CN114100843B - Low-grade fluorite carbon reduction and quality improvement method - Google Patents
Low-grade fluorite carbon reduction and quality improvement method Download PDFInfo
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- CN114100843B CN114100843B CN202111291095.3A CN202111291095A CN114100843B CN 114100843 B CN114100843 B CN 114100843B CN 202111291095 A CN202111291095 A CN 202111291095A CN 114100843 B CN114100843 B CN 114100843B
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
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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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
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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
- B03D1/012—Organic compounds containing sulfur
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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
- B03D1/025—Froth-flotation processes adapted for the flotation of fines
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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
- B03D1/08—Subsequent treatment of concentrated product
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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
- B03D2201/00—Specified effects produced by the flotation agents
- B03D2201/06—Depressants
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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 provides a low-grade fluorite carbon reduction and quality improvement method, which comprises the following steps: step 1, mixing the extracted low-grade fluorite; step 2, adding a certain amount of water into the quality improvement reaction kettle; step 3, weighing quantitative anhydrous calcium chloride, and adding the quantitative anhydrous calcium chloride into a quality improvement reaction kettle; step 4, adding a certain amount of hydrochloric acid into the quality improvement reaction kettle; step 5, stirring for 20 minutes to upgrade the liquid in the reaction kettle; step 6, adding the low-grade fluorite into a quality-improving reaction kettle; and 7, filtering materials in the upgrading reaction kettle to obtain upgraded fluorite and calcium chloride mother liquor. Step 8, adding a part of calcium chloride mother liquor into a impurity removal reaction kettle; step 9, adding slaked lime into the impurity removal reaction kettle; and step 10, evaporating and crystallizing the filtered calcium chloride mother liquor. The invention solves the technical problems of how to realize the carbon reduction and quality improvement of low-grade fluorite, reduce the impurity content of fluorite ore bodies and obtain high-quality fluorite concentrate.
Description
Technical Field
The invention relates to the field of fluorite upgrading, in particular to a low-grade fluorite carbon reduction upgrading method.
Background
The Hunan fluorite resource reserves are rich (fluorite resource reserves reach 1 hundred million tons), are mainly concentrated in the Chenzhou area, mainly take associated fluorite resources, and only the persimmon bamboo garden tungsten multi-metal associated fluorite resource reserves 7564 ten thousand tons account for 71% of the total associated fluorite reserves in the whole country. By comprehensively utilizing the associated fluorite resources, the fluorite resources of a plurality of enterprises are discarded along with the tungsten tailings except for fluorite in the persimmon bamboo garden tungsten polymetallic tailings. Although fluorite resources of some enterprises are comprehensively utilized, in recent years, the natural endowment of raw ore resources of the persimmon bamboo garden tungsten polymetallic ore is increasingly worse, the mud content and the calcium carbonate content in the tungsten tailings are higher and higher, and the fluorite production index is greatly adversely affected. Meanwhile, the metallurgical grade low-grade fluorite concentrate has the problems of high cost, low added value and the like due to low grade and high impurity content of silicon, calcium carbonate and the like. Therefore, how to realize the carbon reduction and quality improvement of low-grade fluorite, reduce the impurity content of fluorite ore body, and obtain high-quality fluorite concentrate is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
The invention aims to provide a low-grade fluorite carbon reduction and quality improvement method, which is used for solving the technical problem of how to realize the carbon reduction and quality improvement of low-grade fluorite, reduce the impurity content of fluorite ore bodies and obtain high-quality fluorite concentrate.
