CN110711647A - Flotation method for high-grade lean sulfide gold-bearing ore - Google Patents
Flotation method for high-grade lean sulfide gold-bearing ore Download PDFInfo
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- CN110711647A CN110711647A CN201911092835.3A CN201911092835A CN110711647A CN 110711647 A CN110711647 A CN 110711647A CN 201911092835 A CN201911092835 A CN 201911092835A CN 110711647 A CN110711647 A CN 110711647A
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- concentrate
- tailings
- concentration
- gold
- 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
- B03D1/02—Froth-flotation processes
-
- 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
-
- 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
- B03D1/087—Subsequent treatment of concentrated product of the sediment, e.g. regrinding
Abstract
The invention provides a flotation method for high-grade lean sulfide gold-bearing ore, belonging to the technical field of mineral processing. Adding a sulfide mineral collecting agent and a foaming agent into the ore pulp, performing primary roughing operation after size mixing to obtain a first rough concentrate, and performing secondary roughing operation on tailings; performing secondary roughing operation to obtain coarse concentrate II, performing scavenging operation on the tailings, returning the concentrate of each scavenging operation to the previous sorting operation, and performing next sorting operation on the tailings to finally produce flotation tailings; the coarse concentrate II enters the concentration operation, tailings of each concentration operation return to the last separation operation in sequence, and the concentrate enters the next separation operation to finally produce the concentrated concentrate; and the first rough concentrate enters the later stage of the concentration operation or is directly combined with the concentrated concentrate produced by the concentration operation to form final flotation concentrate. The invention is beneficial to the timely sorting of the single and the continuous gold minerals, reduces the treatment capacity of the sorting operation, ensures that the grade of the final concentrate is stable in a reasonable range, and improves the mineral separation recovery rate.
Description
Technical Field
The invention belongs to the technical field of mineral processing, and particularly relates to a flotation method for high-grade lean sulfide gold-bearing ore.
Background
Flotation is one of the main beneficiation methods for treating gold-containing sulphide ores, and the process is widely applied due to simple flow, environmental friendliness and low production cost.
The conventional flotation process flow is simple and practical, the sorting requirement of most ores can be met, but the conventional process can cause the problems of overhigh grade of gold concentrate, poor recovery effect of monomer and continuous gold, low flotation recovery rate, difficulty in control of sorting and the like aiming at the sorting of high-grade lean sulfide gold-containing ores.
Disclosure of Invention
The invention provides a flotation method for a high-grade lean sulfide gold-containing ore, which aims to solve the problems that the conventional process has overhigh grade of gold concentrate, poor recovery effect of monomer and continuous gold, low flotation recovery rate, difficult control of concentration and the like when the high-grade lean sulfide gold-containing ore is separated.
The technical scheme adopted by the invention is that the method comprises the following steps:
under the fineness that the content of-0.074 mm accounts for 60-70%, the mass percentage concentration of the ore pulp is 30-35%, a sulfide mineral collecting agent with good selectivity is added according to the amount of 0.05-0.15 per mill of the mass of solid in the ore pulp, a foaming agent is added according to the amount of 0.01-0.05 per mill of the mass of solid in the ore pulp, after size mixing, a first rough concentration operation is carried out to obtain a first rough concentrate, and tailings are carried out a second rough concentration operation; performing secondary roughing operation to obtain coarse concentrate II, performing scavenging operation on the tailings, returning the concentrate of each scavenging operation to the previous sorting operation, and performing next sorting operation on the tailings to finally produce flotation tailings; the coarse concentrate II enters the concentration operation, tailings of each concentration operation return to the last separation operation in sequence, and the concentrate enters the next separation operation to finally produce the concentrated concentrate; the first rough concentrate enters the later stage of concentration operation, or is directly combined with the concentrated concentrate produced by the concentration operation to form final flotation concentrate;
the sulfide mineral collecting agent adopts butyl xanthate;
the foaming agent provided by the invention adopts the terpineol oil.
The invention has the advantages that: the process is beneficial to timely sorting of single and continuous gold minerals and can reduce the circulation of target minerals in the process; the treatment capacity of the fine selection operation is reduced; meanwhile, the grade of the final concentrate can be ensured to be stable in a reasonable range, and the mineral separation recovery rate is improved. The process has simple operation, low production cost and ideal mineral dressing index, can efficiently recover the gold mineral in the high-grade lean sulfide gold-bearing ore, furthest utilize the existing resources and obtain mineral dressing products with qualified quality,
Detailed Description
Example 1
The ore processed by the embodiment is a gold-containing ore with a gold grade of 3.05g/t of a crude ore and a certain lean sulfide in Liaoxi, and comprises the following steps:
(1) grinding the raw ore sample until the content of-0.074 mm accounts for 60 percent, adding butyl xanthate serving as a collecting agent according to 0.15 per mill of the mass of solids in the ore pulp, adding pine oil serving as a foaming agent according to 0.03 per mill of the mass of solids in the ore pulp, and mixing the pulp.
