CN113333179A - Mixing and refining method considering large fluctuation of raw material grade - Google Patents
Mixing and refining method considering large fluctuation of raw material grade Download PDFInfo
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- CN113333179A CN113333179A CN202110520198.6A CN202110520198A CN113333179A CN 113333179 A CN113333179 A CN 113333179A CN 202110520198 A CN202110520198 A CN 202110520198A CN 113333179 A CN113333179 A CN 113333179A
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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
Abstract
The invention relates to the technical field of mineral processing engineering, and discloses a mixing and refining method considering large fluctuation of raw material grade, which comprises flotation machines 1-11 and a pneumatic valve A, B, C, D, E, and comprises the following steps: s1: the treatment capacity of raw ore is 450t/h-550t/h, and the raw ore mainly comprises two types: copper-iron ore and copper-zinc ore, wherein the copper grade of the copper-iron ore is 0.2-0.4%, and the iron grade is 25-40%; copper grade of the copper-zinc ore is 0.2% -0.4%, and zinc grade is 0.8% -5%; s2: when treating delafossite, the coarse concentrate enters a flotation machine 1-5 for first concentration, and the concentration foam enters a flotation machine 6-7 for second concentration. According to the invention, the existing equipment is fully utilized according to different raw materials, the investment of fixed assets is reduced, the idle and waste of the equipment are avoided, the flow is flexibly switched by utilizing the valve according to the change conditions of different raw material positions, and the concentrate grade and the recovery rate are improved.
Description
Technical Field
The invention relates to the technical field of mineral processing engineering, in particular to a mixing and refining method considering large fluctuation of raw material grade.
Background
For the problems of more mine ore bodies, larger difference of ore metal types among different ore bodies and the like, the traditional scheme is that ore blending treatment is carried out among different ore bodies according to a certain proportion, but some mines have different ore bodies such as copper iron ore, copper zinc ore and the like, the recovery rate of copper of the copper iron ore is higher, and the recovery rate of copper of the copper zinc ore is slightly lower due to the copper zinc separation process. After the ore blending treatment is adopted, the grade of zinc in the mixed ore is reduced, and meanwhile, the recovery rate of copper is reduced and the loss is larger because a copper-zinc separation process is uniformly adopted. Therefore, it is appropriate to adopt the separate selection method.
If the process is designed according to the grade of raw ore zinc, when the copper-iron ore is processed, the parameters of the flotation machine are large, a series of cost increases such as electricity charge are caused, when the process is designed according to the grade of copper, the grade change of zinc is large, when the grade of zinc is low, the flotation time of the process is sufficient, the grade and the recovery rate of the concentrate can reach design indexes, but when the grade of zinc is high, the flotation time of the process is insufficient, the grade and the recovery rate of the concentrate are difficult to guarantee, and the demands of people cannot be met.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a mixing concentration method considering the large fluctuation of the raw material grade, and the method solves the problems of large fluctuation of a concentration process and poor mineral separation technical index caused by the compatibility of a flotation system and large change of the raw material selecting grade when different mineral species exist.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme:
a mixing and concentrating method considering large fluctuation of raw material grade comprises flotation machines 1-11 and a pneumatic valve A, B, C, D, E, and comprises the following steps:
s1: the treatment capacity of raw ore is 450t/h-550t/h, and the raw ore mainly comprises two types: copper-iron ore and copper-zinc ore, wherein the copper grade of the copper-iron ore is 0.2-0.4%, and the iron grade is 25-40%; copper grade of the copper-zinc ore is 0.2% -0.4%, and zinc grade is 0.8% -5%;
s2: when treating the copper iron ore, the rough concentrate enters a flotation machine 1-5 for first concentration, the concentrated foam enters a flotation machine 6-7 for second concentration, the concentrated foam enters a flotation machine 8 for third concentration, finally, the copper concentrate flows out from a position D, and the flotation machine 9-11 performs flotation desulfurization on the iron concentrate;
s3: when the copper-zinc ore is treated, the desulfurization flotation machine 9-11 is idle because no iron concentrate exists, and the process is flexibly used.
As a still further aspect of the present invention, the flotation machine 1-11 is an inflatable flotation machine for thin film mass production in thin film mass production.
Further, in the S3, when the zinc grade beta Zn of the raw ore is less than or equal to 1%, a valve A, B, C is closed, a valve D is opened, the rough concentrate enters the flotation machines 1-5 for first concentration, the foam enters the flotation machines 6 and 7 for second concentration, the foam for second concentration enters the flotation machine 8 for third concentration, and the copper-zinc bulk concentrate flows out from the valve D.