In order to achieve the above purpose, the present invention provides the following technical solutions: a low-grade fluorite carbon reduction and quality improvement method comprises the following steps:
step 1, mixing the extracted low-grade fluorite, analyzing the main content of raw material components and the content of calcium carbonate, and equally packaging into a plurality of bags;
step 2, adding a certain amount of water into the quality improvement reaction kettle;
step 3, weighing quantitative anhydrous calcium chloride, adding the quantitative anhydrous calcium chloride into the quality improvement reaction kettle, and stirring the quality improvement reaction kettle;
step 4, opening an exhaust valve of the quality improvement reaction kettle, and adding a certain amount of hydrochloric acid into the quality improvement reaction kettle;
step 5, closing a hydrochloric acid discharge port valve, and stirring the liquid in the upgrading reaction kettle for 20 minutes;
step 6, adding the low-grade fluorite bag into the upgrading reaction kettle and uniformly stirring;
and 7, filtering the materials in the upgrading reaction kettle to obtain upgraded fluorite and calcium chloride mother liquor.
Step 8, refluxing a part of calcium chloride mother liquor to the upgrading reaction kettle through a recycling pipe, and adding the other part of calcium chloride mother liquor to the impurity removal reaction kettle;
step 9, adding slaked lime into the impurity removal reaction kettle to enable impurities in the calcium chloride mother liquor to be settled;
and step 10, filtering the calcium chloride mother liquor in the impurity removal reaction kettle, and evaporating and crystallizing the filtered calcium chloride mother liquor to obtain a calcium chloride dihydrate byproduct.
Further, the step 2 further includes:
and (3) metering water by adopting a liquid level meter, and adding the water in the liquid level meter into the quality improvement reaction kettle.
Further, the step 4 further includes:
and adding hydrochloric acid into a hydrochloric acid metering tank, measuring the hydrochloric acid, opening an exhaust valve of the quality improvement reaction kettle, and adding the hydrochloric acid into the quality improvement reaction kettle.
Further, before the step 4, checking whether leakage exists in the hydrochloric acid storage tank and the hydrochloric acid metering tank, wearing a protection tool, and starting an indoor tail gas fan.
Further, between the step 6 and the step 7, the method further includes:
the carbon dioxide produced by the reaction was absorbed with 15% caustic soda.
Further, after the step 3, the quality improvement reaction kettle is kept stand for one night, and then the step 4 is executed.
Further, the step 1 specifically includes:
mixing the extracted low-grade fluorite, analyzing the main content of raw material components and the content of calcium carbonate, and subpackaging into multiple bags with 20kg of each bag;
the step 7 specifically includes:
filtering the materials in the upgrading reaction kettle to obtain upgraded fluorite and calcium chloride mother liquor, and packaging the upgraded fluorite according to 20kg per bag.
Further, in the step 4, the amount of hydrochloric acid is 1.12-1.15 times the calcium carbonate content of the fluorite mixture.
Compared with the prior art, the embodiment of the invention has the advantages that:
the method for reducing carbon and improving quality of low-grade fluorite provided by the invention realizes the carbon reduction and quality improvement of low-grade fluorite, reduces the impurity content of fluorite concentrate, can obtain high-quality fluorite concentrate and calcium chloride dihydrate byproducts, and finally achieves the aims of reducing cost and improving efficiency, saving energy and reducing emission of enterprises.
Drawings
FIG. 1 is a diagram showing the steps of a method for upgrading low-grade fluorite according to an embodiment of the present invention;
FIG. 2 is a process flow diagram of a low-grade fluorite carbon reduction and upgrading method provided by an embodiment of the invention;
FIG. 3 is a flow chart of a flotation silicon reduction test in an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
For easy understanding, referring to fig. 1 and 2, fig. 1 is a diagram illustrating operation steps of a low-grade fluorite carbon-reduction and upgrading method according to an embodiment of the present invention; FIG. 2 is a process flow diagram of a low-grade fluorite carbon reduction and upgrading method provided by an embodiment of the invention.
The invention provides a low-grade fluorite carbon reduction and quality improvement method, which comprises the following steps:
step 1, mixing the extracted low-grade fluorite, analyzing the main content of raw material components and the content of calcium carbonate, and equally packaging into a plurality of bags;
the main content of the low-grade fluorite added in the experiment is 66% -69%, and the content of calcium carbonate is 15% -17.5%; after the amplification is carried out based on laboratory data, a certain quality of low-grade fluorite is adopted, whether the consumption of hydrochloric acid can meet the requirement is inspected and verified, and the final purpose is that the low-grade fluorite reaches 80%, and the calcium carbonate content is less than 1.2%.
