CN114471960B - Beneficiation method for gold antimony ore - Google Patents
Beneficiation method for gold antimony ore Download PDFInfo
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- CN114471960B CN114471960B CN202210139942.2A CN202210139942A CN114471960B CN 114471960 B CN114471960 B CN 114471960B CN 202210139942 A CN202210139942 A CN 202210139942A CN 114471960 B CN114471960 B CN 114471960B
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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 gold antimony ore comprises the following steps: grinding the raw ore containing gold antimony ore to obtain raw ore pulp; the method comprises the steps of performing iso-floatable roughing to obtain iso-floatable roughing concentrate and iso-floatable roughing tailings; performing equal floatable concentration on the equal floatable rougher concentrate to obtain equal floatable concentrate; performing gold-antimony separation on the floatable concentrate to obtain gold-antimony separated concentrate and gold-antimony separated tailings, performing antimony concentration on the gold-antimony separated concentrate to obtain antimony concentrate, and performing antimony scavenging on the gold-antimony separated tailings to obtain first gold concentrate; performing equal floatable scavenging on the equal floatable roughing tailings to obtain equal floatable scavenging tailings; and (3) carrying out gold roughing on the floatable scavenger tailings to obtain Jin Cuxuan concentrate and Jin Cuxuan tailings, carrying out gold concentration on Jin Cuxuan concentrate to obtain second gold concentrate, and carrying out gold scavenging on Jin Cuxuan tailings to obtain final tailings. The beneficiation method for gold-antimony ore provided by the application can realize comprehensive recovery and efficient separation of cash and antimony.
Description
Technical Field
The application relates to the field of mineral separation, in particular to a gold-antimony ore separation method.
Background
For Jin Ti symbiotic ores, as the floatability of antimony sulfide minerals is better in an acidic environment, part of antimony sulfide minerals can be inhibited in an alkaline environment, the antimony mineral flotation generally adopts a weak acidic environment, gold-bearing minerals are generally pyrite and arsenopyrite, and are difficult to be inhibited in an acidic environment, and conventional inhibitors of pyrite and arsenopyrite are suitable for being used in an alkaline environment, so that the conventional flotation process generally adopts gold-antimony mixed flotation to produce gold-antimony mixed concentrate, or adopts an antimony-gold sequential preferential flotation process under the condition of weak inhibition or non-inhibition of the gold-bearing minerals to produce antimony concentrate and gold concentrate, and due to the lack of effective antimony-gold separation inhibitors, products obtained by the two processes exist: 1) It is difficult to obtain acceptable antimony concentrate; 2) The gold concentrate contains antimony exceeding standard, and seriously affects the price coefficient of antimony and gold during sales.
Antimony belongs to harmful elements in gold concentrate, cyanide and oxygen are consumed during cyanide leaching, and a reactant NaCNS is extremely easy to form a cover, so that the leaching rate of gold is influenced; aiming at the gold concentrate containing antimony, a gold concentrate pretreatment antimony removal process is developed in the smelting link: 1) The roasting process comprises the following steps: the tiny melt of antimony oxide generated at high temperature is easy to form secondary package on the surface of gold particles, affects the leaching rate of gold, and has outstanding environmental protection problem; 2) Wet alkaline leaching antimony removal process: na (Na) 2 The S proliferation is serious, the accumulation of sodium sulfate, sodium thiosulfate, sodium sulfite and sodium thioantimonate is serious, the waste liquid treatment capacity is large and the cost is high.
Therefore, how to efficiently separate antimony and gold in the beneficiation link provides high-quality concentrate for smelting, and is an important subject to be solved in the research field of precious metal beneficiation.
Disclosure of Invention
The purpose of the present application is to provide a beneficiation method for gold antimony ore, so as to solve the above problems.
In order to achieve the above purpose, the present application adopts the following technical scheme:
a beneficiation method for gold antimony ore, comprising:
grinding the raw ore containing gold 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 for equal floatable roughing to obtain equal floatable roughing concentrate and equal floatable roughing tailings;
performing equal floatable concentration on the equal floatable rough concentrate to obtain equal floatable concentrate and equal floatable concentrate middlings; performing gold-antimony separation on the floatable concentrate to obtain gold-antimony separated concentrate and gold-antimony separated tailings, performing antimony concentration on the Jin Ti separated concentrate to obtain antimony concentrate, and performing antimony scavenging on the Jin Ti separated tailings to obtain first gold concentrate;
adding the antimony mineral activating agent, the antimony mineral collecting agent and the foaming agent into the equifloatable coarse tailings to perform equifloatable scavenging to obtain equifloatable scavenged tailings and equifloatable scavenged tailings;
performing gold roughing on the floatable scavenger tailings to obtain Jin Cuxuan concentrate and Jin Cuxuan tailings, performing gold concentration on the Jin Cuxuan concentrate to obtain second gold concentrate, and performing gold scavenging on the Jin Cuxuan tailings to obtain final tailings;
and returning the floatable middlings and the floatable scavenging middlings to the previous operation.
Preferably, the fineness of the grinding is less than or equal to 0.074mm, and the grain size is 55% -90%.
Preferably, the pH adjuster 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 dianilino 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 consumption of the foaming agent is 10-40g per ton of raw ore.
Preferably, the beneficiation method of Jin Tikuang further comprises:
before the gold-antimony separation is carried out, regrinding the floatable concentrate;
the fineness of the regrind treatment is less than or equal to 0.038mm, and the grain size fraction accounts for 60% -90%.
Preferably, each of said Jin Ti isolation and said antimony beneficiation is independently supplemented with a gold-bearing mineral inhibitor;
the inhibitor comprises a cycloalkane polycarboxylate and/or 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 the antimony scavenging.
