CN102600982A - Fluoride-free low-acid zwitterion quartz sand reverse flotation process - Google Patents
Fluoride-free low-acid zwitterion quartz sand reverse flotation process Download PDFInfo
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Abstract
The invention relates to fluoride-free low-acid zwitterion quartz sand reverse flotation process, which is characterized by comprising following steps: (1) pretreatment; (2) flotation: adjusting the pH (potential of hydrogen) value of ore pulp to 4-5 by sulfuric acid, performing air agitation, adding 40g/t-80g/t of positive ion collecting agent and 60g/t-75g/t of foaming agent, stirring and removing foams in primary flotation; and adjusting the pH value of the ore pulp to 9-10 by 200g/t-300g/t of sodium carbonate, performing air agitation, adding 80g/t-150g/t of negative ion collecting agent, then adding 60g/t-75g/t of foaming agent, stirring and removing foams in secondary floatation; and (3) washing ores in a flotation tank by water until the ores are neutral, and drying the ores to obtain quartz sand concentrates. The flotation collecting agents are fine in selectivity, the process is simple, cost is low, the purity of the quartz sand is high, the content of iron and aluminum impurities is low, and the problem that traditional fluoride and high-acid process damages equipment and environments is avoided in a flotation process.
Description
Technical field
The invention belongs to the nonmetallic mineral manufacture field, particularly a kind of free-floride is hanged down sour zwitterion reverse flotation quartz sand technology, reduces in the quartz sand to contain elemental iron aluminum metal impure mineral the method for the refining quartz sand of preparation.
Background technology
Along with the solid demand of global strategy property low-carbon energy-saving technology, be that the new forms of energy of representative, the research and development of new material press for high purity quartz as basic material with solar energy.High purity quartz is a kind of purposes functional material very widely, and the high-purity and even ultra-pure quartz of high-tech sector extensive use such as solar energy crystal silicon battery, silica crucible, surface-mounted integrated circuit, electronic package material, optical fiber, LCD, laser, silicon ingot, silicon rod, silicon chip, monocrystalline silicon, polysilicon, Aero-Space (looking screen window, rocket shower nozzle etc.), defence and military (guided missile head, laser weapon, high altitude reconnaissance plane optical glass etc.), nuclear power energy store glass (radiation proof), high temp glass, chemical industry are as irreplaceable key function property material.Yet high purity quartz not only is limited by quartzy ore dressing deep process technology, and also closely related with the difference of quartzy mineral mineral crystal structure.
Quartz sand is a kind of silicate mineral of hard, wear-resisting, stable chemical performance, and its essential mineral composition is SiO
2Range of application is very wide, can be used for generally that frit, ceramic auxiliary material, metallurgy additive, electrical apparatus insulation filler, abrasive media, coating additive, building mortar, concrete close that material, machine casting, Treatment of Metal Surface, profit filter, fields such as oil well pressurization and medical treatment.Glass sand is the indispensable raw material of high-tech industries such as electronics core devices, optical communications material, solar energy crystal silicon battery, optical glass, high temp glass, laser, military project especially.
Natural siliceous sand contains some other impure minerals, and the impure mineral that wherein contains ferro element has: goethite, bloodstone, limonite, ilmenite, magnetic iron ore, tourmaline, hornblend, biotite etc.These ferrous contaminants or be embedded in the quartz particles, or invest quartz surfaces.Because the existence of metallic impurity elements such as these iron content aluminium has influenced the industrial quality and the use value of quartz sand.For example in glass production, macroscopic property and the light transmission and the outward appearance of glass finished product of founding in the process of glass all produced material impact.Therefore, improve the grade of quartz sand, the content that reduces metallic impurity elements such as iron, aluminium just seems extremely important.In the quartz sand commercial production, traditional production process is with the fragmentation of vein quartz rock, washing desliming, ore grinding, classification, magnetic separation, flotation, roasting, shrend, selected one-tenth glass sand.Particularly normal employing of flotation has fluorine strong acid technology, and fluorine ion and strong acid not only produce corrosion to equipment, and industrial wastewater all brings problem to the pollution and the improvement of environment.Therefore, to the abundant vein quartz resource of reserves, studying the low sour zwitterion reverse flotation of a kind of free-floride, to prepare the new technology meaning of high purity quartz very great.
