CN115415043A - Semi-definite distribution method of estramustine in pyrite beneficiation process - Google Patents
Semi-definite distribution method of estramustine in pyrite beneficiation process Download PDFInfo
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- CN115415043A CN115415043A CN202210853136.1A CN202210853136A CN115415043A CN 115415043 A CN115415043 A CN 115415043A CN 202210853136 A CN202210853136 A CN 202210853136A CN 115415043 A CN115415043 A CN 115415043A
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- sulfur
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- ore
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- flotation
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- FRPJXPJMRWBBIH-RBRWEJTLSA-N estramustine Chemical compound ClCCN(CCCl)C(=O)OC1=CC=C2[C@H]3CC[C@](C)([C@H](CC4)O)[C@@H]4[C@@H]3CCC2=C1 FRPJXPJMRWBBIH-RBRWEJTLSA-N 0.000 title claims abstract description 37
- 229960001842 estramustine Drugs 0.000 title claims abstract description 37
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910052683 pyrite Inorganic materials 0.000 title claims abstract description 37
- 239000011028 pyrite Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000011593 sulfur Substances 0.000 claims abstract description 180
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 180
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 179
- 239000012141 concentrate Substances 0.000 claims abstract description 160
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 86
- 238000005188 flotation Methods 0.000 claims abstract description 74
- 229910052742 iron Inorganic materials 0.000 claims abstract description 43
- 239000002738 chelating agent Substances 0.000 claims abstract description 20
- 239000004088 foaming agent Substances 0.000 claims abstract description 18
- 238000001179 sorption measurement Methods 0.000 claims abstract description 18
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000012991 xanthate Substances 0.000 claims abstract description 17
- 230000005291 magnetic effect Effects 0.000 claims abstract description 16
- 238000007885 magnetic separation Methods 0.000 claims abstract description 14
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 12
- 238000005303 weighing Methods 0.000 claims abstract description 6
- ROBFUDYVXSDBQM-UHFFFAOYSA-N hydroxymalonic acid Chemical compound OC(=O)C(O)C(O)=O ROBFUDYVXSDBQM-UHFFFAOYSA-N 0.000 claims description 10
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 9
- 229910000365 copper sulfate Inorganic materials 0.000 claims description 6
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 6
- XILWPJQFJFHOSI-UHFFFAOYSA-L dichloropalladium;dihydrate Chemical compound O.O.[Cl-].[Cl-].[Pd+2] XILWPJQFJFHOSI-UHFFFAOYSA-L 0.000 claims description 6
- 230000009920 chelation Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012764 semi-quantitative analysis Methods 0.000 claims description 3
- 230000000007 visual effect Effects 0.000 abstract description 3
- TUZCOAQWCRRVIP-UHFFFAOYSA-N butoxymethanedithioic acid Chemical compound CCCCOC(S)=S TUZCOAQWCRRVIP-UHFFFAOYSA-N 0.000 description 9
- 238000011084 recovery Methods 0.000 description 4
- 229910052952 pyrrhotite Inorganic materials 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002699 waste material 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
Abstract
The invention relates to a semi-definite distribution method of estramustine in a pyrite beneficiation process, which comprises the following steps: firstly, grinding ore: grinding the pyrite containing the estramute; secondly, roughly selecting sulfur in sections: adding chelating agent MHA, collecting agent xanthate and foaming agent 2 into ore pulp # Carrying out flotation on oil to obtain sulfur rough concentrate I and flotation tailings I; then adding chelating agent MHA, collecting agent xanthate and foaming agent 2 # Carrying out flotation on the oil to obtain a sulfur rough concentrate II and flotation tailings II; then adding collecting agent xanthate and foaming agent 2 # Carrying out flotation on the oil to obtain sulfur rough concentrate III and flotation tailings III; … … finally adding collector xanthate and foaming agent 2 # The oil floatsSelecting to obtain sulfur rough concentrate N and flotation tailings N; performing semi-definite analysis on the content of the estramustine: respectively carrying out magnetic adsorption on the sulfur rough concentrate obtained in the second step by a common magnet through a plastic measuring cup, observing the ore adsorption amount, and weighing the adsorbed ore; fourthly, carrying out sulfur selection; fifthly, carrying out magnetic separation on iron. The invention is simple and visual, and can improve the resource utilization rate.
Description
Technical Field
The invention relates to the technical field of mineral processing, in particular to a semi-definite distribution method of estrianite in a pyrite beneficiation process.
