CN112844858A - Bauxite direct flotation desilicication collecting agent and preparation process thereof - Google Patents
Bauxite direct flotation desilicication collecting agent and preparation process thereof Download PDFInfo
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- CN112844858A CN112844858A CN202110013315.XA CN202110013315A CN112844858A CN 112844858 A CN112844858 A CN 112844858A CN 202110013315 A CN202110013315 A CN 202110013315A CN 112844858 A CN112844858 A CN 112844858A
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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
- B03D1/018—Mixtures of inorganic and organic compounds
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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
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Abstract
The invention belongs to the technical field of bauxite flotation desilication, and discloses a bauxite direct flotation desilication collecting agent and a preparation process thereof, wherein the collecting agent is prepared by compounding main materials and auxiliary materials: the main material comprises the following components: 75 to 85 percent of fatty acid with high iodine value; 10 to 15 percent of sodium hydroxide; the auxiliary materials comprise the following components: 0.5 to 10 percent of hydroximic acid; 1% -3% of surfactant; wherein the sum of all components in the collecting agent is 100%; the surfactant is formed by mixing alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate; the bauxite direct flotation desilication collecting agent is obtained based on modified compounding of main materials and auxiliary materials; specifically, in the collecting agent, the dissolubility, selectivity and collecting property of the collecting agent can be greatly improved through saponification reaction and the addition of the surfactant, so that the efficient utilization of resources, energy conservation, emission reduction, cost reduction and efficiency improvement are facilitated.
Description
Technical Field
The invention belongs to the technical field of bauxite flotation desilication, and particularly relates to a bauxite direct flotation desilication collecting agent and a preparation process thereof.
Background
Bauxite is a generic term for industrially usable ores composed of gibbsite, boehmite, or diaspore as a main mineral; aluminum is the second most commonly used metal next to steel because it has many excellent properties and is widely used in various industries. With the rapid development and continuous expansion of the aluminum industry, and the increasing expansion of the usage of non-metallurgical grade multi-variety alumina, the alumina industry will also obtain comprehensive and continuous prosperity and development, and bauxite is an important raw material in the aluminum oxide industry and the refractory material industry.
With the development of economy, the resources of high-quality bauxite are gradually reduced, and how to adopt an economical and reasonable beneficiation method to improve the grade of poor bauxite, remove impurities in the poor bauxite and provide high-quality raw materials for the alumina industry is a worldwide subject, which arouses the wide attention of China and countries all over the world. At present, the existing fatty acid collecting agent for bauxite beneficiation has the defects of poor selectivity, large using amount, non-ideal sorting index and the like, so that the resource consumption in the bauxite beneficiation process is increased, and the production cost is increased.
Disclosure of Invention
In view of the above, in order to solve the problems in the background art, the present invention aims to provide a bauxite positive flotation desilication collector and a preparation process thereof.
In order to achieve the purpose, the invention provides the following technical scheme:
a bauxite positive flotation desilicication collecting agent is prepared by compounding main materials and auxiliary materials:
the main material comprises the following components:
75 to 85 percent of fatty acid with high iodine value;
10 to 15 percent of sodium hydroxide;
the auxiliary materials comprise the following components:
0.5 to 10 percent of hydroximic acid;
1% -3% of surfactant;
wherein
The sum of all components in the collecting agent is 100%;
the surfactant is prepared by mixing alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate.
Preferably, the high-iodine-value fatty acid is oleic acid or linoleic acid, and the iodine value of the high-iodine-value fatty acid is 130-145.
Preferably, the sodium hydroxide is industrial grade sodium hydroxide in the form of flake, powder or a mixture of the flake and the powder.
Preferably, the hydroxamic acid is C5-9Alkyl hydroximic acids.
Preferably, among the surfactants, sodium alpha olefin sulfonate: sodium lauryl sulfate: sodium fatty alcohol polyoxyethylene ether sulfate is 3: 1: 6.
preferably, the ratio of each component in the surfactant is as follows:
0.3 to 0.9 percent of alpha olefin sodium sulfonate;
sodium dodecyl sulfate, 0.1% -0.3%;
0.6 to 1.8 percent of fatty alcohol-polyoxyethylene ether sodium sulfate.
In order to achieve the above purpose, the invention also provides the following technical scheme:
the preparation process of the bauxite direct flotation desilication collecting agent comprises the following steps:
s1, mixing alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate serving as raw materials to prepare a surfactant;
s2, weighing the following components in proportion: 75 to 85 percent of fatty acid with high iodine value; 10 to 15 percent of sodium hydroxide; 0.5 to 10 percent of hydroximic acid; 1% -3% of surfactant;
s3, mixing the high-iodine-value fatty acid, the hydroximic acid and the sodium hydroxide weighed in the step S2, and performing saponification reaction to obtain a saponified fatty acid, a hydroximic acid and a corresponding salt mixture;
s4, adding the surfactant obtained in the step S1 into the mixture obtained in the step S3 in proportion, uniformly stirring, and compounding to obtain the bauxite direct flotation desilication collecting agent.
