CN108940578B - Beneficiation method for recovering fine-grained cassiterite by adopting flotation machine-flotation column - Google Patents
Beneficiation method for recovering fine-grained cassiterite by adopting flotation machine-flotation column Download PDFInfo
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- CN108940578B CN108940578B CN201810459686.9A CN201810459686A CN108940578B CN 108940578 B CN108940578 B CN 108940578B CN 201810459686 A CN201810459686 A CN 201810459686A CN 108940578 B CN108940578 B CN 108940578B
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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
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/02—Froth-flotation processes
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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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Abstract
The invention relates to a beneficiation method for recovering fine-grained cassiterite by adopting a flotation machine and a flotation column in a combined manner, and belongs to the technical field of beneficiation. Grinding cassiterite tailings, adding water for size mixing, adding a flotation roughing agent, uniformly mixing, and then injecting the mixture into a flotation column at a constant speed for roughing the flotation column to obtain roughed concentrate I and roughed tailings I; adding a flotation scavenging agent into the rougher tailings I, uniformly mixing, injecting into a flotation column at a constant speed, and scavenging to obtain scavenged concentrate I and scavenged tailings I; injecting the scavenged concentrate I into a flotation machine for roughing by the flotation machine to obtain roughed concentrate II and roughed tailings II; scavenging the roughing tailings II by a flotation machine to obtain scavenged concentrate II and scavenged tailings II; returning the scavenging tailings II to mix with the cassiterite tailings and then mixing the mixture to obtain slurry; and combining the roughing concentrate II and the scavenging concentrate II, and then carrying out concentration by a flotation machine to obtain a concentrating concentrate and a concentrating tailing III, returning the concentrating tailing III to be mixed with the scavenging concentrate I, and then carrying out roughing by the flotation machine.
Description
Technical Field
The invention relates to a beneficiation method for recovering fine-grained cassiterite by adopting a flotation machine and a flotation column in a combined manner, and belongs to the technical field of beneficiation.
Background
Tin is an important metal for national economic development, and the target for cassiterite flotation is mostly cassiterite gravity separation tailings at present, so that the grade of the cassiterite treated by flotation is low, the granularity is fine, and the grade and the recovery rate are improved by increasing the times of concentration and scavenging aiming at the part of ore production processes. Although simple, the method directly increases the investment of the flotation machine and the construction investment of the plant in the actual production. When raw ore with tin grade of 0.294% is treated, the grade of final concentrate is required to reach 6% or more, and the requirement can be met only by carrying out flotation machine experiments for at least three times or more; the grade of the tailings can be reduced to be below 0.1 percent only by scavenging for 2 times or more.
Disclosure of Invention
Aiming at the problems and the defects in the prior art, the invention provides the beneficiation method for recovering the fine-grained cassiterite by combining the flotation machine and the flotation column, the cassiterite tailings are recovered by combining the flotation machine and the flotation column, the process flow can be greatly shortened, the recovery efficiency is improved, and the grade of the tin concentrate recovered by the method can reach more than 6%.
A mineral processing method for recovering fine cassiterite by adopting a flotation machine-flotation column in a combined mode comprises the following specific steps:
(1) grinding cassiterite tailings until the particle size is smaller than 0.074mm and accounts for 80-85%, adding water to adjust the size until the concentration of ore pulp is 30-40%, sequentially adding 400-500 g/t of activating agent, 200-300 g/t of sodium carbonate, 1200-1400 g/t of collecting agent, 40-50 g/t of auxiliary collecting agent and 40-50 g/t of foaming agent for flotation roughing, and uniformly mixing to obtain ore pulp I to be selected;
(2) injecting the ore pulp I to be selected obtained in the step (1) into a flotation column at a constant speed, adjusting the liquid level and the aeration quantity to enable the thickness of a foam layer to be 70-80 cm, and performing rough concentration on the flotation column to obtain rough concentrate I and rough tailings I;
(3) adding 60-100 g/t of activating agent, 40-50 g/t of sodium carbonate, 240-280 g/t of collecting agent, 8-10 g/t of auxiliary collecting agent and 8-10 g/t of foaming agent into the roughed tailings I obtained in the step (2) in sequence, and uniformly mixing to obtain ore pulp II to be selected;
(4) injecting the ore pulp II to be selected in the step (3) into a flotation column at a constant speed, adjusting the liquid level and the aeration quantity to enable the thickness of a foam layer to be 30-40 cm, and performing scavenging on the flotation column to obtain scavenged concentrate I and scavenged tailings I;
(5) injecting the scavenged concentrate I obtained in the step (4) into a flotation machine for roughing for 4-6 min to obtain roughed concentrate II and roughed tailings II; carrying out scavenging on the roughing tailings II for 4-6 min by a flotation machine to obtain scavenging concentrates II and scavenging tailings II; returning the scavenged tailings II to the step (1), mixing with the cassiterite tailings, and then mixing to obtain slurry;
(6) combining the roughing concentrate II and the scavenging concentrate II in the step (5), then carrying out flotation for 4-6 min by using a flotation machine to obtain a fine concentrate and a fine tailings III, returning the fine tailings III to the step (5), mixing the fine concentrate with the scavenging concentrate I, then carrying out roughing by using the flotation machine, and combining the fine concentrate with the roughing concentrate I in the step (1) to obtain a cassiterite concentrate;
further, the activating agent is YT-51, the collecting agent is JSY-19, the auxiliary collecting agent is P86, and the foaming agent is No. 2 oil;
further, the coarse concentration speed of the flotation column in the step (2) is 200-300 m L/min;
further, the scavenging speed of the flotation column in the step (4) is 200-300 m L/min.