Background
Pyrite containing estrianite, iron exists mainly in the form of estrianite, magnetite is very low in content and is a refractory ore because it is both floatable and magnetic, and pyrrhotite can enter into the sulphur concentrate by flotation and also into the iron concentrate by female flotation. A difficulty in the beneficiation of pyrite containing estrianite is therefore the distribution of the estrianite in the pyrite, i.e. the trend of the estrianite. If a large amount of the estramustine ore enters the sulfur concentrate, the quality of the sulfur concentrate is influenced; if a large amount of the estramustine ore enters the iron ore concentrate, the estramustine ore is difficult to be separated cleanly through magnetic separation, so that the recovery rate of the pyrite is low, and further, the resource waste is caused.
Therefore, how to reasonably distribute the estramustine in the sulfur concentrate and the iron concentrate and improve the recovery rate of the sulfur and the iron as much as possible is the key for sorting the pyrite containing the estramustine at present.
Disclosure of Invention
The invention aims to provide a simple and visual semi-quantitative distribution method for the estrianite in the pyrite beneficiation process, which improves the resource utilization rate.
In order to solve the problems, the semi-definite distribution method of the estramustine in the pyrite beneficiation process comprises the following steps:
the method comprises the steps of grinding:
grinding the pyrite containing the estrianite as raw ore to obtain ore pulp with the grinding concentration of 50-60% and the grinding fineness of less than 0.074mm, wherein the content of the ore pulp is 60-65%;
secondly, roughly selecting sulfur in sections:
adjusting the concentration of the ore pulp to be 35-50%, adding 50-100g/t of chelating agent MHA, 60-80g/t of collecting agent xanthate and 2% of foaming agent according to the dry ore weight of the raw ore # Carrying out first stage flotation for 3min by using 50-60g/t oil to obtain sulfur rough concentrate I and flotation tailings I; then adding chelating agent MHA 50-80g/t, collecting agent xanthate 60-80g/t and foaming agent 2 # Performing second stage flotation on the oil at the concentration of 30 to 40g/t for 1min to obtain sulfur rough concentrate II and flotation tailings II; then adding 30 to 50g/t of collector xanthate and 2 as a foaming agent # Performing third-stage flotation for 1min by using oil at the concentration of 20-30g/t to obtain sulfur rough concentrate III and flotation tailings III; … … finally adding collector xanthate 20-30g/t and foaming agent 2 # Performing N-stage flotation for 1min under oil content of 10-20g/t to obtain sulfur rough concentrate N and flotation tailings N;
performing semi-quantitative analysis on the content of the estramustine:
placing a common magnet into an empty plastic measuring cup, wherein the common magnet carries out magnetic adsorption on the sulfur rough concentrate I, the sulfur rough concentrate II and the sulfur rough concentrate III … … sulfur rough concentrate N obtained in the second step respectively through the plastic measuring cup, observing the ore adsorption amount, and weighing the adsorbed ore;
when the amount of the adsorbed ore is more than half of the weight of the sulfur rough concentrate, semi-deterministically judging that more than half of the sulfur rough concentrate is the estramustine; the times of sulfur roughing are X and X is less than N;
when the amount of the adsorbed ore is basically equal to the weight of the sulfur rough concentrate, semi-deterministically judging that the sulfur rough concentrate is basically all the estramustine; at the moment, the number of times of sulfur roughing is Y, and X is more than Y and less than N, the sulfur roughing is considered to be stopped;
fourth, sulfur selection:
respectively carrying out two-time concentration on sulfur rough concentrate I, sulfur rough concentrate II, sulfur rough concentrate III, … …, sulfur rough concentrate X-sulfur rough concentrate I, sulfur rough concentrate II, sulfur rough concentrate III, … … and sulfur rough concentrate Y to obtain sulfur concentrate and middling; when the grade of the sulfur concentrate reaches more than 40 percent, the requirement is met;
fifthly, selecting iron:
and respectively carrying out magnetic separation on the flotation tailings X and the flotation tailings X +1 … … Y to obtain iron ore concentrate and magnetic separation tailings.
The process comprises the following steps of: the sulfur grade is 22-26%, the total iron grade is 30-35%, the magnetite content accounts for 6-8% of the total iron, and the estramustine content accounts for 15-17% of the total iron.
The chelating agent MHA is prepared by carrying out chelation reaction on 2~5 parts by weight of tartronic acid, 1~3 parts by weight of copper sulfate and 0.1 to 0.3 part by weight of palladium chloride dihydrate at 15 to 30 ℃ for 30 to 50min.
