CN102240604B - Method for using collecting agent prepared from drainage oil for flotation and defluorination of iron ores - Google Patents

Method for using collecting agent prepared from drainage oil for flotation and defluorination of iron ores Download PDF

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CN102240604B
CN102240604B CN 201010169973 CN201010169973A CN102240604B CN 102240604 B CN102240604 B CN 102240604B CN 201010169973 CN201010169973 CN 201010169973 CN 201010169973 A CN201010169973 A CN 201010169973A CN 102240604 B CN102240604 B CN 102240604B
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collecting agent
flotation
waste oil
add
iron ore
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CN102240604A (en
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王化军
马鸿志
于慧梅
刘旭
葛鹏
仵晓丹
何秋慧
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Beijing Junzhiqing Science And Technology Co ltd
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BEIJING JUNZHIQING SCIENCE AND TECHNOLOGY Co Ltd
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Abstract

The invention relates to a method for using a collecting agent prepared from drainage oil for the flotation and the defluorination of iron ores, wherein a preparation process of the collecting agent comprises the following steps of: (a) purifying the drainage oil; and (b) carrying out hydrolysis reaction on the purified drainage oil obtained from the step (a) to obtain the collecting agent used for floating ores. When the collecting agent used by the invention and prepared from the drainage oil is used for the defluorination of floated iron ores, the selectivity of the collecting agent can be enhanced, and the technical indicator and the economic indicator of the flotation are enhanced favorably; and in addition, because a raw material used for the preparation of the collecting agent is the drainage oil, the technical scheme provided by the invention has important significance on the aspects of preventing environmental pollution, simplifying production process, reducing food security threat, and the like.

Description

The collecting agent of waste oil preparation is used for the method for iron ore flotation defluorinate
Technical field
The invention belongs to the collecting agent field of flotation of ores, particularly relate to the method that a kind of collecting agent with the waste oil preparation is used for the iron ore flotation defluorinate.
Background technology
Fatty acid compound has important application as collecting agent in the flotation of mineral, fatty-acid collector commonly used comprises higher fatty acids and sodium salt thereof, for example: oleic acid, enuatrol, and the product that contains multiple fatty acid composition that from animals and plants and PETROLEUM PROCESSING byproduct, papermaking wastewater, extract, such as animal, plant fatty acid (soap), aphthenic acids (soap), oxidized paraffin wax (soap), tall oil (soap) and purified product thereof.
Because aliphatic acid has very active carboxyl functional group, so can carry out flotation to a lot of mineral.Fatty acid compound is widely used in the flotation of mineral for a long time as the anion collecting agent.But the mineral of its flotation mainly contain: 1. alkaline-earth metal salt mineral, such as scheelite, fluorite, iron ore, barite etc.; 2. metal oxide-type mineral are such as bloodstone, pyrolusite, cassiterite, wolframite, ilmenite etc.; 3. transition metal oxyacid salt mineral are such as malachite, chessy copper, smithsonite etc.; 4. silicate mineral is such as beryl, spodumene, zircon, andradite, tourmaline etc.
Fatty acid collecting agent is mainly synthetic by chemical method, China just is used for oxide ore flotation with soybean oil, camphor seed oil, achene of Siberian cocklebur wet goods vegetable oil raw materials through processing the synthetic fatty acid collecting agent in research as far back as five sixties of twentieth century, because there is lack of raw materials for it, research uses the tal fibre wet goods as the collecting agent of oxide ore flotation then.Tall oil is the byproduct that obtains in the alkali paper-making process take timber as raw material, only has pine alkali paper-making factory that production is just arranged.Owing to be subject to the impact that country limits disafforestation and closes little paper mill policy, the raw material sources of tall oil are relatively more nervous.And the paper mill is for number one, turns to gradually to produce refining tall oil and wait the industrial chemicals sale as making lacquer, and this has all limited the tal fibre oil supplying.The seventies and eighties, many to microorganism petro-jelly fermentation synthetic fatty acid research and comparison.After the nineties, advance by leaps and bounds about the research and development of fatty-acid collector, various aliphatic acid arise at the historic moment under the condition of different compound, modifications.Some scholar has carried out the research with raw material synthetic fatty acid collecting agents such as oil foot or petroleum by-products.
