CN110465412B - Molybdenite beneficiation inhibitor and preparation method thereof - Google Patents
Molybdenite beneficiation inhibitor and preparation method thereof Download PDFInfo
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- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229910052961 molybdenite Inorganic materials 0.000 title claims abstract description 52
- 239000003112 inhibitor Substances 0.000 title claims abstract description 46
- 238000002360 preparation method Methods 0.000 title abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 15
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000001768 carboxy methyl cellulose Substances 0.000 claims abstract description 11
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims abstract description 11
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims abstract description 11
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims abstract description 10
- GNHOJBNSNUXZQA-UHFFFAOYSA-J potassium aluminium sulfate dodecahydrate Chemical compound O.O.O.O.O.O.O.O.O.O.O.O.[Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GNHOJBNSNUXZQA-UHFFFAOYSA-J 0.000 claims abstract description 10
- 229920001353 Dextrin Polymers 0.000 claims abstract description 9
- 239000004375 Dextrin Substances 0.000 claims abstract description 9
- 239000007864 aqueous solution Substances 0.000 claims abstract description 9
- 235000019425 dextrin Nutrition 0.000 claims abstract description 9
- 239000001648 tannin Substances 0.000 claims abstract description 6
- 235000018553 tannin Nutrition 0.000 claims abstract description 6
- 229920001864 tannin Polymers 0.000 claims abstract description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 16
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 229920000881 Modified starch Polymers 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 235000019426 modified starch Nutrition 0.000 claims description 4
- 235000019698 starch Nutrition 0.000 claims description 4
- 239000008107 starch Substances 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 2
- 238000005303 weighing Methods 0.000 claims description 2
- 239000006260 foam Substances 0.000 abstract description 17
- 239000003795 chemical substances by application Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 238000005187 foaming Methods 0.000 abstract description 2
- 230000002209 hydrophobic effect Effects 0.000 abstract description 2
- 238000005188 flotation Methods 0.000 description 16
- 239000000454 talc Substances 0.000 description 14
- 235000012222 talc Nutrition 0.000 description 14
- 229910052623 talc Inorganic materials 0.000 description 14
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 12
- 239000011733 molybdenum Substances 0.000 description 12
- 229910052750 molybdenum Inorganic materials 0.000 description 12
- 239000008262 pumice Substances 0.000 description 10
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 229920002907 Guar gum Polymers 0.000 description 7
- 239000000665 guar gum Substances 0.000 description 7
- 235000010417 guar gum Nutrition 0.000 description 7
- 229960002154 guar gum Drugs 0.000 description 7
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 6
- 229910021532 Calcite Inorganic materials 0.000 description 5
- 229910001919 chlorite Inorganic materials 0.000 description 5
- 229910052619 chlorite group Inorganic materials 0.000 description 5
- QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 5
- 239000012141 concentrate Substances 0.000 description 5
- 239000010445 mica Substances 0.000 description 5
- 229910052618 mica group Inorganic materials 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- 239000004575 stone Substances 0.000 description 5
- 239000004088 foaming agent Substances 0.000 description 4
- 230000002401 inhibitory effect Effects 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 235000011128 aluminium sulphate Nutrition 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005411 Van der Waals force Methods 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- 239000001164 aluminium sulphate Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 229910052593 corundum Inorganic materials 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- BUACSMWVFUNQET-UHFFFAOYSA-H dialuminum;trisulfate;hydrate Chemical compound O.[Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O BUACSMWVFUNQET-UHFFFAOYSA-H 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 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 description 2
- 235000019982 sodium hexametaphosphate Nutrition 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001845 yogo sapphire Inorganic materials 0.000 description 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229910003641 H2SiO3 Inorganic materials 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- -1 alum) Chemical compound 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 description 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910001424 calcium ion Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical group O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000005661 hydrophobic surface Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Cosmetics (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Paper (AREA)
Abstract
The invention discloses a molybdenite beneficiation inhibitor and a preparation method thereof. The molybdenite beneficiation inhibitor mainly comprises A, B components, wherein the weight ratio of the component A to the component B is 1:1-1: 2.5; wherein the component A comprises the following components in parts by weight: 80-95 parts of sodium silicate, 5-20 parts of Guergan, 50-80 parts of aluminum sulfate, 5-10 parts of aluminum potassium sulfate dodecahydrate, 15-30 parts of sodium carboxymethylcellulose, 5-15 parts of tannin extract and 10-25 parts of dextrin. A, B components are dissolved in water to prepare an aqueous solution with the weight percentage of 5-15%, and then the aqueous solution is fully stirred and homogenized to obtain the molybdenite beneficiation inhibitor. Through organically combining various components, a water film can be formed on the gangue in the molybdenite, so that hydrophobic foaming is avoided, in addition, the pulp and foam viscosity is reduced, and the adsorption effect between the gangue and the collecting agent is reduced or blocked, so that the problem of pulp foam stickiness in the ore dressing process is solved, and the collecting efficiency of the collecting agent is improved.
