CN103386369A - Ore dressing method for iron ore concentrate floatation in Bayan Obo tailings - Google Patents
Ore dressing method for iron ore concentrate floatation in Bayan Obo tailings Download PDFInfo
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Abstract
The invention discloses an ore dressing method for iron ore concentrate floatation in Bayan Obo tailings, which belongs to the technical field of dressing of iron core in mineral processing engineering. The ore dressing method is used for recovering iron minerals such as magnetite, hematite and the like in Bayan Obo tailings. The method comprises the following steps: pre-grading Bayan Obo tailings serving as raw materials; performing ball milling on obtained coarse ore, returning and grading; performing size mixing on obtained fine ore, and carrying out bulk flotation; and treating bulk flotation tailings serving as raw materials for iron ore floatation with a direct flotation-reverse flotation technology to obtain iron ore concentrate of which the grade TFe is more than or equal to 62 percent and the iron recovery rate is more than or equal to 75 percent.
Description
Technical field
The present invention relates to a kind of beneficiation method of Bayan Obo mine tailing flotation iron ore concentrate, belong to the technique of preparing field of Mineral Processing Engineering iron ore.
Background technology
The Bayan Obo mine tailing is different from general mine tailing, the Bayan Obo mine tailing is the iron selection tailings of the rare many metals mineral intergrowth in the world, the comprehensive recovery not owing to selecting iron, cause most of paragenous mineral all to enter Tailings Dam, except iron resource is partially recycled, the elements such as other resource such as rare earth, niobium, fluorite, thorium are discharged into Tailings Dam together, and the inside still has 30% iron resource not to be recovered utilization, TFe is in 18% left and right, this part iron mineral is of a great variety, but oxide---magnetic iron ore and bloodstone that main callable iron mineral are iron.
In recent years,, for different iron ores, all compare deep research both at home and abroad, proposed can select the technological process of high grade iron concentrate and develop some novel the most efficient flotation reagents.Now floatation process mainly contains: floatation process (positive and negative floatation process), magnetic flotation, flotation column, biological flotation, Magnetic field screening method and polytechnicly unite use etc.
The key of flotation success, a big chunk depends on the selecting properly of floating agent.Why it can be widely used in mineral processing, and most important reason is that it can control floatation process flexibly effectively by floating agent, successfully the requirement of mineral by people is separated, and resource is fully utilized.
Because the iron ore gangue is mainly silicates, so iron ore reverse flotation institute with medicament finally is summed up as the collecting agent of silicates mineral.At present, silicates mineral collecting agent used is divided into two large classes substantially: cationic flotation medicament, anionic flotation medicament.
Be used for now the anion collecting agent of reverse flotation iron ore, because needs add starch, as inhibitor, cause the filtration of concentrate difficult, the while complex technical process, the medicament kind that needs is many, as activator, inhibitor, collecting agent, adjusting agent.Cao Honghong etc. once reported: the reverse flotation iron concentrate ore pulp is acidified to pH=6～8, and temperature is elevated to 35 ℃ of left and right, can significantly reduce the viscosity of starch milk, improve filter efficiency, reduce filter cake moisture, but this complexity that will increase technique strengthens the flotation cost simultaneously.Though simple for the direct flotation technological process, there are the following problems:, because the emersion amount is large, cause the consumption of floating agent large, beneficiation cost is high.And cation reverse flotation technique has overcome the deficiency of direct floatation process and anion reverse floatation technique.
