CN115921101A - Flotation method of arsenic-containing gold-antimony symbiotic ore - Google Patents
Flotation method of arsenic-containing gold-antimony symbiotic ore Download PDFInfo
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- CN115921101A CN115921101A CN202211538393.2A CN202211538393A CN115921101A CN 115921101 A CN115921101 A CN 115921101A CN 202211538393 A CN202211538393 A CN 202211538393A CN 115921101 A CN115921101 A CN 115921101A
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- 238000000034 method Methods 0.000 title claims abstract description 63
- 238000005188 flotation Methods 0.000 title claims abstract description 49
- KAPYVWKEUSXLKC-UHFFFAOYSA-N [Sb].[Au] Chemical compound [Sb].[Au] KAPYVWKEUSXLKC-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 229910052785 arsenic Inorganic materials 0.000 title claims abstract description 19
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 title claims abstract description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 60
- 239000010931 gold Substances 0.000 claims abstract description 58
- 229910052737 gold Inorganic materials 0.000 claims abstract description 56
- 239000012141 concentrate Substances 0.000 claims abstract description 55
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims abstract description 48
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 37
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 11
- 230000003213 activating effect Effects 0.000 claims abstract description 10
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 33
- 230000002000 scavenging effect Effects 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 13
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims description 12
- 239000012991 xanthate Substances 0.000 claims description 12
- 238000010494 dissociation reaction Methods 0.000 claims description 11
- 230000005593 dissociations Effects 0.000 claims description 11
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 9
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 9
- RLJMLMKIBZAXJO-UHFFFAOYSA-N lead nitrate Chemical compound [O-][N+](=O)O[Pb]O[N+]([O-])=O RLJMLMKIBZAXJO-UHFFFAOYSA-N 0.000 claims description 7
- NLRKUCOJGROPHS-UHFFFAOYSA-N 6-hydroxy-7-methoxy-3h-2-benzofuran-1-one Chemical compound C1=C(O)C(OC)=C2C(=O)OCC2=C1 NLRKUCOJGROPHS-UHFFFAOYSA-N 0.000 claims description 5
- 239000004088 foaming agent Substances 0.000 claims description 4
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 4
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 4
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims 2
- 229910052683 pyrite Inorganic materials 0.000 abstract description 39
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 abstract description 39
- 239000011028 pyrite Substances 0.000 abstract description 39
- 238000011084 recovery Methods 0.000 abstract description 18
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 17
- 239000011707 mineral Substances 0.000 abstract description 17
- 239000012535 impurity Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 239000002994 raw material Substances 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910001424 calcium ion Inorganic materials 0.000 abstract description 4
- 229910001425 magnesium ion Inorganic materials 0.000 abstract description 4
- 150000002739 metals Chemical class 0.000 abstract description 4
- 230000002411 adverse Effects 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract description 3
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052959 stibnite Inorganic materials 0.000 description 33
- IHBMMJGTJFPEQY-UHFFFAOYSA-N sulfanylidene(sulfanylidenestibanylsulfanyl)stibane Chemical compound S=[Sb]S[Sb]=S IHBMMJGTJFPEQY-UHFFFAOYSA-N 0.000 description 33
- 239000006260 foam Substances 0.000 description 18
- 229910052964 arsenopyrite Inorganic materials 0.000 description 12
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 12
- 239000003814 drug Substances 0.000 description 6
- 239000012190 activator Substances 0.000 description 5
- 238000003723 Smelting Methods 0.000 description 4
- 239000002270 dispersing agent Substances 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 239000008396 flotation agent Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- HQABUPZFAYXKJW-UHFFFAOYSA-O butylazanium Chemical compound CCCC[NH3+] HQABUPZFAYXKJW-UHFFFAOYSA-O 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005456 ore beneficiation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
A flotation method of arsenic-containing gold-antimony symbiotic ore comprises the steps of dissociating the ore to obtain a selected ore pulp, and then carrying out an equal floatable process on the selected ore pulp to obtain antimony gold concentrate and gold-antimony concentrate; the flotation reagent used in the roughing I of the floatable process comprises sodium carbonate. The method adopts an equal floatable process, can effectively eliminate the influence of harmful ions such as calcium ions and magnesium ions in ore pulp in time by adding sodium carbonate in the roughing I, has a dispersing effect on the ore mud, and can weaken or eliminate the adverse influence of the ore mud on flotation so as to obtain low-impurity, high-gold and high-antimony raw material antimony-gold concentrate, in addition, the sodium carbonate is also an activating agent of pyrite, and the sodium carbonate added in the roughing I can activate the pyrite in time so as to ensure that the pyrite can float upwards in time and rapidly; then floating other gold-loaded minerals with poor floatability together through a roughing II to obtain the gold-antimony concentrate, so that the resource recovery rate of the useful metals in the ores can be improved.
