony separation: after the concentrate of the iso-floatable concentration 2 is reground to be-0.038 mm and accounts for 70 percent, 50g/t of disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylate is added to carry out gold and antimony separation operation, and separated concentrate and separated tailings are generated.
And step A7, separation and concentration, namely separating concentrate and adding 20g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-disodium dicarboxylate to perform antimony concentration 1 to generate antimony concentration 1 concentrate and antimony concentration 1 middling, adding 10g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-disodium dicarboxylate to the antimony concentration 1 concentrate to perform antimony concentration 2 operation to generate antimony concentrate and antimony concentration 2 middling, returning the antimony concentration 1 middling to gold and antimony separation feed, and returning the antimony concentration 2 middling to the antimony concentration 1 feed.
And step A8, separation scavenging, namely adding 20g/t of lead nitrate and 20g/t of antimony collecting agent into the separation tailings, scavenging 1 antimony to generate middlings and tailings of scavenging 1 antimony, adding 10g/t of lead nitrate and 10g/t of antimony collecting agent into the tailings of scavenging 1 antimony, scavenging 2 antimony to generate middlings and gold concentrates 1, returning the middlings to the gold-antimony separation feeding of scavenging 1 antimony, and returning the middlings to the scavenging 1 feeding of antimony.
And step A9, performing iso-floatation flotation 1 operation by adding 50g/t of lead nitrate, 50g/t of antimony collecting agent and 10g/t of foaming agent to iso-floatation tailings, generating iso-floatation 1 middlings and iso-floatation 1 middlings, adding 20g/t of lead nitrate, 20g/t of antimony collecting agent and 4g/t of foaming agent to iso-floatation 2 operation by adding 1 tailing, generating iso-floatation 2 middlings and iso-floatation 2 tailings, returning the iso-floatation 1 middlings to the iso-floatation rougher tailings, returning the iso-floatation 2 middlings to the iso-floatation 1 middlings, and taking the iso-floatation 2 tailings as gold rougher tailings.
Step A10, gold roughing: adding 100g/t of copper sulfate, 100g/t of amyl xanthate and 20g/t of foaming agent to perform 1 operation of gold roughing to generate 1 concentrate and 1 tailing of gold roughing, adding 50g/t of copper sulfate and 50g/t of amyl xanthate to 1 tailing of gold roughing, and performing 2 operation of gold roughing to generate 2 concentrate and 2 tailing of gold roughing.
Step A11, gold refining: and combining the concentrate of the gold roughing 1 and the concentrate of the gold roughing 2, performing gold concentration 1 to generate concentrate of the gold roughing 1 and middling of the gold refining 1, performing gold concentration 2 operation on the concentrate of the gold roughing 1 to generate middling of the gold concentrate 2 and the gold refining 2, returning the middling of the gold refining 1 to the feed of the gold roughing, and returning the middling of the gold refining 2 to the feed of the gold roughing 1.
Step A12, gold scavenging: adding 25g/t of copper sulfate, 25g/t of amyl xanthate and 4g/t of foaming agent into the gold roughing tailings, performing gold scavenging 1 to generate gold scavenging 1 middlings and gold scavenging 1 tailings, adding 10g/t of copper sulfate and 10g/t of amyl xanthate into the gold scavenging 1 tailings, performing gold scavenging 2 operation to generate gold scavenging 2 middlings and tailings, returning the gold scavenging 1 middlings to the gold roughing 2 for ore feeding, and returning the gold scavenging 2 middlings to the gold scavenging 1 for ore feeding.
The mutual embedding relationship of gold and antimony of the gold-antimony ore is complex, the gold and antimony ore is treated by adopting a process of 'gold and antimony and other floatable re-separation-equal floatable tailings for strengthening gold separation' according to the properties of the ore, and the detection is carried out by a mineral separation closed-loop test, wherein the mineral separation indexes are shown in table 3:
TABLE 3 closed-loop test results
Comparative example 1
The comparison example provides a beneficiation method for gold-antimony ore by adopting antimony-gold sequence priority, which is used for gold-antimony ore containing 2.16g/t of gold and 0.67% of antimony. The gold minerals in the ores mainly comprise natural gold, silver gold ores and tellurium gold and silver ores, and the gold-carrying minerals mainly comprise pyrite, arsenopyrite and the like; the antimony mineral is mainly stibnite, other metal minerals are mainly limonite, pyrite and a small amount of arsenopyrite, sphalerite, galena, chalcopyrite and the like. The nonmetallic minerals are mainly quartz and muscovite. The beneficiation method of the gold-antimony ore specifically comprises the following steps:
step A1, grinding: and grinding the raw gold-antimony ore, wherein the grinding fineness is-0.074 mm, and the fraction accounts for 90%, so that the raw ore pulp is obtained.
