CN1096299C - Method of depressing non-sulfide cilicate gangue minerals - Google Patents

Method of depressing non-sulfide cilicate gangue minerals Download PDF

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CN1096299C
CN1096299C CN96194444A CN96194444A CN1096299C CN 1096299 C CN1096299 C CN 1096299C CN 96194444 A CN96194444 A CN 96194444A CN 96194444 A CN96194444 A CN 96194444A CN 1096299 C CN1096299 C CN 1096299C
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amd
inhibitor
mineral
acrylamide
recovery
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CN1186456A (en
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D·R·内加拉吉
S·S·王
J·S·李
L·马利奥科
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Cytec Technology Corp
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Cytec Technology Corp
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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
    • B03D1/016—Macromolecular compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/004—Organic compounds
    • B03D1/008—Organic compounds containing oxygen
    • 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
    • B03D1/01—Organic compounds containing nitrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores

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  • Silicates, Zeolites, And Molecular Sieves (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)
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Abstract

A method for the depression of non-sulfide, silicate gangue minerals is provided wherein the depressant is either (1) a polymeric material comprising recurring units of the formula: -[-X-]-x -[-Y-]-y -[-Z-]-z wherein X is the polymerization residue of an acrylamide or mixture of acrylamides, Y is an hydroxy group containing polymer unit, Z is an anionic group containing polymer unit, x represents a residual mole fraction of at least about 35 %, y represents a residual mole fraction of from about 1 to 50 % and z represents a residual mole fraction of from about 0 to about 50 %, or (2) a mixture of said polymer and a polysaccharide.

Description

The method that suppresses the unsulfided silicate gangue mineral
The background of invention
The present invention relates to from base metal (base metal) sulfide ore, reclaim the froth flotation method of valuable sulfide mineral.Relate in particular to a kind of method that in the process of using the valuable sulfide mineral of froth flotation method selected works, suppresses the unsulfided silicate gangue mineral.
Some theory and practice propose, and the reagent that is called collector is depended in the success of sulphide flotation method to a great extent, and this reagent makes the valuable mineral that must separate from other mineral have the selection hydrophobicity.
Valuable sulfide also depends on some other important reagent with the success that separates of other mineral, as modifier.Modifier comprises (but needn't fixed limit in) major function neither short collection neither foam, and all reagent that normally it can not be floated the surface modification of mineral.
Improve valuable sulfide mineral FLOTATION SEPARATION approach except attempt making the sulphide flotation collecting agent to the selectivity of valuable sulfide mineral stronger, also comprise use modifier, using more particularly, inhibitor suppresses the unsulfided gangue mineral, they can not floated with sulfide, thereby reduce the content of unsulfided gangue mineral in concentrate.Inhibitor is that a kind of acting on selectively on the specific unwanted mineral prevents or hinder the modifying agent that they float.
In the valuable mineral floating process of sulfide, the only problem of these unsulfided silicate gangue mineral is that they have natural buoyancy, and promptly they can not rely on the valuable mineral floating collecting agent of used sulfide and float.Even use the very strong valuable mineral floating collecting agent of sulfide of selectivity, these silicate minerals still can appear in the sulfide concentrate.Trouble is talcum and pyrophyllite (both all belong to magnesium silicate type) especially, because they have natural high hydrophobicity.As if other magnesium silicate mineral that belong to olivine, pyroxene and serpentine class have buoyancy in various degree, different with the mineral deposit.These unwanted mineral are present in the valuable mineral concentrate of sulfide, caused many problems: a) they have increased the amount of concentrate, therefore improved the cost of handling and transport concentrate, b) they fight for the space in flotation stage mutually at foam, therefore reduced the overall recovery of the valuable mineral of sulfide, c) they have diluted the content of the valuable sulfide mineral in the sulfide concentrate, this makes concentrate not too be suitable for (being unsuitable in some cases) melting, because unwanted mineral have hindered smelting operation.
The inhibitor that is generally used for sulphide flotation comprises as inorganic salts (NaCN, NaHS, SO 2, sodium pyrosulfite etc.) and the material of a small amount of organic compound (as sodium thioglycolate, mercaptoethanol etc.).Known these inhibitor can suppress sulfide mineral, but and do not know whether they are inhibitor of non-sulfide mineral, the collector of valuable sulfide is not the collector of good valuable mineral of unsulfided usually just as is known.It is very big that the body of sulfide mineral and unsulfided mineral and surface chemical property differ, and they also have greatest differences for the reaction of different chemical substances.At present, use some polysaccharides (as guar gum and carboxymethyl cellulose) during sulphide flotation, the unsulfided silicate gangue mineral to be suppressed.Yet their performance is very unstable, and their inhibition abilities on some ores are unacceptable, simultaneously the required effective dose very high usually (high to 1-10lbs/ton) of ore per ton.Their inhibition ability also can be subjected to the influence in its source, and every batch all inconsistent.And these polysaccharides also are the useful sources of food, that is to say, they have been reduced their application on food as inhibitor, and their storage simultaneously exists special problem: they can become the food of insect.At last, they are not easy to miscible or are dissolved in water, even it is also unstable to form the aqueous solution.United States Patent (USP) 4,902,764 (Rothenberg etc.) have been described and have been used to reclaim valuable sulfide mineral being the synthetic copolymer of base and terpolymer with the polyacrylamide as the inhibitor of sulfide mineral.United States Patent (USP) 4,720,339 (Nagaraj etc.) have described and have been used for the valuable mineral of flotation unsulfided being the synthetic copolymer of base and terpolymer with the polyacrylamide as the inhibitor of siliceous gangue mineral, but are not the inhibitor as the valuable mineral selected works of sulfide process.' 339 patent is described to these polymer can suppress silica effectively during the phosphate flotation, aliphatic acid and unsulfided collector are also used in this phosphate flotation in flotation step.The patentee does not mention the effective inhibitors that these polymer are the unsulfided silicate gangue mineral during valuable sulfide mineral reclaims.In fact, in the process that valuable mineral are useful to sulfide, these inhibitor do not show the inhibition ability to the appropriateness of unsulfided silicate mineral.United States Patent (USP) 4,220,525 (Petrovich) have been put down in writing polyhydroxy amine and have been used to reclaim the valuable mineral of unsulfided as the inhibitor of gangue mineral (comprising silica, silicate, carbonate, sulfate and phosphate).The example of the polyhydroxy amine that is disclosed comprises tromethamine, aminopartitols, aminohexose alcohol, amino heptitols, aminooctitols, pentosamine, hexosamine, amino-tetrols etc.United States Patent (USP) 4,360,425 (Lim etc.) have been recorded and narrated a kind of modification method that improves the froth flotation method that reclaims the valuable mineral of unsulfided, have wherein applied the synthetic inhibitor of hydroxyl and carboxyl functional group.These inhibitor add second step or the amine flotation step of two step floatations, are used for suppressing during amine flotation siliceous gangue from the concentrate in second step valuable mineral of unsulfided such as phosphate mineral.This patent only relates to during the amine flotation uses synthetic inhibitor.