Conventional quartz sand flotation generally has hydrofluoric acid method and sulfuric acid process.Activator and pH adjustment agent used in the hydrofluoric acid method are hydrofluoric acid, though selectivity is good, the fluoride treatment in later stage and secondary pollution problem are difficult to resolve determines; Sulfuric acid process floatation process great advantage is to have avoided using the fluorine ion that environment is had destructive effects, and production target is stable, but strong acid also can not be ignored preparation equipment and corrosiveness, and floatation equipment is had higher requirements.Floride-free no acid system is under natural pH value; Carry out flotation through the zwitterion collecting agent; Realized green production, but owing to control the purpose that just can reach separating mineral under the pretreated situation in strictness, if preliminary treatment control is bad; The floatation indicators fluctuation is very big, and bad, the problems such as dosing is big, production cost height of sorting of existing floride-free anacidity floatation existence.
Summary of the invention
Technical problem to be solved by this invention is the deficiency to above-mentioned prior art, provides a kind of technology simple, and dosing is few; Production cost is low; Eco-friendly free-floride is hanged down sour zwitterion reverse flotation quartz sand technology, can remove the metal impurities mineral of iron content, aluminium, the preparation high purity quartz.
For solving technical problem proposed by the invention, the technical scheme that the present invention adopts is:
A kind of free-floride is hanged down sour zwitterion reverse flotation quartz sand technology, it is characterized in that it may further comprise the steps: (1) preliminary treatment: quartz sand is carried out ore grinding and screening, be prepared into 60 ~ 140 order quartz sands, clean then and magnetic separation, oven dry; (2) flotation: it is 20 ~ 24wt% that water is adjusted to pulp density with pretreated quartz sand; Adopt two sections pretreated quartz sands of reverse floatation process flotation of zwitterion; In one section flotation, with the sulfuric acid of 100g/t ~ 200g/t with slurry pH be adjusted to 4 ~ 5 and inflation stir, add 40g/t ~ 80g/t cation-collecting agent and (representing to add in the pretreated quartz sand per ton 40g ~ 80g cation-collecting agent) stirred in inflation; The foaming agent that adds 60g/t ~ 75g/t again stirs and scrapes bubble; In the bis flotation, with the sodium carbonate of the 200g/t ~ 300g/t ore pulp after with one section flotation regulate pH value be 9 ~ 10 and inflation stir, add 80g/t ~ 150g/t anion collecting agent and inflation stirring, add the foaming agent of 60g/t ~ 75g/t again, stir and scrape bubble; (3) water cleans the interior mineral of flotation cell to neutral, and the suction filtration oven dry obtains the quartz sand concentrate.
Press such scheme, described quartz sand is the rough machined quartz sand of vein quartz rock, and wherein the content of silica is more than or equal to 95.0wt%, the content of metallic impurity elements iron less than the content of 100 μ g/g, impurity element aluminium less than 50 μ g/g.
Press such scheme; Described cation-collecting agent is the trimethylene diamines; The trimethylene diamines is a N-dodecyl-1; 3-trimethylene diamines (being dodecyl trimethylene diamines) or N-myristyl-1,3-trimethylene diamines (being myristyl trimethylene diamines) or N-octadecyl-1, a kind of in the 3-trimethylene diamines (being octadecyl trimethylene diamines).
Press such scheme, described anion collecting agent is a combined capturing and collecting agent, is that petroleum sodium sulfonate and the octyl group hydroximic acid of 4:1 formed by mass ratio.
Press such scheme, described foaming agent is a terpenic oil.
Press such scheme; The operating process of described ore grinding is: according to the mass ratio 1 of quartz sand and ball-milling medium: (2-5); In each rotating cylinder of shape star formula ball mill, add quartz sand material and ball-milling medium, rotating speed is 1380r/mim, ore grinding time 4s ~ 10s; Grinding process is for dry grinding, in order to the dissociating impurities mineral.
Press such scheme, the high frequency sieve that shakes is adopted in described screening, double deck screen, and screen size is 60 orders, 140 orders, the method for screening is a wet screening.
Press such scheme, described scouring is that water is cleaned quartz sand pan feeding concentration adjustment to 40 ~ 60wt%, cleans time 3min ~ 6min, friction and cleaned quartz surface.
