CN110624698A - Method for recovering pyrrhotite from magnetic concentrate - Google Patents
Method for recovering pyrrhotite from magnetic concentrate Download PDFInfo
- Publication number
- CN110624698A CN110624698A CN201910751990.5A CN201910751990A CN110624698A CN 110624698 A CN110624698 A CN 110624698A CN 201910751990 A CN201910751990 A CN 201910751990A CN 110624698 A CN110624698 A CN 110624698A
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- Prior art keywords
- pyrrhotite
- acid
- concentrate
- recovering
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/004—Organic compounds
- B03D1/016—Macromolecular 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
- B03D1/00—Flotation
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- 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
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- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention provides a method for recovering pyrrhotite from magnetic concentrate. After grinding the raw ore, adding an activating agent and a collecting agent for mixed separation, and separating and floating to obtain pyrrhotite concentrate and iron concentrate ore dressing. The activator adopts underground acid water to replace the traditional activators, namely oxalic acid, nitric acid, sulfuric acid and hydrochloric acid. The effective components of the underground acid water for activating the pyrrhotite are as follows: mn2+、H+、Cu2+、Fe2+、Fe3+Ions. The using amount of the downhole acid water is 60 kg/T. The present invention employs the replacement of the traditional activator by downhole acid waterOxalic acid, nitric acid, sulfuric acid and hydrochloric acid, the activation effect on pyrrhotite is improved, the floatability of pyrrhotite is enhanced, the sulfur content of iron ore concentrate can be reduced to below 2.0 percent after flotation separation, the grade of the iron ore concentrate is 52 percent, the manganese content is 9 percent, the pyrrhotite concentrate is sold to a manganese smelting plant, and the economic value is greatly improved. The method is suitable for being used as a method for recovering pyrrhotite from magnetic concentrate.
Description
Technical Field
The invention relates to a recovery method in the field of mineral separation, in particular to an activating agent in pyrrhotite recovery.
Background
Eight mining industry shares company is a polymetallic mine, which was built in 1968, and the recovered valuable metals, such as copper, lead, zinc, sulfur and silver, were recovered by a flotation-separation method. Part of recoverable valuable metals such as iron, manganese, sulfur and silver are still contained in the tailings. The company starts the comprehensive recovery work of tailings in 2015, and products comprise iron ore concentrate, manganese ore concentrate, sulfur ore concentrate and silver ore concentrate. Because the natural magnetism of magnetite and pyrrhotite is similar, the iron concentrate is a mixture of magnetite and pyrrhotite. The grade of iron is about 49%, manganese content is about 8%, and sulfur content is about 6.4% (the sulfur content belongs to the impurities contained in iron ore concentrate) and seriously exceeds the standard. The iron ore concentrate has small market range and low price, and each ton of the iron ore concentrate only sells about 90 yuan.
The molecular formula of pyrrhotite is Fe (1-x) S, wherein x = 0-0.17, and in order to reduce the sulfur content in the iron ore concentrate, the pyrrhotite in the iron ore concentrate is separated by a flotation method, so that the purpose of reducing the sulfur content in the iron ore concentrate is achieved. In the traditional pyrrhotite flotation, oxalic acid, sulfuric acid, hydrochloric acid, nitric acid and the like are used for activation, the dosage is 60kg/T, the activation effect is poor, after flotation separation, the iron ore concentrate still contains about 4.5 percent of sulfur, and mineral resources are urgently needed to be effectively recovered.
Disclosure of Invention
In order to improve the activation effect on pyrrhotite and enhance the floatability of pyrrhotite, the invention provides a method for recovering pyrrhotite from magnetic concentrate. According to the method, the underground acid water is used for replacing the traditional activating agents of oxalic acid, nitric acid, sulfuric acid and hydrochloric acid, so that the activating effect on pyrrhotite is improved, the floatability of pyrrhotite is enhanced, and the technical problem of reducing the sulfur content of iron ore concentrate in pyrrhotite flotation recovery is solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
after grinding the raw ore, adding an activating agent and a collecting agent for mixed separation, and separating and floating to obtain pyrrhotite concentrate and iron concentrate ore dressing.
Furthermore, the activating agent adopts underground acid water to replace the traditional activating agents such as oxalic acid, nitric acid, sulfuric acid and hydrochloric acid.
Further, the effective components for activating pyrrhotite in the underground acid water are as follows: mn2+、H+、Cu2+、Fe2+、Fe3+Ions.
Further, the using amount of the downhole acid water is 60 kg/T.
Furthermore, the collecting agents are butter and 2# oil, and the using amount of the collecting agents is 80kg/T of the butter and 10kg/T of the 2# oil.
The method has the advantages that the underground acid water is adopted to replace the traditional activating agents of oxalic acid, nitric acid, sulfuric acid and hydrochloric acid, so that the activating effect on pyrrhotite is improved, the floatability of pyrrhotite is enhanced, the sulfur content of the iron ore concentrate can be reduced to be below 2.0 percent after flotation separation, the grade of the iron ore concentrate is 52 percent, the manganese content is 9 percent, the iron ore concentrate is sold to a manganese smelting plant, the selling price can be improved to 350 yuan/T, and the economic value is greatly improved. The method is suitable for being used as a method for recovering pyrrhotite from magnetic concentrate.
Drawings
FIG. 1 is a flow chart of the production process of the present invention.
In the figure, 1, raw ore, 2, activating agent, 3, collecting agent, 4, pyrrhotite concentrate and 5, iron concentrate.
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. 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. 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.
According to the figure, after grinding, the raw ore 1 is added with an activating agent 2 and a collecting agent 3 for mixed separation, and then the pyrrhotite concentrate 4 and the iron concentrate 5 are obtained through separation and flotation.