Description
Technical Field
The invention relates to the technical field of mineral separation, in particular to a flotation method of arsenic-containing gold-antimony-containing symbiotic ore.
Background
The gold-antimony symbiotic ore in nature has simpler mineral composition, the gold mineral in the ore is mainly natural gold, the natural gold is closely related to stibnite and pyrite in the ore, and gangue mineral and arsenopyrite are used in the ore.
In the process of carrying out an ore beneficiation process, there are two most basic procedures: the first is dissociation, namely crushing and grinding the large ore blocks to dissociate various useful mineral particles from the ore; and secondly, sorting, namely sorting the dissociated mineral particles into different products according to the difference of the chemical properties of the materials.
In the existing gold-antimony symbiotic ore separation process, flotation separation is generally adopted. The main principle of flotation is to add flotation agent to regulate the floatability of minerals and improve the property of bubbles, so as to control the flotation process. The general names of the types, dosage, preparation, addition positions and modes of the required medicaments in the production process are called a medicament system.
In the existing flotation process, stibnite, pyrite and arsenopyrite in the ore have close symbiotic relationship, and the embedding relationship of the stibnite, the pyrite and the arsenopyrite is complex. If the prior antimony flotation process is adopted, pyrite and arsenopyrite are difficult to inhibit in the antimony flotation process and enter antimony concentrate, the quality of the antimony concentrate is affected, and the recovery rate of antimony and gold in the process is low; if a preferential gold separation process is adopted, stibnite is difficult to inhibit in the gold flotation process and enters gold concentrate to influence the gold concentrate, the gold grade is lower, the arsenic grade is overhigh in the subsequent antimony separation process, and the overall recovery rate of the process is low; if a mixed flotation process is adopted, the stibnite, the arsenic pyrite containing gold and the pyrite enter mixed concentrate together, so that the arsenic grade in the concentrate is high, and the gold and antimony grades are low.
Based on the reasons, the existing flotation process adopts a part of preferential antimony selection process and a gold-antimony mixed flotation process, antimony gold concentrate is obtained through the part of preferential antimony selection process, the antimony gold concentrate is a raw material of a subsequent acid antimony smelting process, the gold grade in the antimony gold concentrate is 30g/t, the antimony grade is 58%, and the arsenic grade is 0.8%; and the flotation tailings are subjected to a gold-antimony mixed flotation process to obtain gold-antimony concentrate, wherein the gold grade in the gold-antimony concentrate is 35g/t, the antimony grade is 8%, and the arsenic grade is 2.3%. In the total recovery rate of the concentrate obtained by the two processes, the gold recovery rate is 87.3 percent, and the antimony recovery rate is 97.3 percent.
Therefore, the gold grade of the antimony gold concentrate obtained in the prior art needs to be further improved, and other impurities are still easily mixed in the antimony gold concentrate; the resource recovery rate of useful metals in the prior art needs to be further improved.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a flotation method of arsenic-containing gold-antimony symbiotic ore, which can provide low-impurity, high-gold and high-antimony raw material antimony-gold concentrate for antimony smelting by a subsequent acid method and improve the total recovery rate of useful metal resources.