In view of the above, especially United States Patent (USP) 4,902, described in 764 with specific be that the copolymer and the terpolymer of base is used for suppressing sulfide mineral with the polyacrylamide when reclaiming valuable sulfide mineral, we find that unexpectedly these polymer (use separately or be used in combination with polysaccharide) are the good inhibitor of unsulfided silicate gangue mineral (as talcum, pyroxene, olivine, serpentine, pyrophyllite, chlorite, biotite, amphibole etc.) really.This result is beat all because these inhibitor only revealed be the inhibitor that can be used as the sulfide gangue.Find that now these synthetic inhibitor are good substitutes of the polysaccharide that uses separately at present, because they, and the mixture of they and polysaccharide is easy to miscible or is dissolved in water, safety and their stabilized aqueous solution.Use them can increase the utilizability of the polysaccharide of originating as valuable human foods at this, their performance also is stable simultaneously.They can prepare according to bright book strictly speaking, therefore can guarantee every batch of consistency of product.Synthetic polymer helps more easily to change its structure, and thus, the special inhibitor that obtains being suitable for given occasion becomes possibility.
The general introduction of invention
The invention provides a kind of valuable sulfide mineral of selected works from ore that comprises, discard the method for unsulfided silicate gangue mineral simultaneously selectively:
A. form the moisture liquid slurry of ore particles in small, broken bits, that separate out size, wherein contain described valuable sulfide mineral and described unsulfided silicate gangue mineral;
B. use the unsulfided silicate gangue mineral inhibitor of effective dose, valuable sulfide mineral collector and frothing agent that described liquid slurry is regulated, described inhibitor comprises (1) a kind of polymer, comprising:
(i) an x unit chemical formula:
Figure C9619444400061
A (ii) y unit chemical formula:
A (iii) z unit chemical formula:
Figure C9619444400063
Wherein, X is the polymeric residues of a kind of acrylamide monomer or multiple acrylamide monomer mixture, Y is the polymer unit that contains hydroxyl, Z contains the polymer unit of anionic group, x represents that the mole percent of residue is at least about 35%, y be mole percent in the scope of 1-50%, the mole percent of z in the scope of 0-50%, the perhaps mixture of (2) described polymer and polysaccharide;
C. collect valuable sulfide mineral by froth flotation method, wherein the content of unsulfided silicate gangue mineral decreases.
The description that comprises preferable embodiment of invention
The polymer inhibitor of above chemical formula comprises, as (i) unit, as the polymeric residues of acrylic amide (as acrylamide itself), alkyl acrylamide class (as Methacrylamide, ethyl acrylamide etc.).
(ii) the unit comprises the polymeric residues of the monoene unsaturated comonomer of hydroxyl, comonomer such as hydroxyalkyl acrylate and hydroxyalkyl methacrylate, for example acrylic acid 1,2-dihydroxy propyl ester or methacrylic acid 1,2-dihydroxy propyl ester, hydroxy-ethyl acrylate or hydroxyethyl methacrylate, GMA, acrylamido glycolic (acrylamido glycolic acid); Hydroxyalkyl acrylamide, for example N-2-ethoxy acrylamide, N-1-hydroxypropyl acrylamide, N-two (1, the 2-dihydroxy ethyl) acrylamide, N-two (2-hydroxypropyl) acrylamide etc.
(ii) unit cell is preferably by the monomer copolymerization with the hydroxyl that suits and enters the inhibitor of polymerization.Yet, also can on the monomer residue of polymerization, introduce hydroxyl substituent, the monomer residue by this polymerization of hydrolysis for example, perhaps make and be easy to the group that joins with suitable hydroxyl on the monomer residue of polymerization and suitable reactant (as glyoxal) carries out follow-up reaction, as United States Patent (USP) 4, described in 902,764, this patent is incorporated by reference in this.Yet as the Y unit, glyoxalated polyacrylamide should contain the glyoxalated amide units that is less than about 50 mole percents, preferably for being less than about 40 mole percents, better for being less than 30 mole percents.The Y unit of following formula is non-Alpha-hydroxy structure preferably:
Figure C9619444400071
Wherein, A is O or NH, R and R 1Be respectively hydrogen or C 1-C 4Alkyl, n are 1-3.
But the (iii) unit of used polymer comprises the polymeric residues of the monomer of the unsaturated copolymerization of anion-containing monoene in the inhibitor of the present invention, but the monomer of copolymerization such as acrylic acid; Methacrylic acid; The alkali metal salts or ammonium salt of acrylic acid and/or methacrylic acid; The sulfonic acid vinyl acetate; Vinyl phosphonate; 2-acrylamido-2-methyl propane sulfonic acid; Styrene sulfonic acid; Maleic acid; Fumaric acid; Crotonic acid; Methacrylic acid 2-sulfo group ethyl ester (2-sulfoethylmethacrylate); 2-acrylamido-2-methylpropanephosphonic acid etc.
Perhaps (but not good enough), anion substituent can insert the (iii) unit of the used polymer of the present invention by follow-up reaction, and as (i) unit acrylamide polymerization residue part by hydrating polymer, this also has discussion in above-mentioned ' 764 patents.
The scope of effective weight average molecular weight of these polymer is unexpectedly wide, approximately from several thousand (as 5000) to millions of (as 10,000,000), better approximately from 10,000 to 1,000,000.
In the inventive method in the used inhibitor combination used polysaccharide component comprise guar gum; The guar gum of modification; Cellulose such as carboxymethyl cellulose; Starch etc.Be preferably guar gum.