Description
Technical Field
The invention belongs to the technical field of beneficiation inhibitors, and particularly relates to a molybdenite beneficiation inhibitor and a preparation method thereof.
Background
Molybdenite (MoS)2) The molybdenite is an important output mineral of industrial products of molybdenum resources, but the molybdenite often contains gangue, and the gangue is various and is commonly mica, calcite, talcum, chlorite, graphite and the like. The main component of mica is SiO2、K2O、Al2O3The main component of calcite is CaCO3The main components of the talc are MgO and Al2O3The main component of chlorite is aluminosilicate.
The molybdenite crystals are in a hexagonal layered or plate-shaped structure, the layers are bonded by van der waals force between S-Mo-S, the bonding force is weak, the structure of the molybdenite is difficult to maintain by the van der waals force between the layers during grinding, and a hydrophobic surface is formed after the layers are broken, so the natural floatability of the molybdenite is good, and the molybdenite is usually subjected to ore dressing by a flotation method. The molybdenite flotation process generally grinds molybdenite to prepare ore pulp, then the ore pulp is sent into a flotation tank, ore particles in the ore pulp are contacted and collided with air bubbles, the ore particles with good floatability are selectively adhered to the air bubbles and are carried and lifted to form a mineralized foam layer consisting of gas-liquid-solid three phases, and the mineralized foam layer is mechanically scraped or overflows from the surface of the ore pulp, dehydrated and dried to form a concentrate product. However, the existence state, the disseminated particle size, the disseminated relationship and the composition of gangue minerals in molybdenum ore deposits in different regions are greatly different, so that the molybdenum ore deposits in different production areas have large selectivity, and in the process of flotation, the gangue such as mica, talc, calcite, chlorite, graphite and the like is very easy to be ground due to softness, and is easy to be foamed during inflation and stirring, and is attached to the bubbles and floats to a mineralized layer, on one hand, the gangue belongs to impurities and directly influences the collection of the molybdenite, on the other hand, the viscosity of the mineralized layer foam is increased, so that the foam is bonded and expanded, the flowability is poor, and the scraper in the flotation machine cannot scrape the foam, thereby being not beneficial to the smooth implementation of the flotation process.
At present, the main inhibitors for flotation of molybdenite at home and abroad are sodium silicate and sodium hexametaphosphate. Sodium silicate as a conventional beneficiation inhibitor, containing a certain amount of colloidal SiO2Also, there may be HSiO produced by hydrolysis or dissociation3、H2SiO3These substances are very easily adsorbed on the silicate surface, making it hydrophilic and inhibited, and similarly, sodium silicate can inhibit some other gangue minerals. Sodium hexametaphosphate is a good inhibitor for silicates and calcites, limestone. It is generally believed to react with calcium ions on the mineral surface to form a precipitate. The above two medicines have ideal silicate inhibition effect, but not ideal non-silicate gangue inhibition effect.