The magnetic field strength of the common magnet in the step three is 1000 to 3000 Oe.
The magnetic field strength during the magnetic separation in the step fifthly is 600 to 1000 Oe.
Compared with the prior art, the invention has the following advantages:
1. the invention adds a novel synthetic chelating agent MHA which can selectively react with pyrite and cause the surface of the pyrite to generate double decomposition reaction, and simultaneously generates an activated film which is easy to react with a collecting agent to be activated. At the same time, the effect of MHA on the estramustine is not obvious, and only a small part of the estramustine is activated, thus providing room for the distribution of the estramustine.
2. Because the pyrite floats up at a high speed and the estramustine floats up at a low speed, the invention simply separates the pyrite from the estramustine through sectional flotation.
3. According to the invention, the common magnet is adopted to adsorb the sulfur rough concentrate, the upper amount of the estramustine ore is semi-quantitatively judged, and the method is simple and visual.
4. The invention carries out simple sulfur concentration and ferromagnetic concentration on the basis of semi-definite judgment, can quickly determine the time of sulfur roughing, and further determines the distribution amount of the female pyrite in the sulfur concentrate and the iron concentrate.
5. The method is simple and feasible, easy to control, strong in adaptability and low in cost, improves the recovery rate of sulfur and iron as much as possible while not influencing the quality of the sulfur concentrate, and fully improves the resource utilization rate.
Detailed Description
A semi-definite distribution method of estramustine in the pyrite beneficiation process comprises the following steps:
the method comprises the steps of grinding:
grinding the pyrite containing the estrianite as raw ore to obtain ore pulp with the ore grinding concentration of 50-60% and the ore grinding fineness of less than 0.074mm and the content of 60-65%.
Wherein: composition of pyrite containing estrianite: the sulfur grade is 22-26%, the total iron grade is 30-35%, the pyrite content is high, the magnetite content is low and accounts for 6-8% of the total iron, and the estramustine content accounts for 15-17% of the total iron.
Secondly, roughly selecting sulfur in sections:
adjusting the concentration of the ore pulp to be 35-50%, adding 50-100g/t of chelating agent MHA, 60-80g/t of collecting agent xanthate and 2% of foaming agent according to the dry ore weight of the raw ore # Carrying out first stage flotation for 3min by using 50-60g/t oil to obtain sulfur rough concentrate I and flotation tailings I; then adding chelating agent MHA 50-80g/t, collecting agent xanthate 60-80g/t and foaming agent 2 # Carrying out second-stage flotation for 1min by using oil at the concentration of 30-40g/t to obtain sulfur rough concentrate II and flotation tailings II; then adding 30 to 50g/t of collector xanthate and 2 as a foaming agent # Performing third-stage flotation for 1min by using oil at the concentration of 20-30g/t to obtain sulfur rough concentrate III and flotation tailings III; … … finally adding collector xanthate 20-30g/t and foaming agent 2 # And (4) performing N-stage flotation for 10 to 20g/t of oil for 1min to obtain sulfur rough concentrate N and flotation tailings N.
The chelating agent MHA is prepared by carrying out chelation reaction on 5363 parts of tartronic acid, 3263 parts of copper sulfate and 3242 parts of palladium chloride dihydrate at 15-30 ℃ for 30-50min, wherein the parts by weight of the tartronic acid are 2~5 parts, the copper sulfate is 1~3 parts and the palladium chloride dihydrate is 0.1-0.3 part.
The chelating agent MHA is added only twice, because the purpose of adding the chelating agent is to improve the recovery rate of the pyrite as much as possible, the chelating agent is added twice to fully activate the pyrite, and meanwhile, the phenomenon that the subsequent addition of the chelating agent enables a part of easily floating pyrite to float upwards to influence the quality of the sulfur concentrate is prevented. The dosage of other additives is determined by the dosage test of the additives and can not be randomly reduced. The flotation time is determined by a flotation time test, and is generally 1min, the flotation concentrate obtained in the first 3 stages is pyrite because the flotation concentrate obtained in the first 1min is pyrite, so the first 3 stages are combined for 1min, and the flotation is carried out at a normal time interval of 1 min.
Performing semi-quantitative analysis on the content of the estramustine: and (3) adsorbing the sulfur rough concentrate produced each time by using a common magnet, and judging the floating amount of the pyrrhotite in a semi-definite manner.
