CN112474058A - Method for sectionally using high-calcium and low-calcium water in scheelite flotation - Google Patents
Method for sectionally using high-calcium and low-calcium water in scheelite flotation Download PDFInfo
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- CN112474058A CN112474058A CN202011250532.2A CN202011250532A CN112474058A CN 112474058 A CN112474058 A CN 112474058A CN 202011250532 A CN202011250532 A CN 202011250532A CN 112474058 A CN112474058 A CN 112474058A
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- scheelite
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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
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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
- B03D1/002—Inorganic 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
- B03D2201/007—Modifying reagents for adjusting pH or conductivity
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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
The invention discloses a method for using high-calcium and low-calcium water in scheelite flotation in sections, which relates to the technical field of the application of high-calcium ion water in scheelite flotation, and specifically comprises the following steps: s1, roughing scheelite; s2, fine selection of scheelite; and S3, scavenging scheelite. The method for the high-calcium water quality and low-calcium water quality segmentation for scheelite flotation is used for solving the problem of scheelite flotation recovery under the high-calcium ion water quality condition, reducing the influence of the high-calcium ion water quality on scheelite flotation indexes, providing reference significance for the same type of water quality flotation, providing reference for the phenomenon of groove falling when fatty acid flotation is adopted for high-calcium mine ores through the method, finding the nature of problems in sorting indexes, and facilitating finding and processing problems, thereby realizing the maximization of economic value.
Description
Technical Field
The invention relates to the technical field of scheelite flotation by using high calcium ion water quality, in particular to a method for sectionally using high and low calcium water quality in scheelite flotation.
Background
Tungsten belongs to rare elements and comprises ferrotungsten concentrate and calcium tungstate concentrate, the content of tungsten in the earth crust is only 0.8%, the tungsten reserves in China account for about 55% of the total reserves in the world, and the tungsten reserves are the top. The beneficiation process of tungsten concentrate is generally to produce the wolframite concentrate or scheelite concentrate which reaches the national standard by the technological processes of crushing, ball milling, gravity separation (mainly including table concentrator and jigging), flotation, electric separation, magnetic separation and the like of wolframite (wolframite or scheelite), wherein the content of the main component tungsten trioxide of the wolframite concentrate can reach more than 65%.
The tungsten concentrate reacts with a chemical reagent to generate water-soluble tungstate or insoluble tungstic acid, and the water-soluble tungstate or insoluble tungstic acid is separated from most of impurities, and is an important component of a tungsten metallurgy process. The decomposition method of tungsten concentrate is classified into an alkali decomposition method and an acid decomposition method according to the chemical reagent (decomposition agent) used. The former includes sintering decomposition of tungsten concentrate sodium carbonate, caustic soda liquid decomposition of black tungsten concentrate, hydraulic pressure digestion decomposition of scheelite sodium carbonate, and the latter includes hydrochloric acid decomposition of scheelite concentrate. Decomposing the alkali to obtain a crude sodium tungstate solution and filtering residues. The crude sodium tungstate solution still contains more harmful impurities, and then the tungsten solution is purified and removed. In order to recover valuable metals from decomposed filter residues and eliminate pollution, comprehensive utilization of wolframite alkali decomposed residues is required. And (3) decomposing the tungsten concentrate by hydrochloric acid to obtain crude tungstic acid and a waste hydrochloric acid solution. The crude tungstic acid is usually dissolved in ammonia or sodium hydroxide solution to obtain ammonium tungstate solution or sodium tungstate solution. This solution is sometimes also subjected to a purification.
The scheelite normal temperature rough concentration is usually carried out by adopting sodium carbonate or caustic soda to adjust the pH value, using water glass as an inhibitor and fatty acid as a collecting agent; the normal temperature concentration usually adopts water glass as an inhibitor. Under the condition of high-calcium ion water quality, fatty acid is consumed by calcium ions to cause normal-temperature concentration to drop out of a tank, the on-site solution is usually adjusted by increasing the rough concentration foam scraping amount or reducing the concentration inhibitor dosage, so that the concentrate grade or recovery rate of a rough concentration section is low, and the phenomenon is mainly caused by the defect that fatty acid is consumed due to the reaction of the calcium ions in water and the fatty acid.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for sectionally using high-calcium and low-calcium water in scheelite flotation, which solves the problem of normal-temperature refining tank drop caused by fatty acid consumption of calcium ions in the tungsten ore normal-temperature flotation under the condition of high-calcium ion water quality in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme that the method comprises the following steps:
s1, scheelite roughing: performing scheelite roughing operation, namely adopting high-calcium ion water as test water, using sodium carbonate for size mixing, and performing scheelite roughing on the ore pulp added with an inhibitor and a collecting agent to obtain scheelite roughing concentrate and roughing tailings;
s2, scheelite concentration: the scheelite concentration adopts low-calcium ion water as supplementary water, the concentration is carried out for three times to obtain the final tungsten rough concentrate, and tailings obtained by the three times of concentration are tungsten middlings;
s3, scheelite scavenging: and (3) scavenging the scheelite by adopting high-calcium ion water as supplementary water, wherein the scavenging times are twice, and the two scavenging concentrates are combined into tungsten scavenging concentrates and finally the tungsten tailings.