Summary of the invention
the technical issues that need to address of the present invention just are to overcome the defect of prior art, a kind of beneficiation method of Bayan Obo mine tailing flotation iron ore concentrate is provided, it is a kind of for magnetic iron ore in the Bayan Obo mine tailing, the beneficiation method that the iron minerals such as bloodstone reclaim, take the Bayan Obo mine tailing as raw material, carry out pre-classification, after the coarse grain ore that obtains is carried out ball milling and return to classification, after being sized mixing, the smitham that obtains carries out bulk flotation, the bulk flotation mine tailing is as the raw material of Iron Ore Flotation stone, through top-uping-anti-floating technique, final grade TFe 〉=62% that obtains, the iron ore concentrate of iron recovery 〉=75%.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of beneficiation method of Bayan Obo mine tailing flotation iron ore concentrate, complete according to the following steps:
(1) pre-classification ore grinding: the Bayan Obo mine tailing is carried out classification process, coarse grain ore and smitham are separated, the ball mill fine grinding of coarse grain ore in sand form, return to grader after mill, the smitham that obtains, as next step bulk flotation raw material, requires the smitham granularity to be-200 orders (0.074mm), to account for more than 95% of gross weight;
(2) bulk flotation: join in rougher cell after the Bayan Obo mine tailing smitham that obtains after classification is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select; Roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell;
To roughly select froth pulp and join in first order cleaner cell, adjust pulp density, and stir, and add successively inhibitor and collecting agent, carry out the first order selected; The selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order;
Ore pulp returns and is added in initial separatory cell in first order cleaner cell, and the selected froth pulp of the first order joins in the cleaner cell of the second level, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the second level selected; The selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level;
In the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, and the selected froth pulp in the second level is easily floating mineral;
Join in first order scavenger flotation cell roughly selecting ore pulp in the initial separatory cell that obtains, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order and scan; The first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell;
The first order is scanned froth pulp and is returned and be added in rougher cell, and ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the second level and scans; The second level is scanned to such an extent that scan ore pulp in froth pulp and second level scavenger flotation cell to the second level;
The second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, and in the scavenger flotation cell of the second level, ore pulp is as the raw material of next step Iron Ore Flotation stone;
In bulk flotation, the condition of at every turn adjusting pulp density is: the ore pulp mass concentration is 30～60%, and slurry temperature is 25～45 ℃, and the pH of ore pulp is 8～10;
The floating agent addition adds by medicament and the mass ratio of roughly selecting the ore pulp that adds at every turn, roughly selects: adjusting agent 600～800g/t, inhibitor 800～1200g/t, collecting agent 1000～1400g/t; Each selected and scan: adjusting agent 400～800g/t, inhibitor 600～1200g/t, collecting agent 700～1400g/t;
(3) direct flotation: join in the direct flotation rougher cell after in the second level scavenger flotation cell of bulk flotation, ore pulp is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select; Roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, in initial separatory cell, ore pulp is thrown tail;
To roughly select froth pulp and join in first order cleaner cell, adjust pulp density, and stir, and add successively inhibitor and collecting agent, carry out the first order selected; The selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order;
Ore pulp returns and is added in initial separatory cell in first order cleaner cell, and the selected froth pulp of the first order joins in the cleaner cell of the second level, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the second level selected; The selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level;
Ore pulp returns and is added in first order cleaner cell in the cleaner cell of the second level, and the selected froth pulp in the second level joins in third level cleaner cell, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the third level selected; The selected selected froth pulp of the third level and the interior ore pulp of third level cleaner cell of obtaining of the third level;
In third level cleaner cell, ore pulp returns and is added in the cleaner cell of the second level, and the selected froth pulp of the third level enters anti-floating iron ore operation;
In direct flotation, the condition of at every turn adjusting pulp density is: the ore pulp mass concentration is 30～60%, and slurry temperature is 25～45 ℃, and the pH of ore pulp is 4～6;
The floating agent addition adds by medicament and the mass ratio of roughly selecting the bulk flotation mine tailing that adds at every turn, roughly select: adjusting agent 800～1000g/t, collecting agent 1100～1400g/t, at every turn selected: adjusting agent 500～1000g/t, inhibitors 4 00～800g/t, collecting agent 600～1200g/t;
(4) reverse flotation:, take the selected froth pulp of the third level of direct flotation as raw material, join after sizing mixing in the reverse flotation rougher cell, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select; Roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell; Roughly selecting froth pulp is mine tailing A, and in initial separatory cell, ore pulp is final iron extract mine producation;
In reverse flotation, the flotation pulp mass concentration is 30～60%, and slurry temperature is 25～45 ℃, and the pH of ore pulp is 8～10; The floating agent addition adds by medicament and the mass ratio of roughly selecting the selected foam of the third level that adds direct flotation at every turn, roughly selects: adjusting agent 1200～1400g/t, inhibitor 600～1000g/t, collecting agent 200～400g/t.
In the present invention, described raw material is the Bayan Obo mine tailing, comprises that baiyuneboite selects iron or selects the mine tailing of rare earth.
In the present invention, described classification, its equipment that adopts is a kind of in spiral classifier, hydrocyclone.
In the present invention, the adjusting agent of described bulk flotation is sodium carbonate; Inhibitor is sodium metasilicate; Collecting agent is a kind of in oleic acid or stearic acid.
In the present invention, the adjusting agent of described direct flotation is sulfuric acid; Inhibitor is 12 hydrazine aluminum sulfate potassium; Collecting agent is a kind of in oxidized paraffin wax soap or fatty acid sulfonate.
In the present invention, the adjusting agent of described reverse flotation is sodium carbonate; Inhibitor is a kind of in dextrin or cornstarch; Collecting agent is a kind of in oleic acid or stearic acid.
Ore-dressing technique of the present invention adopts pre-classification ore grinding, bulk flotation easily to float mineral, top-up-anti-floating iron ore flow process, and wherein top-uping of iron carried out the operation of one roughing triple cleaning, the anti-floating one roughing operation of carrying out.