And putting a common magnet with the magnetic field intensity of 1000 to 3000 Oe into an empty plastic measuring cup, performing magnetic adsorption on the sulfur rough concentrate I, the sulfur rough concentrate II and the sulfur rough concentrate III … … sulfur rough concentrate N obtained in the step two through the plastic measuring cup by the common magnet, observing the adsorption capacity of the ore, and weighing the adsorbed ore.
When the amount of the adsorbed ore is more than half of the weight of the sulfur rough concentrate at the present time, semi-deterministically judging that more than half of the sulfur rough concentrate is the estramustine; the times of sulfur roughing is X and X is less than N.
When the amount of the adsorbed ore is basically equal to the weight of the sulfur rough concentrate at this time, semi-deterministically judging that the sulfur rough concentrate is basically all the estramustine; at this time, the number of times of sulfur roughing is Y, and X < Y < N, the sulfur roughing is considered to be stopped.
Fourthly, sulfur selection:
respectively carrying out two-time concentration on sulfur rough concentrate I, sulfur rough concentrate II, sulfur rough concentrate III, … …, sulfur rough concentrate X-sulfur rough concentrate I, sulfur rough concentrate II, sulfur rough concentrate III, … … and sulfur rough concentrate Y to obtain sulfur concentrate and middling; when the grade of the sulfur concentrate reaches more than 40 percent, the requirement is met.
Fifthly, iron magnetic selection:
and respectively carrying out magnetic separation on the flotation tailings X and the flotation tailings X +1 … … and the flotation tailings Y, wherein the magnetic field strength is 600-1000 Oe, and obtaining iron ore concentrate and magnetic separation tailings.
When the grade of the iron ore concentrate is over 50 percent and the sulfur and iron contents in the magnetic separation tailings are not high, the requirement is met. Iron concentrate is not of high grade and contains high sulphur, which is inevitable. So the iron ore concentrate needs to be sold after roasting or after being matched with other high-quality ore concentrates.
Firstly, grinding ore, adjusting the ore pulp to a proper concentration after grinding the ore, adding a chelating agent MHA, a collecting agent and a foaming agent to perform sulfur sectional roughing to obtain sulfur rough concentrate and flotation tailings; and adsorbing the sulfur rough concentrate by using a common magnet, and judging the upper amount of the estramustine according to the adsorption amount so as to determine the subsequent conditions of sulfur concentration and flotation tailing magnetic separation, and determine the distribution and the orientation of pyrrhotite on the premise of meeting the sulfur concentrate quality and the iron concentrate quality.
Example 1
The research of process mineralogy on certain pyrite in inner Mongolia shows that sulfur mainly exists in the form of pyrite and estramustine, iron mainly exists in the form of estramustine and magnetite, and the content of the magnetite is low. The sulfur grade of the raw ore is 23.15 percent, the total iron content is 32.54 percent, the magnetite content accounts for 6.5 percent of the total iron, and the estramute content accounts for 16.5 percent of the total iron.
The concentration of the ground ore is 55 percent, the content of the ground ore with the fineness less than 0.074mm is 62.44 percent. MHA 80g/t, butyl xanthate 70 g/t, 2 are added # And (4) oil of 55g/t, performing flotation for the first stage for 3min to obtain sulfur rough concentrate I and flotation tailings I. Adding MHA 60g/t and butyl xanthate 60g/t and 2 # Oil 35g/t, flotation time 1min to obtain sulfur rough concentrate II and flotation tailings II. Adding butyl xanthate 40g/t, 2 # Oil 25g/t, flotation time 1min, and sulfur rough concentrate III and flotation tailings III are obtained. Adding 20g/t and 2 g of butyl xanthate # 10g/t of oil, and 1min of flotation time to obtain sulfur rough concentrate IV and flotation tailings IV. Chelating agent MHA is prepared by chelating 3 g, 2 g copper sulfate, 0.1 g palladium chloride dihydrate at 20 deg.C for 40 min.
And (3) putting a common magnet with the magnetic field intensity of 1500Oe into a plastic beaker, respectively adsorbing the sulfur rough concentrate I, the sulfur rough concentrate II, the sulfur rough concentrate III and the sulfur rough concentrate IV, and respectively weighing the adsorbed ore and the non-adsorbed ore. The results show that the adsorption capacity to the sulfur rough concentrate I is basically zero, the adsorption capacity to the sulfur rough concentrate II accounts for one fourth of the weight of the sulfur rough concentrate II, the adsorption capacity to the sulfur rough concentrate III accounts for two thirds of the weight of the sulfur rough concentrate III, and the adsorption capacity to the sulfur rough concentrate IV accounts for one hundred percent of the weight of the sulfur rough concentrate IV.