In order to solve the technical problems, the technical scheme provided by the invention is as follows: a flotation method of arsenic-containing gold-antimony symbiotic ore comprises the steps of dissociating the ore to obtain a selected ore pulp, and then carrying out an equal floatable process on the selected ore pulp to obtain antimony gold concentrate and gold-antimony concentrate;
the equal floatable process comprises the steps of obtaining antimony gold concentrate through rough concentration I, antimony concentration I and antimony concentration II; the tailings obtained by the roughing I are subjected to roughing II, gold dressing I, gold dressing II, scavenging I and scavenging II to obtain gold-antimony concentrate and final tailings;
the flotation reagent used in the roughing I comprises sodium carbonate, an activating agent, a combined collecting agent and a foaming agent.
In the flotation method, preferably, sodium carbonate in the flotation agent used in the roughing I is added into the ore pulp in a dissociation process.
In the flotation method, preferably, the activating agent is lead nitrate.
In the flotation method, preferably, the combined collector adopts Y89-3 xanthate and butylammonium nigride.
In the flotation method, preferably, the flotation reagent used in the roughing I further comprises sodium hexametaphosphate.
In the flotation method, preferably, the flotation agent used in the roughing II comprises sodium carbonate, copper sulfate, MA-2 xanthate and No. 2 oil.
Compared with the prior art, the invention has the advantages that: the method adopts an equal-floatable process, firstly, the stibnite and the pyrite with better flotability are floated preferentially through the roughing I, meanwhile, the sodium carbonate is added into the roughing I, the sodium carbonate can effectively eliminate the influence of harmful ions such as calcium and magnesium ions in ore pulp in time, has a dispersing effect on the slime, and can weaken or eliminate the adverse influence of the slime on flotation, so that the low-impurity, high-gold and high-antimony raw material stibnite concentrate is obtained, and the sodium carbonate is also an activating agent of the pyrite, so that the pyrite can be activated in the roughing I, and the pyrite can be ensured to float rapidly in time; then, the gold-bearing minerals of pyrite, arsenopyrite and stibnite which are not dissociated by monomers and have poor flotability float together through the rough separation II to obtain gold-antimony concentrate, and the resource recovery rate of useful metals in the ores is improved.
Drawings
FIG. 1 is a schematic diagram of the flotation process flow in example 1.
Detailed Description
In order to facilitate an understanding of the invention, reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings, and the scope of the invention is not limited to the specific embodiments described below.
It should be particularly noted that when an element is referred to as being "fixed to," secured to, "connected to or communicated with" another element, it can be directly fixed to, secured to, connected to or communicated with the other element or indirectly fixed to, secured to, connected to or communicated with the other element through other intermediate connecting members. The terms "transverse," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like hereinafter refer to an orientation or positional relationship as shown in the drawings for the purpose of describing the invention only, and do not indicate or imply that the referenced elements must have a particular orientation and, therefore, are not to be considered limiting of the scope of the invention.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.
Example 1
As shown in fig. 1, the flotation method for the arsenic-containing gold-antimony symbiotic ore in this embodiment includes dissociating the ore to obtain a feed pulp, and subjecting the feed pulp to an equal-flotation process to obtain an antimony-gold concentrate and a gold-antimony concentrate; the dissociation can be carried out by crushing and grinding the ore by adopting the existing crusher, ball mill and other equipment, and the details are not repeated.
In this example, after the ore is dissociated, the ore particles in the ore pulp are less than 65% of the size fraction of 0.074mm, the dissociation of the pyrite and arsenopyrite monomers is insufficient, the dissociation degree is only 70.23%, the dissociation of the stibnite monomers is sufficient, and the dissociation degree is 85%.