But present fatty acid collecting agent shortcoming also clearly, mainly is the poor selectivity to mineral, and reagent consumption is large; The solubility of medicament is low, in water, disperse bad, the collecting poor performance, the actual use needs emulsification often; Not anti-hard water; Flotation effect was bad when temperature was low, so that the flotation of need to heating; Need simultaneously to select gangue mineral inhibitor etc. during application.
Because the present employed normal fat acids of ore dressing collecting agent is poor selectivity at normal temperatures, wanting to obtain preferably effect has to ore pulp is heated to and carries out flotation more than 30 ℃, need to set up the device to warming up pulp, so just produce the very high expense of heating, increase the flotation cost.
Patent CN1031490A discloses a kind of collecting agent that utilizes the flotation oxide ore that waste material that refined plant when oil abandon makes for raw material, the employed raw material of the preparation of this collecting agent is the waste material of refined plant oil, the composition structure of aliphatic acid is not ideal enough in the raw material, and the flotation temperature of flotation mineral is higher.
Patent CN1097152A discloses a kind of flotation effect that synergist promotes fatty-acid collector of using, and still uses the cost that synergist can increase collecting agent.
Patent CN1343531A discloses a kind of preparation method of floatation catcher of iron ore, this patent disclosure be that croude fatty acids or fatty acid mixed are the collecting agent of base stock preparation, because the restriction of raw material, the kind of aliphatic acid formation is unreasonable in its product, and is not ideal enough on performance.
We know that the harm of waste oil is very large, are present class municipal refuses in the urgent need to address, and utilization of the present invention oil and fat preparation has wherein become collecting agent.The key technical problem that the present invention solves is to utilize the collecting agent of waste oil preparation for the flotation defluorination process of iron ore, play and reduce the double effects that pollutes and fully utilize, and promoting bargh to reduce beneficiation cost, the collecting agent of the present invention's preparation can obtain good index during to iron ore flotation at normal temperatures.
Through consulting amount of literature data, the fatty acid mixed of preparation is not also studied report at present as collecting agent take waste oil as raw material.The collecting agent that the present invention prepares take waste oil as raw material is functional, the existing a lot of defectives of fatty acid mixed collecting agent of the prior art have been overcome, can substitute existing fatty acid collecting agent, and application of the present invention can take full advantage of the waste oil of threatening environment and food security, realized the comprehensive regulation to environment.
Summary of the invention
The collecting agent that the invention provides a kind of preparation take waste oil as raw material is used for the method for iron ore flotation defluorinate, the method comprises that the collecting agent of the preparation take waste oil as raw material is used for the step of iron ore flotation defluorinate, and wherein collecting agent prepares by the hydrolysis of waste oil.
Preferably, the preparation of collecting agent comprises the steps:
(a) waste oil is carried out purification;
The reaction that is hydrolyzed of the waste oil of the purification that (b) a step is obtained namely obtains the collecting agent for the flotation mineral.
In the said method, selective hydrolysis is macromolecule alkali for hydrolysis, and preferable reaction temperature is 50-90 ℃, and the reaction time is preferably 30-90 minute.
In the said method, basic hydrolysis is preferably NaOH or potassium hydroxide hydrolysis.The consumption of alkali is preferably the 1-5% of waste oil quality.
Preferably, the preparation of collecting agent comprises the steps:
The waste oil of purification is carried out basic hydrolysis, and reaction temperature is 50-90 ℃, and the reaction time is 30-90 minute, after hydrolysis finishes, with resulting hydrolysate cooling, uses the organic extract liquid extraction, and it is unsaponifiable matter at the middle and upper levels, and lower floor is saponified; Take off a certain amount of acid solution of saponified adding of layer, so that the mass ratio of fatty acid mixed and mixing-in fat hydrochlorate is 1: 0.1-10.
That abandon when waste oil generally refers to the processed food such as hotel, restaurant, factory, family and discarded edible oil and fat discharging, be commonly called as hogwash fat, swill oil, also comprise the oil slick that enters in sewer, the cesspool, or repeatedly fry in shallow oil, exploded the grease (old oil) etc. of food.