The invention patent application No. cn201610929753.x discloses a combination inhibitor for inhibiting fine-grained silicate gangue. The inhibitor disclosed by the invention patent is prepared from the following raw materials in percentage by weight: 85-95% of sodium carboxymethylcellulose and 5-15% of guar gum. Guar gum is a high molecular organic inhibitor, has the effects of flocculation and filter aid, and can inhibit the talc and the clayey substances which are easy to float with a small dosage. The sodium carboxymethylcellulose and guar gum combined inhibitor has higher efficiency and less dosage compared with the conventional water glass. According to the description of the invention, the method adopts twice rough concentration, improves the recovery rate of molybdenum and sulfur on the premise of effectively inhibiting the silicate gangue, and essentially aims at the product which is still the silicate gangue.
The invention patent with the application number of CN201710265701.1 discloses a combined inhibitor for inhibiting pumice minerals such as talc and a using method thereof. Among the inhibitors, sodium silicate: CD is 1:1-1:3, and the formula of CD is aluminium sulfate 30-60%, dextrin 10-20% and carboxymethyl cellulose (CMC) 20-40%. The combined inhibitor can reduce floatability of pumice mineral such as talc, mica, calcite, chlorite, etc. However, the technical scheme disclosed by the invention does not fully consider the influence of the foam viscosity on the flotation process, and when the foam viscosity is too high, the pumice and the molybdenite are bonded, the pumice is more easily brought into a mineralized foam layer, and the selectivity of the flotation process is reduced.
Therefore, it is required to find a molybdenite beneficiation inhibitor which has a wide application range and a good inhibition effect and can reduce the foam viscosity of a mineralized layer.
Disclosure of Invention
In order to solve the problems in the background art, the invention firstly provides a molybdenite beneficiation inhibitor and secondly provides a preparation method of the molybdenite beneficiation inhibitor.
A molybdenite beneficiation inhibitor: the water-soluble paint consists of A, B components and water, wherein the weight ratio of the A component to the B component is 1:1-1:2.5, and the weight ratio of the sum of the A component and the B component to the water is 1:19-3: 17;
wherein the component A comprises the following components in parts by weight:
80-95 parts of sodium silicate;
5-20 parts of Guerban;
the component B comprises the following components in parts by weight:
50-80 parts of aluminum sulfate;
5-10 parts of potassium aluminum sulfate dodecahydrate;
15-30 parts of sodium carboxymethylcellulose;
5-15 parts of tannin extract;
10-25 parts of dextrin.
Preferably, the sodium silicate used is industrial sodium silicate, and the content of impurities such as alumina and iron is below 0.32%.
Preferably, the aluminium sulphate used is industrial aluminium sulphate, the iron content of which is below 0.01%.
Preferably, the mass fraction of the aluminum potassium sulfate dodecahydrate is more than 99.5%.
Preferably, the sodium carboxymethylcellulose should not contain starch or starch derivatives.
Preferably, the dextrin used has a moisture content of less than 6.0% and a pH of 4.5-6.5.
A preparation method of molybdenite beneficiation inhibitor comprises the following steps:
s1, weighing the component A and the component B according to a formula, and dissolving the components in water to prepare an aqueous solution with the weight fraction of 5-15%;
s2, stirring and homogenizing the aqueous solution obtained in the step S1 to obtain the molybdenite beneficiation inhibitor.
In addition, the dosage of the ore inhibitor is 300 to 900 grams per ton.
The idea of the invention is that the components in the inhibitor are selectively adsorbed on the surfaces of various kinds of pumice stones, and the pumice stones are made to have hydrophilicity through the hydrophilic groups, so that the pumice stones are prevented from floating to a mineralized foam layer along with bubbles, and the adsorption force between the pumice stones and the collecting agent can be reduced or blocked. In addition, the inhibitor disclosed by the invention also contains aluminum potassium sulfate dodecahydrate (namely alum), and the alum component is not contained in the conventional molybdenite beneficiation inhibitor component.