Step A2, adding 200g/t of lead nitrate as an antimony mineral activator, and stirring for 2 minutes.
Step A3, carrying out preferential roughing on antimony; and adding 100g/t of antimony collecting agent sodium diethyldithiocarbamate trihydrate and 20g/t of foaming agent terpineol, and performing preferential roughing on antimony to obtain a preferential roughed concentrate and a preferential roughed tailing of the antimony.
Step A4, selecting antimony preferentially: the antimony-preferred roughing concentrate is subjected to antimony-preferred concentration 1 to generate an antimony-preferred concentration 1 concentrate and an antimony-preferred concentration 1 middling, the antimony-preferred concentration 1 concentrate is subjected to antimony-preferred concentration 2 to generate an antimony concentrate and an antimony-preferred concentration 2 middling, the antimony-preferred concentration 1 middling is returned to the antimony-preferred roughing feed, and the antimony-preferred concentration 2 middling is returned to the antimony-preferred concentration 1 feed.
And a step A5 of preferential antimony scavenging, which is to add 30g/t of lead nitrate and 50g/t of antimony collecting agent to the antimony preferential rougher tailings, carry out 1 operation of preferential antimony scavenging on foaming agent at 4g/t to generate 1 middlings of preferential antimony scavenging and 1 tailings of preferential antimony scavenging, add 20g/t of antimony collecting agent to the 1 tailings of preferential scavenging on foaming agent at 4g/t, carry out 2 operation of preferential antimony scavenging on foaming agent at 4g/t to generate 2 middlings of preferential antimony scavenging and 2 tailings of preferential antimony scavenging, return the 1 middlings of preferential antimony scavenging to the 1 middlings of preferential antimony scavenging, return the 2 middlings of preferential antimony scavenging to the 1 middlings of preferential antimony scavenging, and use the 2 tailings of preferential antimony scavenging as gold rougher feed.
Step A6, gold roughing: adding 1500g/t of sulfuric acid, 100g/t of copper sulfate, 120g/t of amyl xanthate and 20g/t of foaming agent to perform 1 operation of gold roughing to generate 1 concentrate and 1 tailing of gold roughing, adding 50g/t of copper sulfate and 60g/t of amyl xanthate to 1 tailing of gold roughing, and performing 2 operation of gold roughing to generate 2 concentrate and 2 tailing of gold roughing.
Step A7, gold refining: and combining the concentrate of the gold roughing 1 and the concentrate of the gold roughing 2, performing gold concentration 1 to generate concentrate of the gold roughing 1 and middling of the gold refining 1, performing gold concentration 2 operation on the concentrate of the gold roughing 1 to generate concentrate of the gold and middling of the gold refining 2, returning the middling of the gold refining 1 to the feed of the gold roughing, and returning the middling of the gold refining 2 to the feed of the gold roughing 1.
Step A8, gold scavenging: adding 20g/t of copper sulfate and 30g/t of amyl xanthate into the gold roughing tailings, performing gold scavenging 1 to generate gold scavenging 1 middlings and gold scavenging 1 tailings, adding 10g/t of copper sulfate and 20g/t of amyl xanthate into the gold scavenging 1 tailings, performing gold scavenging 2 to generate gold scavenging 2 middlings and gold tailings, returning the gold scavenging 1 middlings to the gold roughing 2 for feeding, and returning the gold scavenging 2 middlings to the gold scavenging 1 for feeding.