In the said method, preferred purifying step comprises centrifugal removal suspension, adds certain water and removes the colloidality material, drying and dehydrating, carclazyte decolouring;
In the said method, basic hydrolysis is preferably NaOH or potassium hydroxide hydrolysis.
In the said method, organic extract liquid preferably can be from mixture the organic solvent of the saponified and unsaponifiable matter of extracting and demixing, be preferably benzinum;
In the said method, acid solution is any solution that can generate with saponified reaction aliphatic acid, and this acid solution is preferably hydrochloric acid solution or sulfuric acid solution.
Preferably, the preparation of collecting agent comprises the steps:
With the waste oil purification, then add alkali and be hydrolyzed, reaction temperature is that 50-90 ℃, reaction time are that 50-70 minute, alkali consumption are the 1-5% of waste oil quality, after resulting hydrolysate cooling, the extraction of use organic extract liquid, it is unsaponifiable matter at the middle and upper levels, lower floor is saponified; Take off a certain amount of acid solution of saponified adding of layer, so that the mass ratio of fatty acid mixed and mixing-in fat hydrochlorate is 1 in the product: 0.1-10 namely obtains collecting agent.
Preferably, the collecting agent of the application preparation take waste oil as raw material of the present invention comprises the steps: for the method for iron ore flotation defluorinate
To iron ore roughly select, selected and scan in step or a multistep, each step can be carried out 1 time or be repeated 1-6 time, wherein roughly select, selected and scan in each step adopt direct flotation or each to go on foot the employing reverse flotation,
Direct flotation comprises the steps:
Ore pulp to iron ore adds the pH values of pulp adjusting agent, adds any step or two steps in the inhibitor, adds afterwards collecting agent, then inflates, scrapes bubble, obtains froth pulp concentrate and bottom land product mine tailing.
Reverse flotation comprises the steps:
Add inhibitor, add any step or two steps in the activator to the iron ore ore pulp, add afterwards collecting agent, then inflate, scrape bubble, obtain froth pulp mine tailing and bottom land product concentrate;
Wherein inhibitor is preferably one or more in pyrophosphoric acid, waterglass, starch, sodium lignosulfonate, the CMS; Activator is preferably calcium chloride; The pH values of pulp adjusting agent is preferably sodium carbonate.
More preferably, the pH values of pulp adjusting agent is sodium carbonate in the direct flotation step, and inhibitor is pyrophosphoric acid;
More preferably, inhibitor is waterglass, sodium lignosulfonate, CMS in the reverse flotation step;
More preferably, inhibitor is pyrophosphoric acid, waterglass, starch in the selected step; Activator is calcium chloride;
More preferably, scan that the pH values of pulp adjusting agent is sodium carbonate in the step, inhibitor is sodium lignosulfonate;
Preferably, selected comprising the steps:
Add successively inhibitor in the concentrate that obtains to flotation, add any step or two steps in the collecting agent, then inflate, scrape bubble, bubble is directly inflated, scraped to the concentrate that perhaps flotation is obtained;
Preferably, scan and comprise the steps:
Add successively the pH values of pulp adjusting agent in the mine tailing that obtains to flotation, add inhibitor, add any step or the multistep in the collecting agent, then inflate, scrape bubble;
Wherein the preparation of collecting agent comprises the steps:
The waste oil of purification is hydrolyzed, and reaction temperature is 50-90 ℃, and the reaction time is 30-90 minute, after hydrolysis finishes, with resulting hydrolysate cooling, uses the organic extract liquid extraction, and it is unsaponifiable matter at the middle and upper levels, and lower floor is saponified; Take off a certain amount of acid solution of saponified adding of layer, so that the mass ratio of fatty acid mixed and mixing-in fat hydrochlorate is 1 in the product: 0.1-10.
Preferred purifying step comprises centrifugal removal suspension, adds certain water and removes the colloidality material, drying and dehydrating, carclazyte decolouring;
Hydrolysis is preferably NaOH or potassium hydroxide hydrolysis.