The scope of polysaccharide and polymer ratio is about 9: 1 to about 1: 9 in the inhibitor mixed thing, is about 7: 3 to about 3: 7 preferably, and best is about 3: 2 to 2: 3.
The scope of the dosage of used polymer inhibitor in the inventive method (use separately or be used in combination) with polysaccharide be ore per ton about 0.01 to about 10 pounds of inhibitor, be about 0.1-5 pound/ton preferably, the best 0.1-1.0 pound/ton ore that is about.
The concentration of (i) unit should be at least about 35% (mole) of whole polymer in the used inhibitor of the present invention, is at least about 50% preferably; (ii) the concentration of unit is about 1-50% (mole), is about 5-20% preferably; (iii) the concentration of unit is about 0-50% (mole), is about 1-50% preferably, better is about 1-20%.By the mixture of polymers that above X, Y and Z unit are formed, also can use 9: 1 to 1: 9 ratio.
Use synthetic inhibitor of the present invention to come the new method of the valuable sulfide mineral of selected works that good metallurgical absorption method is provided, and on grade, increase.This method allows the pH value and the inhibitor dosage of relative broad range, and another advantage is that inhibitor can be used with frothing agent and the valuable mineral floating collecting agent of sulfide.
The present invention be directed to and remove the unsulfided silicate gangue mineral selectively,, make them appear at usually in the flotation concentrate of valuable sulfide mineral because they have natural buoyancy or hydrophobicity or other reason.Especially this fast method can suppress unsulfided magnesium silicate mineral effectively, improves the rate of recovery of the valuable mineral of sulfide simultaneously.This method can be handled (but being not limited to) following these materials:
Talcum
Pyrophyllite
Pyroxene in the ore
Diopside
Pyroxene
Hornblend (horneblendes)
Enstatite
Hypersthene
Ferrosilite
Bronzite
Amphibole in the ore
The tremolite
Actinolite
Anthophyllite
Meroxene in the ore
Phlogopite
Biotite
Chlorite class in the ore
Serpentine class in the ore
Serpentine
Chrysolite
Palygorskite
Lizardite
Antigorite (anitgorite)
Olivine class in the ore
Olivine
Forsterite
Hortonolite
Fayalite
Following embodiment only is used for illustrating, should be considered to limitation of the present invention, unless mention in the appended claims.Unless otherwise noted, all parts and percentage number average are by weight.In an embodiment, below represent used monomer:
The AMD=acrylamide
DHPM=methacrylic acid 1,2-dihydroxy propyl ester
HEM=methacrylic acid 2-hydroxyethyl ester
AA=acrylic acid
The MAMD=Methacrylamide
VP=vinyl phosphonate (vinylphosphonate)
GAPM=glyoxalated poly-(acrylamide)
APS=2-acrylamido-2-methyl propane sulfonic acid
VS=sulfonic acid vinyl acetate (vinylsulfonate)
The CMC=carboxymethyl cellulose
T-BAMD=tert-butyl group acrylamide
HPM=methacrylic acid 2-hydroxypropyl acrylate
HEA=acrylic acid 1-hydroxyl ethyl ester
HPA=acrylic acid 1-hydroxypropyl acrylate
DHPA=acrylic acid 1,2-dihydroxy propyl ester
NHE-AMD=N-2-ethoxy acrylamide
NHP-AMD=N-2-hydroxypropyl acrylamide
NBHE-AMD=N-two (1, the 2-dihydroxy ethyl) acrylamide
NBEP-AMD=N-two (1-hydroxypropyl) acrylamide
SEM=methacrylic acid 2-sulfo group ethyl ester (2-sulfethylmethacrylate)
AMPP=2-acrylamido-2-methylpropanephosphonic acid
C=relatively
Embodiment 1-41
Test procedure
The flotation of pure talcum
Use high-grade talcum sample in improved Hallimond pipe, to test the inhibition ability of polymer.With 1 part be of a size of-200+400 purpose talcum suspends in water, and regulates 5 minutes under desired pH.Add the polymer inhibitor solution of known quantity, further regulated talcum 5 minutes.Then, the talcum that was conditioned is transferred in the floation tank, feeds the nitrogen of stipulated time, carry out flotation.Float and the talcum that does not float by isolated by filtration then, drying is also weighed.Calculate the flotation percentage from these weight.
Inhibition ability with inhibitor of different molecular weight sees Table 1, and the inhibition ability is weighed with the flotation rate of talcum, and the flotation rate of talcum is low more, and then the inhibition ability of inhibitor is just strong more.These embodiment have clearly illustrated that polymer inhibitor of the present invention can suppress the flotation of talcum.Under need not the situation of any polymer, the flotation rate of talcum be 98%; Use polymer, the flotation rate of talcum is in the scope of 5-58%.In general, the inhibition ability of the inhibitor of higher molecular weight is stronger.The inhibition ability of inhibitor is also along with the increase of the ratio of hydroxyl comonomer and strengthen.
Table 1
Inhibitor concentration: 100ppm; Flotation in 8 minutes; PH 9
Embodiment Inhibitor Talcum flotation rate %
1C Do not have 98
2 AMD/DHPM，95/5，MW 10,000 31
3 AMD/DHPM，90/10，MW 10,000 22
4 AMD/DHPM，80/20，MW 10,000 19
5 AMD/DHPM，50/50，MW 10,000 20
6 AMD/HEM，95/5，MW 10,000 56
7 AMD/HEM，90/10，MW 10,000 23
8 AMD/DHPM，90/10，MW 3,000 58
9 AMD/DHPM，90/10，MW 10,000 32
10 AMD/DHPM，90/10，MW 20,000 25
11 AMD/DHPM，90/10，MW 297,000 22
12 AMD/DHPM，90/10，MW 397,000 5
13 AMD/DHPM，90/10，MW 878,000 7
14 AMD/HEM，90/10，MW 3000 45
15 AMD/HEM，90/10，MW 10,000 12
16 AMD/HEM，90/10，MW 20,000 13
17 AMD/HEM，90/10，MW 116,000 15
18 AMD/HEM，90/10，MW 286,000 20
19 AMD/HEM，90/10，MW 458,000 18
20 AMD/HEM，90/10，MW 656,000 18
21 AMD/DHPM/AA 80/10/10，MW 7000 24
22 AMD/HEM/AA 80/10/10，MW 8800 38
Inhibition ability when table 2 has provided the of the present invention various polymer inhibitors of molecular weight in 10,000 to 300,000 scopes in various dose.In general, inhibition ability is strengthened along with the increase of dose of polymer.For the polymer of higher molecular weight, it is much lower to reach the required dosage of given inhibition ability.