On the basis of the scheme, in the S3, when the zinc grade of raw ore is more than 1% < beta Zn is less than or equal to 3%, a valve A, D is closed, a valve B, C is opened, the rough concentrate enters the flotation machines 1-5 for first concentration, the concentrated foam enters the flotation machines 6, 7 and 8 for second concentration, the concentrated foam flows into a pump box through a valve B, C, is conveyed to a stirring barrel through a pump, enters the flotation machines 9-11 for third concentration, and the copper-zinc mixed concentrate flows out from the position E.
Further, when the zinc grade beta Zn of the raw ore is more than 3%, closing a valve B, C, opening a valve A, D, wherein the opening degree of a valve A is 40-60%, feeding the rough concentrate into flotation machines 1-5 for first concentration, feeding 50% of foams into flotation machines 6 and 7 for second concentration, feeding the second-concentration foams into flotation machine 8 for third concentration, and discharging the copper-zinc bulk concentrate from a valve D; and the other 50 percent of foam flows into a pump box through a valve A, is conveyed to a stirring barrel through a pump, enters a flotation machine 9-11 for second concentration, and the copper-zinc bulk concentrate flows out from the position E.
(III) advantageous effects
Compared with the prior art, the invention provides a mixing and refining method considering the large fluctuation of the raw material grade, and the method has the following beneficial effects:
1. according to the invention, the existing equipment is fully utilized according to different raw materials, the investment of fixed assets is reduced, and the idle and waste of the equipment are avoided.
2. The invention utilizes the valve to flexibly switch the flow according to the change conditions of different raw material levels, thereby improving the concentrate grade and the recovery rate.
3. The bottom flow of the flotation machine 11 returns to the roughing foam box, thereby avoiding the back channeling of metal and further improving the recovery rate.
Drawings
FIG. 1 is a schematic flow structure diagram of a mixing and refining method taking account of large fluctuation of raw material grade 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. 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.
Example 1
Referring to fig. 1, a method for mixing and concentrating with large fluctuation of raw material grade, comprising flotation machines 1-11 and pneumatic valves A, B, C, D, E, comprises the following steps:
s1: the processing capacity of raw ore is 450t/h, the copper grade of the copper-iron ore is 0.2%, the iron grade is 25%, the copper grade of the copper-zinc ore is 0.2%, and the zinc grade is 1%, according to the difference of raw materials, the existing equipment is fully utilized, the investment of fixed assets is reduced, and the idle and waste of the equipment are avoided;
s2: when treating delafossite: the copper rough concentrate enters a flotation machine 1-5 for first concentration, the concentrated foam enters a flotation machine 6-7 for second concentration, the concentrated foam enters a flotation machine 8 for third concentration, finally, the copper concentrate flows out from a position D, the magnetic iron rough concentrate enters a flotation machine 9-11 for flotation and desulfurization to obtain iron concentrate, the bottom flow of the flotation machine 11 returns to a rough concentration foam box, so that metal 'backward channeling' is avoided, and the recovery rate is further improved;
s3: when treating copper-zinc ores: the valve A, B, C is closed, the valve D is opened, the rough concentrate enters the flotation machines 1-5 for first concentration, the foam enters the flotation machines 6 and 7 for second concentration, the foam for second concentration enters the flotation machine 8 for third concentration, the copper-zinc bulk concentrate flows out from the valve D, and the valve is utilized to flexibly switch the flow according to the change conditions of different raw material levels, so that the concentrate grade and the recovery rate are improved.
It should be noted that flotation machines 1-11 are pneumatic flotation machines with a length of 30 m.
Example 2
Referring to fig. 1, a method for mixing and concentrating with large fluctuation of raw material grade, comprising flotation machines 1-11 and pneumatic valves A, B, C, D, E, comprises the following steps:
s1: the processing capacity of raw ore is 500t/h, the copper grade of the copper-iron ore is 0.3%, the iron grade is 35%, the copper grade of the copper-zinc ore is 0.3%, and the zinc grade is 3%, according to the difference of raw materials, the existing equipment is fully utilized, the investment of fixed assets is reduced, and the idle and waste of the equipment are avoided;
s2: when treating delafossite: the copper rough concentrate enters a flotation machine 1-5 for first concentration, the concentrated foam enters a flotation machine 6-7 for second concentration, the concentrated foam enters a flotation machine 8 for third concentration, finally, the copper concentrate flows out from a position D, the magnetic iron rough concentrate enters a flotation machine 9-11 for flotation and desulfurization to obtain iron concentrate, the bottom flow of the flotation machine 11 returns to a rough concentration foam box, so that metal 'backward channeling' is avoided, and the recovery rate is further improved;
s3: when treating copper-zinc ores: closing the valve A, D, opening the valve B, C, enabling the rough concentrate to enter the flotation machine 1-5 for first concentration, enabling the foam to enter the flotation machines 6, 7 and 8 for second concentration, enabling the concentrated foam to flow into the pump box through the valve B, C, conveying the concentrated foam to the stirring barrel through the pump, enabling the concentrated foam to enter the flotation machines 9-11 for third concentration, enabling the copper-zinc bulk concentrate to flow out of the position E, flexibly switching the flow through the valve according to different raw material level changes, and improving the concentrate grade and the recovery rate.