Organic extract liquid preferably can be from mixture the organic solvent of the saponified and unsaponifiable matter of extracting and demixing, be preferably benzinum;
Acid solution is any solution that can generate with saponified reaction aliphatic acid, and this acid solution is preferably hydrochloric acid solution or sulfuric acid solution.
Preferably, the preparation of collecting agent comprises the steps:
With the waste oil purification, then add alkali and be hydrolyzed, reaction temperature is that 50-90 ℃, reaction time are that 50-70 minute, alkali consumption are the 1-5% of waste oil quality, after resulting hydrolysate cooling, the extraction of use organic extract liquid, it is unsaponifiable matter at the middle and upper levels, lower floor is saponified; Take off a certain amount of acid solution of saponified adding of layer, so that the mass ratio of fatty acid mixed and mixing-in fat hydrochlorate is 1 in the product: 0.1-10 namely obtains collecting agent.
The collecting agent of using the preparation take waste oil as raw material of the present invention is used for can carrying out magnetic separation to mineral before the iron ore flotation defluorinate, the operations such as desulfurization, and then carry out flotation defluorinate step.
Beneficial effect
Collecting agent take waste oil as raw material production among the present invention is used for the iron ore flotation defluorinate at normal temperatures can reach preferably technical indicator, and can greatly reduce the loss of concentrate, improves the rate of recovery.This is conducive to save energy and reduce the cost, reduce the production cost of Mineral Processing Enterprises, improve the competitiveness of mineral processing in China enterprise, broken away from the past domestic ore such as iron ore and caused complex treatment process because grade is low, thereby cause cost higher, with the competition of Ore Imported in the disadvantage that is in a disadvantageous position.
Collecting agent production of the present invention with use in directly do not contact with human body, reduced the possibility that health is impacted, promote product and dominate the market on resistance also less.Fatty acid mixed collecting agent remaining in the ore dressing process finally is discharged into Tailings Dam, focuses on easily, perhaps with concentrate, can produce secondary pollution hardly.
From the pollution control angle, the present invention has proposed the fatty acid mixed collectors application of the preparation take waste oil as raw material innovatively in the iron ore flotation defluorinate.Use this series products, can farthest utilize the useful component in the waste oil, the collecting agent of producing is used for iron ore flotation can reach good technical indicator, does not particularly have new pollution sources to produce in the whole technique, has realized the double effects of pollution control and comprehensive utilization.The present invention can promote to realize pollution control and the comprehensive utilization of waste oil, benefits the whole society.
The collecting agent for preparing take waste oil as raw material among the present invention has further improved the technical indicator to the iron ore flotation defluorinate, is conducive to realize the more application of popularity.Therefore, the present invention is for avoiding environmental pollution, and it is all significant to improve the aspects such as mineral floating index, simplification production technology and the threat of minimizing food security.
The specific embodiment
In order to understand the present invention, the below further specifies the present invention with embodiment, but is not intended to limit protection scope of the present invention.
Embodiment 1 preparation collecting agent I
With the centrifugal removal suspension of waste oil, add a certain amount of water and remove the colloidality material, drying and dehydrating, then carclazyte decolouring adds NaOH and is hydrolyzed, and reaction temperature is that 60-80 ℃, reaction time are that 60 minutes, sodium hydroxide concentration are 2% of waste oil quality, after resulting hydrolysate cooling, use petroleum ether extraction, it is unsaponifiable matter at the middle and upper levels, and lower floor is saponified; A certain amount of mass concentration of saponified adding of taking off layer is 10% hydrochloric acid solution, so that the part by weight of fatty acid mixed and mixing-in fat acid sodium-salt is 1: 1 in the product, namely obtains collecting agent I.
Embodiment 2 preparation collecting agent II
With the centrifugal removal suspension of waste oil, add a certain amount of water and remove the colloidality material, drying and dehydrating, then carclazyte decolouring adds NaOH and is hydrolyzed, and reaction temperature is that 50-70 ℃, reaction time are that 70 minutes, sodium hydroxide concentration are 4% of waste oil quality, after resulting hydrolysate cooling, use petroleum ether extraction, it is unsaponifiable matter at the middle and upper levels, and lower floor is saponified; A certain amount of mass concentration of saponified adding of taking off layer is 8% hydrochloric acid solution, so that the part by weight of fatty acid mixed and mixing-in fat acid sodium-salt is 1: 10 in the product, namely obtains collecting agent II of the present invention.