Preferably, the inhibitor is added in an amount of 5-50g per ton of raw ore when the gold-antimony separation is performed; the amount of the inhibitor added during the antimony concentration is 2-20g per ton of raw ore;
the amount of the antimony mineral activating agent added during the antimony scavenging is 10-50g per ton of raw ore, and the amount of the antimony mineral collecting agent added is 10-30g per ton of raw ore.
Preferably, the Jin Cuxuan is added with gold activator, gold high efficiency collector and the foaming agent;
the activating agent comprises copper sulfate, and the gold efficient collector is high-grade xanthate and/or di-n-butyl ammonium dithiophosphate;
a pH adjuster is also added at Jin Cuxuan, and the pH adjuster comprises oxalic acid and/or sulfuric acid.
Preferably, the Jin Cuxuan process is carried out with 20-100g of gold activator per ton of raw ore, 50-200g of gold efficient collector per ton of raw ore, 10-50g of foaming agent per ton of raw ore, and the end point of adding the pH value regulator is the system pH value of 5.5-7.
Preferably, the equal floatable roughing is performed 1-2 times, the equal floatable scavenging is performed 2-3 times, the antimony concentration is performed 2-3 times, the antimony scavenging is performed 2-3 times, the Jin Cuxuan is performed 1-2 times, the gold scavenging is performed 2-3 times, and the gold refining is performed 2-3 times.
Compared with the prior art, the beneficial effects of this application include:
according to the gold-antimony ore dressing method, the pH value of ore pulp is regulated, an antimony ore activator and an antimony ore collector are added, a proper ore pulp environment is created for efficient floatation of antimony, most of antimony ore enters into the floatable roughing concentrate, and meanwhile, according to a harmonious ore dressing principle, a part of gold-bearing ore with floatability similar to that of the antimony ore is not inhibited and enters into the floatable roughing concentrate; performing equal floatable concentration on the equal floatable rough concentrate to improve the gold and antimony grade of the equal floatable rough concentrate, and then performing gold and antimony separation operation on the equal floatable concentrate to obtain antimony concentrate and first gold concentrate; the floatability of gold-carrying minerals in the floatable scavenger tailings is relatively poor, the activating agent of the gold-carrying minerals, the collecting agent with strong collecting capability and the foaming agent are adopted to carry out the intensified recovery of the gold-carrying minerals, the floatable scavenger tailings are subjected to the gold roughing and the gold refining to obtain second gold concentrate, and the higher recovery rate of gold is ensured. The method makes full use of the difference of natural floatability of different minerals, successfully realizes comprehensive recovery and efficient separation of gold and antimony, solves the problem of gold-antimony separation in the traditional process, obtains high-quality antimony concentrate and gold concentrate, and improves the economic benefit and the comprehensive utilization rate of resources of enterprises.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate certain 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 the beneficiation method of gold antimony ore provided in example 1.
Detailed Description
The term as used herein:
"prepared from … …" is synonymous with "comprising". The terms "comprising," "including," "having," "containing," or any other variation thereof, as used herein, are intended to cover a non-exclusive inclusion. For example, a composition, step, 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, step, method, article, or apparatus.
The conjunction "consisting of … …" excludes any unspecified element, step or component. If used in a claim, such phrase will cause the claim to be closed, such that it does not include materials other than those described, except for conventional impurities associated therewith. When the phrase "consisting of … …" appears in a clause of the claim body, rather than immediately following the subject, it is limited to only the elements described in that clause; other elements are not excluded from the stated claims as a whole.
When an equivalent, concentration, or other value or parameter is expressed as a range, preferred range, or a range bounded by a list 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 ranges of "1 to 5" are disclosed, the described ranges should be construed to include ranges of "1 to 4", "1 to 3", "1 to 2 and 4 to 5", "1 to 3 and 5", and the like. When a numerical range is described herein, unless otherwise indicated, the range is intended to include its endpoints and all integers and fractions within the range.
In these examples, the parts and percentages are by mass unless otherwise indicated.
"parts by mass" means a basic unit of measurement showing the mass ratio of a plurality of components, and 1 part may be any unit mass, for example, 1g may be expressed, 2.689g may be expressed, and the like. If we say that the mass part of the a component is a part and the mass part of the B component is B part, the ratio a of the mass of the a component to the mass of the B component is represented as: 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 not misunderstood that the sum of the parts by mass of all the components is not limited to 100 parts, unlike the parts by mass.
"and/or" is used to indicate that one or both of the illustrated cases may occur, e.g., a and/or B include (a and B) and (a or B).
A beneficiation method for gold antimony ore, comprising:
grinding the raw ore containing gold 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 for equal floatable roughing to obtain equal floatable roughing concentrate and equal floatable roughing tailings;
performing equal floatable concentration on the equal floatable rough concentrate to obtain equal floatable concentrate and equal floatable concentrate middlings; performing gold-antimony separation on the floatable concentrate to obtain gold-antimony separated concentrate and gold-antimony separated tailings, performing antimony concentration on the Jin Ti separated concentrate to obtain antimony concentrate, and performing antimony scavenging on the Jin Ti separated tailings to obtain first gold concentrate;
adding the antimony mineral activating agent, the antimony mineral collecting agent and the foaming agent into the equifloatable coarse tailings to perform equifloatable scavenging to obtain equifloatable scavenged tailings and equifloatable scavenged tailings;
performing gold roughing on the floatable scavenger tailings to obtain Jin Cuxuan concentrate and Jin Cuxuan tailings, performing gold concentration on the Jin Cuxuan concentrate to obtain second gold concentrate, and performing gold scavenging on the Jin Cuxuan tailings to obtain final tailings;
and returning the floatable middlings and the floatable scavenging middlings to the previous operation.
In an alternative embodiment, the fineness of the grinding is less than or equal to 0.074mm, and the fineness of the grinding accounts for 55% -90%.