Advantage of the present invention is:
The present invention adopts the method for single flotation, the index of whole technique and each ore-dressing practice has been carried out the control of strict science, thereby can reach technical indicator preferably, adopt the technological processes such as pre-classification ore grinding, bulk flotation, direct flotation, reverse flotation can obtain TFe 〉=62%, the iron ore concentrate of the rate of recovery 〉=75%.
The specific embodiment
Embodiment 1
Baiyuneboite take composition as TFe16.31% selects the mine tailing of iron to be raw material, utilizes technology of the present invention to obtain qualified iron ore concentrate, and concrete steps are as follows:
(1) pre-classification ore grinding: adopt spiral classifier to carry out classification to the Bayan Obo mine tailing and process, coarse grain ore and smitham are separated, the ball mill fine grinding of coarse grain ore in sand form, return to grader after mill, smitham, as next step bulk flotation raw material, obtains the smitham granularity and accounts for 97.4% for-200 orders (0.074mm);
(2) bulk flotation: join in rougher cell after being sized mixing in the Bayan Obo tail smitham ore deposit that obtains after classification, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell;
To roughly select froth pulp and join in first order cleaner cell, and adjust pulp density, and stir, and add successively inhibitor and collecting agent, and carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell;
In first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level;
In the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, and the selected froth pulp in the second level is easily floating mineral;
Join in first order scavenger flotation cell roughly selecting ore pulp in the initial separatory cell that obtains, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order and scan, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell;
The first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level and scan, the second level is scanned to such an extent that scan ore pulp in froth pulp and second level scavenger flotation cell to the second level;
The second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, and in the scavenger flotation cell of the second level, ore pulp is as the raw material of next step flotation iron ore concentrate thing;
In bulk flotation, the condition of at every turn adjusting pulp density is: the ore pulp mass concentration is 41%, and slurry temperature is 34 ℃, and the pH of ore pulp is 8.5;
The floating agent addition adds by medicament and the mass ratio of the ore pulp that adds at every turn, roughly selects: adjusting agent sodium carbonate, addition 650g/t, inhibitor sodium metasilicate, addition 890g/t, collecting agent oleic acid, addition 1100g/t; Primary cleaning: adjusting agent sodium carbonate, addition 450g/t, inhibitor sodium metasilicate, addition 670g/t, collecting agent oleic acid, addition 820g/t; Recleaning: adjusting agent sodium carbonate, addition 460g/t, inhibitor sodium metasilicate, addition 720g/t, collecting agent oleic acid, addition 810g/t; Once purging selection: adjusting agent sodium carbonate, addition 470g/t, inhibitor sodium metasilicate, addition 730g/t, collecting agent oleic acid, addition 850g/t; Secondary is scanned: adjusting agent sodium carbonate, addition 410g/t, inhibitor sodium metasilicate, addition 690g/t, collecting agent oleic acid, addition 840g/t;
(3) direct flotation: join in rougher cell after the mine tailing in the second level scavenger flotation cell of bulk flotation is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, in initial separatory cell, ore pulp is thrown tail;
To roughly select froth pulp and join in first order cleaner cell, and adjust pulp density, and stir, and add successively inhibitor and collecting agent, and carry out the first order selected, the first order is selected obtains ore pulp in the selected froth pulp of the first order and first order cleaner cell;
In first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level;
In the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level joins in third level cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the third level selected, the selected selected froth pulp of the third level and the interior ore pulp of third level cleaner cell of obtaining of the third level;
In third level cleaner cell, ore pulp returns and is added in the cleaner cell of the second level, and the selected froth pulp of the third level enters anti-floating iron ore operation;
In direct flotation, the condition of at every turn adjusting pulp density is: the ore pulp mass concentration is 48%, and slurry temperature is 33 ℃, and the pH of ore pulp is 5.4;
the floating agent addition adds by medicament and the mass ratio of the bulk flotation mine tailing that adds at every turn, roughly select: adjusting agent sulfuric acid, addition 830g/t, the collecting agent oxidized paraffin wax soap, addition 950g/t, the first order is selected: adjusting agent sulfuric acid, addition 510g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 730g/t, the collecting agent oxidized paraffin wax soap, addition 620kg/t, the second level is selected: adjusting agent sulfuric acid, addition 520g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 750g/t, the collecting agent oxidized paraffin wax soap, addition 650g/t, the third level is selected: adjusting agent sulfuric acid, addition 500g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 710g/t, the collecting agent oxidized paraffin wax soap, addition 620g/t,
(4) reverse flotation: take the selected foam of the third level of direct flotation as raw material, join in rougher cell after sizing mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, roughly selecting froth pulp is mine tailing A, and in initial separatory cell, ore pulp is the concentrate product of final iron oxide ore.