Step 2, adding a certain amount of water into the quality improvement reaction kettle; the water to be added may be industrial grade water, tap water, etc.
Step 3, weighing quantitative anhydrous calcium chloride, adding the quantitative anhydrous calcium chloride into the quality-improving reaction kettle, and stirring the quality-improving reaction kettle;
the stirring time is 20 minutes, so that the anhydrous calcium chloride is uniformly distributed in the upgrading reaction kettle.
Step 4, opening an exhaust valve of the quality improvement reaction kettle, and adding a certain amount of hydrochloric acid into the quality improvement reaction kettle;
the hydrochloric acid in the four-layer platform hydrochloric acid buffer tank was added to the metering tank. After the completion, open the metering tank export and add hydrochloric acid into the upgrading reation kettle to realize the ration to hydrochloric acid and add.
Step 5, closing a hydrochloric acid discharge port valve, and stirring for 20 minutes to upgrade the liquid in the reaction kettle;
it should be noted that, closing the hydrochloric acid outlet valve can avoid volatilization of a part of the hydrochloric acid during the stirring process.
Step 6, adding the low-grade fluorite bag into a quality-improving reaction kettle and uniformly stirring;
the low-grade fluorite contains calcium carbonate molecules, and the calcium carbonate ions are converted into carbon dioxide and discharged through the reaction of hydrochloric acid, and the calcium ions and chloride ions are combined to form calcium chloride and are dissolved in water, so that the effect of reducing carbon and improving quality of the fluorite is achieved, and the chemical reaction formula is as follows:
CaCO 3 +2HCl→CaCl 2 +H 2 O+CO 2 ↑。
preferably, the stirring speed of the quality improving reaction kettle is 120-150r/min, so that the reaction kettle bottom is prevented from sinking into fine materials, and the outlet is prevented from being blocked; the defoaming rake can be added in the reaction kettle or the edge can be added around the reaction kettle, so that bubbles generated in the reaction can be effectively eliminated.
And 7, filtering materials in the upgrading reaction kettle to obtain upgraded fluorite and calcium chloride mother liquor.
After the filtration was completed, the main content, calcium carbonate content and moisture content of the fluorite material were analyzed. In the seven steps, the required experimental raw materials specifically comprise: 30% -31% of industrial hydrochloric acid, 90% of industrial slaked lime, 95% of anhydrous calcium chloride, industrial water, 66% -69% of low-grade fluorite with 15% -17.5% of calcium carbonate and the like;
step 8, refluxing a part of calcium chloride mother liquor to the upgrading reaction kettle through a recycling pipe, and adding the other part of calcium chloride mother liquor to the impurity removal reaction kettle;
after the filtering treatment in the step 7, fluorite particles are screened out, the calcium chloride mother liquor is stored in a mother liquor storage tank, and the mother liquor storage tank is communicated with the upgrading reaction kettle through a return pipe, so that part of the mother liquor can flow back to the upgrading reaction kettle to continuously participate in the reaction, and materials are saved; and adding the other part of calcium chloride mother liquor into a impurity removal reaction kettle for waiting for impurity removal.
Step 9, adding slaked lime into the impurity removal reaction kettle to enable impurities in the calcium chloride mother liquor to be settled;
the slaked lime added into the impurity removal reaction kettle utilizes the impurity removal function of the slaked lime to enable impurities in the calcium chloride mother liquor to settle, so that the pure calcium chloride mother liquor is obtained. Preferably, the specific parameters of the impurity removal of the calcium chloride mother solution are as follows: the reaction pH was controlled to 10-10.5 and the reaction time was 6 minutes. After the mother liquor impurity removal is completed, the solution in the impurity removal reaction kettle needs to be treated cleanly in time, so that the influence on the subsequent impurity removal effect of the reaction kettle is avoided.