Alternatively, the fineness control of the grinding may be any value between 55%, 60%, 65%, 70%, 75%, 80%, 85%, 90% or 55% -90% of the 0.074mm size fraction or less.
In an alternative embodiment, the pH adjuster 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 dianilino dithiophosphoric acid;
the foaming agent comprises one or more of terpineol, methyl isobutyl carbinol and methoxy polypropylene glycol.
In an alternative embodiment, the pH adjuster is added at an endpoint of the system pH of 5.5-7;
alternatively, the end point of the addition of the pH adjustor can be any value between the system pH and 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 consumption of the foaming agent is 10-40g per ton of raw ore.
Alternatively, the antimony mineral activator may be used in an amount of any 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 antimony mineral collector may 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 may be any value between 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 Jin Tikuang beneficiation process further comprises:
before the gold-antimony separation is carried out, regrinding the floatable concentrate;
the fineness of the regrind treatment is less than or equal to 0.038mm, and the grain size fraction accounts for 60% -90%.
Optionally, the fineness of the regrind treatment is less than or equal to 0.038mm, and the fraction ratio may be any value between 60%, 70%, 80%, 90%, or 60% -90%.
In an alternative embodiment, the Jin Ti separation and the antimony beneficiation are each independently added with a gold-bearing mineral inhibitor;
the inhibitor comprises a cycloalkane polycarboxylate and/or 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 the antimony scavenging.
In an alternative embodiment, the inhibitor is added in an amount of 5 to 50g per ton of crude ore when the gold-antimony separation is performed; the amount of the inhibitor added during the antimony concentration is 2-20g per ton of raw ore;
the amount of the antimony mineral activating agent added during the antimony scavenging is 10-50g per ton of raw ore, and the amount of the antimony mineral collecting agent added is 10-30g per ton of raw ore.
Alternatively, the amount of the inhibitor added in performing the gold-antimony separation may be any value between 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 in carrying out the antimony concentration may be any value between 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 scavenger may 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 may 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, the Jin Cuxuan time is supplemented with a gold activator, a gold high efficiency collector, and the foaming agent;
the activating agent comprises copper sulfate, and the gold efficient collector is high-grade xanthate and/or di-n-butyl ammonium dithiophosphate;
a pH adjuster is also added at Jin Cuxuan, and the pH adjuster comprises oxalic acid and/or sulfuric acid.
In an alternative embodiment, the Jin Cuxuan addition of gold activator is performed in an amount of 20 to 100 grams per ton of raw ore, the gold high efficiency collector is added in an amount of 50 to 200 grams per ton of raw ore, the foamer is added in an amount of 10 to 50 grams per ton of raw ore, and the pH adjuster is added at a pH of the system to 5.5 to 7.
Alternatively, the amount of the activator added to the gold while the Jin Cuxuan is performed may 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 efficient gold collector added may 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 may 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, or any value between 50g per ton of raw ore, and the pH is adjusted to any value between 5.5 and 7.5, or any value between 5.6.
In an alternative embodiment, the iso-floatable roughing is performed 1-2 times, the iso-floatable scavenging is performed 2-3 times, the antimony beneficiation is performed 2-3 times, the antimony scavenging is performed 2-3 times, the Jin Cuxuan is performed 1-2 times, the gold scavenging is performed 2-3 times, and the gold beneficiation is performed 2-3 times.
Embodiments of the present application will be described in detail below with reference to specific examples, but it will be understood by those skilled in the art that the following examples are only for illustration of the present application and should not be construed as limiting the scope of the present application. The specific conditions are not noted in the examples and are carried out according to conventional conditions or conditions recommended by the manufacturer. The reagents or apparatus used were conventional products commercially available without the manufacturer's attention.
Example 1
As shown in FIG. 1, the embodiment provides a beneficiation method of gold-antimony ore, which is used for gold-antimony ore containing 2.16g/t of gold and 0.67% of antimony. Gold minerals in the ore mainly comprise natural gold, silver gold ore and tellurium gold silver ore, and gold-carrying minerals mainly comprise pyrite, arsenopyrite and the like; the antimony mineral is mainly stibium ore, the other metal mineral is mainly limonite, and the other metal mineral is pyrite, and the other metal mineral is small amount of arsenopyrite, zinc blende, 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: grinding Jin Tikuang raw ore, wherein the grinding fineness is 70% of the size fraction of-0.074 mm, so as to obtain raw ore pulp.
Step A2, adjusting the pH value of ore pulp: sulfuric acid 2000g/t is added into the ore pulp, stirred for 1 minute, and the pH value of the ore pulp is regulated to 6.5.
And step A3, adding 100g/t of lead nitrate serving as an antimony mineral activator, and stirring for 2 minutes.
Step A4, floatable roughing; adding 100g/t of antimony collector sodium diethyl dithiocarbamate and 20g/t of foaming agent terpineol, and carrying out iso-floatable roughing to obtain iso-floatable roughing concentrate and iso-floatable roughing tailings.
Step A5, and the like can be selected by floatation: the method comprises the steps of carrying out the iso-floatable rough concentration on iso-floatable rough concentration ore to generate iso-floatable concentration 1 ore concentrate and iso-floatable concentration 1 middling, carrying out the iso-floatable concentration 2 on iso-floatable concentration 1 ore concentrate to generate iso-floatable concentration 2 ore concentrate and iso-floatable concentration 2 middling, returning the iso-floatable concentration 1 middling to the iso-floatable rough concentration feeding ore, and returning the iso-floatable concentration 2 middling to the iso-floatable concentration 1 feeding ore.
Step A6, gold-antimony separation: after 2 concentrate which can be floated and carefully selected is ground again until the concentration is 90 percent of-0.038 mm, 10g/t of disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid is added for gold-antimony separation operation, and separated concentrate and separated tailings are generated.