The invention has the beneficial effects that:
(1) the method adopts the flotation machine-flotation column combination to recycle the cassiterite tailings, so that the process flow can be greatly shortened, and the recycling efficiency is improved;
(2) the recovery rate of tin by the method is far higher than that of tin by the existing flotation machine, and the grade of the recovered tin concentrate can reach more than 6%.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The present invention will be further described with reference to the following embodiments.
Example 1: in the embodiment, the grade of tin in the cassiterite tailings is 0.293%;
a mineral processing method for recovering fine cassiterite by adopting a flotation machine-flotation column in a combined mode comprises the following specific steps:
(1) grinding the cassiterite tailings until the particle size is smaller than 0.074mm and accounts for 83.1%, wherein the monomer dissociation degree in the cassiterite tailings powder is 67%, and more than 80% of cassiterite embedding particle size is smaller than 800 meshes; adding water, mixing the pulp until the pulp concentration is 30%, sequentially adding 400g/t of activating agent (YT-51), 200g/t of sodium carbonate, 1200 g/t of collecting agent (JSY-19), 40g/t of auxiliary collecting agent (P86) and 50g/t of foaming agent (No. 2 oil) for flotation roughing, and uniformly mixing to obtain pulp I to be selected;
(2) injecting the ore pulp I to be selected obtained in the step (1) into a flotation column at a constant speed, adjusting the liquid level and the air inflation amount to enable the thickness of a foam layer to be 70cm, and the roughing speed of the flotation column to be 300m L/min to obtain a roughing concentrate I and a roughing tailing I, wherein the grade of tin in the roughing concentrate I is 7.080%, the roughing concentrate I (Sn concentrate) is 2.53% of the mass of the cassiterite tailing, the recovery rate of tin reaches 61.13%, the grade of tin in the roughing tailing I is 0.117%, the roughing tailing I is 97.47% of the mass of the cassiterite tailing, and the enrichment ratio of tin in the roughing concentrate I (Sn concentrate) reaches 24;
(3) adding 80g/t of activating agent (YT-51 as the activating agent), 40g/t of sodium carbonate, 240 g/t of collecting agent (JSY-19 as the collecting agent), 8g/t of auxiliary collecting agent (P86 as the auxiliary collecting agent) and 10g/t of foaming agent (No. 2 oil as the foaming agent) into the roughed tailings I obtained in the step (2) in sequence, and uniformly mixing to obtain ore pulp II to be selected;
(4) injecting the ore pulp II to be sorted in the step (3) into a flotation column at a constant speed, adjusting the liquid level and the air inflation amount to enable the thickness of a foam layer to be 30cm, and the scavenging speed of the flotation column to be 250m L/min to obtain scavenging concentrate I and scavenging tailings I, wherein the grade of tin in the scavenging concentrate I is 1.820%, the scavenging concentrate I accounts for 1.50% of the mass of the roughing tailings I, the recovery rate of tin in the scavenging concentrate I accounts for 23.33% of the mass of the tin in the roughing tailings I, the grade of tin in the scavenging tailings I accounts for 0.091%, and the scavenging tailings I accounts for 98.50% of the mass of the roughing tailings I;
(5) injecting the scavenged concentrate I obtained in the step (4) into a flotation machine for roughing for 5min to obtain roughed concentrate II and roughed tailings II; carrying out scavenging on the roughing tailings II for 5min by a flotation machine to obtain scavenging concentrates II and scavenging tailings II; returning the scavenged tailings II to the step (1), mixing with the cassiterite tailings, and then mixing to obtain slurry;
(6) combining the roughing concentrate II and the scavenging concentrate II in the step (5), then carrying out flotation for 6min by using a flotation machine to obtain a concentrated concentrate and a concentrated tailing III, returning the concentrated tailing III to the step (5), mixing the concentrated concentrate with the scavenging concentrate I, then carrying out roughing by using the flotation machine, and combining the concentrated concentrate with the roughing concentrate I in the step (1) to obtain a cassiterite concentrate; the grade of tin in the cassiterite concentrate is 6.07 percent, the cassiterite concentrate is 3.62 percent of the quality of cassiterite tailings (raw ores), and the recovery rate of tin reaches 72.10 percent.