The activator adopts underground acid water to replace the traditional activators, namely oxalic acid, nitric acid, sulfuric acid and hydrochloric acid.
The effective components of the underground acid water for activating the pyrrhotite are as follows: mn2+、H+、Cu2+、Fe2+、Fe3+Ions.
The using amount of the downhole acid water is 60 kg/T.
The collecting agent is butter and 2# oil, and the using amount of the collecting agent is 80kg/T of the butter and 10kg/T of the 2# oil.
Example (b):
industrial tests prove that after underground acid water is used as an activator of pyrrhotite, the floatability of the pyrrhotite is greatly improved, the sulfur content in iron ore concentrate is reduced from 6.4 percent to below 2.0 percent, and the production condition is shown in Table 1
TABLE 1, 2019 production of report in 5 months
The working principle of the invention is as follows:
the underground acid water is used for replacing the traditional activating agents of oxalic acid, nitric acid, sulfuric acid and hydrochloric acid, so that the activation effect on pyrrhotite is improved, and the floatability of the pyrrhotite is enhanced. The effective components for activating the pyrrhotite in the underground acid water are as follows: mn2+、H+、Cu2+、Fe2 +、Fe3+Ions.
The invention has the characteristics that:
industrial tests prove that after underground acid water is used as an activator of pyrrhotite, the floatability of the pyrrhotite is greatly improved, and the sulfur content in iron ore concentrate is reduced from 6.4 percent to below 2.0 percent.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A method for recovering pyrrhotite from magnetic concentrate is characterized by comprising the following steps: after grinding the raw ore (1), adding an activating agent (2) and a collecting agent (3) for mixed separation, and separating and floating to obtain pyrrhotite concentrate (4) and iron concentrate (5).
2. The method for recovering pyrrhotite from magnetic concentrate as claimed in claim 1, characterized in that: the activator adopts underground acid water to replace the traditional activators, namely oxalic acid, nitric acid, sulfuric acid and hydrochloric acid.
3. The method for recovering pyrrhotite from magnetic concentrate as claimed in claim 1, characterized in that: the underground acid water has the function of activating pyrrhotiteThe effective components are as follows: mn2+、H+、Cu2+、Fe2+、Fe3+Ions.
4. The method for recovering pyrrhotite from magnetic concentrate as claimed in claim 1, characterized in that: the using amount of the downhole acid water is 60 kg/T.
5. The method for recovering pyrrhotite from magnetic concentrate as claimed in claim 1, characterized in that: the collecting agent is butter and 2# oil, and the using amount of the collecting agent is 80kg/T of the butter and 10kg/T of the 2# oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751990.5A CN110624698A (en) | 2019-08-15 | 2019-08-15 | Method for recovering pyrrhotite from magnetic concentrate |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910751990.5A CN110624698A (en) | 2019-08-15 | 2019-08-15 | Method for recovering pyrrhotite from magnetic concentrate |
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| CN110624698A true CN110624698A (en) | 2019-12-31 |
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| CN201910751990.5A Pending CN110624698A (en) | 2019-08-15 | 2019-08-15 | Method for recovering pyrrhotite from magnetic concentrate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744676A (en) * | 2020-07-02 | 2020-10-09 | 沈阳五寰工程技术有限公司 | Acid pretreatment-flotation method for high-sulfur magnetite concentrate desulfurization |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993004783A1 (en) * | 1991-08-28 | 1993-03-18 | Commonwealth Scientific And Industrial Research Organisation | Processing of ores |
| CN104069937A (en) * | 2014-05-16 | 2014-10-01 | 马钢集团设计研究院有限责任公司 | Ore dressing method for removing pyrrhotite from iron ore |
| CN105363564A (en) * | 2015-12-10 | 2016-03-02 | 内蒙古科技大学 | Desulfurization reagent for removing pyrrhotite in iron concentrate containing high sulphur by flotation method |
| CN106076647A (en) * | 2016-06-20 | 2016-11-09 | 武汉理工大学 | Utilize the method for magnetic iron ore in combination medicament activation and flotation iron ore concentrate |
| CN107199120A (en) * | 2017-07-27 | 2017-09-26 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method containing magnetic iron ore, the high-sulfur magnetic iron ore of pyrite |
-
2019
- 2019-08-15 CN CN201910751990.5A patent/CN110624698A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993004783A1 (en) * | 1991-08-28 | 1993-03-18 | Commonwealth Scientific And Industrial Research Organisation | Processing of ores |
| CN104069937A (en) * | 2014-05-16 | 2014-10-01 | 马钢集团设计研究院有限责任公司 | Ore dressing method for removing pyrrhotite from iron ore |
| CN105363564A (en) * | 2015-12-10 | 2016-03-02 | 内蒙古科技大学 | Desulfurization reagent for removing pyrrhotite in iron concentrate containing high sulphur by flotation method |
| CN106076647A (en) * | 2016-06-20 | 2016-11-09 | 武汉理工大学 | Utilize the method for magnetic iron ore in combination medicament activation and flotation iron ore concentrate |
| CN107199120A (en) * | 2017-07-27 | 2017-09-26 | 中钢集团马鞍山矿山研究院有限公司 | A kind of beneficiation method containing magnetic iron ore, the high-sulfur magnetic iron ore of pyrite |
Non-Patent Citations (3)
| Title |
|---|
| 李贺: "某铜矿选铜尾矿锌硫回收研究及生产实践", 《四川有色金属》 * |
| 王双玉: "磁黄铁矿型铜铁多金属矿选矿研究进展", 《矿产综合利用》 * |
| 陈引锋: "《矿井水文地质》", 31 August 2018 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111744676A (en) * | 2020-07-02 | 2020-10-09 | 沈阳五寰工程技术有限公司 | Acid pretreatment-flotation method for high-sulfur magnetite concentrate desulfurization |
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