The index that reaches is in Table 1; Pulp density is 48%, temperature is 33 ℃, pH values of pulp=8.5～9, the floating agent addition adds by medicament and the mass ratio of roughly selecting the selected foam of the third level of the direct flotation that adds at every turn, adjusting agent sodium carbonate, addition 1250g/t, the inhibitor dextrin, addition 910g/t, collecting agent oleic acid, add consumption 320g/t.
Table 1 flow process mineral processing index
Embodiment 2
Select mine tailing as raw material take composition as the TFe19.86% baiyuneboite is rare, utilize technology of the present invention to obtain qualified iron ore concentrate, concrete steps are as follows:
(1) pre-classification ore grinding: adopt hydrocyclone to carry out classification to the Bayan Obo mine tailing and process, coarse grain ore and smitham are separated, the ball mill fine grinding of coarse grain ore in sand form, return to grader after mill, smitham, as next step bulk flotation raw material, obtains the smitham granularity and accounts for 98.2% for-200 orders (0.074mm);
(2) bulk flotation: join in rougher cell after the Bayan Obo mine tailing smitham that obtains after classification is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily floating mineral, join in first order scavenger flotation cell roughly selecting ore pulp in the initial separatory cell that obtains, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is as the raw material of next step flotation iron ore concentrate thing, the flotation pulp mass concentration is 51%, slurry temperature is 42 ℃, the pH of ore pulp is 8.5, the floating agent addition adds by medicament and the mass ratio of roughly selecting the ore pulp that adds at every turn, roughly selects: adjusting agent sodium carbonate, addition 600g/t, the inhibitor sodium metasilicate, addition 800g/t, collecting agent stearic acid, addition 1000g/t, primary cleaning: adjusting agent sodium carbonate, addition 400g/t, inhibitor sodium metasilicate, addition 600g/t, collecting agent stearic acid, addition 700g/t, recleaning: adjusting agent sodium carbonate, addition 560g/t, inhibitor sodium metasilicate, addition 710g/t, collecting agent stearic acid, addition 980g/t, once purging selection: adjusting agent sodium carbonate, addition 510g/t, inhibitor sodium metasilicate, addition 700g/t, collecting agent stearic acid, addition 920g/t, secondary is scanned: adjusting agent sodium carbonate, addition 430g/t, inhibitor sodium metasilicate, addition 780g/t, collecting agent stearic acid, addition 980g/t,
(3) direct flotation: join in rougher cell after the mine tailing in the second level scavenger flotation cell of bulk flotation is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, in initial separatory cell, ore pulp is thrown tail, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level joins in third level cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the third level selected, the selected selected froth pulp of the third level and the interior ore pulp of third level cleaner cell of obtaining of the third level, in third level cleaner cell, ore pulp returns and is added in the cleaner cell of the second level, the selected froth pulp of the third level enters anti-floating iron ore operation, the flotation pulp mass concentration is 46%, slurry temperature is 36 ℃, the pH of ore pulp is 5.3, the floating agent addition adds by medicament and the mass ratio of roughly selecting the bulk flotation mine tailing that adds at every turn, roughly select: adjusting agent sulfuric acid, addition 800g/t, the collecting agent fatty acid sulfonate, addition 900g/t, the first order is selected: adjusting agent sulfuric acid, addition 500g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 690g/t, the collecting agent fatty acid sulfonate, addition 640kg/t, the second level is selected: adjusting agent sulfuric acid, addition 540g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 400g/t, the collecting agent fatty acid sulfonate, addition 770g/t, the third level is selected: adjusting agent sulfuric acid, addition 610g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 670g/t, the collecting agent fatty acid sulfonate, addition 600g/t,
(4) reverse flotation: take the selected foam of the third level of direct flotation as raw material, join in rougher cell after sizing mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, roughly selecting froth pulp is mine tailing A, in initial separatory cell, ore pulp is the concentrate product of final iron oxide ore, and the index that reaches is in Table 2; Pulp density is 54%, temperature is 38 ℃, ore pulp PH=8.4, the floating agent addition adds by medicament and the mass ratio of roughly selecting the selected foam of the third level of the direct flotation that adds at every turn, adjusting agent sodium carbonate, addition 1200g/t, the inhibitor cornstarch, addition 600g/t, the collecting agent stearic acid, add consumption 200g/t.