Press such scheme, described magnetic separation is a high-gradient magnetic separation, and magnetic field intensity is 0.6 ~ 0.9T, and flow velocity is 0.6 ~ 1.0m/s.
Press such scheme, described water is deionized water.
Press such scheme, described oven dry is electrical heating infra-red radiation oven dry under the condition of 80 ℃ ~ 105 ℃ of temperature.
Compare with traditional floatation process; The invention has the beneficial effects as follows: the first, used quartz sand raw material is the higher quartz sand of purity that the vein quartz rock is prepared into through operations such as pick, fragmentation, ore grinding, classification, deironing in the flotation of the present invention, when formulating flotation process, mainly considers to remove the metal impurities mineral of iron content, aluminium; The dosage of used collecting agent is little; Normal temperature produce and also production cost low, process treatment process is simple, quartz sand purity height, iron, aluminium content are low; Second; Utilize the collecting property difference and the interaction mechanism of zwitterion; Adopted anion collecting agent octyl group hydroximic acid and petroleum sodium sulfonate as the combined capturing and collecting agent technology; And be aided with two sections zwitterion inverse flotation methods that cation-collecting agent trimethylene diamines is a supplementary catching agent, realize the purpose of selectivity collecting; The 3rd, ore pulp acidity is faintly acid, and a spot of sulfuric acid alleviates the corrosion to preparation equipment; The 4th, do not introduce the F ion in the floatation process, avoided having fluorine strong acid flotation waste water to handle the environmental issue of bringing, production environment is friendly.Therefore, the present invention realizes that environmental benefit, social benefit and economic benefit three are unified, is a kind of resources conservation, environmentally friendly new technology.
The specific embodiment
In order to understand the present invention better, the specific embodiment of the invention is described in detail, but is not limited to the listed specific embodiment.
Foaming agent terpenic oil, cation-collecting agent trimethylene diamines, anion collecting agent petroleum sodium sulfonate and octyl group hydroximic acid are commercially available technical grade commodity among the following embodiment.
Adopting the rough machined quartz sand of vein quartz rock among the following embodiment is raw material, and wherein the content of silica is more than or equal to 95.0wt%, and major impurity is bloodstone, feldspar and mica, and the content of impurity element iron, aluminium is respectively less than 100 μ g/g, 50 μ g/g; The high frequency sieve that shakes is adopted in described screening, double deck screen, and screen size is 60 orders, 140 orders, the method for screening is a wet screening; Described magnetic plant is a slon-100 periodic pulsating high gradient magnetic separator; Drying plant is a SC101-Y type far infrared air dry oven; Adopt Optima 4300DV to compose direct-reading inductively coupled plasma emission spectrometer full the quartz sand chemical element content is carried out quantitative analysis.
Embodiment 1:
With the rough machined quartz sand of vein quartz rock is raw material; Crush and screen and be prepared into 60 ~ 140 order quartz sands; Water is that 0.9T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 1.0m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 6min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; With clear water pretreated quartz sand ore pulp concentration adjustment is arrived 24wt%; In one section flotation, with the adjustment agent sulfuric acid of 200g/t with ore pulp be adjusted to the pH value be adjusted to equal 5 and inflation stir 3min, add the inflation of 80g/t cation-collecting agent dodecyl trimethylene diamines and stir 3min; The foaming agent terpenic oil that adds 75g/t again stirs 3min, scrapes bubble 4min; In the bis flotation; With the adjustment agent sodium carbonate of the 300g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 3min; Add 150g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 3min is stirred in inflation; The foaming agent terpenic oil that adds 75g/t again stirs 3min, scrapes bubble 4min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain SiO
2Content 99.01%, impurity metallic elements total amount are the quartz sand concentrate of 99.01 μ g/g, and wherein element of Fe and Al are respectively 14.85 μ g/g and 28.67 μ g/g.With compare metallic element total impurities 215.07 μ g/g in the quartz sand before the flotation, the impurity metallic elements total amount rate of removing is 53.15%, the rate of removing of element of Fe and Al is respectively 84.15% and 37.50%.