The invention has the following beneficial effects: through organic combination of various components, water films can be formed on easily ground and floated gangue such as mica, talcum, calcite, chlorite, graphite and the like contained in the molybdenite, the molybdenite has good hydrophilicity, hydrophobic foaming is avoided, in addition, the use of tannin extract reduces the viscosity of ore pulp and foam, and the adsorption effect between the gangue and a collecting agent is also reduced or blocked, so that the manufacturability problem of pulp foam stickiness in the ore pulp separation process is solved, the collecting efficiency of the collecting agent is also improved, the grade and recovery rate of the collected molybdenum ore are improved, and the mineral recovery rate can be improved by 2-4% under the condition of the same-grade coarse ore, so that more concentrate is obtained, and the effect is obvious from the view of internal angle.
Detailed Description
The present invention is described below with reference to specific examples, but the present invention is only illustrated and not limited to the technical solutions of the present invention, and the technical solutions obtained by simple superposition and element replacement on the basis of the disclosed examples are all within the scope of the present invention.
Example one
A molybdenite beneficiation inhibitor is composed of A, B components and water, wherein the weight ratio of the A component to the B component is 1:2.5, and the weight ratio of the sum of the A component and the B component to the water is 3: 17;
wherein the component A comprises the following components in parts by weight:
95 parts of sodium silicate;
5 parts of guar gum (also known as guar gum);
the component B comprises the following components in parts by weight:
80 parts of aluminum sulfate;
5 parts of potassium aluminum sulfate dodecahydrate;
30 parts of sodium carboxymethyl cellulose;
5 parts of tannin extract;
and 25 parts of dextrin.
The preparation method of the molybdenite beneficiation inhibitor comprises the following steps:
s1, dissolving the component A and the component B in water to prepare a water solution with the weight percentage of 15%;
s2, stirring and homogenizing the aqueous solution obtained in the step S1 to obtain the molybdenite beneficiation inhibitor.
Wherein the content of impurities such as aluminum oxide and iron in the sodium silicate is below 0.32%, the content of iron in the aluminum sulfate is below 0.01%, the mass fraction of the used aluminum potassium sulfate dodecahydrate is above 99.5%, and the sodium carboxymethylcellulose should not contain starch or starch derivatives.
Preferably, the dextrin used has a moisture content of less than 6.0% and a pH of 4.5-6.5.
When carrying out the molybdenite flotation process, firstly, a molybdenite beneficiation inhibitor in the embodiment is prepared, and then, the preparation of ore pulp is carried out: molybdenite containing 20-30% talc is pulverized with water to 55% of particles below 200 mesh to obtain a slurry, which is then subjected to flotation.
The idea of pre-floating talc is adopted in the flotation process:
1. adding foaming agent, aerating to make talc and other easy-to-float gangue float upwards to form mineralized foam, then collecting mineralized foam to obtain coarse and fine talc, and the tailings are molybdenite with 60-95% of talc and other easy-to-float gangue removed;
2. adding a Mo16 molybdenum-selecting collecting agent and a conventional foaming agent which are disclosed in the invention patent with the application number of CN201910587368.5 of Xian Zhengtang mining science and technology company Limited to tailings for conventional flotation, and collecting mineralized foam to obtain molybdenum concentrate;
3. the molybdenite beneficiation inhibitor prepared in the embodiment is added into the ore pulp formed by the coarse and fine talc in the step 1 according to the adding amount of 750 g/(ton ore) so as to inhibit the upward floating of the easy-to-float gangue, the Mo16 molybdenum separation collecting agent is added according to the adding amount of 120 g/(ton ore), the foaming agent is supplemented, the pH value of the ore pulp is adjusted to be within the range of 8-10, and the molybdenum ore is stirred, aerated and floated.
Example two
A molybdenite beneficiation inhibitor is composed of A, B components and water, wherein the weight ratio of the A component to the B component is 1:1, and the weight ratio of the sum of the A component and the B component to the water is 1: 19;
wherein the component A comprises the following components in parts by weight:
80 parts of sodium silicate;
20 parts of guar gum (also called guar gum);
the component B comprises the following components in parts by weight:
50 parts of aluminum sulfate;
10 parts of potassium aluminum sulfate dodecahydrate;
15 parts of sodium carboxymethyl cellulose;
15 parts of tannin extract;
and 10 parts of dextrin.