Embodiment 3 preparation collecting agent III
With the centrifugal removal suspension of waste oil, add a certain amount of water and remove the colloidality material, drying and dehydrating, then carclazyte decolouring adds NaOH and is hydrolyzed, and reaction temperature is that 70-90 ℃, reaction time are that 30 minutes, sodium hydroxide concentration are 5% of waste oil quality, after resulting hydrolysate cooling, use petroleum ether extraction, it is unsaponifiable matter at the middle and upper levels, and lower floor is saponified; A certain amount of mass concentration of saponified adding of taking off layer is 12% hydrochloric acid solution, so that the part by weight of fatty acid mixed and mixing-in fat acid sodium-salt is 10: 1 in the product, namely obtains collecting agent III.
Embodiment 4: use the magnetic separation of iron ore concentrate reverse flotation defluorinate of collecting agent I after to desulfurization
Magnetic separation of iron ore concentrate is after desulfurization, the mass content 63% of iron, the mass content 1.3% of fluorine, carry out on this basis the defluorinate of iron ore concentrate reverse flotation, condition is: pulp density 40%, slurry temperature 20-25 ℃, pH values of pulp is about 8, sample ore stirs in the 0.75L flotation device after the 2min, adds waterglass 2000g/t, pharmacy effect time 3min, then add activator calcium chloride 200g/t, add collecting agent I 300g/t through after the 3min, after pharmacy effect 5min, add No. 2 oily 60g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 3min.Froth pulp is mine tailing, and bottom land is iron ore concentrate.
Carry out selectedly with iron ore concentrate, when selected, experimental condition is: pulp density 40%, slurry temperature 20-25 ℃, sample ore stirs in the 0.75L flotation device after the 3min, adds waterglass 1000g/t, pharmacy effect time 3min, then add collecting agent I 150g/t, after pharmacy effect 4min, add No. 2 oily 30g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 2min.
Obtain best floatation indicators: fluorine grade 0.15% in the iron ore concentrate, iron grade 68.80%, iron recovery reaches 91.12%.
Embodiment 5: use the magnetic separation of iron ore concentrate reverse flotation defluorinate of collecting agent II after to desulfurization
Magnetic separation of iron ore concentrate is after desulfurization, the mass content 63% of iron, the mass content 1.3% of fluorine, carry out on this basis the iron ore concentrate reverse flotation, condition is: pulp density 40%, slurry temperature 20-25 ℃, pH values of pulp is about 8, sample ore stirs in the 0.75L flotation device after the 2min, adds waterglass 2000g/t, pharmacy effect time 3min, then add activator calcium chloride 200g/t, add collecting agent II 300g/t through after the 3min, after pharmacy effect 5min, add No. 2 oily 60g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 3min.Froth pulp is mine tailing, and bottom land is iron ore concentrate.
Carry out selectedly with iron ore concentrate, when selected, experimental condition is: pulp density 40%, slurry temperature 20-25 ℃, sample ore stirs in the 0.75L flotation device after the 3min, adds waterglass 1000g/t, pharmacy effect time 3min, then add collecting agent II 150g/t, after pharmacy effect 4min, add No. 2 oily 30g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 2min.
Obtain best floatation indicators: fluorine grade 0.15% in the iron ore concentrate, iron grade 68.80%, iron recovery reaches 91.12%.
Embodiment 6: use the magnetic separation of iron ore concentrate reverse flotation defluorinate (use starch make inhibitor) of collecting agent I after to desulfurization
Take by weighing in the sodium chloride solution of 20g soluble starch adding 40ml 10%, stir, heat about 40min again in 80-90 ℃ of water-bath, color is milky, finally is diluted to 10% concentration by the starch consumption, is called starch No. 1.
