CN110898998A - Method for flotation of phlogopite by synergistic effect of microorganisms and dodecylamine - Google Patents
Method for flotation of phlogopite by synergistic effect of microorganisms and dodecylamine Download PDFInfo
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- CN110898998A CN110898998A CN201911163333.5A CN201911163333A CN110898998A CN 110898998 A CN110898998 A CN 110898998A CN 201911163333 A CN201911163333 A CN 201911163333A CN 110898998 A CN110898998 A CN 110898998A
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- phlogopite
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- dodecylamine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/01—Organic compounds containing nitrogen
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/02—Collectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D2203/00—Specified materials treated by the flotation agents; specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
Abstract
A method for flotation of phlogopite by synergistic action of microorganisms and dodecylamine belongs to the technical field of microorganism application technology and mineral processing, can solve the problems of large drug consumption, poor selectivity, large mineralization difficulty and high cost of the existing traditional medicament flotation of phlogopite, and firstly levigating a phlogopite sample to-200 meshes; secondly, culturing bacillus amyloliquefaciens; preparing the phlogopite and bacillus amyloliquefaciens liquid into flotation pulp; finally adding a dodecylamine collecting agent for flotation. The method uses the combination of the microorganism and the chemical agent, utilizes the microorganism and the metabolite thereof to adsorb the phlogopite, changes the surface property of the phlogopite, improves the floatability of the phlogopite, and promotes the effective contact of the dodecylamine and the phlogopite, thereby reducing the drug consumption and saving the cost.
Description
Technical Field
The invention belongs to the technical field of microorganism application technology and mineral processing, and particularly relates to a method for flotation of phlogopite through synergistic effect of microorganisms and dodecylamine.
Background
With the rapid development of society, the development of iron ore resources has become an important support for the development of national economy. The large-scale exploitation of iron ore provides important support for the long-term development of the steel industry in China, and the demand of high-purity iron ore concentrate is greatly increased both quantitatively and qualitatively. Therefore, under the new situation, it becomes more important to explore a way for producing high-purity iron ore concentrate economically and effectively.
The high-purity iron ore concentrate is mainly used for powder metallurgy, magnetic materials, basic materials for producing permanent magnetic ferrite products, synthetic ammonia catalysts and the like. Mica, a common silicate mineral in magnetite, is difficult to separate effectively because of its small difference in floatability from magnetite in an aqueous phase. In addition, both iron-containing silicate (phlogopite and the like) and iron minerals have a large amount of structural iron ions, and have small difference in physicochemical properties and poor floatability, so that the conventional flotation is difficult. Foams generated when conventional cationic collectors such as dodecylamine and the like float mica are sticky and difficult to break for a long time, so that large water consumption for defoaming and large consumption of medicaments are caused, and the flotation cost of enterprises is high. Therefore, research and development of novel agents for separating phlogopite and magnetite by reverse flotation has become an important research topic at present.
The microbial flotation reagent has proved to replace the existing mineral flotation chemical reagent or to be synergistic with the chemical reagent due to the strong selectivity, the economy and no environmental pollution, and is increasingly the hot point of research. The microbial flotation is mainly applied to ore flotation in microbiology, chemistry, engineering and the like, and is a selective separation flotation method for treating various refractory minerals by fully stirring, enabling bacteria to be subjected to biological adsorption or metabolite adsorption on the surfaces of the minerals, changing the hydrophilicity of the surfaces of the minerals and combining with a flotation process.
In the microorganisms and metabolites thereof, the contained nonpolar groups such as hydrocarbon chains and the like and polar groups such as carbonyl groups, hydroxyl groups, phosphate groups and the like cause the microbial liquids to be similar to surfactants, and can directly or indirectly react with minerals in the modes of biological accumulation, biological adsorption and biological absorption, so that the microbial liquids are hydrophobic or hydrophilic, flocculated or dispersed, the physicochemical properties of the surfaces of the minerals are selectively changed, the target metal minerals are effectively recovered, and the separation from the phlogopite is realized. The iron ore is floated by utilizing the coordination of microorganisms and chemical flotation reagents, so that the purposes of effectively reducing the medicine consumption, reducing the enterprise flotation cost and meeting the requirements of environment-friendly ore dressing technology can be achieved, and great attention is paid to the mineral processing industry.
Disclosure of Invention
The invention provides a method for flotation of phlogopite by synergistic action of microorganisms and dodecylamine, aiming at the problems of high drug consumption, poor selectivity, high mineralization difficulty and high cost of the existing traditional medicament flotation phlogopite.
The invention adopts the following technical scheme:
a method for flotation of phlogopite by synergistic action of microorganisms and dodecylamine comprises the following steps:
firstly, grinding a phlogopite ore sample to-200 meshes and blending into ore pulp;
secondly, adding a bacterium solution of bacillus amyloliquefaciens into the ore pulp obtained in the first step, and uniformly stirring to obtain a slurry;
and step three, adding an amine collecting agent into the slurry obtained in the step two, stirring, scraping bubbles, and performing flotation.