Step 10, filtering the calcium chloride mother liquor in the impurity removal reaction kettle, and evaporating and crystallizing the filtered calcium chloride mother liquor to obtain a calcium chloride dihydrate byproduct, wherein the quality of the product is shown in table 1:
TABLE 1 by-product calcium chloride quality
The test apparatus of the present invention comprises: the test equipment is the test equipment commonly used in the prior art, and is not repeated here. The control parameters of the invention are as follows: the normal temperature and pressure are the theoretical amount of hydrochloric acid, the charging time is 30-40 minutes, and the reaction time is 60 minutes. The method for reducing carbon and improving quality of low-grade fluorite provided by the invention realizes the carbon reduction and improving quality of low-grade fluorite, reduces the impurity content of fluorite concentrate, can obtain high-quality fluorite concentrate, can obtain calcium chloride dihydrate byproduct, and finally achieves the aims of reducing cost and improving efficiency, saving energy and reducing emission of enterprises.
As a further improvement, the present invention further includes:
and 11, washing the extracted fluorite, adding the washed fluorite into a flotation tank, and adding quantitative water into the flotation tank. Specifically, the fluorite material obtained after filtering in the step 7 is washed and filtered, and the moisture content can reach about 12% of the moisture level of fluorite in the existing factory.
And step 12, adding a roughing collector, sodium silicate and sodium carbonate into the flotation tank for roughing test to obtain first concentrate and tailings. Specifically, the fluorite material after being treated is sub-packaged according to 300g of ore sample samples, then the collecting agent, the water glass (inhibitor) and the sodium carbonate (regulator) are subjected to medicament configuration according to the concentration required by flotation, quantitative water and the fluorite material are added into a flotation tank, the concentration of ore pulp and the flotation liquid level are ensured, and the prepared collecting agent and water glass are prepared. Adding sodium carbonate into a flotation tank for coarse flotation test to obtain first concentrate and tailings, thereby further realizing the quality improvement effect on fluorite.
As a further improvement, the low-grade fluorite carbon reduction and upgrading method provided by the embodiment of the invention further comprises the following steps: and 13, adding a water glass inhibitor into the first concentrate to perform a concentration test, so as to obtain a second concentrate and middlings. Specifically, after the tailings and the first concentrate are obtained through the reaction in the step 12, the tailings are extracted, water glass (inhibitor) is added into a flotation tank, a fine flotation test is continuously carried out on the first concentrate in the flotation tank, middlings and second fluorite concentrate with better quality are obtained, the main content of the second fluorite concentrate reaches 90%, the operation recovery rate reaches more than 85%, so that a flotation desilication test is completed, preferably, the pH value in the flotation tank in the flotation desilication process is controlled to be 10-10.5, the dosing mineralization time is controlled to be 3 minutes, and the flotation time is controlled to be 4 minutes. Referring to fig. 3, fig. 3 is a flow chart of a flotation silicon reduction test according to an embodiment of the invention.
As a further improvement, the step 2 of the low-grade fluorite carbon-reduction and quality-improvement method provided by the embodiment of the invention further comprises the following steps: the liquid level meter is adopted to meter water, and the water in the liquid level meter is added into the quality improvement reaction kettle, so that the adding amount of the water can be accurately controlled, and the accuracy of quality improvement reaction is ensured.
As a further improvement, step 4 of the present invention further comprises: the hydrochloric acid is added into the hydrochloric acid metering tank, the hydrochloric acid is measured, the exhaust valve of the quality improvement reaction kettle is opened, the hydrochloric acid is added into the quality improvement reaction kettle, the hydrochloric acid is metered by adopting the hydrochloric acid metering tank, the use amount of the hydrochloric acid can be accurately controlled, and the reaction precision is ensured. The consumption of the hydrochloric acid is calculated according to the multiple value of the content of the calcium carbonate in the fluorite, the repeated test shows that the consumption of the hydrochloric acid is 1.12-1.15 times of the content of the calcium carbonate in the fluorite, the feeding time of the low-grade fluorite bag is controlled to be 30-40 minutes after the step 5, and the reaction time is controlled to be 60 minutes.