Table 2
PH 9; Flotation in 8 minutes
Embodiment Inhibitor Talcum flotation rate %
23C Do not have 98
24 AMD/DHPM，90/10，MW 10,000，5ppm 70
25 AMD/DHPM，90/10，MW 10,000，10ppm 59
26 AMD/DHPM，90/10，MW 10,000，40ppm 40
27 AMD/DHPM，90/10，MW 10,000，100ppm 21
28 AMD/HEM，90/10，MW 10,000，5ppm 52
29 AMD/HEM，90/10，MW 10,000，10ppm 28
30 AMD/HEM，90/10，MW 10,000，100ppm 22
31 AMD/DHPM，90/10，MW 300,000，1ppm 30
32 AMD/DHPM，90/10，MW 300,000，2.5ppm 12
33 AMD/DHPM，90/10，MW 300,000，100ppm 5
34 AMD/HEM，90/10，MW 300,000 1ppm 42
35 AMD/HEM，90/10，MW 300,000 10ppm 20
36 AMD/HEM，90/10，MW 300,000 100ppm 20
Table 3 has provided 90/10 acrylamide/dihydroxypropyl methacrylate copolymer inhibition ability when different pH value.These results show that in very wide pH value scope (3.5-11), the inhibition ability is all kept.
Table 3
AMD/DHPM 90/10:MW 10,000; Dosage: 100ppm; Flotation in 8 minutes
Without inhibitor, in used pH scope, the flotation rate is 95-98%
Embodiment pH Talcum flotation rate %
37 3.5 20
38 5 35
39 7 25
40 9 23
41 11 26
Embodiment 42-45
The flotation of natural sulfide mine
Ore deposit 1
The ore that will contain about 2.25% Ni and 28% MgO (magnesium silicate form) grinds in the rod mill of laboratory, obtains being of a size of 80% 200 purpose liquid slurry.Then, this liquid slurry is transferred in the floation tank, regulate 4 minutes with 200 parts/ton copper sulphate down in the pH of nature value (～8.5), regulate 2 minutes with 175 parts/ton sodium ethylxanthate then, then regulate 1 minute with the polymer inhibitor and the pure frothing agent of requirement.Then, (about 5.5l/min) carries out flotation by bubbling air, obtains four batches of concentrates.Filter concentrate and mine tailing then, drying is also measured.
In table 4, compared the result of two kinds of terpolymer inhibitor of the present invention and guar gum.The purpose of this flotation is to reduce the rate of recovery of sulphide flotation concentrate mesosilicic acid magnesium (with the indicant of MgO as calibrating), the rate of recovery and the grade of the Ni that maintenance simultaneously is high as far as possible.The result of table 4 shows, only uses two kinds of terpolymer inhibitor of the present invention of 75% dosage of guar gum, with regard to making the rate of recovery of MgO reduce by 3 units, obtains good equally slightly the Ni rate of recovery and grade simultaneously.Under the situation of not using any inhibitor, the rate of recovery of MgO is very high, is 27%, and this is unacceptable.
Table 4
Determination of raw material: 2.25% Ni and 27.7% MgO
Embodiment Inhibitor p/t Accumulating weight % C1-4 The Ni rate of recovery The Ni grade The MgO rate of recovery
42C Do not have 0 36.87 80.5 5.0 27.0
43C Guar gum 175 31.10 76.1 5.4 21.5
44 AMD/DHPM/AA 80/10/10，7K 130 27.88 77.6 6.4 18.6
45 AMD/HEM/AA 80/10/10，9K 130 26.98 75.1 6.3 18.5
Embodiment 46-65
Ore deposit 2
The ore that will contain about 3.3% Ni and 17.6% MgO (magnesium silicate form) ground 5 minutes in the rod mill of laboratory, obtained being of a size of 81% 200 purpose liquid slurry.Then, levigate liquid slurry is transferred in the floation tank, the pH of nature value (～8-8.5) regulate 2 minutes with 150 parts/ton copper sulphate down, the sodium ethylxanthate of 50-100 part/ton is regulated 2 minutes, then with the inhibitor of requirement and pure adjusting 2 minutes.Then, (about 3.5-5l/min) carries out first step flotation by bubbling air, collects concentrate.In second step, the liquid slurry is regulated 2 minutes with 10 parts/ton sodium ethylxanthate, the inhibitor and the frothing agent of requirement, collects concentrate.Second step, used condition was also used in the 3rd step, collected concentrate.Filter all float products, dry and mensuration.
In table 5, several copolymers and terpolymer inhibitor are compared with regard to the inhibition ability in two various dose and guar gum.Under need not the situation of any inhibitor, the rate of recovery of Ni be 96.6%, and this is considered to very high and desirable; The rate of recovery of MgO is 61.4%, and this is also very high, but very undesirable.4.7% Ni grade of gained is only a little high a little than raw material.Use 420 and 500 parts/ton guar gum, the rate of recovery of MgO is in the scope of 28.3-33.5%, and this is more much lower than the rate of recovery that obtains without inhibitor, and the rate of recovery of Ni is about 93%, and is lower than the rate of recovery that obtains without inhibitor.The rate of recovery of Ni reduces and can estimate in the process of the rate of recovery that reduces MgO, because exist some constant mineral contacts between Ni mineral and magnesium silicate, when magnesium silicate was suppressed, some Ni mineral also can be suppressed.Synthetic polymer inhibitor of the present invention has the inhibition ability stronger than guar gum; Use polymer inhibitor, the rate of recovery of MgO by comparison, uses the rate of recovery of guar gum to be 28.3-33.5% in the scope of 6.3-15.3%.These results show, if only need with use coming to the same thing of guar gum gained, can use the synthetic inhibitor of suitable low dosage so.Contain each terpolymer of 10 parts of Methacrylamide and dihydroxypropyl methacrylate and have the inhibition ability similar with guar gum.Similarly, the terpolymer of AMD, DHPM and vinyl phosphonate has the metallurgical performance similar with guar gum.