Embodiment 2:
With the rough machined quartz sand of vein quartz rock is raw material, crushes and screens to be prepared into 60 ~ 140 order quartz sands, and water is that 0.9T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 1.0m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 6min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; Use clear water that pretreated quartz sand ore pulp concentration adjustment is arrived and be 24wt%; In one section flotation, with the sulfuric acid of 100g/t with slurry pH be adjusted to 5 and inflation stir 5min, add the inflation of 40g/t cation-collecting agent trimethylene diamines and stir 5min; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; In the bis flotation; With the adjustment agent sodium carbonate of the 200g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 5min; Add 80g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 5min is stirred in inflation; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain the quartz sand concentrate.The metallic element content of impurities of gained quartz sand concentrate is respectively 154.19 μ g/g, and wherein element of Fe content is 33.96 μ g/g, and element al is 35.80 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 39.86%; The rate of removing of element of Fe is 63.75%; The rate of removing of element al is 21.95%.
Embodiment 3:
With the rough machined quartz sand of vein quartz rock is raw material; Crush and screen and be prepared into the quartzy Grains of 60 ~ 140 orders; Water is that 0.9T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 1.0m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 6min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; With clear water pretreated quartz sand ore pulp concentration adjustment is arrived 24wt%; In one section flotation, with the adjustment agent sulfuric acid of 200g/t with slurry pH be adjusted to 5 and inflation stir 5min, add the inflation of 40g/t cation-collecting agent dodecyl trimethylene diamines and stir 5min; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; In the bis flotation; With the adjustment agent sodium carbonate of the 300g/t slurry pH after with one section flotation be adjusted to 10 and inflation stir 5min; Add 100g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 5min is stirred in inflation; The terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain the quartz sand concentrate.The metallic element content of impurities of gained quartz sand concentrate is respectively 142.66 μ g/g, and wherein element of Fe content is 23.99 μ g/g, and element al is 38.88 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 33.67%; The rate of removing of element of Fe is 74.39%; The rate of removing of element al is 15.24%.
Embodiment 4:
With the rough machined quartz sand of vein quartz rock is raw material, crushes and screens to be prepared into 60 ~ 140 order quartz sands, and water is that 0.9T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 1.0m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 6min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; With clear water pretreated quartz sand ore pulp concentration adjustment is arrived 24wt%; In one section flotation, with the adjustment agent sulfuric acid of 200g/t with slurry pH be adjusted to 4 and inflation stir 3min, add 60g/t cation-collecting agent dodecyl trimethylene diamines and stir 3min; The foaming agent terpenic oil that adds 75g/t again stirs 3min, scrapes bubble 4min; In the bis flotation; With the adjustment agent sodium carbonate of the 300g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 3min; Add 100g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 3min is stirred in inflation; The terpenic oil that adds 75g/t again stirs 3min, scrapes bubble 4min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain the quartz sand concentrate.In the gained quartz sand concentrate, the metallic element content of impurities is respectively 129.35 μ g/g, and wherein element of Fe content is 19.19 μ g/g, and element al is 36.62 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 28.31%; The rate of removing of element of Fe is 79.42%; The rate of removing of element al is 20.17%.
Embodiment 5:
With the rough machined quartz sand of vein quartz rock is raw material, crushes and screens to be prepared into 60 ~ 140 order quartz sands, and water is that 0.9T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 1.0m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 6min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; With clear water pretreated quartz sand ore pulp concentration adjustment is arrived 24wt%; In one section flotation, with the adjustment agent sulfuric acid of 200g/t with slurry pH be adjusted to 5 and inflation stir 3min, add the inflation of 80g/t cation-collecting agent dodecyl trimethylene diamines and stir 3min; The foaming agent terpenic oil that adds 75g/t again stirs 3min, scrapes bubble 4min; In the bis flotation; With the adjustment agent sodium carbonate of the 300g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 3min; Add 120g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 3min is stirred in inflation; The foaming agent terpenic oil that adds 75g/t again stirs 3min, scrapes bubble 4min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain the quartz sand concentrate.In the gained quartz sand concentrate, the metallic element content of impurities is respectively 125.87 μ g/g, and wherein element of Fe content is 15.79 μ g/g, and element al is 37.28 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 41.47%; The rate of removing of element of Fe is 83.15%; The rate of removing of element al is 18.73%.