Table 2 flow process mineral processing index
Embodiment 3
The rare mine tailing that selects of baiyuneboite take composition as TFe23.78% is raw material, utilizes technology of the present invention to obtain qualified iron ore concentrate, and concrete steps are as follows:
(1) pre-classification ore grinding: adopt spiral classifier to carry out classification to the Bayan Obo mine tailing and process, coarse grain ore and smitham are separated, the ball mill fine grinding of coarse grain ore in sand form, return to grader after mill, smitham, as next step bulk flotation raw material, obtains the smitham granularity and accounts for 97.9% for-200 orders (0.074mm);
(2) bulk flotation: join in rougher cell after the Bayan Obo mine tailing smitham that obtains after classification is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily floating mineral, join in first order scavenger flotation cell roughly selecting ore pulp in the initial separatory cell that obtains, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is as the raw material of next step flotation iron ore concentrate thing, the flotation pulp mass concentration is 42%, slurry temperature is 33 ℃, the pH of ore pulp is 8.5, the floating agent addition adds by medicament and the mass ratio of roughly selecting the ore pulp that adds at every turn, roughly selects: adjusting agent sodium carbonate, addition 800g/t, the inhibitor sodium metasilicate, addition 1200g/t, collecting agent oleic acid, addition 1400g/t, primary cleaning: adjusting agent sodium carbonate, addition 800g/t, inhibitor sodium metasilicate, addition 1200g/t, collecting agent oleic acid, addition 1400g/t, recleaning: adjusting agent sodium carbonate, addition 510g/t, inhibitor sodium metasilicate, addition 870g/t, collecting agent oleic acid, addition 900g/t, once purging selection: adjusting agent sodium carbonate, addition 420g/t, inhibitor sodium metasilicate, addition 740g/t, collecting agent oleic acid, addition 920g/t, secondary is scanned: adjusting agent sodium carbonate, addition 420g/t, inhibitor sodium metasilicate, addition 710g/t, collecting agent oleic acid, addition 950g/t,
(3) direct flotation: join in rougher cell after the mine tailing in the second level scavenger flotation cell of bulk flotation is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, in initial separatory cell, ore pulp is thrown tail, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level joins in third level cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the third level selected, the selected selected froth pulp of the third level and the interior ore pulp of third level cleaner cell of obtaining of the third level, in third level cleaner cell, ore pulp returns and is added in the cleaner cell of the second level, the selected froth pulp of the third level enters anti-floating iron ore operation, the flotation pulp mass concentration is 47%, slurry temperature is 32 ℃, the pH of ore pulp is 5.0, the floating agent addition adds by medicament and the mass ratio of roughly selecting the bulk flotation mine tailing that adds at every turn, roughly select: adjusting agent sulfuric acid, addition 1000g/t, the collecting agent fatty acid sulfonate, addition 1400g/t, the first order is selected: adjusting agent sulfuric acid, addition 1000g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 690g/t, the collecting agent fatty acid sulfonate, addition 630kg/t, the second level is selected: adjusting agent sulfuric acid, addition 510g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 800g/t, the collecting agent fatty acid sulfonate, addition 690g/t, the third level is selected: adjusting agent sulfuric acid, addition 580g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 690g/t, the collecting agent fatty acid sulfonate, addition 1200g/t,
(4) reverse flotation: take the selected foam of the third level of direct flotation as raw material, join in rougher cell after sizing mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, roughly selecting froth pulp is mine tailing A, in initial separatory cell, ore pulp is the concentrate product of final iron oxide ore, and the index that reaches is in Table 3; Pulp density is 46%, temperature is 37 ℃, ore pulp PH=8.2, the floating agent addition adds by medicament and the mass ratio of roughly selecting the selected foam of the third level of the direct flotation that adds at every turn, adjusting agent sodium carbonate, addition 1400g/t, the inhibitor cornstarch, addition 1000g/t, collecting agent oleic acid, add consumption 400g/t.
Table 3 flow process mineral processing index
| The product name | Productive rate (%) | The iron grade | Iron recovery |
| Claim | ? | （%） | （%） |
| Iron ore concentrate | 30.46 | 63.19 | 80.94 |
| Give ore deposit | 100 | 23.78 | 100 |
Embodiment 4
Baiyuneboite iron selection tailings take composition as TFe17.91% is raw material, utilizes technology of the present invention to obtain qualified iron ore concentrate, and concrete steps are as follows:
(1) pre-classification ore grinding: adopt hydrocyclone to carry out classification to the Bayan Obo mine tailing and process, coarse grain ore and smitham are separated, the ball mill fine grinding of coarse grain ore in sand form, return to grader after mill, smitham, as next step bulk flotation raw material, obtains the smitham granularity and accounts for 99.2% for-200 orders (0.074mm);