The preparation method of the molybdenite beneficiation inhibitor comprises the following steps:
s1, dissolving the component A and the component B in water to prepare an aqueous solution with the weight fraction of 5%;
s2, stirring and homogenizing the aqueous solution obtained in the step S1 to obtain the molybdenite beneficiation inhibitor.
Wherein the content of impurities such as aluminum oxide and iron in the sodium silicate is below 0.32%, the content of iron in the aluminum sulfate is below 0.01%, the mass fraction of the used aluminum potassium sulfate dodecahydrate is above 99.5%, and the sodium carboxymethylcellulose should not contain starch or starch derivatives.
In use, a molybdenite beneficiation inhibitor in the embodiment is prepared first, and then ore pulp preparation is carried out: molybdenite containing 20-30% talc is pulverized with water to 60% of particles below 200 mesh to obtain a slurry, which is then subjected to flotation.
The idea of directly inhibiting the pumice stone is adopted in the flotation process: the molybdenite beneficiation inhibitor prepared in the present example was added to the ore slurry at an amount of 750 g/(ton of ore), and the Mo16 molybdenum separation collector and foaming agent disclosed in the patent application No. CN201910587368.5 of science and technology ltd, west anzheng tang mining industry, was added to the ore slurry at an amount of 120 g/(ton of ore), and the molybdenum ore was floated by stirring and aerating the mixture sufficiently homogeneously, adjusting the PH of the ore slurry to a range of 8 to 10.
Tests show that aiming at the flotation production of molybdenite rich in pumice, the grade of molybdenum concentrate obtained by selecting the molybdenite beneficiation inhibitor and the collector combined beneficiation disclosed by the invention is more than 40-45%, and the molybdenum recovery rate is more than 75-86%, and under the same grade, the mineral recovery rate by using the technical scheme disclosed by the invention can be improved by 2-4%, so that more concentrates can be obtained from the coarse ores with the same grade.
The details of the present invention are not described in the prior art.
Claims (7)
1. The molybdenite beneficiation inhibitor is characterized in that: the water-soluble paint consists of A, B components and water, wherein the weight ratio of the A component to the B component is 1:1-1:2.5, and the weight ratio of the sum of the A component and the B component to the water is 1:19-3: 17;
wherein the component A comprises the following components in parts by weight:
80-95 parts of sodium silicate;
5-20 parts of Guerban;
the component B comprises the following components in parts by weight:
50-80 parts of aluminum sulfate;
5-10 parts of potassium aluminum sulfate dodecahydrate;
15-30 parts of sodium carboxymethylcellulose;
5-15 parts of tannin extract;
10-25 parts of dextrin.
2. The molybdenite beneficiation inhibitor according to claim 1, characterized in that: the sodium silicate is industrial sodium silicate, and the content of impurities such as alumina and iron is below 0.32%.
3. The molybdenite beneficiation inhibitor according to claim 1, characterized in that: the aluminum sulfate is industrial aluminum sulfate, and the iron content is below 0.01 percent.
4. The molybdenite beneficiation inhibitor according to claim 1, characterized in that: the mass fraction of the aluminum potassium sulfate dodecahydrate is more than 99.5 percent.
5. The molybdenite beneficiation inhibitor according to claim 1, characterized in that: sodium carboxymethylcellulose should not contain starch or starch derivatives.
6. The molybdenite beneficiation inhibitor according to claim 1, characterized in that: the dextrin has a water content of below 6.0% and a pH of 4.5-6.5.
7. A method for preparing the molybdenite beneficiation inhibitor according to claim 1, characterized in that: the method comprises the following steps:
s1, weighing the component A and the component B according to a formula, and dissolving the components in water to prepare an aqueous solution with the weight fraction of 5-15%;
s2, stirring and homogenizing the aqueous solution obtained in the step S1 to obtain the molybdenite beneficiation inhibitor.
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