Embodiment 6:
With the rough machined quartz sand of vein quartz rock is raw material, crushes and screens to be prepared into 60 ~ 140 order quartz sands, and water is that 0.6T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 0.6m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 3min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; With clear water pretreated quartz sand ore pulp concentration adjustment is arrived 20wt%; In one section flotation, with the adjustment agent sulfuric acid of 100g/t with slurry pH be adjusted to 5 and inflation stir 5min, add the inflation of 40g/t cation-collecting agent octadecyl trimethylene diamines and stir 5min; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; In the bis flotation; With the adjustment agent sodium carbonate of the 200g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 5min; Add 80g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 5min is stirred in inflation; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain the quartz sand concentrate.In the gained quartz sand concentrate, the metallic element content of impurities is respectively 198.79 μ g/g, and wherein element of Fe content is 71.62 μ g/g, and element al is 39.36 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 7.84%; The rate of removing of element of Fe is 23.56%; The rate of removing of element al is 14.19%.
Embodiment 7:
With the rough machined quartz sand of vein quartz rock is raw material, crushes and screens to be prepared into 60 ~ 140 order quartz sands, and water is that 0.6T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 0.6m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 3min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; With clear water pretreated quartz sand ore pulp concentration adjustment is arrived 20wt%; In one section flotation, slurry pH is adjusted to 5 and stir 5min, adds the inflation of 40g/t cation-collecting agent octadecyl trimethylene diamines and stir 5min with the adjustment agent sulfuric acid of 100g/t; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; In the bis flotation; With the adjustment agent sodium carbonate of the 200g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 5min; Add 80g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 5min is stirred in inflation; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain the quartz sand concentrate.In the gained quartz sand concentrate, the metallic element content of impurities is respectively 188.28 μ g/g, and wherein element of Fe content is 68.76 μ g/g, and element al is 39.32 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 12.46%; The rate of removing of element of Fe is 26.61%; The rate of removing of element al is 14.28%.
Embodiment 8:
With the rough machined quartz sand of vein quartz rock is raw material, crushes and screens to be prepared into 60 ~ 140 order quartz sands, and water is that 0.8T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 0.8m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 4min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; Use clear water that pretreated quartz sand ore pulp concentration adjustment is arrived and be 20wt%; In one section flotation, with the adjustment agent sulfuric acid of 100g/t with slurry pH be adjusted to 5 and inflation stir 5min, add the inflation of 40g/t cation-collecting agent myristyl trimethylene diamines and stir 5min; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; In the bis flotation; With the adjustment agent sodium carbonate of the 200g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 5min; Add 80g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 5min is stirred in inflation; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, electrical heating infra-red radiation are dried; Obtain the quartz sand concentrate.In the gained quartz sand concentrate, the metallic element content of impurities is respectively 182.07 μ g/g, and wherein element of Fe content is 61.89 μ g/g, and element al is 38.96 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 15.34%; The rate of removing of element of Fe is 33.94%; The rate of removing of element al is 15.06%.
Embodiment 9:
With the rough machined quartz sand of vein quartz rock is raw material, crushes and screens to be prepared into 60 ~ 140 order quartz sands, and water is that 0.9T, flow velocity are that iron removal by magnetic separation carries out preliminary treatment under the 1.0m/s condition in magnetic field intensity after quartz sand pan feeding concentration adjustment is cleaned 4min to 60wt%; Adopt the pretreated quartz sand of two sections zwitterion reverse floatation process flotation; Use clear water that pretreated quartz sand ore pulp concentration adjustment is arrived and be 20wt%; In one section flotation, slurry pH is adjusted to 5 and stir 5min, adds the inflation of 40g/t cation-collecting agent myristyl trimethylene diamines and stir 5min with the adjustment agent sulfuric acid of 100g/t; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; In the bis flotation; With the adjustment agent sodium carbonate of the 200g/t slurry pH after with one section flotation be adjusted to 9 and inflation stir 5min; Add 80g/t anion collecting agent, i.e. petroleum sodium sulfonate: octyl group hydroximic acid mass ratio is the combined capturing and collecting agent of 4:1, and 5min is stirred in inflation; The foaming agent terpenic oil that adds 60g/t again stirs 5min, scrapes bubble 5min; Mineral are to neutral in the washed with de-ionized water flotation cell, and suction filtration, the oven dry of electrical heating infra-red radiation obtain the quartz sand concentrate.In the gained quartz sand concentrate, the metallic element content of impurities is respectively 175.19 μ g/g, and wherein element of Fe content is 59.99 μ g/g, and element al is 38.89 μ g/g.Compare with selected former state, the metallic element content of impurities rate of removing is 18.54%; The rate of removing of element of Fe is 35.97%; The rate of removing of element al is 15.22%.