The medium floatable process in the embodiment comprises the steps of obtaining antimony gold concentrate through roughing I, antimony concentration I and antimony concentration II; and obtaining gold-antimony concentrate and final tailings from the tailings obtained by the roughing I through a roughing II, a gold-beneficiating I, a gold-beneficiating II, a scavenging I and a scavenging II.
Specifically, as shown in fig. 1, the ore pulp to be selected is first subjected to rough concentration i to obtain a rough foam product i and a rough tailing i, wherein useful minerals in the rough foam product i mainly comprise stibnite and pyrite with good flotability, and useful minerals in the rough tailing i mainly comprise gold-loaded minerals pyrite, arsenopyrite and non-monomer-dissociated stibnite with poor flotability.
Fine foam products I and fine tailings I can be obtained after the coarse foam products I are subjected to antimony fine selection I, fine foam products II and fine tailings II can be obtained after the fine foam products I are subjected to antimony fine selection II, and the fine foam products II are antimony gold concentrates enriched with stibnite and pyrite with good flotability; the fine tail I returns to the rough concentration I, and the fine tail II returns to the antimony fine concentration I.
The coarse tailings I can obtain coarse foam products II and coarse tailings II after coarse separation II, the coarse foam products II can obtain fine foam products III and fine tailings III through gold fine separation I, the fine foam products III can obtain fine foam products IV and fine tailings IV through gold fine separation II, and the fine foam products IV are the gold-antimony concentrate enriched with gold-loaded minerals pyrite, arsenopyrite and non-monomer-dissociated stibnite which have poor flotability; and returning the fine tail III to the rough concentration II, and returning the fine tail IV to the gold fine concentration I.
The rough tailings II are sequentially subjected to scavenging I and scavenging II, foam products obtained by the scavenging I and the scavenging II are middling I and middling II respectively, the middling I returns to the roughing II, and the middling II returns to the scavenging I; and (3) obtaining the tailings obtained by the scavenging II, namely the final tailings, namely the flotation tailings in the figure 1.
It should be noted that the names and names of the various foam products and tailings are only used for conveniently distinguishing the corresponding foam products and tailings obtained by different processes, and therefore, should not be construed as unduly limiting the present invention.
Various reagents are required in the above steps, wherein the flotation reagent used in the roughing I of the present embodiment comprises sodium carbonate, an activating agent, a combined collector and a foaming agent. As can be seen from the description of the previous part of this embodiment, the first roughing step is mainly to float the stibnite and pyrite with good floatability, and the sodium carbonate can reduce the floatability of the stibnite to a certain extent, so the sodium carbonate in the prior art is only added in the second roughing step, and the sodium carbonate in the prior art mainly has the function of adjusting the pH value, so that the pH value of the second roughing step is 7.5-8, and the second roughing step is weakly alkaline, thereby effectively improving the floating of the pyrite, arsenopyrite and non-monomer dissociated stibnite with poor floatability by matching with other corresponding reagents.
However, long-term experiments by the inventor show that the influence of harmful ions such as calcium ions, magnesium ions and the like in ore pulp can be timely and effectively eliminated in advance by adding sodium carbonate into the roughing I, particularly adding the sodium carbonate into a ball mill in the dissociation process, and the sodium carbonate has a dispersing effect on the slime and can weaken or eliminate the adverse influence of the slime on flotation, so that the low-impurity, high-gold and high-antimony raw material antimony-gold concentrate is obtained. Of course, other dispersants such as sodium hexametaphosphate and sodium carbonate can be added in the embodiment to further disperse the slime and eliminate the influence of calcium and magnesium ions.
The sodium carbonate in the invention has the above functions, and is also an activating agent of the pyrite, the surface of the pyrite can be effectively stripped by adding the sodium carbonate in the ball mill, the fresh surface of the pyrite is exposed, and the surface is easy to react with a collecting agent, so that the flotation of the pyrite is activated; in addition, the sodium carbonate replaces a common activator copper sulfate of the pyrite, so that copper can be prevented from being doped into the antimony gold concentrate, the quality of the antimony gold concentrate is improved, and meanwhile, new impurities cannot be introduced due to the addition of the sodium carbonate, so that the sodium carbonate can be directly added into the ball mill to activate the pyrite in time, and the pyrite can float up quickly in time.