And step A7, separating and concentrating, namely adding 5g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium into the separated concentrate, carrying out antimony concentration 1 to generate antimony concentration 1 concentrate and antimony concentration 1 middling, adding 2g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium into the antimony concentration 1 concentrate, carrying out antimony concentration 2 operation to generate antimony concentrate and antimony concentration 2 middling, returning the antimony concentration 1 middling to gold-antimony separation feeding, and returning the antimony concentration 2 middling to the antimony concentration 1 feeding.
And step A8, separating and scavenging, namely adding 20g/t of lead nitrate into the separated tailings, 20g/t of an antimony collector, carrying out antimony scavenging 1 to generate an antimony scavenging 1 middling and an antimony scavenging 1 tailings, adding 10g/t of lead nitrate into the antimony scavenging 1 tailings, carrying out an antimony scavenging 2 operation to generate an antimony scavenging 2 middling and a first gold concentrate, returning the antimony scavenging 1 middling to gold-antimony separation feeding, and returning the antimony scavenging 2 middling to the antimony scavenging 1 feeding.
Step A9, the equal floatable roughing tailings are added with 50g/t of lead nitrate, 50g/t of antimony collector and 4g/t of foaming agent, the equal floatable roughing 1 operation is carried out, equal floatable scavenging 1 middlings and equal floatable scavenging 1 tailings are generated, the equal floatable scavenging 1 tailings are added with 20g/t of lead nitrate, 20g/t of antimony collector and 4g/t of foaming agent, the equal floatable scavenging 2 middlings and equal floatable scavenging 2 tailings are generated, the equal floatable scavenging 1 middlings are returned to the equal floatable roughing feed ore, the equal floatable scavenging 2 middlings are returned to the equal floatable scavenging 1 feed ore, and the equal floatable scavenging 2 tailings are used as gold roughing feed ore.
Procedure a10, jin Cuxuan: 50g/t of copper sulfate, 100g/t of amyl xanthate and 20g/t of foaming agent are added for gold roughing 1 operation to generate gold roughing 1 concentrate and roughing 1 tailings, 30g/t of copper sulfate and 50g/t of amyl xanthate are added to Jin Cuxuan tailings for gold roughing 2 operation to generate gold roughing 2 concentrate and roughing 2 tailings.
And (3) step A11, gold fine selection: and combining the gold roughing 1 concentrate and the gold roughing 2 concentrate, carrying out gold concentration 1 to generate gold concentration 1 concentrate and gold concentration 1 middling, carrying out gold concentration 2 operation on the gold concentration 1 concentrate to generate second gold concentrate and gold concentration 2 middling, returning the gold concentration 1 middling to the gold roughing feeding, and returning the gold concentration 2 middling to the gold concentration 1 feeding.
Step a12, jin Sao: adding 15g/t of copper sulfate, 25g/t of amyl xanthate and 4g/t of foaming agent into Jin Cuxuan tailings, performing gold scavenging 1 to generate gold scavenging 1 middling 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 middling and tailings, returning the gold scavenging 1 middling to the gold scavenging 2 middling, and returning the gold scavenging 2 middling to the gold scavenging 1 middling.
The Jin Tikuang gold and antimony are complex in mutual embedding relationship, and the floatability difference of gold-bearing minerals is large. According to the ore properties, the process of 'floatable separation of gold and antimony and the like-floatable tailings for strengthening gold separation' in the embodiment 1 is adopted for treatment, and 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 circuit test results
As can be seen from Table 1, the beneficiation method for gold-antimony ore provided in embodiment 1 can realize comprehensive recovery and efficient separation of cash and antimony, has stable flow structure and good beneficiation index, and improves economic benefit and comprehensive utilization rate of resources of enterprises.
Example 2
The embodiment provides a beneficiation method of gold-antimony ore, which is used for gold-antimony ore containing 1.94g/t of gold and 1.02% of antimony. Gold minerals in the ore are mainly natural gold and silver gold ores, and gold-carrying minerals are mainly pyrite, arsenopyrite and the like; the antimony mineral is mainly stibium ore, the other metal mineral is mainly pyrite and white iron ore, and the other metal mineral is second toxic sand, and the other metal mineral is small amount of rutile, sphalerite, galena, chalcopyrite, limonite and the like. The nonmetallic minerals are mainly quartz, and secondly muscovite and kaolinite, and the beneficiation method of the gold antimony ore specifically comprises the following steps of:
step A1, grinding: grinding Jin Tikuang raw ore, wherein the grinding fineness is 80% of the size fraction of-0.074 mm, so as to obtain raw ore pulp.
Step A2, adjusting the pH value of ore pulp: oxalic acid 1000g/t is added into the ore pulp, stirred for 1 minute, and the pH value of the ore pulp is regulated to 5.8.
And step A3, adding 150g/t of lead nitrate serving as an antimony mineral activator, and stirring for 2 minutes.
Step A4, floatable roughing; adding 100g/t of antimony collector sodium diethyl dithiocarbamate, 30g/t of foaming agent terpineol, and carrying out iso-floatable roughing to obtain iso-floatable roughing concentrate and iso-floatable roughing tailings.
Step A5, and the like can be selected by floatation: the method comprises the steps of carrying out the iso-floatable rough concentration on iso-floatable rough concentration ore to generate iso-floatable concentration 1 ore concentrate and iso-floatable concentration 1 middling, carrying out the iso-floatable concentration 2 on iso-floatable concentration 1 ore concentrate to generate iso-floatable concentration 2 ore concentrate and iso-floatable concentration 2 middling, returning the iso-floatable concentration 1 middling to the iso-floatable rough concentration feeding ore, and returning the iso-floatable concentration 2 middling to the iso-floatable concentration 1 feeding ore.
Step A6, gold-antimony separation: after 2 concentrate which can be floated and carefully selected is ground again until the concentration is minus 0.038mm and accounts for 85 percent, 30g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium and 20g/t of sodium sulfite are added for gold-antimony separation operation, so as to generate separated concentrate and separated tailings.