The concentration of the pulp in the first step is 6-15%.
In the second step, the bacillus amyloliquefaciens is cultured at constant temperature by taking soil as a separation source in a shaking mode, the shaking mode adopts a 250ml conical flask, the volume of a culture medium is 125ml, the rotation speed of a shaking table is 15-200r/min, the culture temperature is 25-35 ℃, the inoculation concentration is 2.5-15%, the culture time is 2-10d, and the cultured bacteria are stored at the temperature of 3-5 ℃; wherein the components of the culture medium are as follows: sucrose 30g/L, NaNO33g/L，MgSO4•7H2O 0.5 g/L，KCl 0.5 g/L，FeSO4•7H2O 0.01g/L， K2HPO41g/L。
In the second step, the adding amount of the bacteria liquid accounts for 5-100% of the total volume of the ore pulp, and the mixture is stirred for 2-3min at the rotating speed of the flotation machine of 1500-.
In the third step, the amine collecting agent is dodecylamine, the adding amount is 40-60mg/l, after the dodecylamine is added, the stirring time is 2-3mim, and the foam scraping time is 2-3 min.
The invention has the following beneficial effects:
the method uses the combination of the microorganism and the chemical agent, utilizes the microorganism and the metabolite thereof to adsorb the phlogopite, changes the surface property of the phlogopite, improves the floatability of the phlogopite, and promotes the effective contact of the dodecylamine and the phlogopite, thereby reducing the drug consumption and saving the cost.
Drawings
FIG. 1 is a process flow diagram of the present invention.
FIG. 2 is an X-ray spectrum of phlogopite used in the examples of the present invention.
Detailed Description
A method for flotation of phlogopite by synergistic action of microorganisms and dodecylamine comprises the following steps:
firstly, grinding a phlogopite ore sample to-200 meshes and blending into ore pulp;
secondly, adding a bacterium solution of bacillus amyloliquefaciens into the ore pulp obtained in the first step, and uniformly stirring to obtain a slurry;
and step three, adding an amine collecting agent into the slurry obtained in the step two, stirring, scraping bubbles, and performing flotation.
The chemical composition of the phlogopite used in the present invention is shown in the following table.
Comparative example
Weighing and grinding to obtain 3.0g of-200-mesh phlogopite, mixing pulp in a flotation tank according to the pulp concentration of 10%, stirring for 2min at the rotating speed of 2000r/min, adding different amounts of dodecylamine, stirring for 2min, and aerating and scraping for 2-3 min. Wherein the dosage of the dodecylamine is respectively 20, 40, 60, 80, 100, 120, 140, 160, 180 and 200 mg/l. The test results are shown in the following table.
Example 1: weighing and grinding to 3.0g of-200-mesh phlogopite, weighing bacillus amyloliquefaciens liquid and distilled water with different volumes and the culture time of 2d, mixing the liquid and the distilled water in a flotation tank according to the ore pulp concentration of 10%, stirring for 2min at the rotating speed of 2000r/min, adding 50mg/l of dodecylamine, stirring for 2min, and blowing for 2-3min by air inflation.
The results of this example are shown in the following table.
Example 2: weighing and grinding to 3.0g of-200-mesh phlogopite, weighing bacillus amyloliquefaciens liquid and distilled water with different volumes and culture time of 4d, mixing the liquid and the distilled water in a flotation tank according to the ore pulp concentration of 6%, stirring for 2min at the rotating speed of 2000r/min, adding 45mg/l of dodecylamine, stirring for 2min, and carrying out air inflation and foam scraping for 2-3 min.
The results of this example are as follows.
Example 3: weighing and grinding to 3.0g of-200-mesh phlogopite, weighing bacillus amyloliquefaciens liquid and distilled water with different volumes and the culture time of 6d, mixing the liquid and the distilled water in a flotation tank according to the ore pulp concentration of 15%, stirring for 2min at the rotating speed of 2000r/min, adding 60mg/l of dodecylamine, stirring for 2min, and carrying out air inflation and foam scraping for 2-3 min.
The results of this example are as follows.
Example 4: weighing and grinding to 3.0g of-200-mesh phlogopite, weighing bacillus amyloliquefaciens liquid and distilled water with different volumes and the culture time of 8d, mixing the liquid and the distilled water in a flotation tank according to the pulp concentration of 12%, stirring for 2min at the rotating speed of 2000r/min, adding 50mg/l of dodecylamine, stirring for 2min, and carrying out air inflation and foam scraping for 2-3 min.
The results of this example are as follows.
Example 5: weighing and grinding to 3.0g of-200-mesh phlogopite, weighing bacillus amyloliquefaciens liquid and distilled water with different volumes and the culture time of 10d, mixing the liquid and the distilled water in a flotation tank according to the ore pulp concentration of 10%, stirring for 2min at the rotating speed of 2000r/min, adding 45mg/l of dodecylamine, stirring for 2min, and blowing for 2-3min by inflating.