The effect of the invention cannot be achieved if other dispersants and common activators, namely copper sulfate, are adopted to disperse slime and activate pyrite respectively, because copper impurities are prevented from being doped into antimony gold concentrate, the activator, namely copper sulfate, can only be added in the roughing II process, and it can be understood that the dispersants have the dispersing effect on the slime, but when the selected ore pulp is subjected to roughing I and roughing II, the dispersing effect of the dispersants on the slime is gradually weakened along with the time, if the copper sulfate activator is added in the roughing II process, pyrite can be wrapped by the slime again and can not be activated and can not float upwards, or the pyrite can not float upwards in time and can not float upwards in time if the pyrite can not float upwards in time, and the pyrite can not float upwards in time and can not float upwards any more due to the reasons of slime wrapping and the like. In the roughing I, particularly, sodium carbonate is added into a ball mill in the dissociation process, so that the slime can be dispersed and the pyrite can be activated at the same time, the pyrite can quickly float in the roughing I and roughing II processes in time after the slime is dispersed, the problems are solved, and the recovery rate of gold is improved.
In the embodiment, lead nitrate can be used as the activating agent in the roughing I, Y89-3 xanthate and butylammonium nigride can be used as the combined collecting agent, and 2# oil can be used as the foaming agent. The lead nitrate is used as the preferable activator of the stibnite, can play a good role in activating the stibnite, improves the floating speed of the stibnite and shortens the floating time of the stibnite; the Y89-3 xanthate and the ammonium black are used as combined collectors, wherein the ammonium black has strong selectivity and weak collecting capability, and sodium carbonate can reduce the floatability of stibnite to a certain extent, so that stibnite cannot be timely enriched into stibnite gold concentrate in a short time by using the ammonium black only, and a small amount of Y89-3 xanthate with strong collecting capability is added in the embodiment, so that the flotation rate of the stibnite can be effectively improved. If a single large amount of Y89-3 xanthate is adopted, a large amount of pyrite and arsenopyrite can float upwards due to the fact that the collecting capacity is too strong, foams become brittle, and the foams are prone to breaking, so that stibnite cannot be enriched in antimony gold concentrate in a short time, and therefore the single large amount of Y89-3 xanthate is not suitable to be adopted as a collecting agent.
Therefore, in the embodiment, by adopting the above medicament system, and utilizing the natural floatability differences and the mineral dissociation degrees of the stibnite, the pyrite and the arsenopyrite, according to the floating rate and the flotation time of the three minerals, and then adopting one roughing and two concentrating (namely roughing I, stibnite concentrating I and stibnite concentrating II), the monomeric dissociated stibnite and the pyrite with good floatability can be quickly floated in a short time to obtain the stibnite concentrate with high gold content, high stibnite content and low arsenic content, so that the pyrite, the arsenopyrite, the undissociated stibnite and the gangue minerals with poor floatability can be prevented from being mixed into the stibnite concentrate.
In the following, the present example will explain the corresponding results in connection with the corresponding drug regimen used in the field industrial experiment.
In the embodiment, the flotation reagent I for roughing contains 300g/t of sodium carbonate, 100g/t of sodium hexametaphosphate, 220g/t of lead nitrate, 30g/t of ammonium nitrate black drug, 89-3 g/t of Y and 15g/t of No. 2 oil; when antimony is selected, adding 20g/t of lead nitrate; when antimony concentration II is carried out, 10g/t of lead nitrate is added.