And step A7, separating and concentrating, namely adding 10g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium into the separated concentrate 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 into 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-antimony separation feeding ore, and returning the antimony concentration 2 middling to the antimony concentration 1 middling.
And step A8, separating and scavenging, namely adding 20g/t of lead nitrate into the separated tailings, 10g/t of an antimony collector, carrying out antimony scavenging 1 to generate an antimony scavenging 1 middling and an antimony scavenging 1 tailings, adding 10g/t of lead nitrate into the antimony scavenging 1 tailings, carrying out an antimony scavenging 2 operation to generate an antimony scavenging 2 middling and a first gold concentrate, returning the antimony scavenging 1 middling to gold-antimony separation feeding, and returning the antimony scavenging 2 middling to the antimony scavenging 1 feeding.
Step A9, the equal floatable roughing tailings are added with 70g/t of lead nitrate, 50g/t of antimony collecting agent and 8g/t of foaming agent, the equal floatable roughing 1 operation is carried out, equal floatable scavenging 1 middlings and equal floatable scavenging 1 tailings are generated, the equal floatable scavenging 1 tailings are added with 30g/t of lead nitrate, 20g/t of antimony collecting agent and 4g/t of foaming agent, the equal floatable scavenging 2 middlings and equal floatable scavenging 2 tailings are generated, the equal floatable scavenging 1 middlings are returned to the equal floatable roughing feeding ore, the equal floatable scavenging 2 middlings are returned to the equal floatable scavenging 1 feeding ore, and the equal floatable scavenging 2 tailings are used as gold roughing feeding ore.
Procedure a10, jin Cuxuan: 100g/t of copper sulfate, 80g/t of amyl xanthate and 20g/t of foaming agent are added for gold roughing 1 operation to generate gold roughing 1 concentrate and roughing 1 tailings, 50g/t of copper sulfate and 40g/t of amyl xanthate are added into Jin Cuxuan tailings for gold roughing 2 operation to generate gold roughing 2 concentrate and roughing 2 tailings.
And (3) step A11, gold fine selection: and combining the gold roughing 1 concentrate and the gold roughing 2 concentrate, carrying out gold concentration 1 to generate gold concentration 1 concentrate and gold concentration 1 middling, carrying out gold concentration 2 operation on the gold concentration 1 concentrate to generate gold concentrate 2 and gold concentration 2 middling, returning the gold concentration 1 middling to the gold roughing feeding ore, and returning the gold concentration 2 middling to the gold concentration 1 feeding ore.
Step a12, jin Sao: adding 20g/t of copper sulfate and 10g/t of amyl xanthate into Jin Cuxuan tailings, 20g/t of amyl xanthate and 4g/t of foaming agent, carrying out gold scavenging 1 to generate gold scavenging 1 middling and gold scavenging 1 tailings, adding 10g/t of copper sulfate and 10g/t of amyl xanthate into the gold scavenging 1 tailings, carrying out gold scavenging 2 operation to generate gold scavenging 2 middling and tailings, returning the gold scavenging 1 middling to the gold scavenging 2 middling, and returning the gold scavenging 2 middling to the gold scavenging 1 middling.
The Jin Tikuang gold and antimony are mutually embedded in complex relationship, are treated by adopting a process of 'gold and antimony and other floatable separation-and other floatable tailings intensified gold separation' according to ore properties, and are detected by a mineral separation closed-circuit test, and mineral separation indexes are shown in table 2:
table 2 closed circuit test results
Example 3
The embodiment provides a beneficiation method of gold-antimony ore, which is used for gold-antimony ore containing 2.85g/t of gold and 0.89% of antimony. Gold minerals in the ore mainly comprise natural gold, silver gold ore and tellurium gold silver ore, and gold-carrying minerals mainly comprise pyrite, arsenopyrite and the like; the antimony mineral is mainly stibium-bearing ore, a small amount of stibium-bearing powder, other metal mineral is mainly pyrite, and other metal mineral is also small amount of arsenopyrite, pyrrhotite, sphalerite, galena, chalcopyrite, limonite, magnetite 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: grinding Jin Tikuang raw ore, wherein the grinding fineness is 60% of the size fraction of-0.074 mm, so as to obtain raw ore pulp.
Step A2, adjusting the pH value of ore pulp: sulfuric acid 1000g/t is added into the ore pulp, stirred for 1 minute, and the pH value of the ore pulp is regulated to 6.8.
And step A3, adding 150g/t of lead nitrate serving as an antimony mineral activator, and stirring for 2 minutes.
Step A4, floatable roughing; adding 120g/t of antimony collector sodium diethyl dithiocarbamate and 40g/t of foaming agent terpineol, and carrying out iso-floatable roughing to obtain iso-floatable roughing concentrate and iso-floatable roughing tailings.
Step A5, and the like can be selected by floatation: the method comprises the steps of carrying out the iso-floatable rough concentration on iso-floatable rough concentration ore to generate iso-floatable concentration 1 ore concentrate and iso-floatable concentration 1 middling, carrying out the iso-floatable concentration 2 on iso-floatable concentration 1 ore concentrate to generate iso-floatable concentration 2 ore concentrate and iso-floatable concentration 2 middling, returning the iso-floatable concentration 1 middling to the iso-floatable rough concentration feeding ore, and returning the iso-floatable concentration 2 middling to the iso-floatable concentration 1 feeding ore.
Step A6, gold-antimony separation: after 2 concentrate which can be floated and carefully selected is ground again until the concentration is 70 percent of-0.038 mm, 50g/t of disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid is added for gold-antimony separation operation, and separated concentrate and separated tailings are generated.