And (3) carrying out concentration twice on the sulfur rough concentrate I, the sulfur rough concentrate II and the sulfur rough concentrate III to obtain a sulfur concentrate III (the grade of the sulfur concentrate III is 41.25%), and carrying out concentration twice on the sulfur rough concentrate I, the sulfur rough concentrate II, the sulfur rough concentrate III and the sulfur rough concentrate IV to obtain a sulfur concentrate IV (the grade of the sulfur concentrate is 39.14%).
When the magnetic field intensity of the flotation tailings III and the flotation tailings IV is 800 Oe, the iron concentrate grade obtained by magnetic separation is 52.41 percent respectively, the sulfur grade in the flotation tailings is 1.95 percent, the iron grade is 10.12 percent and 50.85 percent, the sulfur grade in the flotation tailings IV is 1.23 percent, and the iron grade is 9.65 percent.
Because the grade of the sulfur concentrate IV is 39.14 percent, the condition is not met, because the sulfur rough concentrate IV is basically all the estrianite, and the part of the estrianite enters the sulfur concentrate to influence the quality of the sulfur concentrate. Therefore, the sulfur roughing time is controlled to be 5min.
Example 2
The pyrite in Gansu has high content of the Ormosite and low content of the magnetite. The sulfur grade of the raw ore is 25.22%, the total iron content is 34.25%, the magnetite content accounts for 6.8% of the total iron, and the pyrite content accounts for 16.0% of the total iron.
The concentration of ore grinding is 55%, and the content of ore grinding fineness is less than 0.074mm and 65%. MHA 75 g/t, butyl xanthate 65g/t, 2 are added # 50g/t of oil, and 3min of flotation time to obtain sulfur rough concentrate I and flotation tailings I; adding MHA 60g/t and butyl xanthate 65g/t and 2 # Oil 40g/t, and flotation time 1min to obtain sulfur rough concentrate II and flotation tailings II; adding butyl xanthate 35g/t, 2 # Oil 20g/t, flotation time 1min, obtaining sulfur rough concentrate III and flotation tailings III; adding 20g/t and 2 g of butyl xanthate # 10g/t of oil, and 1min of flotation time to obtain sulfur rough concentrate IV and flotation tailings IV; adding 10g/t and 2 g of butyl xanthate # 10g/t of oil, and 1min of flotation time, and obtaining sulfur rough concentrate V and flotation tailings V. Chelating agent MHA is prepared by chelating tartronic acid 4 g, copper sulfate 3 g, palladium chloride dihydrate 0.2 g at 30 deg.C for 50 min.
And placing a common magnet with the magnetic field intensity of 1500Oe into a plastic beaker, respectively adsorbing the sulfur rough concentrate I, the sulfur rough concentrate II, the sulfur rough concentrate III, the sulfur rough concentrate IV and the sulfur rough concentrate V, and respectively weighing the adsorbed ore and the non-adsorbed ore. The results show that the adsorption capacity on the sulfur rough concentrate I is basically zero, the adsorption capacity on the sulfur rough concentrate II is basically zero, the adsorption capacity on the sulfur rough concentrate III accounts for one third of the weight of the sulfur rough concentrate III, the adsorption capacity on the sulfur rough concentrate IV accounts for three fifths of the weight of the sulfur rough concentrate IV, and the adsorption capacity on the sulfur rough concentrate V accounts for one hundred percent of the weight of the sulfur rough concentrate V.
And (2) carrying out concentration twice on the sulfur rough concentrate I, the sulfur rough concentrate II, the sulfur rough concentrate III and the sulfur rough concentrate IV to obtain sulfur rough concentrate (the grade of the sulfur concentrate IV is 41.38%), and carrying out concentration twice on the sulfur rough concentrate I, the sulfur rough concentrate II, the sulfur rough concentrate III, the sulfur rough concentrate IV and the sulfur rough concentrate V to obtain sulfur concentrate V (the grade of the sulfur concentrate V is 38.95%).
When the magnetic field intensity of the flotation tailings IV and the flotation tailings V is 1000 Oe, the obtained iron grade is 51.98%, the sulfur grade of the flotation tailings IV is 1.67%, and the iron grade of the flotation tailings V is 10.27%. And the obtained iron grade is 48.63%, the sulfur grade in the magnetic separation tailings V is 1.21%, and the iron grade is 9.44%.
The sulfur concentrate V grade is 38.95 percent, the iron grade is 48.63 percent, and the conditions are not met, so the sulfur roughing time is controlled to be 6min.