Adding 300g/t of sodium carbonate, 100g/t of copper sulfate, 130g/t of MA-2 xanthate and 40g/t of No. 2 oil when performing rough separation II; when the scavenging process I is carried out, 30g/t of copper sulfate, 50g/t of MA-2 xanthate and 25g/t of 2# oil are added; when the scavenging II is carried out, 10g/t of copper sulfate, 25g/t of MA-2 xanthate and 25g/t of 2# oil are added; and no medicament is added when the gold concentration I and the gold concentration II are carried out.
The results of the above-described formulation combined with the iso-flotation process of this example are shown in the following table:
therefore, the grades of Au, sb and As in the antimony gold concentrate obtained by the iso-floatable process in the embodiment are respectively 40.23g/t, 56.34% and 1.21%, and the recovery rates of the Au, sb and As are respectively 53.50%, 85.97% and 30.92%; the Au, sb and As grades in the gold and antimony concentrate are respectively 35.23g/t, 10.27% and 2.43%, and the Au, sb and As recovery rates of the part are respectively 35.32%, 11.81% and 46.82%. The total recovery rate of gold and antimony is 88.82% and 97.8%, respectively.
The gold grade in the antimony gold concentrate obtained by the prior art is 30g/t, the antimony grade is 58 percent, and the arsenic grade is 0.8 percent; the recovery rate of gold was 87.3% and the recovery rate of antimony was 97.3%. Comparison shows that the Au grade in the antimony gold concentrate in the embodiment is improved by 10.23g/t, and the Au grade in the gold concentrate obtained by using the antimony gold concentrate as a raw material of a subsequent antimony smelting process by an acid method for antimony smelting can be improved to more than 70g/t from 65-70 g/t. When the gold concentrate is sold, if the gold grade in the gold concentrate is below 70g/t, the valuation coefficient of the gold concentrate can only be improved by a small degree along with the improvement of the gold grade in the gold concentrate; when the gold grade is above 70g/t, along with the improvement of the gold grade in the gold concentrate, the valuation coefficient of the gold concentrate can be greatly improved, thereby greatly increasing the profits of enterprises. The total recovery rate of gold is improved by 1.52 percent compared with the prior art, and the total recovery rate of antimony is improved by 0.5 percent compared with the prior art, so that the total recovery rate of useful metals in the minerals can be improved, and the economic benefit is maximized.
Claims (6)
1. A flotation method of paragenetic ore containing arsenic, gold and antimony is characterized in that: the method comprises the steps of dissociating ore to obtain selected ore pulp, and performing an equal-floatation process on the selected ore pulp to obtain antimony gold concentrate and gold antimony concentrate;
the floatable process comprises the steps of obtaining antimony gold concentrate through roughing I, antimony refining I and antimony refining II; the tailings obtained by the roughing I are subjected to roughing II, gold dressing I, gold dressing II, scavenging I and scavenging II to obtain gold-antimony concentrate and final tailings;
the flotation reagent used in the rough separation I comprises sodium carbonate, an activating agent, a combined collecting agent and a foaming agent.
2. A flotation process according to claim 1, characterized in that: sodium carbonate in the flotation reagent used in the roughing I is added into the ore pulp in the dissociation process.
3. A flotation process according to claim 1, characterized in that: the activating agent adopts lead nitrate.
4. A flotation process according to claim 1, characterized in that: the combined collecting agent adopts Y89-3 xanthate and ammonium-butyl-black.
5. A flotation process according to claim 1, characterized in that: the flotation reagent used in the rough separation I also contains sodium hexametaphosphate.
6. A flotation process according to claim 1, characterized in that: and the flotation reagent used in the rough separation II comprises sodium carbonate, copper sulfate, MA-2 xanthate and No. 2 oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211538393.2A CN115921101A (en) | 2022-12-02 | 2022-12-02 | Flotation method of arsenic-containing gold-antimony symbiotic ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202211538393.2A CN115921101A (en) | 2022-12-02 | 2022-12-02 | Flotation method of arsenic-containing gold-antimony symbiotic ore |
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