And step A7, separating and concentrating, namely adding 20g/t of 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylic acid disodium into the separated concentrate, carrying out 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-dicarboxylic acid disodium into the antimony concentration 1 concentrate, carrying out antimony concentration 2 operation to generate antimony concentrate and antimony concentration 2 middling, returning the antimony concentration 1 middling to gold-antimony separation feeding, and returning the antimony concentration 2 middling to the antimony concentration 1 feeding.
And step A8, separating and scavenging, namely adding 20g/t of lead nitrate into the separated tailings, 20g/t of an antimony collector, carrying out antimony scavenging 1 to generate antimony scavenging 1 middling and antimony scavenging 1 tailings, adding 10g/t of lead nitrate into the antimony scavenging 1 tailings, carrying out antimony scavenging 2 operation to generate antimony scavenging 2 middling and gold concentrate 1, returning the antimony scavenging 1 middling to gold-antimony separation feeding, and returning the antimony scavenging 2 middling to the antimony scavenging 1 feeding.
Step A9, the equal floatable roughing tailings are added with 50g/t of lead nitrate, 50g/t of antimony collector and 10g/t of foaming agent, the equal floatable roughing 1 operation is carried out, equal floatable scavenging 1 middlings and equal floatable scavenging 1 middlings are generated, the equal floatable scavenging 1 tailings are added with 20g/t of lead nitrate, 20g/t of antimony collector and 4g/t of foaming agent, the equal floatable scavenging 2 middlings and equal floatable scavenging 2 tailings are generated, the equal floatable scavenging 1 middlings are returned to the equal floatable roughing feed ore, the equal floatable scavenging 2 middlings are returned to the equal floatable scavenging 1 feed ore, and the equal floatable scavenging 2 tailings are used as gold roughing feed ore.
Procedure a10, jin Cuxuan: 100g/t of copper sulfate, 100g/t of amyl xanthate and 20g/t of foaming agent are added for gold roughing 1 operation to generate gold roughing 1 concentrate and roughing 1 tailings, 50g/t of copper sulfate and 50g/t of amyl xanthate are added to Jin Cuxuan tailings for gold roughing 2 operation to generate gold roughing 2 concentrate and roughing 2 tailings.
And (3) step A11, gold fine selection: and combining the gold roughing 1 concentrate and the gold roughing 2 concentrate, carrying out gold concentration 1 to generate gold concentration 1 concentrate and gold concentration 1 middling, carrying out gold concentration 2 operation on the gold concentration 1 concentrate to generate gold concentrate 2 and gold concentration 2 middling, returning the gold concentration 1 middling to the gold roughing feeding ore, and returning the gold concentration 2 middling to the gold concentration 1 feeding ore.
Step a12, jin Sao: adding 25g/t of copper sulfate into Jin Cuxuan tailings, 25g/t of amyl xanthate and 4g/t of foaming agent, carrying out gold scavenging 1 to generate gold scavenging 1 middling and gold scavenging 1 tailings, adding 10g/t of copper sulfate into the gold scavenging 1 tailings, carrying out gold scavenging 2 operation to generate gold scavenging 2 middling and tailings, returning the gold scavenging 1 middling to the gold scavenging 2 middling, and returning the gold scavenging 2 middling to the gold scavenging 1 middling.
The Jin Tikuang gold and antimony are mutually embedded in complex relationship, are treated by adopting a process of 'gold and antimony and other floatable separation-and other floatable tailings intensified gold separation' according to ore properties, and are detected by a mineral separation closed-circuit test, and mineral separation indexes are shown in Table 3:
TABLE 3 closed circuit test results
Comparative example 1
The comparative example provides a mineral separation method of gold-antimony ore with the priority of antimony-gold sequence, which is used for gold-antimony ore containing 2.16g/t of gold and 0.67% of antimony. Gold minerals in the ore mainly comprise natural gold, silver gold ore and tellurium gold silver ore, and gold-carrying minerals mainly comprise pyrite, arsenopyrite and the like; the antimony mineral is mainly stibium ore, the other metal mineral is mainly limonite, and the other metal mineral is pyrite, and the other metal mineral is small amount of arsenopyrite, zinc blende, 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: grinding Jin Tikuang raw ore, wherein the grinding fineness is 90% of the size fraction of-0.074 mm, so as to obtain raw ore pulp.
And step A2, adding 200g/t of lead nitrate serving as an antimony mineral activator, and stirring for 2 minutes.
Step A3, antimony is subjected to preferential roughing; and adding 100g/t of sodium diethyl dithiocarbamate of an antimony collector, 20g/t of terpineol of a foaming agent, and carrying out antimony preferential roughing to obtain antimony preferential roughing concentrate and antimony preferential roughing tailings.
Step A4, preferentially selecting antimony: the antimony preferential roughing concentrate is subjected to antimony preferential concentration 1 to generate antimony preferential concentration 1 concentrate and antimony preferential concentration 1 middling, the antimony preferential concentration 1 concentrate is subjected to antimony preferential concentration 2 to generate antimony concentrate and antimony preferential concentration 2 middling, the antimony preferential concentration 1 middling is returned to the antimony preferential roughing feed, and the antimony preferential concentration 2 middling is returned to the antimony preferential concentration 1 feed.
And step A5, performing antimony preferential scavenging, namely adding 30g/t of lead nitrate into the antimony preferential roughing tailings, 50g/t of an antimony collector and 4g/t of a foaming agent for performing antimony preferential scavenging 1 operation to generate antimony preferential scavenging 1 middlings and antimony preferential scavenging 1 tailings, adding 20g/t of the antimony collector into the antimony preferential scavenging 1 tailings, performing antimony preferential scavenging 2 operation by 4g/t of the foaming agent to generate antimony preferential scavenging 2 middlings and antimony preferential scavenging 2 tailings, returning the antimony preferential scavenging 1 middlings to the antimony preferential roughing feed, returning the antimony preferential scavenging 2 middlings to the antimony preferential scavenging 1 middlings, and taking the antimony preferential scavenging 2 tailings as gold roughing feed.