(2) bulk flotation: join in rougher cell after the Bayan Obo mine tailing smitham that obtains after classification is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily floating mineral, join in first order scavenger flotation cell roughly selecting ore pulp in the initial separatory cell that obtains, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is as the raw material of next step flotation iron ore concentrate thing, the flotation pulp mass concentration is 45%, slurry temperature is 28 ℃, the pH of ore pulp is 8.9, the floating agent addition adds by medicament and the mass ratio of roughly selecting the ore pulp that adds at every turn, roughly selects: adjusting agent sodium carbonate, addition 690g/t, the inhibitor sodium metasilicate, addition 1150g/t, collecting agent stearic acid, addition 1150g/t, primary cleaning: adjusting agent sodium carbonate, addition 550g/t, inhibitor sodium metasilicate, addition 710g/t, collecting agent stearic acid, addition 820g/t, recleaning: adjusting agent sodium carbonate, addition 490g/t, inhibitor sodium metasilicate, addition 790g/t, collecting agent stearic acid, addition 910g/t, once purging selection: adjusting agent sodium carbonate, addition 570g/t, inhibitor sodium metasilicate, addition 830g/t, collecting agent stearic acid, addition 950g/t, secondary is scanned: adjusting agent sodium carbonate, addition 550g/t, inhibitor sodium metasilicate, addition 780g/t, collecting agent stearic acid, addition 940g/t,
(3) direct flotation iron: join in rougher cell after the mine tailing in the second level scavenger flotation cell of bulk flotation is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, in initial separatory cell, ore pulp is thrown tail, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level joins in third level cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the third level selected, the selected selected froth pulp of the third level and the interior ore pulp of third level cleaner cell of obtaining of the third level, in third level cleaner cell, ore pulp returns and is added in the cleaner cell of the second level, the selected froth pulp of the third level enters anti-floating iron ore operation, the flotation pulp mass concentration is 49%, slurry temperature is 33 ℃, the pH of ore pulp is 4.9, the floating agent addition adds by medicament and the mass ratio of roughly selecting the bulk flotation mine tailing that adds at every turn, roughly select: adjusting agent sulfuric acid, addition 930g/t, the collecting agent oxidized paraffin wax soap, addition 1150g/t, the first order is selected: adjusting agent sulfuric acid, addition 620g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 690g/t, the collecting agent oxidized paraffin wax soap, addition 720kg/t, the second level is selected: adjusting agent sulfuric acid, addition 610g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 750g/t, the collecting agent oxidized paraffin wax soap, addition 740g/t, the third level is selected: adjusting agent sulfuric acid, addition 520g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 730g/t, the collecting agent oxidized paraffin wax soap, addition 690g/t,
(4) reverse flotation: take the selected foam of the third level of direct flotation as raw material, join in rougher cell after sizing mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, roughly selecting froth pulp is mine tailing A, in initial separatory cell, ore pulp is the concentrate product of final iron oxide ore, and the index that reaches is in Table 4; Pulp density is 41%, temperature is 40 ℃, ore pulp PH=8.2, the floating agent addition adds by medicament and the mass ratio of roughly selecting the selected foam of the third level of the direct flotation that adds at every turn, adjusting agent sodium carbonate, addition 1300g/t, the inhibitor dextrin, addition 820g/t, the collecting agent stearic acid, add consumption 240g/t.
Table 4 flow process mineral processing index
Embodiment 5
The rare mine tailing that selects of baiyuneboite take composition as TFe21.29% is raw material, utilizes technology of the present invention to obtain qualified iron ore concentrate, and concrete steps are as follows:
(1) pre-classification ore grinding: adopt spiral classifier to carry out classification to the Bayan Obo mine tailing and process, coarse grain ore and smitham are separated, the ball mill fine grinding of coarse grain ore in sand form, return to grader after mill, smitham, as next step bulk flotation raw material, obtains the smitham granularity and accounts for 98.1% for-200 orders (0.074mm);
(2) bulk flotation: join in rougher cell after the Bayan Obo mine tailing smitham that obtains after classification is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level is easily floating mineral, join in first order scavenger flotation cell roughly selecting ore pulp in the initial separatory cell that obtains, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the first order scans, the first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell, the first order is scanned froth pulp and is returned and be added in rougher cell, ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carrying out the second level scans, the second level is scanned to such an extent that scan ore pulp in froth pulp and second level scavenger flotation cell to the second level, the second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, in the scavenger flotation cell of the second level, ore pulp is as the raw material of next step flotation iron ore concentrate thing, the flotation pulp mass concentration is 45%, slurry temperature is 36 ℃, the pH of ore pulp is 9.2, the floating agent addition adds by medicament and the mass ratio of roughly selecting the ore pulp that adds at every turn, roughly selects: adjusting agent sodium carbonate, addition 680g/t, the inhibitor sodium metasilicate, addition 840g/t, collecting agent oleic acid, addition 1050g/t, primary cleaning: adjusting agent sodium carbonate, addition 490g/t, inhibitor sodium metasilicate, addition 690g/t, collecting agent oleic acid, addition 860g/t, recleaning: adjusting agent sodium carbonate, addition 420g/t, inhibitor sodium metasilicate, addition 780g/t, collecting agent oleic acid, addition 870g/t, once purging selection: adjusting agent sodium carbonate, addition 430g/t, inhibitor sodium metasilicate, addition 790g/t, collecting agent oleic acid, addition 810g/t, secondary is scanned: adjusting agent sodium carbonate, addition 480g/t, inhibitor sodium metasilicate, addition 630g/t, collecting agent oleic acid, addition 820g/t,