Each raw material that the present invention is cited, and the bound of each raw material of the present invention, interval value, and the bound of technological parameter (like temperature, time etc.), interval value can both realize the present invention, do not enumerate embodiment one by one at this.
Claims (10)
1. the low sour zwitterion reverse flotation quartz sand technology of free-floride is characterized in that it may further comprise the steps: (1) preliminary treatment: quartz sand is carried out ore grinding and screening, be prepared into 60 ~ 140 order quartz sands, clean then and magnetic separation; (2) flotation: water is with pretreated quartz sand ore pulp concentration adjustment to 20 ~ 24wt%; Adopt two sections pretreated quartz sands of reverse floatation process flotation; In one section flotation, with the sulfuric acid of 100g/t ~ 200g/t with slurry pH be adjusted to 4 ~ 5 and inflation stir, add 40g/t ~ 80g/t cation-collecting agent and inflation is stirred; The foaming agent that adds 60g/t ~ 75g/t again stirs and scrapes bubble; In the bis flotation, with the sodium carbonate of the 200g/t ~ 300g/t slurry pH after with one section flotation be adjusted to 9 ~ 10 and inflation stir, add 80g/t ~ 150g/t anion collecting agent and inflation is stirred, add the foaming agent of 60g/t ~ 75g/t again, stir and scrape bubble; (3) water cleans the interior mineral of flotation cell to neutral, and the suction filtration oven dry obtains the quartz sand concentrate.
2. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology; It is characterized in that; Described quartz sand is the rough machined quartz sand of vein quartz rock; Wherein the content of silica is more than or equal to 95.0wt%, the content of metallic impurity elements iron less than the content of 100 μ g/g, impurity element aluminium less than 50 μ g/g.
3. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology; It is characterized in that; Described cation-collecting agent is the trimethylene diamines, and the trimethylene diamines is a N-dodecyl-1,3-trimethylene diamines or N-myristyl-1; 3-trimethylene diamines or N-octadecyl-1, a kind of in the 3-trimethylene diamines.
4. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology, it is characterized in that described anion collecting agent is a combined capturing and collecting agent, is that petroleum sodium sulfonate and the octyl group hydroximic acid of 4:1 formed by mass ratio.
5. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology, it is characterized in that described foaming agent is a terpenic oil.
6. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology; It is characterized in that the operating process of described ore grinding is: according to the mass ratio 1 of quartz sand and ball-milling medium: (2-5), in each rotating cylinder of shape star formula ball mill, add quartz sand material and ball-milling medium; Rotating speed is 1380r/mim; Ore grinding time 4s ~ 10s, grinding process is for dry grinding, in order to the dissociating impurities mineral.
7. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology, it is characterized in that, the high frequency sieve that shakes is adopted in described screening, double deck screen, and screen size is 60 orders, 140 orders, the method for screening is a wet screening.
8. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology; It is characterized in that; Described scouring is that water is cleaned quartz sand pan feeding concentration adjustment to 40 ~ 60wt%, cleans time 3min ~ 6min, friction and cleaned quartz surface; Described magnetic separation is a high-gradient magnetic separation, and magnetic field intensity is 0.6 ~ 0.9T, and flow velocity is 0.6 ~ 1.0m/s.
9. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology, it is characterized in that described water is deionized water.
10. a kind of free-floride according to claim 1 is hanged down sour zwitterion reverse flotation quartz sand technology, it is characterized in that, described oven dry is electrical heating infra-red radiation oven dry under the condition of 80 ℃ ~ 105 ℃ of temperature.
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| CN114887772A (en) * | 2022-05-23 | 2022-08-12 | 连云港福东正佑照明电器有限公司 | Quartz sand flotation method and device |
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