It should be noted that flotation machines 1-11 are pneumatic flotation machines with a length of 30 m.
Example 3
Referring to fig. 1, a method for mixing and concentrating with large fluctuation of raw material grade, comprising flotation machines 1-11 and pneumatic valves A, B, C, D, E, comprises the following steps:
s1: the processing capacity of raw ore is 550t/h, the copper grade of the copper-iron ore is 0.4%, the iron grade is 40%, the copper grade of the copper-zinc ore is 0.4%, and the zinc grade is 5%, according to the difference of raw materials, the existing equipment is fully utilized, the investment of fixed assets is reduced, and the idle and waste of the equipment are avoided;
s2: when treating delafossite: the copper rough concentrate enters a flotation machine 1-5 for first concentration, the concentrated foam enters a flotation machine 6-7 for second concentration, the concentrated foam enters a flotation machine 8 for third concentration, finally, the copper concentrate flows out from a position D, the magnetic iron rough concentrate enters a flotation machine 9-11 for flotation and desulfurization to obtain iron concentrate, the bottom flow of the flotation machine 11 returns to a rough concentration foam box, so that metal 'backward channeling' is avoided, and the recovery rate is further improved;
s3: when treating copper-zinc ores: closing the valve B, C, opening a valve A, D, wherein the opening degree of the valve A is 40-60%, the rough concentrate enters the flotation machine 1-5 for first concentration, 50% of foam enters the flotation machines 6 and 7 for second concentration, the second-time concentration foam enters the flotation machine 8 for third concentration, the copper-zinc mixed concentrate flows out from the valve D, the other 50% of foam flows into the pump box through the valve A, is conveyed to the stirring barrel through the pump, enters the flotation machines 9-11 for second concentration, and the copper-zinc mixed concentrate flows out from the position E.
It should be noted that flotation machines 1-11 are pneumatic flotation machines with a length of 30 m.
Table one is the final index data of each example
In the description herein, it is noted that relational terms such as first and second, and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
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 (5)
1. A mixing and concentrating method considering large fluctuation of raw material grade comprises flotation machines 1-11 and a pneumatic valve A, B, C, D, E, and is characterized by comprising the following steps:
s1: the treatment capacity of raw ore is 450t/h-550t/h, and the raw ore mainly comprises two types: copper-iron ore and copper-zinc ore, wherein the copper grade of the copper-iron ore is 0.2-0.4%, and the iron grade is 25-40%; copper grade of the copper-zinc ore is 0.2% -0.4%, and zinc grade is 0.8% -5%;
s2: when treating the copper iron ore, the rough concentrate enters a flotation machine 1-5 for first concentration, the concentrated foam enters a flotation machine 6-7 for second concentration, the concentrated foam enters a flotation machine 8 for third concentration, finally, the copper concentrate flows out from a position D, and the flotation machine 9-11 performs flotation desulfurization on the iron concentrate;
s3: when the copper-zinc ore is treated, the desulfurization flotation machine 9-11 is idle because no iron concentrate exists, and the process is flexibly used.
2. The method according to claim 1, wherein the flotation machine 1-11 is an inflatable 30 m-ethanol flotation machine.
3. The mix concentration method considering the large fluctuation of the raw material grade according to claim 1, characterized in that in S3, when the zinc grade β Zn of the raw ore is less than or equal to 1%, the valve A, B, C is closed, the valve D is opened, the rough concentrate enters the flotation machines 1-5 for the first concentration, the froth enters the flotation machines 6, 7 for the second concentration, the froth for the second concentration enters the flotation machine 8 for the third concentration, and the copper-zinc mixed concentrate flows out from the valve D.
4. The mixed concentration method considering the large fluctuation of the raw material grade according to claim 1, characterized in that in S3, when the raw ore zinc grade is 1% < beta Zn < 3%, the valve A, D is closed, the valve B, C is opened, the rough concentrate enters the flotation machines 1-5 for the first concentration, the concentration foam enters the flotation machines 6, 7 and 8 for the second concentration, the concentration foam flows into the pump box through the valve B, C, is conveyed to the stirring barrel through the pump, enters the flotation machines 9-11 for the third concentration, and the copper-zinc mixed concentrate flows out from the position E.