(3) direct flotation: join in rougher cell after the mine tailing in the second level scavenger flotation cell of bulk flotation is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, in initial separatory cell, ore pulp is thrown tail, to roughly select froth pulp joins in first order cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order selected, the selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order, in first order cleaner cell, ore pulp returns and is added in initial separatory cell, the selected froth pulp of the first order joins in the cleaner cell of the second level, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the second level selected, the selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level, in the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, the selected froth pulp in the second level joins in third level cleaner cell, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the third level selected, the selected selected froth pulp of the third level and the interior ore pulp of third level cleaner cell of obtaining of the third level, in third level cleaner cell, ore pulp returns and is added in the cleaner cell of the second level, the selected froth pulp of the third level enters anti-floating iron ore operation, the flotation pulp mass concentration is 55%, slurry temperature is 37 ℃, the pH of ore pulp is 5.1, the floating agent addition adds by medicament and the mass ratio of roughly selecting the bulk flotation mine tailing that adds at every turn, roughly select: adjusting agent sulfuric acid, addition 860g/t, the collecting agent oxidized paraffin wax soap, addition 980g/t, the first order is selected: adjusting agent sulfuric acid, addition 530g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 770g/t, the collecting agent oxidized paraffin wax soap, addition 610kg/t, the second level is selected: adjusting agent sulfuric acid, addition 590g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 720g/t, the collecting agent oxidized paraffin wax soap, addition 610g/t, the third level is selected: adjusting agent sulfuric acid, addition 590g/t, inhibitor 12 hydrazine aluminum sulfate potassium, addition 730g/t, the collecting agent oxidized paraffin wax soap, addition 690g/t,
(4) reverse flotation: take the selected foam of the third level of direct flotation as raw material, join in rougher cell after sizing mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select, roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, roughly selecting froth pulp is mine tailing A, in initial separatory cell, ore pulp is the concentrate product of final iron oxide ore, and the index that reaches is in Table 5; Pulp density is 39%, and temperature is 27 ℃, ore pulp PH=8.2, the floating agent addition adds by medicament and the mass ratio of roughly selecting the selected foam of the third level of the direct flotation that adds at every turn, the adjusting agent consumption is 1200g/t, and the inhibitor consumption is 730g/t, collector dosage 280g/t.
Table 5 flow process mineral processing index
It should be noted that finally: obviously, above-described embodiment is only for example of the present invention clearly is described, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all embodiments exhaustive.And the apparent variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (6)
1. the beneficiation method of a Bayan Obo mine tailing flotation iron ore concentrate, is characterized in that, completes according to the following steps:
(1) pre-classification ore grinding: the Bayan Obo mine tailing is carried out classification process, coarse grain ore and smitham are separated, the ball mill fine grinding of coarse grain ore in sand form, return to grader after mill, the smitham that obtains, as next step bulk flotation raw material, requires the smitham granularity to account for more than 95% of gross weight for-200 orders (0.074mm);
(2) bulk flotation: join in rougher cell after the Bayan Obo mine tailing smitham that obtains after classification is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select; Roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell;
To roughly select froth pulp and join in first order cleaner cell, adjust pulp density, and stir, and add successively inhibitor and collecting agent, carry out the first order selected; The selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order;
Ore pulp returns and is added in initial separatory cell in first order cleaner cell, and the selected froth pulp of the first order joins in the cleaner cell of the second level, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the second level selected; The selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level;
In the cleaner cell of the second level, ore pulp returns and is added in first order cleaner cell, and the selected froth pulp in the second level is easily floating mineral;
Join in first order scavenger flotation cell roughly selecting ore pulp in the initial separatory cell that obtains, adjust pulp density, stir, and add successively inhibitor and collecting agent, carry out the first order and scan; The first order is scanned and is obtained the first order and scan ore pulp in froth pulp and first order scavenger flotation cell;
The first order is scanned froth pulp and is returned and be added in rougher cell, and ore pulp in first order scavenger flotation cell is joined in the scavenger flotation cell of the second level, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the second level and scans; The second level is scanned to such an extent that scan ore pulp in froth pulp and second level scavenger flotation cell to the second level;