Example 2: in this embodiment, the grade of tin in cassiterite tailings is 0.335%;
a mineral processing method for recovering fine cassiterite by adopting a flotation machine-flotation column in a combined mode comprises the following specific steps:
(1) grinding the cassiterite tailings until the particle size is smaller than 0.074mm and accounts for 86.1%, wherein the monomer dissociation degree in the cassiterite tailings powder is 67.36%, and the cassiterite embedding particle size of more than 84.31% is smaller than 800 meshes; adding water, mixing the pulp until the pulp concentration is 33%, sequentially adding flotation roughing agents including an activating agent (YT-51) 450g/t, sodium carbonate 250g/t, a collecting agent (JSY-19), an auxiliary collecting agent (P86), and a foaming agent (2 # oil), and mixing uniformly to obtain pulp I to be selected;
(2) injecting the ore pulp I to be selected obtained in the step (1) into a flotation column at a constant speed, adjusting the liquid level and the air inflation amount to enable the thickness of a foam layer to be 75cm, and the roughing speed of the flotation column to be 200m L/min to obtain a roughing concentrate I and a roughing tailing I, wherein the grade of tin in the roughing concentrate I is 7.32%, the roughing concentrate I (Sn concentrate) is 2.12% of the mass of the cassiterite tailing, the recovery rate of tin is 45.34%, the grade of tin in the roughing tailing I is 0.187%, the roughing tailing I is 97.93% of the mass of the cassiterite tailing, and the enrichment ratio of tin in the roughing concentrate I (Sn concentrate) is 21.85;
(3) sequentially adding 90g/t of activating agent (YT-51 as the activating agent), 50g/t of sodium carbonate, 260g/t of collecting agent (JSY-19 as the collecting agent), 10g/t of auxiliary collecting agent (P86 as the auxiliary collecting agent) and 9g/t of foaming agent (No. 2 oil as the foaming agent) into the roughed tailings I obtained in the step (2), and uniformly mixing to obtain ore pulp II to be selected;
(4) injecting the ore pulp II to be sorted in the step (3) into a flotation column at a constant speed, adjusting the liquid level and the air inflation amount to enable the thickness of a foam layer to be 35cm, and the scavenging speed of the flotation column to be 300m L/min to obtain scavenging concentrate I and scavenging tailings I, wherein the grade of tin in the scavenging concentrate I is 0.621 percent, the scavenging concentrate I is 22.12 percent of the mass of the roughing tailings I, the recovery rate of tin in the scavenging concentrate I is up to 60.15 percent of the mass of tin in the roughing tailings I, the grade of tin in the scavenging tailings I is 0.287 percent, and the scavenging tailings I is 18.11 percent of the mass of the roughing tailings I;
(5) injecting the scavenged concentrate I obtained in the step (4) into a flotation machine for roughing for 6min to obtain roughed concentrate II and roughed tailings II; carrying out scavenging on the roughing tailings II for 4min by a flotation machine to obtain scavenging concentrates II and scavenging tailings II; returning the scavenged tailings II to the step (1), mixing with the cassiterite tailings, and then mixing to obtain slurry;
(6) combining the roughing concentrate II and the scavenging concentrate II in the step (5), then carrying out flotation for 4min by using a flotation machine to obtain a concentrated concentrate and a concentrated tailing III, returning the concentrated tailing III to the step (5), mixing the concentrated concentrate with the scavenging concentrate I, then carrying out roughing by using the flotation machine, and combining the concentrated concentrate with the roughing concentrate I in the step (1) to obtain a cassiterite concentrate; the grade of tin in the cassiterite concentrate is 6.31 percent, the cassiterite concentrate is 3.92 percent of the quality of cassiterite tailings (raw ores), and the recovery rate of tin reaches 73.90 percent.