According to the properties of ores, the ores are treated by adopting an antimony-gold sequential preferential flotation process and detected by a mineral separation closed-loop test, and the mineral separation indexes are shown in table 4:
TABLE 4 closed-loop test results
Comparative example 2
The comparison example provides a beneficiation method of gold-antimony ore with antimony-gold sequence priority, which is used for gold-antimony ore with 1.74g/t gold and 1.09% antimony. The gold mineral in the ore is mainly natural gold, and the gold-carrying mineral is mainly pyrite, arsenopyrite and the like; the antimony minerals are mainly stibnite, trace amount of antimony bloom, and other metal minerals are mainly limonite, sphalerite, galena, chalcopyrite and the like. The non-metal mineral is mainly quartz, and then muscovite and kaolinite, and the beneficiation method of the gold antimony ore specifically comprises the following steps:
step A1, grinding: and grinding the raw gold-antimony ore, wherein the grinding fineness is-0.074 mm, and the grain fraction accounts for 65%, so that the raw ore pulp is obtained.
Step A2, adding 1000g/t of sodium sulfite as a gold-bearing mineral inhibitor, and stirring for 2 minutes.
Step A3, 100g/t of lead nitrate as an antimony mineral activator was added thereto, and the mixture was stirred for 2 minutes.
Step A4, carrying out preferential roughing on antimony; and adding 100g/t of antimony collecting agent sodium diethyldithiocarbamate trihydrate and 30g/t of foaming agent terpineol, and performing preferential roughing on antimony to obtain a preferential roughed concentrate and a preferential roughed tailing of the antimony.
Step A5, selecting antimony preferentially: adding 200g/t of sodium sulfite into the antimony-preferred roughing concentrates, carrying out antimony-preferred concentration 1, generating antimony-preferred concentration 1 concentrates and antimony-preferred concentration 1 middlings, adding 100g/t of sodium sulfite into the antimony-preferred concentration 1 concentrates, carrying out antimony-preferred concentration 2, generating antimony concentrates and antimony-preferred concentration 2 middlings, returning the antimony-preferred roughing feed to the antimony-preferred concentration 1 middlings, and returning the antimony-preferred concentration 2 middlings to the antimony-preferred concentration 1 feed.
And step A6, carrying out preferential antimony scavenging, namely adding 50g/t of lead nitrate and 50g/t of antimony collecting agent into the tailings of preferential antimony roughing, carrying out preferential antimony scavenging 1 operation by 4g/t of foaming agent, generating 1 middling of preferential antimony scavenging and 1 tailings of preferential antimony scavenging, adding 20g/t of antimony collecting agent into the 1 tailings of preferential antimony scavenging, carrying out 2 operation of preferential antimony scavenging by 4g/t of foaming agent, generating 2 middling of preferential antimony scavenging and 2 tailings of preferential antimony scavenging, returning the 1 middling of preferential antimony scavenging to the 1 middling of preferential antimony scavenging, returning the 2 middling of preferential antimony scavenging to the 1 middling of preferential antimony scavenging, and taking the 2 tailings of preferential antimony scavenging as the gold roughing feed.
Step A7, gold roughing: after the gold roughing feeding is reground to the condition that the-0.074 mm size fraction accounts for 80%, 100g/t of copper sulfate, 100g/t of amyl xanthate, 20g/t of ammonium black and 10g/t of foaming agent are added to perform gold roughing 1 operation to generate gold roughing 1 concentrate and roughing 1 tailings, 50g/t of copper sulfate, 60g/t of amyl xanthate and 10g/t of ammonium black are added to the gold roughing 1 tailings, and gold roughing 2 operation is performed to generate gold roughing 2 concentrate and roughing 2 tailings.
Step A8, gold refining: and combining the concentrate of the gold roughing 1 and the concentrate of the gold roughing 2, performing gold concentration 1 to generate concentrate of the gold roughing 1 and middling of the gold refining 1, performing gold concentration 2 operation on the concentrate of the gold roughing 1 to generate concentrate of the gold and middling of the gold refining 2, returning the middling of the gold refining 1 to the feed of the gold roughing, and returning the middling of the gold refining 2 to the feed of the gold roughing 1.