Procedure A6, jin Cuxuan: 1500g/t of sulfuric acid, 100g/t of copper sulfate, 120g/t of amyl xanthate and 20g/t of foaming agent are added for gold roughing 1 operation, gold roughing 1 concentrate and roughing 1 tailings are generated, 50g/t of copper sulfate is added to Jin Cuxuan tailings, 60g/t of amyl xanthate is added for gold roughing 2 operation, and gold roughing 2 concentrate and roughing 2 tailings are generated.
And (A7) gold fine selection: and combining the gold roughing 1 concentrate and the gold roughing 2 concentrate, carrying out gold concentration 1 to generate gold concentration 1 concentrate and gold concentration 1 middling, carrying out gold concentration 2 operation on the gold concentration 1 concentrate to generate gold concentrate and gold concentration 2 middling, returning the gold concentration 1 middling to the gold roughing feeding ore, and returning the gold concentration 2 middling to the gold concentration 1 feeding ore.
Step A8, jin Sao: adding 20g/t of copper sulfate and 30g/t of amyl xanthate into Jin Cuxuan tailings, performing gold scavenging 1 to generate gold scavenging 1 middling 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 operation to generate gold scavenging 2 middling and tailings, returning the gold scavenging 1 middling to the gold scavenging 2 middling, and returning the gold scavenging 2 middling to the gold scavenging 1 middling.
According to the ore properties, the process of 'antimony-gold sequential priority flotation' is adopted for treatment, and the ore dressing indexes are detected through a dressing closed circuit test, and are shown in table 4:
TABLE 4 closed circuit test results
Comparative example 2
The comparative example provides a mineral separation method of gold-antimony ore by adopting the sequence priority of antimony and gold, which is used for gold-antimony ore containing 1.74g/t of gold and 1.09% of antimony. Gold minerals in the ore are mainly natural gold, and gold-carrying minerals are mainly pyrite, arsenopyrite and the like; the antimony mineral is mainly stibium-bearing ore, and there is trace stibium-bearing flower, and the other metal mineral is limonite, sphalerite, galena, chalcopyrite, etc. The nonmetallic minerals are mainly quartz, and secondly muscovite and kaolinite, and the beneficiation method of the gold antimony ore specifically comprises the following steps of:
step A1, grinding: grinding Jin Tikuang raw ore, wherein the grinding fineness is 65% of the size fraction of-0.074 mm, so as to obtain raw ore pulp.
And step A2, adding 1000g/t of gold-bearing mineral inhibitor sodium sulfite, and stirring for 2 minutes.
And step A3, adding 100g/t of lead nitrate serving as an antimony mineral activator, and stirring for 2 minutes.
Step A4, antimony is subjected to preferential roughing; and adding 100g/t of sodium diethyl dithiocarbamate of an antimony collector, 30g/t of terpineol of a foaming agent, and carrying out antimony preferential roughing to obtain antimony preferential roughing concentrate and antimony preferential roughing tailings.
Step A5, antimony is preferentially selected: 200g/t of sodium sulfite is added into the antimony preferential roughing concentrate to carry out antimony preferential concentration 1, so as to generate antimony preferential concentration 1 concentrate and antimony preferential concentration 1 middling, 100g/t of sodium sulfite is added into the antimony preferential concentration 1 concentrate to carry out antimony preferential concentration 2, so as to generate antimony concentrate and antimony preferential concentration 2 middling, the antimony preferential concentration 1 middling is returned to the antimony preferential roughing feeding, and the antimony preferential concentration 2 middling is returned to the antimony preferential concentration 1 middling.
And step A6, performing antimony preferential scavenging, namely adding 50g/t of lead nitrate into the antimony preferential roughing tailings, 50g/t of an antimony collector, performing antimony preferential scavenging 1 operation by 4g/t of a foaming agent, generating antimony preferential scavenging 1 middlings and antimony preferential scavenging 1 tailings, adding 20g/t of the antimony collector into the antimony preferential scavenging 1 tailings, performing antimony preferential scavenging 2 operation by 4g/t of the foaming agent, generating antimony preferential scavenging 2 middlings and antimony preferential scavenging 2 tailings, returning the antimony preferential scavenging 1 middlings to the antimony preferential roughing feed, returning the antimony preferential scavenging 2 middlings to the antimony preferential scavenging 1 feed, and taking the antimony preferential scavenging 2 tailings as gold roughing feed.
Procedure A7, jin Cuxuan: after the gold roughing ore feeding is ground again until the particle size of-0.074 mm accounts for 80%, 100g/t of copper sulfate, 100g/t of amyl xanthate, 20g/t of butylammonium black and 10g/t of foaming agent are added for gold roughing 1 operation, so as to generate gold roughing 1 concentrate and roughing 1 tailings, 50g/t of copper sulfate is added to Jin Cuxuan tailings, 60g/t of amyl xanthate and 10g/t of butylammonium black are added for gold roughing 2 operation, so that gold roughing 2 concentrate and roughing 2 tailings are generated.
And (C) step A8, gold fine selection: and combining the gold roughing 1 concentrate and the gold roughing 2 concentrate, carrying out gold concentration 1 to generate gold concentration 1 concentrate and gold concentration 1 middling, carrying out gold concentration 2 operation on the gold concentration 1 concentrate to generate gold concentrate and gold concentration 2 middling, returning the gold concentration 1 middling to the gold roughing feeding ore, and returning the gold concentration 2 middling to the gold concentration 1 feeding ore.
Step A9, jin Sao: adding 20g/t of copper sulfate and 20g/t of amyl xanthate into Jin Cuxuan tailings, performing gold scavenging 1 to generate gold scavenging 1 middling 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 middling and tailings, returning the gold scavenging 1 middling to the gold scavenging 2 middling, and returning the gold scavenging 2 middling to the gold scavenging 1 middling.