Example 3: in this example, the grade of tin in cassiterite tailings is 0.317%;
a mineral processing method for recovering fine cassiterite by adopting a flotation machine-flotation column in a combined mode comprises the following specific steps:
(1) grinding the cassiterite tailings until the particle size is smaller than 0.074mm and accounts for 81.7%, wherein the monomer dissociation degree in the cassiterite tailings powder is 65.8%, and more than 79.65% of cassiterite embedded particle sizes are smaller than 800 meshes; adding water, mixing the pulp until the pulp concentration is 35%, sequentially adding 500g/t of activating agent (YT-51), 300g/t of sodium carbonate, 1400g/t of collecting agent (JSY-19), 50g/t of auxiliary collecting agent (P86) and 40g/t of foaming agent (No. 2 oil) for flotation roughing, and uniformly mixing to obtain pulp I to be selected;
(2) injecting the ore pulp I to be selected obtained in the step (1) into a flotation column at a constant speed, adjusting the liquid level and the air inflation amount to enable the thickness of a foam layer to be 80cm, and the roughing speed of the flotation column to be 270m L/min to obtain a roughing concentrate I and a roughing tailing I, wherein the grade of tin in the roughing concentrate I is 7.03 percent, the roughing concentrate I (Sn concentrate) is 2.07 percent of the mass of the cassiterite tailing, the recovery rate of tin is 45.94 percent, the grade of tin in the roughing tailing I is 0.175 percent, and the roughing tailing I is 97.93 percent of the mass of the cassiterite tailing, and the enrichment ratio of tin in the roughing concentrate I (Sn concentrate) is 22.18;
(3) sequentially adding 60g/t of activating agent (YT-51 as the activating agent), 45g/t of sodium carbonate, 280g/t of collecting agent (JSY-19 as the collecting agent), 9g/t of auxiliary collecting agent (P86 as the auxiliary collecting agent) and 8g/t of foaming agent (No. 2 oil as the foaming agent) into the roughed tailings I obtained in the step (2), and uniformly mixing to obtain ore pulp II to be selected;
(4) injecting the ore pulp II to be sorted in the step (3) into a flotation column at a constant speed, adjusting the liquid level and the air inflation amount to enable the thickness of a foam layer to be 40cm, and adjusting the scavenging speed of the flotation column to be 200m L/min to obtain scavenging concentrate I and scavenging tailings I, wherein the grade of tin in the scavenging concentrate I is 0.597%, the scavenging concentrate I is 16.93% of the mass of the roughing tailings I, the recovery rate of tin in the scavenging concentrate I is 57.75% of that in the roughing tailings I, the grade of tin in the scavenging tailings I is 0.089%, and the scavenging tailings I is 83.07% of that in the roughing tailings I;
(5) injecting the scavenged concentrate I obtained in the step (4) into a flotation machine for roughing for 4min to obtain roughed concentrate II and roughed tailings II; carrying out scavenging on the roughing tailings II for 6min by a flotation machine to obtain scavenging concentrates II and scavenging tailings II; returning the scavenged tailings II to the step (1), mixing with the cassiterite tailings, and then mixing to obtain slurry;
(6) combining the roughing concentrate II and the scavenging concentrate II in the step (5), then carrying out flotation for 5min by using a flotation machine to obtain a concentrated concentrate and a concentrated tailing III, returning the concentrated tailing III to the step (5), mixing the concentrated concentrate with the scavenging concentrate I, then carrying out roughing by using the flotation machine, and combining the concentrated concentrate with the roughing concentrate I in the step (1) to obtain a cassiterite concentrate; the grade of tin in the cassiterite concentrate is 6.31 percent, the cassiterite concentrate is 3.66 percent of the quality of cassiterite tailings (raw ore), and the recovery rate of tin reaches 72.95 percent.