Claims (5)
1. A semi-definite distribution method of estramustine in the pyrite beneficiation process comprises the following steps:
firstly, grinding ore:
grinding the pyrite containing the estrianite as raw ore to obtain ore pulp with the grinding concentration of 50-60% and the grinding fineness of less than 0.074mm, wherein the content of the ore pulp is 60-65%;
secondly, roughly selecting sulfur in sections:
adjusting the concentration of ore pulp to be 35-50%, adding a chelating agent MHA 50-100g/t, a collecting agent xanthate 60-80g/t and a foaming agent 2 according to the dry weight of the raw ore, wherein the chelating agent MHA 50-100g/t, the collecting agent xanthate 60-80g/t and the foaming agent 2 are added # Oil 50 to 60g/t, and performing flotation for the first stage for 3min to obtainObtaining sulfur rough concentrate I and flotation tailings I; then adding a chelating agent MHA 50 to 80g/t, a collecting agent xanthate 60 to 80g/t and a foaming agent 2 # Performing second stage flotation on the oil at the concentration of 30 to 40g/t for 1min to obtain sulfur rough concentrate II and flotation tailings II; then adding 30 to 50g/t of collector xanthate and 2 as a foaming agent # Performing third-stage flotation for 1min by using oil at the concentration of 20-30g/t to obtain sulfur rough concentrate III and flotation tailings III; … … finally adding collector xanthate 20-30g/t and foaming agent 2 # Performing N-stage flotation for 10 to 20g/t of oil for 1min to obtain sulfur rough concentrate N and flotation tailings N;
performing semi-quantitative analysis on the content of the estramustine:
placing a common magnet into an empty plastic measuring cup, wherein the common magnet carries out magnetic adsorption on the sulfur rough concentrate I, the sulfur rough concentrate II and the sulfur rough concentrate III … … sulfur rough concentrate N obtained in the second step respectively through the plastic measuring cup, observing the ore adsorption amount, and weighing the adsorbed ore;
when the amount of the adsorbed ore is more than half of the weight of the sulfur rough concentrate, semi-deterministically judging that more than half of the sulfur rough concentrate is the estramustine; the times of sulfur roughing are X and X is less than N;
when the amount of the adsorbed ore is basically equal to the weight of the sulfur rough concentrate, semi-deterministically judging that the sulfur rough concentrate is basically all the estramustine; at the moment, the number of times of sulfur roughing is Y, and X is more than Y and less than N, the sulfur roughing is considered to be stopped;
fourthly, sulfur selection:
respectively carrying out two-time concentration on sulfur rough concentrate I, sulfur rough concentrate II, sulfur rough concentrate III, … …, sulfur rough concentrate X-sulfur rough concentrate I, sulfur rough concentrate II, sulfur rough concentrate III, … … and sulfur rough concentrate Y to obtain sulfur concentrate and middling; when the grade of the sulfur concentrate reaches more than 40 percent, the requirement is met;
fifthly, selecting iron:
and respectively carrying out magnetic separation on the flotation tailings X and the flotation tailings X +1 … … Y to obtain iron ore concentrate and magnetic separation tailings.
2. The semidefinite distribution method of the estramustine in the pyrite beneficiation process according to claim 1, characterized by comprising: the method comprises the following steps of: the sulfur grade is 22-26%, the total iron grade is 30-35%, the magnetite content accounts for 6-8% of the total iron, and the estramustine content accounts for 15-17% of the total iron.
3. The semidefinite distribution method of the estramustine in the pyrite beneficiation process according to claim 1, characterized by comprising: the chelating agent MHA is prepared by carrying out chelation reaction on 2~5 parts by weight of tartronic acid, 1~3 parts by weight of copper sulfate and 0.1 to 0.3 part by weight of palladium chloride dihydrate at 15 to 30 ℃ for 30 to 50min.
4. The semidefinite distribution method of the estramustine in the pyrite beneficiation process according to claim 1, characterized by comprising: the magnetic field intensity of the common magnet in the step is 1000 to 3000 Oe.
5. The semidefinite distribution method of the estramustine in the pyrite beneficiation process according to claim 1, characterized by comprising: the magnetic field intensity during the magnetic separation in the step fifthly is 600 to 1000 Oe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210853136.1A CN115415043A (en) | 2022-07-20 | 2022-07-20 | Semi-definite distribution method of estramustine in pyrite beneficiation process |
Applications Claiming Priority (1)
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