The second level is scanned froth pulp and is returned and be added in first order scavenger flotation cell, and in the scavenger flotation cell of the second level, ore pulp is as the raw material of next step Iron Ore Flotation stone;
In bulk flotation, the condition of at every turn adjusting pulp density is: the ore pulp mass concentration is 30～60%, and slurry temperature is 25～45 ℃, and the pH of ore pulp is 8～10;
The floating agent addition adds by medicament and the mass ratio of roughly selecting the ore pulp that adds at every turn, roughly selects: adjusting agent 600～800g/t, inhibitor 800～1200g/t, collecting agent 1000～1400g/t; Each selected and scan: adjusting agent 400～800g/t, inhibitor 600～1200g/t, collecting agent 700～1400g/t;
(3) direct flotation: join in the direct flotation rougher cell after in the second level scavenger flotation cell of bulk flotation, ore pulp is sized mixing, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select; Roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell, in initial separatory cell, ore pulp is thrown tail;
To roughly select froth pulp and join in first order cleaner cell, adjust pulp density, and stir, and add successively inhibitor and collecting agent, carry out the first order selected; The selected selected froth pulp of the first order and the interior ore pulp of first order cleaner cell of obtaining of the first order;
Ore pulp returns and is added in initial separatory cell in first order cleaner cell, and the selected froth pulp of the first order joins in the cleaner cell of the second level, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the second level selected; The selected selected froth pulp in the second level and the interior ore pulp of second level cleaner cell of obtaining in the second level;
Ore pulp returns and is added in first order cleaner cell in the cleaner cell of the second level, and the selected froth pulp in the second level joins in third level cleaner cell, adjusts pulp density, stirs, and adds successively inhibitor and collecting agent, carries out the third level selected; The selected selected froth pulp of the third level and the interior ore pulp of third level cleaner cell of obtaining of the third level;
In third level cleaner cell, ore pulp returns and is added in the cleaner cell of the second level, and the selected froth pulp of the third level enters anti-floating iron ore operation;
In direct flotation, the condition of at every turn adjusting pulp density is: the ore pulp mass concentration is 30～60%, and slurry temperature is 25～45 ℃, and the pH of ore pulp is 4～6;
The floating agent addition adds by medicament and the mass ratio of roughly selecting the bulk flotation mine tailing that adds at every turn, roughly select: adjusting agent 800～1000g/t, collecting agent 1100～1400g/t, at every turn selected: adjusting agent 500～1000g/t, inhibitors 4 00～800g/t, collecting agent 600～1200g/t;
(4) reverse flotation:, take the selected froth pulp of the third level of direct flotation as raw material, join after sizing mixing in the reverse flotation rougher cell, stir, add successively adjusting agent, inhibitor and collecting agent, roughly select; Roughly select and obtain roughly selecting ore pulp in froth pulp and initial separatory cell; Roughly selecting froth pulp is mine tailing A, and in initial separatory cell, ore pulp is final iron extract mine producation;
In reverse flotation, the flotation pulp mass concentration is 30～60%, and slurry temperature is 25～45 ℃, and the pH of ore pulp is 8～10; The floating agent addition adds by medicament and the mass ratio of roughly selecting the selected foam of the third level that adds direct flotation at every turn, roughly selects: adjusting agent 1200～1400g/t, inhibitor 600～1000g/t, collecting agent 200～400g/t.
2. the beneficiation method of a kind of Bayan Obo mine tailing flotation iron ore concentrate according to claim 1, it is characterized in that: described raw material is the Bayan Obo mine tailing, comprises that baiyuneboite selects iron or selects the mine tailing of rare earth.
3. the beneficiation method of a kind of Bayan Obo mine tailing flotation iron ore concentrate according to claim 1 is characterized in that: described classification, its equipment that adopts are a kind of in spiral classifier, hydrocyclone.
4. the beneficiation method of a kind of Bayan Obo mine tailing flotation iron ore concentrate according to claim 1, it is characterized in that: the adjusting agent of described bulk flotation is sodium carbonate; Inhibitor is sodium metasilicate; Collecting agent is a kind of in oleic acid or stearic acid.
5. the beneficiation method of a kind of Bayan Obo mine tailing flotation iron ore concentrate according to claim 1, it is characterized in that: the adjusting agent of described direct flotation is sulfuric acid; Inhibitor is 12 hydrazine aluminum sulfate potassium; Collecting agent is a kind of in oxidized paraffin wax soap or fatty acid sulfonate.
6. the beneficiation method of a kind of Bayan Obo mine tailing flotation iron ore concentrate according to claim 1, it is characterized in that: the adjusting agent of described reverse flotation is sodium carbonate; Inhibitor is a kind of in dextrin or cornstarch; Collecting agent is a kind of in oleic acid or stearic acid.
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| CN114074029A (en) * | 2020-08-18 | 2022-02-22 | 包头稀土研究院 | Beneficiation method of high-grade mixed rare earth concentrate |
| CN114074029B (en) * | 2020-08-18 | 2024-03-12 | 包头稀土研究院 | Beneficiation method for high-grade mixed rare earth concentrate |
| CN114643132A (en) * | 2022-03-16 | 2022-06-21 | 包头钢铁（集团）有限责任公司 | Use method of iron ore concentrate flotation reagent |
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