Step A9, gold scavenging: adding 20g/t of copper sulfate and 20g/t of amyl xanthate into the gold roughing tailings, performing gold scavenging 1 to generate gold scavenging 1 middlings and gold scavenging 1 tailings, adding 10g/t of copper sulfate and 10g/t of amyl xanthate into the gold scavenging 1 tailings, performing gold scavenging 2 to generate gold scavenging 2 middlings and gold tailings, returning the gold scavenging 1 middlings to the gold roughing 2 for ore feeding, and returning the gold scavenging 2 middlings to the gold scavenging 1 for ore feeding.
According to the properties of ores, antimony and gold are treated by adopting a 'antimony-gold sequential preferential flotation' process and detected by a beneficiation closed-loop test, and beneficiation indexes of the antimony-gold preferential flotation process are shown in a table 5:
TABLE 5 closed-loop test results
As can be seen from the ore dressing indexes of the comparative example, the antimony grade of the obtained antimony concentrate is only about 30 percent by adopting the traditional antimony-gold sequential preferential flotation process, some antimony concentrates even cannot reach the minimum standard of the antimony concentrate, the quality is not ideal, and meanwhile, the gold content in the antimony concentrate is higher, so that the sale of the antimony concentrate and the valuation coefficients of the antimony and the gold during the sale are influenced; under the condition that an effective separation inhibitor is not available, in order to ensure the quality of antimony concentrate, antimony minerals are not sufficiently activated during antimony separation, so that the antimony grade in the gold concentrate is high, the recovery rate of antimony is influenced, and the recovery rate of gold in subsequent treatment is influenced because antimony belongs to harmful impurities in the gold concentrate. The technology and the separation inhibitor for separating the antimony from the gold and the like in a floatable and re-separation manner and performing the gold reinforced flotation solve the problems, high-quality antimony concentrate and gold concentrate are obtained, the antimony grade of the antimony concentrate is about 50%, the antimony concentrate belongs to high-quality antimony concentrate (primary product or secondary product), and the antimony content of the gold concentrate is obviously reduced; meanwhile, the recovery rate of gold is improved, and the high-efficiency separation and comprehensive recovery of gold and antimony are realized.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Moreover, those skilled in the art will appreciate that while some embodiments herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the application and form different embodiments. For example, in the claims above, any of the claimed embodiments may be used in any combination. The information disclosed in this background section is only for enhancement of understanding of the general background of the application and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (10)
1. The beneficiation method of the gold-antimony ore is characterized by comprising the following steps:
grinding raw ore containing the gold and antimony ore to obtain raw ore pulp;
sequentially adding a pH regulator and an antimony mineral activator into the raw ore pulp, and then adding an antimony mineral collector and a foaming agent to perform equal-floatable roughing to obtain equal-floatable roughing concentrate and equal-floatable roughing tailings;
carrying out equal-floatable concentration on the equal-floatable rough concentration concentrate to obtain equal-floatable concentrated concentrate and equal-floatable concentrated middling; carrying out gold-antimony separation on the equal-floatability concentration concentrate to obtain gold-antimony separation concentrate and gold-antimony separation tailings, carrying out antimony concentration on the gold-antimony separation concentrate to obtain antimony concentrate, and carrying out antimony scavenging on the gold-antimony separation tailings to obtain first gold concentrate;
adding the antimony mineral activator, the antimony mineral collector and the foaming agent into the floatable rougher tailings for equal flotation so as to obtain equal floatable middlings and equal floatable scavenged tailings;
performing gold roughing on the equal-flotable scavenging tailings to obtain gold roughing concentrate and gold roughing tailings, performing gold concentration on the gold roughing concentrate to obtain second gold concentrate, and performing gold scavenging on the gold roughing tailings to obtain final tailings;
and returning the floatable concentration middlings and the floatable sweeping middlings to the previous operation.
2. The beneficiation method of gold antimony ore according to claim 1, wherein the fineness of the ground ore is equal to or less than 0.074mm, and the fraction accounts for 55% -90%.
3. The beneficiation method of gold antimony ore according to claim 1, wherein the pH adjusting agent includes sulfuric acid and/or oxalic acid;
the antimony mineral activator comprises one or more of lead nitrate, ferrous sulfate and ferric chloride;
the antimony mineral collector comprises sodium diethyldithiocarbamate trihydrate and/or diphenylamino dithiophosphoric acid;
the foaming agent comprises one or more of terpineol, methyl isobutyl carbinol and methoxy polypropylene glycol.