While the present invention has been described in detail with reference to the specific embodiments thereof, the present invention is not limited to the embodiments described above, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (4)
1. A mineral processing method for recovering fine cassiterite by adopting a flotation machine-flotation column in a combined mode is characterized by comprising the following specific steps:
(1) grinding cassiterite tailings until the particle size is smaller than 0.074mm and accounts for 80-85%, adding water to adjust the size until the concentration of ore pulp is 30-40%, sequentially adding 400-500 g/t of activating agent, 200-300 g/t of sodium carbonate, 1200-1400 g/t of collecting agent, 40-50 g/t of auxiliary collecting agent and 40-50 g/t of foaming agent for flotation roughing, and uniformly mixing to obtain ore pulp I to be selected;
(2) injecting the ore pulp I to be selected obtained in the step (1) into a flotation column at a constant speed, adjusting the liquid level and the aeration quantity to enable the thickness of a foam layer to be 70-80 cm, and performing rough selection on the flotation column to obtain rough concentrate I and rough tailings I;
(3) adding 60-100 g/t of activating agent, 40-50 g/t of sodium carbonate, 240-280 g/t of collecting agent, 8-10 g/t of auxiliary collecting agent and 8-10 g/t of foaming agent into the roughed tailings I obtained in the step (2) in sequence, and uniformly mixing to obtain ore pulp II to be selected;
(4) injecting the ore pulp II to be selected in the step (3) into a flotation column at a constant speed, adjusting the liquid level and the aeration quantity to enable the thickness of a foam layer to be 30-40 cm, and performing scavenging on the flotation column to obtain scavenged concentrate I and scavenged tailings I;
(5) injecting the scavenged concentrate I obtained in the step (4) into a flotation machine for roughing for 4-6 min to obtain roughed concentrate II and roughed tailings II; carrying out scavenging on the roughing tailings II for 4-6 min by a flotation machine to obtain scavenging concentrates II and scavenging tailings II; returning the scavenged tailings II to the step (1), mixing with the cassiterite tailings, and then mixing to obtain slurry;
(6) and (3) combining the roughing concentrate II and the scavenging concentrate II in the step (5), then carrying out flotation for 4-6 min by using a flotation machine to obtain a fine concentrate and a fine tailings III, returning the fine tailings III to the step (5), mixing the fine concentrate with the scavenging concentrate I, then carrying out roughing by using the flotation machine, and combining the fine concentrate with the roughing concentrate I in the step (1) to obtain the cassiterite concentrate.
2. The beneficiation process for the recovery of fine-grained cassiterite with a flotation machine-column combination according to claim 1, characterized in that: the activating agent is YT-51, the collecting agent is JSY-19, the auxiliary collecting agent is P86, and the foaming agent is No. 2 oil.
3. The beneficiation method for recovering the fine cassiterite by combining the flotation machine and the flotation column according to claim 1, wherein the flotation column rougher speed in the step (2) is 200-300 m L/min.
4. The beneficiation method for recovering fine-grained cassiterite by using the flotation machine-flotation column combination according to claim 1, wherein the sweeping speed of the flotation column in the step (4) is 200-300 m L/min.
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| CN112718235B (en) * | 2020-11-16 | 2023-03-21 | 内蒙古维拉斯托矿业有限公司 | Tungsten-tin comprehensive recovery combined reselection method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011085445A1 (en) * | 2010-01-14 | 2011-07-21 | Teebee Holdings Pty Ltd | Flotation reagents |
| CN103736569A (en) * | 2013-12-13 | 2014-04-23 | 金川集团股份有限公司 | Beneficiation method of sulphide ore |
| CN104923408A (en) * | 2015-07-08 | 2015-09-23 | 中国矿业大学 | Co-platform flotation column and flotation machine combined separating technology and device |
| CN106492979A (en) * | 2016-11-07 | 2017-03-15 | 昆明理工大学 | A kind of method that ultrafine fraction cassiterite is recycled |
| CN107890946A (en) * | 2017-09-29 | 2018-04-10 | 昆明理工大学 | A kind of beneficiation method of micro fine particle |
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| WO2010002980A2 (en) * | 2008-07-02 | 2010-01-07 | Georgia-Pacific Chemicals Llc | Collectors |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011085445A1 (en) * | 2010-01-14 | 2011-07-21 | Teebee Holdings Pty Ltd | Flotation reagents |
| CN103736569A (en) * | 2013-12-13 | 2014-04-23 | 金川集团股份有限公司 | Beneficiation method of sulphide ore |
| CN104923408A (en) * | 2015-07-08 | 2015-09-23 | 中国矿业大学 | Co-platform flotation column and flotation machine combined separating technology and device |
| CN106492979A (en) * | 2016-11-07 | 2017-03-15 | 昆明理工大学 | A kind of method that ultrafine fraction cassiterite is recycled |
| CN107890946A (en) * | 2017-09-29 | 2018-04-10 | 昆明理工大学 | A kind of beneficiation method of micro fine particle |
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