Preferably, in step S1, the ratio of 3: 1: 6, mixing alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate according to the mass ratio, adding water, heating and stirring until the mixture is completely dissolved to prepare a liquid surfactant; wherein the heating temperature is 80-95 ℃.
Preferably, in the step S3, the saponification reaction is performed at a reaction temperature of 50 to 85 ℃ for a reaction time of 20 to 35 min.
Preferably, in the step S4, the mixing and stirring time is 15min to 30 min.
Compared with the prior art, the invention has the following beneficial effects:
the bauxite direct flotation desilication collecting agent provided by the invention is obtained based on modified compounding of main materials and auxiliary materials. Specifically, in the collecting agent, the solubility, the selectivity and the collecting property of the collecting agent can be greatly improved through saponification reaction and the addition of the surfactant, so that the efficient utilization of resources, energy conservation, emission reduction, cost reduction and efficiency improvement are facilitated, and the collecting agent has important significance for improving the comprehensive competitiveness of bauxite ore dressing plants. In addition, the collecting agent has the advantages of wide raw material source, simple preparation process, good stability, small adverse effect of the agent on human bodies and the environment, simple preparation method and strong market popularization value.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a bauxite direct flotation desilication collecting agent, which mainly comprises the following components:
main materials:
the high-iodine-value fatty acid is preferably oleic acid or linoleic acid, and the iodine value is 130-145;
sodium hydroxide, preferably in the form of flake, powder or a mixture thereof.
Auxiliary materials:
hydroximic acids, preferably with C5-9Alkyl hydroximic acids;
the surfactant is preferably used in a mass ratio of 3: 1: 6, sodium alpha olefin sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate.
The following examples are provided herein for a detailed explanation of the bauxite positive flotation desilication collector disclosed above
Example 1
A bauxite positive flotation desilication collector, comprising:
main materials: 75% high iodine number fatty acid; 15% sodium hydroxide;
auxiliary materials: 8% of hydroximic acid; 2% of a surfactant (0.6% of sodium alpha olefin sulfonate, 0.2% of sodium dodecyl sulfate and 1.2% of sodium fatty alcohol-polyoxyethylene ether sulfate).
Specifically, the process for preparing the bauxite direct flotation desilication collecting agent comprises the following steps:
s1, taking alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate as raw materials, and mixing the raw materials in a proportion of 3: 1: 6, mixing the components in a mass ratio to prepare a surfactant;
s2, weighing the following components in proportion: 75% high iodine number fatty acid; 15% sodium hydroxide; 8% of hydroximic acid; 2% of a surfactant;
s3, mixing the high-iodine-value fatty acid, the hydroximic acid and the sodium hydroxide weighed in the step S2, and performing saponification reaction to obtain a saponified fatty acid, a hydroximic acid and a corresponding salt mixture;
s4, adding the surfactant obtained in the step S1 into the mixture obtained in the step S3 in proportion, uniformly stirring, and compounding to obtain the bauxite direct flotation desilication collecting agent.
Example 2
A bauxite positive flotation desilication collector, comprising:
main materials: 80% high iodine value fatty acid; 13% sodium hydroxide;
auxiliary materials: 6% of hydroximic acid; 1% of a surfactant (0.3% of sodium alpha olefin sulfonate, 0.1% of sodium dodecyl sulfate and 0.6% of sodium fatty alcohol-polyoxyethylene ether sulfate).
Specifically, the process for preparing the bauxite direct flotation desilication collecting agent comprises the following steps:
s1, taking alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate as raw materials, and mixing the raw materials in a proportion of 3: 1: 6, mixing the components in a mass ratio to prepare a surfactant;
s2, weighing the following components in proportion: 80% high iodine value fatty acid; 13% sodium hydroxide; 6% of hydroximic acid; 1% of a surfactant;
s3, mixing the high-iodine-value fatty acid, the hydroximic acid and the sodium hydroxide weighed in the step S2, and performing saponification reaction to obtain a saponified fatty acid, a hydroximic acid and a corresponding salt mixture;
s4, adding the surfactant obtained in the step S1 into the mixture obtained in the step S3 in proportion, uniformly stirring, and compounding to obtain the bauxite direct flotation desilication collecting agent.
Example 3
A bauxite positive flotation desilication collector, comprising:
main materials: 82% high iodine number fatty acid; 14% sodium hydroxide;
auxiliary materials: 2.5% hydroxamic acid; 1.5% of a surfactant (0.45% of sodium alpha olefin sulfonate, 0.15% of sodium dodecyl sulfate, 0.9% of sodium fatty alcohol-polyoxyethylene ether sulfate).
Specifically, the process for preparing the bauxite direct flotation desilication collecting agent comprises the following steps:
s1, taking alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate as raw materials, and mixing the raw materials in a proportion of 3: 1: 6, mixing the components in a mass ratio to prepare a surfactant;
s2, weighing the following components in proportion: 82% high iodine number fatty acid; 14% sodium hydroxide; 2.5% hydroxamic acid; 1.5% of a surfactant;
s3, mixing the high-iodine-value fatty acid, the hydroximic acid and the sodium hydroxide weighed in the step S2, and performing saponification reaction to obtain a saponified fatty acid, a hydroximic acid and a corresponding salt mixture;
s4, adding the surfactant obtained in the step S1 into the mixture obtained in the step S3 in proportion, uniformly stirring, and compounding to obtain the bauxite direct flotation desilication collecting agent.