Magnetic separation of iron ore concentrate is after desulfurization, the mass content 63% of iron, the mass content 1.3% of fluorine is carried out the iron ore concentrate reverse flotation on this basis, condition is: pulp density 40%, slurry temperature 20-25 ℃, pH values of pulp is about 8, and sample ore stirs after the 2min in the 0.75L flotation device, add waterglass 2000g/t, then pharmacy effect time 3min adds starch 2000g/t No. 1, stirring action 3min, add again activator calcium chloride 200g/t, add collecting agent I 300g/t through after the 3min, after pharmacy effect 5min, add No. 2 oily 60g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 3min.Froth pulp is mine tailing, and bottom land is iron ore concentrate.
Carry out selectedly with iron ore concentrate, when selected, experimental condition is: pulp density 40%, slurry temperature 20-25 ℃, sample ore stirs in the 0.75L flotation device after the 3min, adds waterglass 1000g/t, pharmacy effect time 3min, then add collecting agent I 150g/t, after pharmacy effect 4min, add No. 2 oily 30g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 2min.
Obtain best floatation indicators: fluorine grade 0.17% in the iron ore concentrate, iron grade 68.50%, iron recovery reaches 95.60%.
Embodiment 7: use collecting agent II to the defluorinate of magnetic separation of iron ore concentrate reverse flotation
Get iron ore concentrate 500g, in the flotation device of 0.75L, stir 2min, add waterglass 2000g/t, after the effect 3min, this moment, slurry pH was 8.21, added collecting agent II 300g/t, abundant effect through 5min medicament and mineral surfaces, add No. 2 oily 60g/t of foaming agent, inflation begins to scrape bubble after the stirring action 1min again, and scraping the bubble time is 3min.Next carry out selected to the bottom land concentrate, flowsheet of slurry agitation adds waterglass 1000g/t after the several seconds, add collecting agent II 150g/t after the stirring action 3min, adds No. 2 oily 40g/t of foaming agent after the stirring action 4min, begin to scrape bubble through inflating the several seconds after the 1min, scraping the bubble time is 2min.Then bottom land is carried out recleaning, flowsheet of slurry agitation adds waterglass 500g/t after the several seconds, add collecting agent II80g/t after the stirring action 3min, adds No. 2 oily 40g/t of foaming agent after the stirring action 4min, begin to scrape bubble through inflating the several seconds after the 1min, scraping the bubble time is 2min.
The final index that obtains is: the fluorine grade drops to 0.25% by 1.36% in the iron ore concentrate, and the iron grade is 68% in the iron ore concentrate, the rate of recovery 82.0% (oxygen is smart result forever); The fluorine grade drops to 0.44% by 1.80% in the iron ore concentrate, and the iron grade is 65.50% in the iron ore concentrate, the rate of recovery 81.72% (magnetic is smart result forever)
Embodiment 8: use collecting agent III to the magnetic separation of iron ore concentrate desulfurization after again reverse flotation defluorinate
Iron ore concentrate carries out the defluorinate of iron ore concentrate reverse flotation on this basis after desulfurization, add waterglass 2000g/t, then pharmacy effect time 3min adds starch 2000g/t No. 1, effect 3min, add again activator calcium chloride 200g/t, add collecting agent III 300g/t through after the 3min, after pharmacy effect 5min, add No. 2 oily 60g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 3min.Froth pulp is mine tailing, and bottom land is iron ore concentrate.Next iron ore concentrate carries out selected, ore pulp adds waterglass 1000g/t after the several seconds stirs, pharmacy effect time 3min, then add collecting agent III 150g/t, after pharmacy effect 4min, add No. 2 oily 30g/t of foaming agent, stirring action 1min, then inflate 20s, begin to scrape bubble, scrape bubble time 2min.
Obtain best floatation indicators: fluorine grade 0.15% in the iron ore concentrate, iron grade 68.95%, iron recovery reaches 95.80%.
Above embodiment shows that the collecting agent of waste oil preparation of the present invention has solved originally the technical problem of invention when Iron Ore Flotation stone, realized technique effect of the present invention.