Optionally, in the step S1, 1500g/t NaOH and Na are added into the scheelite in the rough concentration2SiO35000g/t、TY-5 450g/t。
Optionally, in the step S1, in the scheelite rough selection, the content of high calcium ions is 96.5 ppm.
Optionally, in the step S2, the scheelite concentration adopts low-calcium ion water as supplementary water, and the water glass consumption in the third concentration is 500 g/t.
Optionally, in the step S3, the amount of the collecting agent added in the scheelite scavenging twice is 100g/t, and the replenishing water is high calcium ion water.
The invention provides a method for using high-calcium and low-calcium water in scheelite flotation in sections, which has the following beneficial effects:
according to the invention, high-calcium ion water and low-calcium ion water are used in a segmented manner, so that a large amount of high-calcium ion water in a mine system is digested, the cost of using clear water is reduced, the environmental protection treatment is facilitated, and the influence of single high-calcium ion water quality on the scheelite flotation index is reduced.
The positive effects are as follows: can appear falling the groove phenomenon and provide the reference when adopting fatty acid flotation to high-calcium mine ore through this patent, wherein, high-calcium mine ore dissolves and contains a large amount of calcium ions in aqueous to and find the selection index nature of appearing the problem, be convenient for look for the processing problem countermeasure, thereby realize economic value maximize.
Drawings
FIG. 1 is a schematic view of a tungsten ore process according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in 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.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Embodiment 1
Referring to fig. 1, the present invention provides a technical solution: adopting clean water in a laboratory to carry out scheelite flotation, comprising the following steps:
s1, scheelite roughing: performing scheelite roughing operation, namely adopting clean water in a laboratory as test water, using soda ash for size mixing, and performing scheelite roughing on the ore pulp added with an inhibitor and a collecting agent to obtain scheelite roughing concentrate and roughing tailings;
s2, scheelite concentration: the scheelite concentration adopts clean water in a laboratory as supplementary water, the concentration is carried out for three times to obtain final tungsten rough concentrate, and tailings obtained by the three times of concentration are tungsten middlings;
s3, scheelite scavenging: and (3) scavenging the scheelite by adopting clean water in a laboratory as supplementary water, wherein the scavenging times are twice, and the two scavenging concentrates are combined into tungsten scavenging concentrates and finally the tungsten tailings.
In the invention: step S1, adding 1500g/t NaOH and Na into scheelite for roughing2SiO35000g/t、TY-5 450g/t。
In the invention: and step S2, the using amount of the water glass is 500g/t for the third selection.
In the invention: and step S3, the dosages of the collecting agent added in the two scavenging processes are both 100 g/t.
The steps are as follows: the full-flow open-circuit test is carried out under the conditions that the tungsten grade of raw ore is 0.56 percent and the calcium carbonate is 45.13 percent, and the tungsten rough concentrate with the tungsten grade of 2.80 percent and the recovery rate of 73.23 percent can be obtained by adopting clean water in a laboratory.
Example II
Adopting high-calcium water to carry out scheelite flotation, comprising the following steps:
s1, scheelite roughing: performing scheelite roughing operation, namely performing size mixing by using high-calcium water as test water and using sodium carbonate, and performing scheelite roughing on the ore pulp added with an inhibitor and a collecting agent to obtain scheelite roughing concentrate and roughing tailings;
s2, scheelite concentration: the scheelite concentration adopts high calcium water as supplementary water, the concentration is carried out for three times to obtain the final tungsten rough concentrate, and tailings obtained by the three times of concentration are tungsten middlings;
s3, scheelite scavenging: and (3) scavenging the scheelite by adopting high-calcium water as supplementary water, wherein the scavenging times are twice, and the two scavenging concentrates are combined into tungsten scavenging concentrates and finally the tungsten tailings.
In the invention: step S1, adding 1500g/t NaOH and Na into scheelite for roughing2SiO35000g/t、TY-5 450g/t。
In the invention: and step S1, roughly selecting scheelite, wherein the content of high calcium ions is 96.5 ppm.
In the invention: and step S2, the using amount of the water glass is 500g/t for the third selection.
In the invention: and step S3, the dosages of the collecting agent added in the two scavenging processes are both 100 g/t.
The steps are as follows: the tungsten rough concentrate with the tungsten grade of 2.11 percent and the recovery rate of 49.13 percent can be obtained by adopting high-calcium ionized water.