As a further improvement, before the step of the invention, whether leakage exists in the hydrochloric acid storage tank and the hydrochloric acid metering tank or not is checked, a protective tool is worn, and an indoor tail gas fan is started, so that the personal safety of operators is ensured.
As a further improvement, the low-grade fluorite carbon-reduction upgrading method provided by the embodiment of the invention further comprises the following steps between the step 6 and the step 7: the 15% caustic soda is adopted to absorb the carbon dioxide generated by the reaction, so that the reaction speed can be calculated through the caustic soda on one hand, and the exhaust emission can be avoided on the other hand.
As a further improvement, after the step 3 of the invention, the quality-improving reaction kettle is required to stand for one night, and then the step 4 is executed, specifically, because the heat release amount is too large after anhydrous calcium chloride is mixed with water, if hydrochloric acid is added in a short time, the high temperature can volatilize a large amount of hydrochloric acid to influence the calculation of the addition amount of the hydrochloric acid, therefore, after the step 3 of the invention is completed, the temperature of the quality-improving reaction kettle is reduced to a normal temperature state by standing the quality-improving reaction kettle for one night, and then hydrochloric acid is added to ensure the accuracy of the reaction.
As a further improvement, the low-grade fluorite carbon-reduction and quality-improvement method provided by the invention comprises the following steps:
the step 1 specifically comprises the following steps: mixing the extracted low-grade fluorite, analyzing the main content of raw material components and the content of calcium carbonate, and subpackaging into multiple bags with 20kg of each bag;
the step 7 specifically comprises the following steps: filtering the materials in the upgrading reaction kettle to obtain upgraded fluorite and calcium chloride mother liquor, and packaging the upgraded fluorite according to 20kg per bag.
Specifically, before the reaction, 20kg of fluorite mixed materials are independently packaged in each package, in the reaction process, the number of packages of the added fluorite mixed materials is calculated, and after the reaction and the filtration are completed, 20kg of fluorite concentrate is packaged in each package again, so that the yield of the fluorite concentrate can be conveniently calculated through the comparison calculation of the number of packages. Preferably, in the reaction process, the number of the added fluorite mixed materials is 25, and after the material is added, the stirring and upgrading reaction kettle is stirred for 10 minutes to determine whether the PH value reaches the standard, and then stirring is carried out for 50 minutes.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The low-grade fluorite carbon reduction and upgrading method is characterized by comprising the following steps of:
step 1, mixing the extracted low-grade fluorite, analyzing the main content of raw material components and the content of calcium carbonate, and equally packaging into a plurality of bags;
step 2, adding a certain amount of water into the quality improvement reaction kettle;
step 3, weighing quantitative anhydrous calcium chloride, adding the quantitative anhydrous calcium chloride into the quality improvement reaction kettle, and stirring the quality improvement reaction kettle;
step 4, opening an exhaust valve of the quality improvement reaction kettle, and adding a certain amount of hydrochloric acid into the quality improvement reaction kettle;
step 5, closing a hydrochloric acid discharge port valve, and stirring the liquid in the upgrading reaction kettle for 20 minutes;
step 6, adding the low-grade fluorite bag into the upgrading reaction kettle and uniformly stirring;
step 7, filtering materials in the upgrading reaction kettle to obtain upgraded fluorite and calcium chloride mother liquor;
step 8, refluxing a part of calcium chloride mother liquor to the upgrading reaction kettle through a recycling pipe, and adding the other part of calcium chloride mother liquor to the impurity removal reaction kettle;
step 9, adding slaked lime into the impurity removal reaction kettle to enable impurities in the calcium chloride mother liquor to be settled;
and step 10, filtering the calcium chloride mother liquor in the impurity removal reaction kettle, and evaporating and crystallizing the filtered calcium chloride mother liquor to obtain a calcium chloride dihydrate byproduct.