Purposes of the present invention and method are described by specific embodiment.Those skilled in the art can use for reference the links such as content appropriate change raw material of the present invention, process conditions and realize corresponding other purpose, its relevant change does not all break away from content of the present invention, all similar replacements and change will become apparent to those skilled in the art that and all be deemed to be included within the scope of the present invention.

Claims (10)

1. the collecting agent of the preparation take waste oil as raw material is used for the method for iron ore flotation defluorinate, the method comprises that the collecting agent of the preparation take waste oil as raw material is used for the step of iron ore flotation defluorinate, wherein collecting agent prepares by the hydrolysis of waste oil, it is characterized in that the preparation of collecting agent comprises the steps:
The waste oil of purification is hydrolyzed, and reaction temperature is 50-90 ℃, and the reaction time is 30-90 minute, after hydrolysis finishes, with resulting hydrolysate cooling, uses the organic extract liquid extraction, and it is unsaponifiable matter at the middle and upper levels, and lower floor is saponified; Take off a certain amount of acid solution of saponified adding of layer, so that the mass ratio of fatty acid mixed and mixing-in fat hydrochlorate is 1: 0.1-10.
2. method according to claim 1, wherein purifying step comprises centrifugal removal suspension, adds certain water and removes the colloidality material, drying and dehydrating, carclazyte decolouring.
3. method according to claim 1 and 2 wherein is hydrolyzed to the hydrolysis of NaOH or potassium hydroxide.
4. method according to claim 1 and 2, wherein organic extract liquid is benzinum;
5. method according to claim 1 and 2, wherein acid solution is hydrochloric acid solution or sulfuric acid solution.
6. each described method according to claim 1 and 2 is characterized in that the preparation of collecting agent comprises the steps:
With the waste oil purification, then add alkali and be hydrolyzed, reaction temperature is that 50-90 ℃, reaction time are that 50-70 minute, alkali consumption are the 1-5% of waste oil quality, after resulting hydrolysate cooling, the extraction of use organic extract liquid, it is unsaponifiable matter at the middle and upper levels, lower floor is saponified; Take off a certain amount of acid solution of saponified adding of layer, so that the mass ratio of fatty acid mixed and mixing-in fat hydrochlorate is 1 in the product: 0.1-10 namely obtains collecting agent.
7. each described method according to claim 1-2, the method that the collecting agent that it is characterized in that the preparation take waste oil as raw material is used for the iron ore flotation defluorinate comprises the steps:
To iron ore roughly select, selected and scan in step or a multistep, each step can be carried out 1 time or be repeated 1-6 time, wherein roughly select, selected and scan in each step adopt direct flotation or each to go on foot the employing reverse flotation.
8. method according to claim 7, wherein inhibitor is one or more in pyrophosphoric acid, waterglass, starch, the sodium lignosulfonate; Activator is calcium chloride; The pH values of pulp adjusting agent is sodium carbonate.
9. method according to claim 8, wherein the pH values of pulp adjusting agent is sodium carbonate in the direct flotation step, inhibitor is pyrophosphoric acid; Inhibitor is waterglass, sodium lignosulfonate, CMS in the reverse flotation step; Inhibitor is pyrophosphoric acid, waterglass, starch in the selected step; Activator is calcium chloride; Scan that the pH values of pulp adjusting agent is sodium carbonate in the step, inhibitor is sodium lignosulfonate.
10. method according to claim 7, wherein
Selected comprising the steps:
Add successively inhibitor in the concentrate that obtains to flotation, add any step or multistep in the collecting agent, then inflate, scrape bubble, bubble is directly inflated, scraped to the concentrate that perhaps flotation is obtained;
Scan and comprise the steps:
Add successively the pH values of pulp adjusting agent in the mine tailing that obtains to flotation, add inhibitor, add any step or the multistep in the collecting agent, then inflate, scrape bubble.
CN 201010169973 2010-05-12 2010-05-12 Method for using collecting agent prepared from drainage oil for flotation and defluorination of iron ores Expired - Fee Related CN102240604B (en)

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CN104190549A (en) * 2014-09-03 2014-12-10 鞍钢集团矿业公司 Composite inhibitor for reverse flotation of hematite
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