Example three
The method is used in sections when high-calcium and low-calcium water is adopted for scheelite flotation, and comprises the following steps:
s1, scheelite roughing: performing scheelite roughing operation, namely performing size mixing by using high-calcium water as test water and using sodium carbonate, and performing scheelite roughing on the ore pulp added with an inhibitor and a collecting agent to obtain scheelite roughing concentrate and roughing tailings;
s2, scheelite concentration: the scheelite concentration adopts low-calcium water as supplementary water, the concentration is carried out for three times to obtain final tungsten rough concentrate, and tailings obtained by the three times of concentration are tungsten middlings;
s3, scheelite scavenging: and (3) scavenging the scheelite by adopting high-calcium water as supplementary water, wherein the scavenging times are twice, and the two scavenging concentrates are combined into tungsten scavenging concentrates and finally the tungsten tailings.
In the invention: step S1, adding 1500g/t NaOH and Na into scheelite for roughing2SiO35000g/t、TY-5 450g/t。
In the invention: and step S1, roughly selecting scheelite, wherein the content of high calcium ions is 96.5 ppm.
In the invention: and step S2, the using amount of the water glass is 500g/t for the third selection.
In the invention: and step S3, the dosages of the collecting agent added in the two scavenging processes are both 100 g/t.
The steps are as follows: when the high-calcium and low-calcium water sections are used for scheelite flotation, tungsten rough concentrate with tungsten grade of 1.90% and recovery rate of 66.83% can be obtained.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (5)
1. A method for using high-calcium and low-calcium water in scheelite flotation in sections is characterized by comprising the following steps:
s1, scheelite roughing: performing scheelite roughing operation, namely adopting high-calcium ion water as test water, using sodium carbonate for size mixing, and performing scheelite roughing on the ore pulp added with an inhibitor and a collecting agent to obtain scheelite roughing concentrate and roughing tailings;
s2, scheelite concentration: the scheelite concentration adopts low-calcium ion water as supplementary water, the concentration is carried out for three times to obtain the final tungsten rough concentrate, and tailings obtained by the three times of concentration are tungsten middlings;
s3, scheelite scavenging: and (3) scavenging the scheelite by adopting high-calcium ion water as supplementary water, wherein the scavenging times are twice, and the two scavenging concentrates are combined into tungsten scavenging concentrates and finally the tungsten tailings.
2. The method for the sectional use of the high-calcium and low-calcium water in the scheelite flotation according to claim 1, which is characterized in that: and S1, roughing the scheelite with the calcium ion content of 96.5 ppm.
3. The method for the sectional use of the high-calcium and low-calcium water in the scheelite flotation according to claim 1, which is characterized in that: step S1, adding 1500g/t NaOH and Na into scheelite for roughing2SiO3 5000g/t、TY-5 450g/t。
4. The method for the sectional use of the high-calcium and low-calcium water in the scheelite flotation according to claim 1, which is characterized in that: and S2, selecting scheelite by using low-calcium ion water as supplementary water, wherein the water glass dosage for the third selection is 500 g/t.
5. The method for the sectional use of the high-calcium and low-calcium water in the scheelite flotation according to claim 1, which is characterized in that: and S3, adding the collecting agent by 100g/t in the scheelite twice scavenging process, and adopting high-calcium ion water as the replenishing water.
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| CN202011250532.2A CN112474058A (en) | 2020-11-10 | 2020-11-10 | Method for sectionally using high-calcium and low-calcium water in scheelite flotation |
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| CN202011250532.2A CN112474058A (en) | 2020-11-10 | 2020-11-10 | Method for sectionally using high-calcium and low-calcium water in scheelite flotation |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054442A (en) * | 1976-02-23 | 1977-10-18 | Union Carbide Corporation | Method for recovering scheelite from tungsten ores by flotation |
| CN105254069A (en) * | 2015-11-03 | 2016-01-20 | 南京大学 | Wolframine beneficiation wastewater treatment process |
| CN110773326A (en) * | 2019-11-08 | 2020-02-11 | 湖南辰州矿业有限责任公司 | Method for recycling underground water to scheelite flotation |
-
2020
- 2020-11-10 CN CN202011250532.2A patent/CN112474058A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054442A (en) * | 1976-02-23 | 1977-10-18 | Union Carbide Corporation | Method for recovering scheelite from tungsten ores by flotation |
| CN105254069A (en) * | 2015-11-03 | 2016-01-20 | 南京大学 | Wolframine beneficiation wastewater treatment process |
| CN110773326A (en) * | 2019-11-08 | 2020-02-11 | 湖南辰州矿业有限责任公司 | Method for recycling underground water to scheelite flotation |
Non-Patent Citations (2)
| Title |
|---|
| 周晓彤等: "钨浮选尾矿水对白钨矿浮选影响及新工艺研究", 《中国钨业》 * |
| 马驰等: "石膏对夜长坪钼钨矿选矿效果的影响研究", 《中国矿业》 * |
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