Should be noted that polyacrylamide can with the diglycolic acid reaction that contains hydroxyl and carboxyl side group, be (10 parts amide group and diglycolic acid reaction are promptly arranged in polyacrylamide) demonstration inhibition ability under 10% the situation in the replacement degree.The replacement degree is 50% o'clock, the inhibition ability a little less than.
Table 5
Determination of raw material: 3.31% Ni and 17.58% MgO
Embodiment Inhibitor p/t The Ni rate of recovery The Ni grade The MgO rate of recovery
46C Do not have 0 96.6 4.7 61.4
47C Guar gum 350+70+80 93.0 7.7 28.3
48C Guar gum 300+60+60 92.9 6.7 33.5
49 AMD/DHPM 90/10，397K 350+60+60 84.5 10.5 12.6
50 AMD/DHPM 90/10，878K 350+70+80 81.8 12.6 8.2
51 AMD/DHPM 90/10，878K 280+56+64 84.2 8.0 15.3
52 AMD/DHPM 80/20，500K 350+70+80 80.3 11.5 9.8
53 AMD/DHPM 80/20，800K 350+70+80 71.4 11.8 6.3
54 AMD/MAMD/DHPM 80/10/10，6.23K 350+85+100 92.3 7.2 37.6
55 AMD/MAMD/VP 80/10/10 12.1K 350+85+100 93.1 7.8 31.8
56 GPAM(90/10) 350+70+80 93.3 6.3 43.7
57C GPAM(50/50) 350+70+80 99.0 4.7 63.4
58 AMD/HPM 90/10 350+85+100 94.6 6.4 44.0
59 AMD/HEM 90/10，656K 250+60+70 86.4 7.0 27.9
60 AMD/DHPM/HEM 95/5/5 280+56+64 84.1 6.9 23.9
61 AMD/DHPM/AA 80/10/10 750K 250+60+70 91.8 5.6 39.2
62 The same 280+56+64 89.6 6.2 28.1
63 AMD/DHPM/AA 85/10/5， 800K The same 89.6 7.2 24.6
64 AMD/DHPM/APS 80/10/10，11.7K 250+60+70 95.0 6.5 47.5
65 AMD/DHPM/VS 80/10/10， 7.78K The same 94.1 7.0 42.9
65A 1: 1 embodiment 59 and 61 polymer 350+70+80 92.5 10.3 16.8
Embodiment 66-79
Ore deposit 3
This ore deposit contains about 2.1% Ni and 17% MgO.1000 parts of these ores are ground in rod mill, obtain being of a size of 80% by 20 purpose liquid slurry.Levigate liquid slurry is regulated 2 minutes with 200 parts/ton copper sulphate, and 100 parts/ton the sodium ethylxanthate and the frothing agent of aequum are regulated 2 minutes, regulate 2 minutes with the inhibitor of requirement then.Then, carry out flotation, obtain concentrate by bubbling air.In second step, the liquid slurry is regulated with 40 parts/ton xanthates, the same inhibitor of additional amount, obtains the secondary concentrate.Carry out the 3rd step flotation similarly, obtain concentrate.Filtration, drying are also measured all float products.
In table 6, several synthetic copolymers of the present invention and terpolymer inhibitor are contrasted with regard to the inhibition ability in two various dose and guar gum.These results clearly illustrate that, use the inhibitor of the 40-70% dosage of guar gum, just can obtain better metallurgical effect identical with guar gum or that compare.In many examples, in the rate of recovery of the Ni that is improved, kept the low MgO rate of recovery, this shows that the gangue silicate mineral is suppressed.
Table 6
Determination of raw material: Ni2.06%; The flotation of MgO 17%-xanthates rougher
Embodiment Inhibitor Dosage p/t Accumulating weight % Grade Accumulation rate of recovery %
Ni Ni MgO
66C Guar gum 200 27.9 6.11 84.6 13.1
67C Guar gum 250 27.0 6.31 84.4 12.1
68 AMD/DHPM 90/10，397K 100 29.4 6.20 86.6 13.5
69 AMD/DHPM 90/10，397K 140 27.5 6.29 85.6 12.7
70 AMD/DHPM 90/10，878K 100 28.0 6.45 85.6 12.5
71 AMD/DHPM 90/10，878K 180 28.3 6.39 84.8 12.8
72 AMD/HEM 90/10，286K 140 27.9 6.22 85.1 12.8
73 AMD/HEM 90/10，286K 180 26.7 6.66 84.4 10.9
74 AMD/HEM 90/10，656K 100 27.9 6.54 85.2 12.1
75 AMD/HEM 90/10，656K 180 26.6 6.50 83.7 11.2
76 AMD/DHPM/AA 80/10/10，750K 140 28.3 6.15 84.5 12.6
77 AMD/DHPM/AA 80/10/10，750K 180 27.8 6.48 85.4 12.4
78 AMD/HEM/AA 80/10/10，224K 140 28.9 6.18 86.0 13.8
79 AMD/HEM/AA 80/10/10，224K 180 27.4 6.33 84.2 12.5
Embodiment 80-83
Ore deposit 4
The ore that will contain about 0.6% Ni and 38% MgO (magnesium silicate form) grinds in the rod mill of laboratory, obtains being of a size of 80% 200 purpose liquid slurry.Levigate liquid slurry is removed sludge, regulate 20 minutes with the frothing agent of 120 parts/ton sodium ethylxanthates and requirement.Carry out flotation then, collected concentrate 4 minutes.Then, concentrate is regulated 1 minute with 20 parts/ton the sodium ethylxanthate and the inhibitor of ormal weight.Then carry out than the flotation of cleaning 3.5 minutes.Then, filter concentrate and mine tailing, dry and mensuration.
In table 7, the result and the guar gum of the inhibition ability of three kinds of synthetic polymer inhibitor are contrasted.Result in the table 7 shows once more, uses the synthetic inhibitor of the present invention of the 40-80% dosage of guar gum, just can obtain better metallurgical performance identical with guar gum or that compare.Two kinds of inhibitor wherein make the rate of recovery of Ni significantly improve, and have kept the low rate of recovery of MgO simultaneously.