5. The method of claim 1, wherein when the zinc grade β Zn of the raw ore is greater than 3%, the valve B, C is closed, the valve A, D is opened, the opening degree of the valve a is 40-60%, the rough concentrate enters the flotation machines 1-5 for first concentration, 50% of the froth enters the flotation machines 6, 7 for second concentration, the second-concentration froth enters the flotation machine 8 for third concentration, and the copper-zinc bulk concentrate flows out of the valve D; and the other 50 percent of foam flows into a pump box through a valve A, is conveyed to a stirring barrel through a pump, enters a flotation machine 9-11 for second concentration, and the copper-zinc bulk concentrate flows out from the position E.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008067733A1 (en) * | 2006-12-08 | 2008-06-12 | Bin Li | Method of cyclone type flotation for slurry and cyclone type flotation column and device therefor |
| CN101450335A (en) * | 2007-11-30 | 2009-06-10 | 灵宝市金源矿业有限责任公司 | Copper-sulfur separation floatation method |
| RU2393020C1 (en) * | 2009-04-08 | 2010-06-27 | Государственное образовательное учреждение высшего профессионального образования Читинский государственный университет (ЧитГУ) | Flow line for separation of rich components out of ash-slag wastes |
| CN102698875A (en) * | 2012-06-15 | 2012-10-03 | 紫金矿业集团股份有限公司 | Ore dressing technology for complex copper-zinc-sulfur multi-metal ore |
| CN104209174A (en) * | 2014-08-13 | 2014-12-17 | 铜陵有色金属集团股份有限公司 | Multifunctional grinding and floating production line |
| CN106733218A (en) * | 2016-12-27 | 2017-05-31 | 江西稀有金属钨业控股集团有限公司 | A kind of device for improving white tungsten fine ore grade |
| CN106799309A (en) * | 2017-01-22 | 2017-06-06 | 彝良驰宏矿业有限公司 | A kind of method for floating of high efficiency zincblende |
| CN108672104A (en) * | 2018-08-01 | 2018-10-19 | 中冶北方（大连）工程技术有限公司 | A kind of adjustable reverse flotation system of iron concentrate grade |
| CN109433427A (en) * | 2018-11-14 | 2019-03-08 | 铜陵有色金属集团股份有限公司 | The Multifunctional mill floating life producing line and its method for floating of complicated hard-processing copper sulfur ores |
| CN110523542A (en) * | 2019-06-25 | 2019-12-03 | 赤峰山金红岭有色矿业有限责任公司 | A kind of low-grade short route concentrate promotion beneficiation method |
-
2021
- 2021-05-13 CN CN202110520198.6A patent/CN113333179A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008067733A1 (en) * | 2006-12-08 | 2008-06-12 | Bin Li | Method of cyclone type flotation for slurry and cyclone type flotation column and device therefor |
| CN101450335A (en) * | 2007-11-30 | 2009-06-10 | 灵宝市金源矿业有限责任公司 | Copper-sulfur separation floatation method |
| RU2393020C1 (en) * | 2009-04-08 | 2010-06-27 | Государственное образовательное учреждение высшего профессионального образования Читинский государственный университет (ЧитГУ) | Flow line for separation of rich components out of ash-slag wastes |
| CN102698875A (en) * | 2012-06-15 | 2012-10-03 | 紫金矿业集团股份有限公司 | Ore dressing technology for complex copper-zinc-sulfur multi-metal ore |
| CN104209174A (en) * | 2014-08-13 | 2014-12-17 | 铜陵有色金属集团股份有限公司 | Multifunctional grinding and floating production line |
| CN106733218A (en) * | 2016-12-27 | 2017-05-31 | 江西稀有金属钨业控股集团有限公司 | A kind of device for improving white tungsten fine ore grade |
| CN106799309A (en) * | 2017-01-22 | 2017-06-06 | 彝良驰宏矿业有限公司 | A kind of method for floating of high efficiency zincblende |
| CN108672104A (en) * | 2018-08-01 | 2018-10-19 | 中冶北方（大连）工程技术有限公司 | A kind of adjustable reverse flotation system of iron concentrate grade |
| CN109433427A (en) * | 2018-11-14 | 2019-03-08 | 铜陵有色金属集团股份有限公司 | The Multifunctional mill floating life producing line and its method for floating of complicated hard-processing copper sulfur ores |
| CN110523542A (en) * | 2019-06-25 | 2019-12-03 | 赤峰山金红岭有色矿业有限责任公司 | A kind of low-grade short route concentrate promotion beneficiation method |
Non-Patent Citations (1)
| Title |
|---|
| 陈强: "大宝山铜选厂技改实践", 《南方金属》, no. 136, 29 February 2004 (2004-02-29), pages 31 - 33 * |
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