2. The low-grade fluorite carbon-reducing upgrading process according to claim 1, wherein step 2 further comprises:
and (3) metering water by adopting a liquid level meter, and adding the water in the liquid level meter into the quality improvement reaction kettle.
3. The low-grade fluorite carbon-reducing upgrading process according to claim 1, wherein the step 4 further comprises:
and adding hydrochloric acid into a hydrochloric acid metering tank, measuring the hydrochloric acid, opening an exhaust valve of the quality improvement reaction kettle, and adding the hydrochloric acid into the quality improvement reaction kettle.
4. The method for reducing carbon and improving quality of low-grade fluorite according to claim 3, wherein before the step 4, checking whether leakage exists in the hydrochloric acid storage tank and the hydrochloric acid metering tank, wearing a protective tool, and starting an indoor tail gas fan.
5. The low-grade fluorite carbon-reducing and upgrading method according to claim 1, further comprising, between the step 6 and the step 7:
the carbon dioxide produced by the reaction was absorbed with 15% caustic soda.
6. The method according to claim 1, wherein after the step 3, the upgrading reaction vessel is left to stand for one night, and the step 4 is performed.
7. The method for reducing carbon and improving quality of low-grade fluorite according to claim 1, wherein,
the step 1 specifically includes:
mixing the extracted low-grade fluorite, analyzing the main content of raw material components and the content of calcium carbonate, and subpackaging into multiple bags with 20kg of each bag;
the step 7 specifically includes:
filtering the materials in the upgrading reaction kettle to obtain upgraded fluorite and calcium chloride mother liquor, and packaging the upgraded fluorite according to 20kg per bag.
8. The method for carbon reduction and upgrading of low-grade fluorite according to claim 1, wherein the amount of hydrochloric acid used in the step 4 is between 1.12 and 1.15 times the calcium carbonate content of the fluorite mixture.
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Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB319685A (en) * | 1928-09-26 | 1930-11-06 | Aluminium Ltd | Improvements in or relating to the concentration of fluorspar values from fluorspar ores |
| FR2239424A1 (en) * | 1973-07-30 | 1975-02-28 | Robert Dominique | Fluoride minerals isolated by two-stage flotation - using cationic cpds |
| US4227996A (en) * | 1979-03-22 | 1980-10-14 | Celanese Corporation | Flotation process for improving recovery of phosphates from ores |
| SU1090446A1 (en) * | 1982-05-31 | 1984-05-07 | Предприятие П/Я А-1997 | Method of dressing fluorite ores |
| GB8711094D0 (en) * | 1987-05-11 | 1987-06-17 | Ecc Int Ltd | Natural calcium carbonate ores |
| SU1727913A1 (en) * | 1990-05-03 | 1992-04-23 | Сибирский государственный проектный и научно-исследовательский институт цветной металлургии | Method of retreating fluorite concentrates |
| CN101913641A (en) * | 2010-08-31 | 2010-12-15 | 湖南有色氟化学科技发展有限公司 | Technology for purifying low-grade fluorite |
| CN105149105A (en) * | 2015-07-13 | 2015-12-16 | 中南大学 | Method for desulfurizing, refining and purifying fluorite concentrate |
| CN105174270A (en) * | 2015-10-15 | 2015-12-23 | 湖南有色氟化学科技发展有限公司 | Technology for preparing sodium fluorosilicate through fluoride-containing wastewater |
| CN108439452A (en) * | 2018-04-28 | 2018-08-24 | 湖南有色氟化学科技发展有限公司 | A kind of purifying technique of low-grade fluorite |