Table 7
Embodiment Inhibitor Dosage (p/t) Accumulating weight % Grade Accumulation rate of recovery %
Ni Ni MgO
80C Guar gum 30 3.8 9.2 62.6 2.3
81 AMD/DHPM 90/10，397K 15 4.4 9.1 65.8 2.6
82 AMD/DHPM 90/10，397K 12.5 4.7 7.5 66.2 3.0
83 AMD/HEM/AA 80/10/10，224K 24 3.8 9.0 61.7 2.4
Embodiment 84-96
Ore deposit 5
Ni, Cu and Fe, small amounts of platinum and the palladium that will contain a spot of sulphided form, and the ore of about 7.5%MgO (magnesium silicate form) phosphordithiic acid diisobutyl ester with 15 parts of/ton amylic potassium xanthates and 12.5 parts/ton in the rod mill of laboratory ground 10 minutes, obtained being of a size of 40% 200 purpose liquid slurries.Then, levigate liquid slurry is transferred in the floation tank, the pH of nature value (～8.2) down with same amount with grind in same collector regulate 2 minutes, then with the inhibitor of ormal weight and the adjusting of pure frothing agent 2 minutes.Then, (about 3.5-5l/min) carries out flotation by bubbling air, collects concentrate.The used method of first step flotation is also used in second step, collects the secondary concentrate.Filter float product, dry and mensuration.
In table 8, the carboxymethyl cellulose sample of multiple synthetic polymer inhibitor of the present invention and two kinds of separate sources is just suppressed capability result contrast.The purpose of this flotation is Pt and the Pd that obtains high-recovery and grade in concentrate.Under the situation of not using any inhibitor, the rate of recovery of Pt and Pd very high really (be respectively 97.5% and 94-95%), still, the grade of concentrate is low as can't to accept.Use the CMC inhibitor, the rate of recovery of Pt and Pd is respectively 95-96.5% and 92-94.6%, and the grade of Pt is 3-3.1, and the grade of Pd is 12.7-13.As can be known from the results, use the synthetic polymer inhibitor of obviously few dosage (60-80% of CMC dosage), can obtain and use CMC sample identical or the better Pt that compares and the metallurgical performance of Pd.Be also shown in from the result, the synthetic polymer inhibitor can obtain higher Pt grade, Pt be a kind of than Pd more important and metal values more.In embodiment 88, except DHPM, only contain the polymer of 0.5 part of tert-butyl group acrylamide, as long as use 80% the dosage of CMC, just can obtain the metallurgical performance of the Pt identical with CMC (B).
Table 8
Determination of raw material: 5.8p/t Pt; 22p/t Pd
Embodiment Inhibitor p/t The Pt rate of recovery The Pt grade The Pd rate of recovery The Pd grade
84C Do not have 0 97.5 1.6 95.0 6.0
85C Do not have 0 97.6 2.3 94.4 7.2
86C CMC-A 500 95.2 3.1 92.0 12.7
87C CMC-B 500 96.5 3.0 94.6 13.0
88 AMD/DHPM/t-BAMD 89.5/10/0.5 400 96.5 3.1 93.1 11.6
89 AMD/DHPM/AA 80/10/10，750K 400 96.6 2.1 93.2 7.4
90 AMD/DHPM/AA 80/10/10，750K 500 92.9 4.6 88.3 14.7
91 AMD/HEM/AA 80/10/10，224K 370 94.5 3.8 92.1 13.9
92 AMD/HEM/AA 80/10/10，224K 300 95.3 4.2 91.4 16.4
93 AMD/HEM/AA 80/10/10，224K 400 96.6 2.7 94.1 10.6
94 AMD/DHPM/AA 85/10/5 400 96.8 3.2 93.4 11.2
95 AMD/DHPM/VP 80/10/10，12K 370 96.9 2.8 94.1 10.4
96 AMD/DHPM/MAMD 80/10/10 400 94.8 1.6 91.9 6.5
Embodiment 97-99
Ore deposit 6
This ore deposit contains about 0.85% Ni and 39% MgO.1000 parts of these ores are ground in rod mill, obtain being of a size of 80% by 20 purpose flotation feed.Levigate liquid slurry is regulated 30 minutes with the inhibitor of requirement and 500 parts/ton sodium ethylxanthate.Carry out rougher flotation 25 minutes then.Then, the rougher concentrate is regulated with the inhibitor of ormal weight and 10 parts/ton sodium ethylxanthate, carries out than the flotation of cleaning 15 minutes.Filter float product, dry and mensuration.
In table 9, the result of two kinds of synthetic copolymers of AMD/DHPM and the result of CMC are contrasted.These results show, only need the synthetic inhibitor of 27% dosage of use CMC dosage, just can obtain better metallurgical performance identical with CMC or that compare.The use molecular weight is 878,000 copolymer, and the MgO rate of recovery all is starkly lower than and uses CMC gained result in the concentrate conventional and cleaning of gained.
Table 9
Determination of raw material: Ni 0.85%; MgO 39%
Embodiment Inhibitor Accumulated dose p/t Product The Ni grade Accumulation rate of recovery %
Wt Ni MgO
97C CMC 275 Concentrate rougher concentrate than cleaning 15.44 3.21 3.48 21.17 60.8 76.8 2.3 20.6
98 AMD/DHPM 90/10，878K 75 Concentrate rougher concentrate than cleaning 18.01 3.78 2.73 15.92 59.3 72.6 1.5 14.6
99 AMD/DHPM 90/10，397K 75 Concentrate rougher concentrate than cleaning 14.48 2.83 3.41 21.96 61.6 77.6 2.1 20.7
Embodiment 100-109
Ore deposit 7
The ore that will contain Ni, the Cu of a small amount of sulphided form and Fe and about 17% MgO (magnesium silicate form) is laboratory grinding in ball grinder 12 minutes, obtains being of a size of 40% 200 purpose liquid slurries.Then, levigate liquid slurry is transferred in the floation tank, regulates 3 minutes with the inhibitor of ormal weight down, then with 16 parts of/ton sodium isobutyl xanthans and 34 parts of/ton phosphorodithioates and the adjusting of polyethylene glycol frothing agent 3 minutes in the pH of nature value (～7.2).Then, (about 3.5l/min) carries out flotation by bubbling air, collects two batches of concentrates.Filter float product, dry and mensuration.