Example 4
A bauxite positive flotation desilication collector, comprising:
main materials: 85% of high iodine value fatty acid; 10% sodium hydroxide;
auxiliary materials: 2% of hydroximic acid; 3% of a surfactant (0.9% of sodium alpha olefin sulfonate, 0.3% of sodium dodecyl sulfate, 1.8% of sodium fatty alcohol-polyoxyethylene ether sulfate).
Specifically, the process for preparing the bauxite direct flotation desilication collecting agent comprises the following steps:
s1, taking alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate as raw materials, and mixing the raw materials in a proportion of 3: 1: 6, mixing the components in a mass ratio to prepare a surfactant;
s2, weighing the following components in proportion: 85% of high iodine value fatty acid; 10% sodium hydroxide; 2% of hydroximic acid; 3% of a surfactant;
s3, mixing the high-iodine-value fatty acid, the hydroximic acid and the sodium hydroxide weighed in the step S2, and performing saponification reaction to obtain a saponified fatty acid, a hydroximic acid and a corresponding salt mixture;
s4, adding the surfactant obtained in the step S1 into the mixture obtained in the step S3 in proportion, uniformly stirring, and compounding to obtain the bauxite direct flotation desilication collecting agent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The bauxite direct flotation desilicication collecting agent is characterized by being prepared by compounding a main material and an auxiliary material;
the main material comprises the following components:
75 to 85 percent of fatty acid with high iodine value;
10 to 15 percent of sodium hydroxide;
the auxiliary materials comprise the following components:
0.5 to 10 percent of hydroximic acid;
1% -3% of surfactant;
wherein
The sum of all components in the collecting agent is 100%;
the surfactant is prepared by mixing alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate.
2. The collector for bauxite direct flotation desilication according to claim 1, wherein: the high-iodine-value fatty acid is oleic acid or linoleic acid, and the iodine value of the high-iodine-value fatty acid is 130-145.
3. The collector for bauxite direct flotation desilication according to claim 1, wherein: the sodium hydroxide is flake, powder or mixed industrial sodium hydroxide.
4. The collector for bauxite direct flotation desilication according to claim 1, wherein: the hydroximic acid is C5-9Alkyl hydroximic acids.
5. The collector for bauxite direct flotation desilication according to claim 1, wherein: sodium alpha olefin sulfonate among the surfactants: sodium lauryl sulfate: sodium fatty alcohol polyoxyethylene ether sulfate is 3: 1: 6.
6. the collector for bauxite direct flotation desilication according to claim 5, wherein the surfactant comprises the following components in percentage by weight:
0.3 to 0.9 percent of alpha olefin sodium sulfonate;
sodium dodecyl sulfate, 0.1% -0.3%;
0.6 to 1.8 percent of fatty alcohol-polyoxyethylene ether sodium sulfate.
7. The process of preparing a collector for bauxite direct flotation desilication according to any one of claims 1 to 6, comprising the steps of:
s1, mixing alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate serving as raw materials to prepare a surfactant;
s2, weighing the following components in proportion: 75 to 85 percent of fatty acid with high iodine value; 10 to 15 percent of sodium hydroxide; 0.5 to 10 percent of hydroximic acid; 1% -3% of surfactant;
s3, mixing the high-iodine-value fatty acid, the hydroximic acid and the sodium hydroxide weighed in the step S2, and performing saponification reaction to obtain a saponified fatty acid, a hydroximic acid and a corresponding salt mixture;
s4, adding the surfactant obtained in the step S1 into the mixture obtained in the step S3 in proportion, uniformly stirring, and compounding to obtain the bauxite direct flotation desilication collecting agent.
8. The process of preparing a bauxite direct flotation desilication collector according to claim 7, characterized in that: in the step S1, in the step of 3: 1: 6, mixing alpha olefin sodium sulfonate, sodium dodecyl sulfate and fatty alcohol-polyoxyethylene ether sodium sulfate according to the mass ratio, adding water, heating and stirring until the mixture is completely dissolved to prepare a liquid surfactant; wherein the heating temperature is 80-95 ℃.
9. The process of preparing a bauxite direct flotation desilication collector according to claim 7, characterized in that: in the step S3, the saponification reaction is performed at a temperature of 50 to 85 ℃ for 20 to 35 min.
10. The process of preparing a bauxite direct flotation desilication collector according to claim 7, characterized in that: in the step S4, the compounding and stirring time is 15min to 30 min.
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Cited By (1)
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| CN114798183A (en) * | 2021-06-21 | 2022-07-29 | 昆明冶金研究院有限公司 | Bauxite direct flotation collecting agent and preparation method and application thereof |
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