| CN108554642A (en) * | 2018-04-27 | 2018-09-21 | 长沙矿冶研究院有限责任公司 | The ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION |
| CN110013913A (en) * | 2019-05-15 | 2019-07-16 | 中南大学 | A kind of fluorite floatation process of gradation sizing walkthrough calcium carbonate |
| CN110292991A (en) * | 2019-07-03 | 2019-10-01 | 南华大学 | A kind of fluorite method for concentrating |
| CN111686925A (en) * | 2020-05-15 | 2020-09-22 | 中国地质科学院矿产综合利用研究所 | Mineral processing technology for recovering rare earth, fluorite and barite from low-grade rare earth ore |
| CN213967162U (en) * | 2020-12-21 | 2021-08-17 | 湖南旺华萤石矿业有限公司 | Device for improving recovery rate of fluorite fine powder |
| WO2021179814A1 (en) * | 2020-03-10 | 2021-09-16 | 中国地质科学院矿产综合利用研究所 | Separation method for low-grade fluorite barite paragenic ore rich in calcite |
| CN113560031A (en) * | 2021-08-09 | 2021-10-29 | 河南资环检测科技有限公司 | High-calcium fluorite flotation inhibitor and preparation method and application process thereof |
-
2021
- 2021-11-02 CN CN202111291095.3A patent/CN114100843B/en active Active
Patent Citations (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB319685A (en) * | 1928-09-26 | 1930-11-06 | Aluminium Ltd | Improvements in or relating to the concentration of fluorspar values from fluorspar ores |
| FR2239424A1 (en) * | 1973-07-30 | 1975-02-28 | Robert Dominique | Fluoride minerals isolated by two-stage flotation - using cationic cpds |
| US4227996A (en) * | 1979-03-22 | 1980-10-14 | Celanese Corporation | Flotation process for improving recovery of phosphates from ores |
| SU1090446A1 (en) * | 1982-05-31 | 1984-05-07 | Предприятие П/Я А-1997 | Method of dressing fluorite ores |
| GB8711094D0 (en) * | 1987-05-11 | 1987-06-17 | Ecc Int Ltd | Natural calcium carbonate ores |
| SU1727913A1 (en) * | 1990-05-03 | 1992-04-23 | Сибирский государственный проектный и научно-исследовательский институт цветной металлургии | Method of retreating fluorite concentrates |
| CN101913641A (en) * | 2010-08-31 | 2010-12-15 | 湖南有色氟化学科技发展有限公司 | Technology for purifying low-grade fluorite |
| CN105149105A (en) * | 2015-07-13 | 2015-12-16 | 中南大学 | Method for desulfurizing, refining and purifying fluorite concentrate |
| CN105174270A (en) * | 2015-10-15 | 2015-12-23 | 湖南有色氟化学科技发展有限公司 | Technology for preparing sodium fluorosilicate through fluoride-containing wastewater |
| CN108554642A (en) * | 2018-04-27 | 2018-09-21 | 长沙矿冶研究院有限责任公司 | The ore-dressing technique of fluorite-calcium carbonate FLOTATION SEPARATION |
| CN108439452A (en) * | 2018-04-28 | 2018-08-24 | 湖南有色氟化学科技发展有限公司 | A kind of purifying technique of low-grade fluorite |
| CN110013913A (en) * | 2019-05-15 | 2019-07-16 | 中南大学 | A kind of fluorite floatation process of gradation sizing walkthrough calcium carbonate |
| CN110292991A (en) * | 2019-07-03 | 2019-10-01 | 南华大学 | A kind of fluorite method for concentrating |
| WO2021179814A1 (en) * | 2020-03-10 | 2021-09-16 | 中国地质科学院矿产综合利用研究所 | Separation method for low-grade fluorite barite paragenic ore rich in calcite |
| CN111686925A (en) * | 2020-05-15 | 2020-09-22 | 中国地质科学院矿产综合利用研究所 | Mineral processing technology for recovering rare earth, fluorite and barite from low-grade rare earth ore |
| CN213967162U (en) * | 2020-12-21 | 2021-08-17 | 湖南旺华萤石矿业有限公司 | Device for improving recovery rate of fluorite fine powder |
| CN113560031A (en) * | 2021-08-09 | 2021-10-29 | 河南资环检测科技有限公司 | High-calcium fluorite flotation inhibitor and preparation method and application process thereof |
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