In table 10, multiple synthetic polymer inhibitor of the present invention and modification guar gum are just suppressed capability result contrast.The purpose of this flotation is to make SiO 2, CaO, MgO and Al 2O 3The rate of recovery minimum of (they have represented the silicate mineral that is present in the sulfide concentrate) keeps simultaneously or the Ni of valuable sulfide mineral and the rate of recovery of Cu are formed in raising.Under the situation of not using any inhibitor, the rate of recovery of Ni and Cu is respectively 49.5% and 79%, still, and the quite high (SiO of the rate of recovery of gangue component 2: 9.4%; CaO:7.4%; MgO 10.6%; Al 2O 3: 5.8%).Use guar gum, the rate of recovery of Ni and Cu all has decline slightly, perhaps be some silicate minerals that have mineral to get in touch with Ni and Cu sulfide because of having suppressed, but the rate of recovery of gangue component has also reduced.The synthetic polymer inhibitor of all tests all makes the rate of recovery of gangue component that significant decline is arranged, and the fall of some of them gained is bigger than the guar gum gained.The rate of recovery of the copper of all inhibitor of the present invention (except a kind of exception) gained all is higher than the result of guar gum.In some cases, the rate of recovery of the copper of gained is higher than the result who does not use inhibitor.Use the synthetic inhibitor gained Ni the rate of recovery also with use guar gum come to the same thing or compare higher.At a best routine AMD/HEM90/10, molecular weight is in 10,000, SiO 2The rate of recovery than having reduced more than 50% without the result of inhibitor, reduced by 44% than the result who uses guar gum.For other gangue component same significant decline arranged also.
Table 10
Determination of raw material calculated value (Calculated Head Assays): Cu-0.07%; Ni-0.20%;
SiO 2-48.8％；CaO-5.8％；MgO-17％；Al 2O 3-9％
Embodiment Inhibitor p/t Reinforced order Copper recovery Nickel recovery SiO 2The rate of recovery The CaO rate of recovery The MgO rate of recovery Al 2O 3The rate of recovery
100C Do not have 0 -- 79.0 49.5 9.4 7.4 10.6 5.8
101C Guar gum 60 Elder generation's inhibiting 77.2 46.2 7.5 5.9 8.6 4.8
102 AMD/HEM 95/5 100K 60 Elder generation's inhibiting 75.9 46.3 8.5 6.8 9.5 5.6
103 AMD/HEM 90/10 20K 60 Elder generation's inhibiting 78.3 48.6 8.0 6.4 9.2 5.2
104 AMD/HEM 90/10 10K 70 Elder generation's inhibiting 81.3 51.0 7.3 5.9 8.2 4.9
105 AMD/HEM 90/10 10K 70 On the contrary 82.4 50.1 4.2 5.1 7.5 3.9
106 AMD/DHPM 80/20 10K 67 Elder generation's inhibiting 79.4 46.5 6.5 4.9 7.4 3.8
107 AMD/DHPM 90/10 10K 60 Elder generation's inhibiting 79.3 48.2 7.4 5.9 8.5 4.7
108 AMD/DHPM 90/10 10K 60 On the contrary 80.2 47.5 6.5 5.0 7.5 4.0
109 AMD/DHPM/AA 80/10/10 10K 60 Elder generation's inhibiting 78.4 46.3 7.2 5.9 8.2 4.9
Embodiment 110
Except the HEA with a great deal of replaced DHPM, other method by embodiment 50 was carried out.Obtain identical result.
Embodiment 111
HEM with DHPA replacement embodiment 45 obtains essentially identical result.
Embodiment 112
Except replace DHPM with HPA, other method by embodiment 53 is carried out.Obtain the identical rate of recovery.
Embodiment 113
When with the HEM among the NHE-AMD replacement embodiment 73, find to obtain the accumulation rate of recovery of identical nickel and magnesium.
Embodiment 114
Use the DHPM in NBHE-AMD replacement embodiment 88 methods.The result is similar.
Embodiment 115
Use the DHPM among the NHP-AMD replacement embodiment 96, obtain the rate of recovery of identical platinum and palladium.
Embodiment 116
Use the HEM among the NBEP-AMD replacement embodiment 102, obtain identical metal recovery rate.
Embodiment 117
Use the AA among the SEM replacement embodiment 22, obtain identical talcum flotation rate %.
Embodiment 118
Use the VP among the AMPP replacement embodiment 55, can obtain identical result.
Embodiment 119-127
The ore that will contain about 3.3% Ni and 16.5% MgO (magnesium silicate form) ground 5 minutes in the rod mill of laboratory, obtained being of a size of 81% 200 purpose liquid slurry.Then, levigate liquid slurry is transferred in the floation tank, the pH of nature value (～8-8.5) down regulate 2 minutes with 150 parts/ton copper sulphate, the sodium ethylxanthate of 50-100 part/ton is regulated 2 minutes, uses the inhibitor mixed thing of requirement and the adjusting of pure frothing agent 2 minutes then.Then, (about 3.5-5l/min) carries out first step flotation by bubbling air, collects concentrate.In second step, the liquid slurry is regulated 2 minutes with 10 parts/ton sodium ethylxanthate, the inhibitor mixed thing and the frothing agent of requirement, collect concentrate.Second step, used condition was also used in the 3rd step, collected concentrate.Filter all float products, dry and mensuration.
In table 11, the inhibition of 1: 1 mixture of AMD/DHPM and guar gum these inhibitor that use active and out of the ordinary are contrasted.Use guar gum separately, the rate of recovery of Ni is 93%, and the rate of recovery of MgO is 28.3%.Use the synthetic polymer inhibitor separately, the rate of recovery of Ni is 84.5%; The rate of recovery of MgO is 12.6%, and is also lower than half of the rate of recovery of using guar gum to obtain, thereby shows that synthetic inhibitor has very strong inhibition ability.Under the situation of using mixture, the rate of recovery of MgO has had further reduction, and the rate of recovery of Ni and grade use the result of synthetic inhibitor that raising is arranged again slightly.These results show, the mixing by inhibitor can obtain stronger inhibition ability, can use the dosage than the used dosage much less of these components of independent use simultaneously.