(2) Selecting the ore pulp obtained in the step (1) according to the following flow: the ore pulp enters a primary roughing operation to obtain a first rough concentrate, and the tailings enter a secondary roughing operation; performing secondary roughing operation to obtain a second rough concentrate, performing scavenging operation on the tailings for three times, returning the concentrate of each scavenging operation to the previous separation operation, and performing next separation operation on the tailings to finally produce flotation tailings; the second rough concentrate enters the concentration operation twice, tailings of each concentration operation return to the previous concentration operation in sequence, the concentrate enters the next concentration operation, the first rough concentrate enters the second concentration operation, and the final gold concentrate is produced by the second concentration operation;
in the finally obtained gold concentrate, the gold grade is kept between 47g/t and 50g/t, the recovery rate of gold is 90.5 percent, and a good beneficiation index is obtained.
Example 2
Taking certain quartz vein-altered rock type gold-containing sulfide ore in Hebei as an ore sample, wherein the gold grade of the raw ore is 3.50g/t, and the method specifically comprises the following steps:
(1) grinding the raw ore sample until the content of-0.074 mm accounts for 65%, the concentration of the ore pulp is 33%, adding butyl xanthate serving as a collecting agent according to 0.10 per mill of the mass of solids in the ore pulp, adding pine oil serving as a foaming agent according to 0.01 per mill of the mass of solids in the ore pulp, and mixing the pulp.
(2) Selecting the ore pulp obtained in the step (1) according to the following flow: the ore pulp enters a primary roughing operation to obtain a first rough concentrate, and the tailings enter a secondary roughing operation; performing secondary roughing operation to obtain a second rough concentrate, performing scavenging operation on the tailings for three times, returning the concentrate of each scavenging operation to the previous separation operation, and performing next separation operation on the tailings to finally produce flotation tailings; the second rough concentrate enters the concentration operation twice, tailings of each concentration operation return to the previous separation operation in sequence, the concentrate enters the next separation operation, and the concentrate produced by the second concentration and the first rough concentrate are combined into final gold concentrate;
in the finally obtained gold concentrate, the gold grade is kept between 65g/t and 68g/t, the recovery rate of gold is 93.5 percent, and a good beneficiation index is obtained.
Example 3
The method comprises the following steps of taking a certain gold-containing ore of inner Mongolia as an ore sample, wherein the gold grade of a raw ore is 2.85 g/t:
(1) grinding a raw ore sample until the content of minus 0.074mm accounts for 70 percent, adding butyl xanthate serving as a collecting agent according to 0.05 thousandth of the mass of solid in the ore pulp, adding pine oil serving as a foaming agent according to 0.05 thousandth of the mass of the solid in the ore pulp, and mixing the ore pulp;
(2) selecting the ore pulp obtained in the step (1) according to the following flow: the ore pulp enters a primary roughing operation to obtain a first rough concentrate, and the tailings enter a secondary roughing operation; performing secondary roughing operation to obtain a second rough concentrate, performing scavenging operation on the tailings for three times, returning the concentrate of each scavenging operation to the previous separation operation, and performing next separation operation on the tailings to finally produce flotation tailings; the second rough concentrate enters the concentration operation for three times, tailings of each concentration operation return to the previous concentration operation in sequence, the concentrate enters the next concentration operation, the first rough concentrate enters the third concentration operation, and the final gold concentrate is produced by the third concentration operation;
in the finally obtained gold concentrate, the gold grade is kept between 53g/t and 55g/t, the recovery rate of gold is 91.0 percent, and a good beneficiation index is obtained.
Claims (3)
1. A flotation method for high-grade lean sulfide gold-bearing ore is characterized by comprising the following steps: under the fineness that the content of-0.074 mm accounts for 60-70%, the mass percentage concentration of the ore pulp is 30-35%, a sulfide mineral collecting agent with good selectivity is added according to the amount of 0.05-0.15 per mill of the mass of solid in the ore pulp, a foaming agent is added according to the amount of 0.01-0.05 per mill of the mass of solid in the ore pulp, after size mixing, a first rough concentration operation is carried out to obtain a first rough concentrate, and tailings are carried out a second rough concentration operation; performing secondary roughing operation to obtain coarse concentrate II, performing scavenging operation on the tailings, returning the concentrate of each scavenging operation to the previous sorting operation, and performing next sorting operation on the tailings to finally produce flotation tailings; the coarse concentrate II enters the concentration operation, tailings of each concentration operation return to the last separation operation in sequence, and the concentrate enters the next separation operation to finally produce the concentrated concentrate; and the first rough concentrate enters the later stage of the concentration operation or is directly combined with the concentrated concentrate produced by the concentration operation to form final flotation concentrate.