According to the ore properties, the process of 'antimony-gold sequential priority flotation' is adopted for treatment, and the ore dressing indexes are detected through a closed-circuit ore dressing test, and are shown in Table 5:
TABLE 5 closed circuit test results
As can be seen from the ore dressing index of the comparative example, the traditional antimony-gold sequential priority flotation process is adopted, the antimony grade of the obtained antimony concentrate is only about 30%, some antimony concentrate can not even reach the lowest standard of the antimony concentrate, the quality is not ideal, meanwhile, the gold content in the antimony concentrate is higher, and the sales of the antimony concentrate and the price coefficient of antimony and gold during sales are influenced; under the condition of no effective separation inhibitor, in order to ensure the quality of the antimony concentrate, the antimony mineral is not activated sufficiently during the separation of the antimony, so that the grade of the antimony in the gold concentrate is higher, the recovery rate of the antimony is influenced, and the recovery rate of the gold is influenced when the antimony belongs to harmful impurities in the gold concentrate. The process and the separation inhibitor solve the problems, and obtain high-quality antimony concentrate and gold concentrate, wherein the antimony grade of the antimony concentrate is about 50%, the antimony content of the gold concentrate is obviously reduced; meanwhile, the recovery rate of gold is improved, and the beneficiation high-efficiency separation and comprehensive recovery of gold and antimony are realized.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution 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 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 corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Furthermore, those skilled in the art will appreciate that while some embodiments herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the present application and form different embodiments. For example, in the claims below, 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 (11)
1. A beneficiation method for gold antimony ore, which is characterized by comprising the following steps:
grinding the raw ore containing gold 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 for equal floatable roughing to obtain equal floatable roughing concentrate and equal floatable roughing tailings;
performing equal floatable concentration on the equal floatable rough concentrate to obtain equal floatable concentrate and equal floatable concentrate middlings; performing gold-antimony separation on the floatable concentrate to obtain gold-antimony separated concentrate and gold-antimony separated tailings, performing antimony concentration on the Jin Ti separated concentrate to obtain antimony concentrate, and performing antimony scavenging on the Jin Ti separated tailings to obtain first gold concentrate;
adding the antimony mineral activating agent, the antimony mineral collecting agent and the foaming agent into the equifloatable coarse tailings to perform equifloatable scavenging to obtain equifloatable scavenged tailings and equifloatable scavenged tailings;
performing gold roughing on the floatable scavenger tailings to obtain Jin Cuxuan concentrate and Jin Cuxuan tailings, performing gold concentration on the Jin Cuxuan concentrate to obtain second gold concentrate, and performing gold scavenging on the Jin Cuxuan tailings to obtain final tailings;
and returning the floatable middlings and the floatable scavenging 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 0.074mm or less and the fraction thereof is 55% -90%.
3. The beneficiation process of gold antimony ore according to claim 1, wherein the pH modifier 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 dianilino dithiophosphoric acid;
the foaming agent comprises one or more of terpineol, methyl isobutyl carbinol and methoxy polypropylene glycol.
4. A beneficiation process of gold antimony ore according to claim 3, wherein the pH adjuster is added at a pH of the system ranging from 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 consumption of the foaming agent is 10-40g per ton of raw ore.
5. The beneficiation method of gold antimony ore according to claim 1, further comprising:
before the gold-antimony separation is carried out, regrinding the floatable concentrate;
the fineness of the regrind treatment is less than or equal to 0.038mm, and the grain size fraction accounts for 60% -90%.
6. The method for beneficiation of gold antimony ore according to claim 5, wherein the Jin Ti separation and the antimony beneficiation are each independently added with inhibitors of gold bearing minerals;
the inhibitor comprises a cycloalkane polycarboxylate and/or sulfite; and adding the antimony mineral activator and the antimony mineral collector during the antimony scavenging.
7. The method for beneficiation of gold antimony ore according to claim 6, wherein the cycloalkane polycarboxylate comprises disodium 2, 3-bicyclo [2.2.1] hept-5-ene-2, 3-dicarboxylate.
8. The method for beneficiation of gold antimony ore according to claim 6, wherein the inhibitor is added in an amount of 5 to 50g per ton of raw ore when the gold antimony separation is performed; the amount of the inhibitor added during the antimony concentration is 2-20g per ton of raw ore;
the amount of the antimony mineral activating agent added during the antimony scavenging is 10-50g per ton of raw ore, and the amount of the antimony mineral collecting agent added is 10-30g per ton of raw ore.
9. The method for beneficiation of gold antimony ore according to claim 1, wherein a gold activator, a gold high efficiency collector and the foaming agent are added at the time of Jin Cuxuan;
the activating agent comprises copper sulfate, and the gold efficient collector is high-grade xanthate and/or di-n-butyl ammonium dithiophosphate;
a pH adjuster is also added at Jin Cuxuan, and the pH adjuster comprises oxalic acid and/or sulfuric acid.
10. The method for beneficiation of gold antimony ore according to claim 9, wherein the Jin Cuxuan is performed with an amount of gold activator added in an amount of 20-100g per ton of raw ore, the gold high-efficiency collector added in an amount of 50-200g per ton of raw ore, the foamer added in an amount of 10-50g per ton of raw ore, and a pH adjuster added at a system pH of 5.5-7.
11. The method of beneficiation of gold antimony ore according to any one of claims 1 to 10, wherein the iso-floatable roughing is performed 1 to 2 times, the iso-floatable scavenging is performed 2 to 3 times, the antimony beneficiation is performed 2 to 3 times, the antimony scavenging is performed 2 to 3 times, the Jin Cuxuan is performed 1 to 2 times, the gold scavenging is performed 2 to 3 times, and the gold beneficiation is performed 2 to 3 times.
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| 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 |
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