In table 11, the inhibition of 1: 1 mixture of AMD/HEM polymer and guar gum these inhibitor that use active and out of the ordinary are contrasted.Ditto, use guar gum separately, the rate of recovery of Ni is 93%, and the rate of recovery of MgO is 28.3%.Use the AMD/HEM copolymer of same dose, the rate of recovery of MgO has only 7.7%, shows that it has very strong inhibition ability; The rate of recovery of Ni also significantly descended (be 68.3%, use guar gum be 93%).Yet, use mixture, the rate of recovery of Ni significantly improves (being 82.8%), simultaneously the rate of recovery of MgO remain on 8.3% low-level.These results also show, the effect that can use the mixture of suitable low dosage to be enhanced.In fact, when dosage is reduced to 430 parts/ton hour, the Ni rate of recovery increases to 86% from 82.8%, and simultaneously, the rate of recovery of MgO increases to 11.5% from 8.3%.
Table 11
Determination of raw material: 3.31% Ni and 17.58% MgO
Embodiment Inhibitor g/t The Ni rate of recovery The Ni grade The MgO rate of recovery
119C Do not have 0 96.6 4.7 61.4
120C Guar gum 350+70+80 93.0 7.7 28.3
121C AMD/DHPM 90/10；397K 300+60+60 84.5 10.5 12.6
122 1: 1 guar gum and AMD/DHPM 90/10; 397K 350+70+80 85.7 11.0 10.3
123C Do not have 0 96.6 4.7 61.4
124C Guar gum 350+70+80 93.0 7.7 28.3
125C AMD/HEM 90/10；656K 350+70+80 68.3 11.4 7.7
126 1: 1 guar gum and AMD/HEM 90/10; 656K 300+70+80 82.8 12.2 8.3
127 1: 1 guar gum and AMD/HEM 90/10; 656K 30+60+70 86.0 10.3 11.5
Embodiment 128-143
Test by the method for embodiment 119-127, different is changes inhibitor component again, and inhibitor component and concentration thereof are listed in the table below in 12.Obtain similar result.
Table 12
Embodiment Polymer (PM) Polysaccharide (PS) PM: PS ratio
128 AMD/MAMD/DHPM 80/10/10；623K Guar gum 9∶1
129 AMD/DHPM/AA 80/10/10；7K Starch 1∶1
130 The same; 750K CMC 4∶1
131 AMD/MAMD/VP 80/10/10；12K The modification guar gum 2∶3
132 GPAM(90/10) The same 1∶4
133 AMD/HEM/AA 80/10/10；9K CMC 1∶1
134 AMD/HEM/t-BAMD 89.5/10/0.5 Guar gum 1∶9
135 AMD/DHPM/APS 80/10/10；11.7K Starch 2∶1
136 AMD/DHPM/VS 80/10/10；7.78K Guar gum 3∶2
137 AMD/HPA 80/20 Guar gum 1∶1
138 AMD/DHPA/AA 80/10/10 Guar gum 1∶1
139 AMD/NHE-AMD 90/10 CMC 1∶1
140 AMD/NBHE-AMD/BAMD 89.5/10/0.5 Starch 1∶1
141 AMD/NHP-AMD/MAMD 80/10/10 Guar gum 1∶1
142 AMD/NBEP-AMD 95/5 Guar gum 1∶1
143 AMD/HEM/SEM 80/10/10 Guar gum 1∶1

Claims (10)

1. one kind comprises the valuable sulfide mineral of selected works from ore, discards the method for unsulfided silicate gangue mineral simultaneously selectively:
A. form the moisture liquid slurry of ore particles in small, broken bits, that separate out size, wherein contain described valuable sulfide mineral and described unsulfided silicate gangue mineral;
B. use the unsulfided silicate gangue mineral inhibitor of effective dose, valuable sulfide mineral collector and frothing agent respectively described liquid slurry to be regulated, described inhibitor comprises the mixture of (1) a kind of polymer or multiple polymers, comprising:
(i) an x unit chemical formula:
Figure C9619444400021
A (ii) y unit chemical formula:
Figure C9619444400022
A (iii) z unit chemical formula: Wherein, X is the polymeric residues of a kind of acrylamide monomer or multiple acrylamide monomer mixture, Y is the polymer unit that contains hydroxyl that derives from the monoene unsaturated monomer, Z is the polymer unit that contains anionic group that derives from the monoene unsaturated monomer, x represents that the mole percent of residue is greater than about 35%, y is that mole percent is in the scope of 1-50%, z be mole percent in the scope of 0-50%, perhaps (2) described one or more polymer and during sulphide flotation, suppress the mixture of the polysaccharide of unsulfided silicate gangue mineral;
C. collect valuable sulfide mineral by froth flotation method, wherein the content of unsulfided silicate gangue mineral decreases.
2. the method for claim 1 is characterized in that the chemical formula of Y is:
Figure C9619444400031
Wherein, A is 0 or NH, R and R 1Be respectively hydrogen or C 1-C 4Alkyl, n are 1-3.
3. the method for claim 1 is characterized in that X is the polymeric residues of acrylamide, and Y is a methacrylic acid 1, the polymeric residues of 2-dihydroxy propyl ester, and z is 0.
4. the method for claim 1, it is characterized in that X is the polymeric residues of acrylamide, Y is a methacrylic acid 1, the polymeric residues of 2-dihydroxy propyl ester, Z is the polymeric residues of acrylic acid, sulfonic acid vinyl acetate, vinyl phosphonate or 2-acrylamido-2-methyl propane sulfonic acid, and z is the mole percent in about 1 to 50 scope.
5. the method for claim 1 is characterized in that X is the polymeric residues of acrylamide, and Y is the polymeric residues of hydroxyethyl methacrylate, and z is 0.
6. the method for claim 1, it is characterized in that X is the polymeric residues of acrylamide, Y is the polymeric residues of hydroxyethyl methacrylate, Z is the polymeric residues of acrylic acid, sulfonic acid vinyl acetate, vinyl phosphonate or 2-acrylamido-2-methyl propane sulfonic acid, and z is the mole percent in about 1-50% scope.
7. the method for claim 1 is characterized in that Y represents glyoxalated acrylamide unit, and y is approximately less than 40.
8. the method for claim 1 is characterized in that polysaccharide is a guar gum.
9. the method for claim 1 is characterized in that polysaccharide is a carboxymethyl cellulose.
10. the method for claim 1 is characterized in that polysaccharide is a starch.
CN96194444A 1995-06-07 1996-05-07 Method of depressing non-sulfide cilicate gangue minerals Expired - Fee Related CN1096299C (en)

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