4. The beneficiation method of gold antimony ore according to claim 3, wherein the end point of adding the pH regulator is that the system pH is 5.5 to 7;
the dosage of the antimony mineral activator is 50-200g per ton of raw ore;
the dosage of the antimony mineral collector is 50-200g per ton of raw ore;
the amount of the foaming agent is 10-40g per ton of raw ore.
5. The beneficiation method for gold antimony ore according to claim 1, further comprising:
before the gold and antimony separation, regrinding the floatable concentrated concentrate;
the fineness of the regrinding treatment is less than or equal to 0.038mm, and the fraction accounts for 60-90%.
6. The beneficiation method for gold-antimony ore according to claim 5, wherein an inhibitor for gold-bearing minerals is added independently to the gold-antimony separation and the antimony concentration;
the inhibitor comprises a cycloalkane polycarboxylate and/or a sulfite;
preferably, the cycloalkane polycarboxylate comprises disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylate;
and adding the antimony mineral activator and the antimony mineral collector during antimony scavenging.
7. The beneficiation method of gold-antimony ore according to claim 6, wherein the amount of the inhibitor added when the gold-antimony separation is performed is 5-50g per ton of raw ore; adding the inhibitor in an amount of 2-20g per ton of raw ore when carrying out antimony concentration;
and when the antimony scavenging is carried out, the amount of the added antimony mineral activator is 10-50g per ton of raw ore, and the amount of the added antimony mineral collector is 10-30g per ton of raw ore.
8. The beneficiation method for gold antimony ore according to claim 1, wherein an activating agent for gold, a high-efficiency gold collecting agent and the foaming agent are added during the gold roughing;
the activating agent comprises copper sulfate, and the high-efficiency gold collecting agent is high-grade xanthate and/or di-n-butyl ammonium dithiophosphate;
and a pH value regulator is also added during the gold roughing, wherein the pH value regulator comprises oxalic acid and/or sulfuric acid.
9. The gold antimony ore beneficiation method according to claim 8, wherein the amount of the gold activator added during the gold roughing is 20-100g per ton of raw ore, the amount of the gold high efficiency collector added is 50-200g per ton of raw ore, the amount of the foaming agent added is 10-50g per ton of raw ore, and the end point of the addition of the pH value regulator is that the system pH is 5.5-7.
10. The gold antimony ore dressing method according to any one of claims 1 to 9, characterized in that said iso-flotation roughing is performed 1 to 2 times, said iso-flotation scavenging is performed 2 to 3 times, said antimony concentrating is performed 2 to 3 times, said antimony scavenging is performed 2 to 3 times, said gold roughing is performed 1 to 2 times, said gold scavenging is performed 2 to 3 times, and said gold concentrating is performed 2 to 3 times.
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| CN114985112A (en) * | 2022-05-18 | 2022-09-02 | 广西大学 | Recovery method of mixed antimony ore containing gold, sulfur and oxygen |
| CN115007309A (en) * | 2022-06-20 | 2022-09-06 | 长春黄金研究院有限公司 | Antimony and arsenic step separation method for high-arsenic complex antimony gold ore |
| CN115921101A (en) * | 2022-12-02 | 2023-04-07 | 湖南新龙矿业有限责任公司 | Flotation method of arsenic-containing gold-antimony symbiotic ore |
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| CN114985112A (en) * | 2022-05-18 | 2022-09-02 | 广西大学 | Recovery method of mixed antimony ore containing gold, sulfur and oxygen |
| CN115007309A (en) * | 2022-06-20 | 2022-09-06 | 长春黄金研究院有限公司 | Antimony and arsenic step separation method for high-arsenic complex antimony gold ore |
| CN115007309B (en) * | 2022-06-20 | 2023-10-20 | 长春黄金研究院有限公司 | Step separation method for antimony and arsenic in high-arsenic complex antimony gold ore |
| CN115921101A (en) * | 2022-12-02 | 2023-04-07 | 湖南新龙矿业有限责任公司 | Flotation method of arsenic-containing gold-antimony symbiotic ore |
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