2. The flotation method for the high-grade gold-bearing ore poor in sulfide according to claim 1, is characterized in that: the sulfide mineral collecting agent adopts butyl xanthate.
3. The flotation method for the high-grade gold-bearing ore poor in sulfide according to claim 1, is characterized in that: the foaming agent adopts terpineol oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911092835.3A CN110711647A (en) | 2019-11-08 | 2019-11-08 | Flotation method for high-grade lean sulfide gold-bearing ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911092835.3A CN110711647A (en) | 2019-11-08 | 2019-11-08 | Flotation method for high-grade lean sulfide gold-bearing ore |
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| CN110711647A true CN110711647A (en) | 2020-01-21 |
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| CN201911092835.3A Withdrawn CN110711647A (en) | 2019-11-08 | 2019-11-08 | Flotation method for high-grade lean sulfide gold-bearing ore |
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Citations (8)
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|---|---|---|---|---|
| JP2010188273A (en) * | 2009-02-17 | 2010-09-02 | Taiheiyo Cement Corp | Method and system of treating micropowder containing calcium component and lead component |
| RU2542072C1 (en) * | 2013-09-23 | 2015-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный минерально-сырьевой университет "Горный" | Method for improvement of surface behaviour contrast for gold ore sulphide minerals |
| CN107234006A (en) * | 2017-05-26 | 2017-10-10 | 金川集团股份有限公司 | A kind of method for floating of high cupro-nickel than mineral |
| CN107583765A (en) * | 2017-09-07 | 2018-01-16 | 中南大学 | A kind of method of the complicated plumbum-zinc vulcanizing mine differential FLOTATION SEPARATION of part zincblende activation |
| CN107684972A (en) * | 2016-08-05 | 2018-02-13 | 北京有色金属研究总院 | A kind of more ore deposits of step further utilization mutually carry the group technology of Results of Gold in Auriferous Ore Samples |
| CN107744884A (en) * | 2017-09-30 | 2018-03-02 | 昆明理工大学 | A kind of method of cyanide gold-leaching tailings flotation recycling gold |
| CN109158222A (en) * | 2018-08-28 | 2019-01-08 | 金隆铜业有限公司 | A kind of echelon fast-flotation process of copper converter slag ore dressing |
| CN110013918A (en) * | 2019-01-15 | 2019-07-16 | 中国地质科学院郑州矿产综合利用研究所 | Method for improving gold recovery rate of semi-primary semi-oxidized gold ore by full flotation process |
-
2019
- 2019-11-08 CN CN201911092835.3A patent/CN110711647A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010188273A (en) * | 2009-02-17 | 2010-09-02 | Taiheiyo Cement Corp | Method and system of treating micropowder containing calcium component and lead component |
| RU2542072C1 (en) * | 2013-09-23 | 2015-02-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Национальный минерально-сырьевой университет "Горный" | Method for improvement of surface behaviour contrast for gold ore sulphide minerals |
| CN107684972A (en) * | 2016-08-05 | 2018-02-13 | 北京有色金属研究总院 | A kind of more ore deposits of step further utilization mutually carry the group technology of Results of Gold in Auriferous Ore Samples |
| CN107234006A (en) * | 2017-05-26 | 2017-10-10 | 金川集团股份有限公司 | A kind of method for floating of high cupro-nickel than mineral |
| CN107583765A (en) * | 2017-09-07 | 2018-01-16 | 中南大学 | A kind of method of the complicated plumbum-zinc vulcanizing mine differential FLOTATION SEPARATION of part zincblende activation |
| CN107744884A (en) * | 2017-09-30 | 2018-03-02 | 昆明理工大学 | A kind of method of cyanide gold-leaching tailings flotation recycling gold |
| CN109158222A (en) * | 2018-08-28 | 2019-01-08 | 金隆铜业有限公司 | A kind of echelon fast-flotation process of copper converter slag ore dressing |
| CN110013918A (en) * | 2019-01-15 | 2019-07-16 | 中国地质科学院郑州矿产综合利用研究所 | Method for improving gold recovery rate of semi-primary semi-oxidized gold ore by full flotation process |
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Application publication date: 20200121 |
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