The results of this example are as follows.
Claims (5)
1. A method for flotation of phlogopite by the synergistic action of microorganisms and dodecylamine is characterized by comprising the following steps: the method comprises the following steps:
firstly, grinding a phlogopite ore sample to-200 meshes and blending into ore pulp;
secondly, adding a bacterium solution of bacillus amyloliquefaciens into the ore pulp obtained in the first step, and uniformly stirring to obtain a slurry;
and step three, adding an amine collecting agent into the slurry obtained in the step two, stirring, scraping bubbles, and performing flotation.
2. The method for flotation of phlogopite by synergy of microorganisms and dodecylamine according to claim 1, wherein: the concentration of the pulp in the first step is 6-15%.
3. The method for flotation of phlogopite by synergy of microorganisms and dodecylamine according to claim 1, wherein: in the second step, the bacillus amyloliquefaciens is cultured at constant temperature by taking soil as a separation source in a shaking mode, the shaking mode adopts a 250ml conical flask, the volume of a culture medium is 125ml, the rotation speed of a shaking table is 15-200r/min, the culture temperature is 25-35 ℃, the inoculation concentration is 2.5-15%, the culture time is 2-10d, and the cultured bacteria are stored at the temperature of 3-5 ℃; wherein the components of the culture medium are as follows: sucrose 30g/L, NaNO33g/L，MgSO4•7H2O 0.5 g/L，KCl 0.5 g/L，FeSO4•7H2O 0.01 g/L，K2HPO41g/L。
4. The method for flotation of phlogopite by synergy of microorganisms and dodecylamine according to claim 1, wherein: in the second step, the adding amount of the bacteria liquid accounts for 5-100% of the total volume of the ore pulp, and the mixture is stirred for 2-3min at the rotating speed of the flotation machine of 1500-.
5. The method for flotation of phlogopite by synergy of microorganisms and dodecylamine according to claim 1, wherein: in the third step, the amine collecting agent is dodecylamine, the adding amount is 40-60mg/l, after the dodecylamine is added, the stirring time is 2-3mim, and the foam scraping time is 2-3 min.
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Citations (8)
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| SU1311778A1 (en) * | 1985-05-14 | 1987-05-23 | Институт химии им.В.И.Никитина | Method of preparing depressor for flotation of nonsulphuric ores |
| CN102861674A (en) * | 2012-09-29 | 2013-01-09 | 北京科技大学 | Floatation processing method of pyrolusite |
| CN104525381A (en) * | 2014-12-16 | 2015-04-22 | 平顶山华兴浮选工程技术服务有限公司 | Method of microorganism induction bauxite flotation desilicication |
| CN105132302A (en) * | 2015-02-28 | 2015-12-09 | 四川理工学院 | Application of bacillus cereus in processing of tannery wastewater COD |
| CN105363563A (en) * | 2015-12-21 | 2016-03-02 | 太原理工大学 | Reverse flotation de-ashing method for lignite |
| CN109554541A (en) * | 2018-12-20 | 2019-04-02 | 太原理工大学 | A kind of method of mica in removing magnetic separation of iron ore concentrate |
| CN109622214A (en) * | 2018-12-24 | 2019-04-16 | 贺州市骏鑫矿产品有限责任公司 | A kind of albite method for concentrating |
| CN110066756A (en) * | 2019-05-29 | 2019-07-30 | 漳州三炬生物技术有限公司 | One plant of gram of lining institute's series bacillus and its preparation and application |
-
2019
- 2019-11-25 CN CN201911163333.5A patent/CN110898998A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1311778A1 (en) * | 1985-05-14 | 1987-05-23 | Институт химии им.В.И.Никитина | Method of preparing depressor for flotation of nonsulphuric ores |
| CN102861674A (en) * | 2012-09-29 | 2013-01-09 | 北京科技大学 | Floatation processing method of pyrolusite |
| CN104525381A (en) * | 2014-12-16 | 2015-04-22 | 平顶山华兴浮选工程技术服务有限公司 | Method of microorganism induction bauxite flotation desilicication |
| CN105132302A (en) * | 2015-02-28 | 2015-12-09 | 四川理工学院 | Application of bacillus cereus in processing of tannery wastewater COD |
| CN105363563A (en) * | 2015-12-21 | 2016-03-02 | 太原理工大学 | Reverse flotation de-ashing method for lignite |
| CN109554541A (en) * | 2018-12-20 | 2019-04-02 | 太原理工大学 | A kind of method of mica in removing magnetic separation of iron ore concentrate |
| CN109622214A (en) * | 2018-12-24 | 2019-04-16 | 贺州市骏鑫矿产品有限责任公司 | A kind of albite method for concentrating |
| CN110066756A (en) * | 2019-05-29 | 2019-07-30 | 漳州三炬生物技术有限公司 | One plant of gram of lining institute's series bacillus and its preparation and application |
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Application publication date: 20200324 |