CN103977881A - Method for selecting gold from gold ore leaching slag - Google Patents
Method for selecting gold from gold ore leaching slag Download PDFInfo
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- CN103977881A CN103977881A CN201410190064.2A CN201410190064A CN103977881A CN 103977881 A CN103977881 A CN 103977881A CN 201410190064 A CN201410190064 A CN 201410190064A CN 103977881 A CN103977881 A CN 103977881A
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Abstract
The invention discloses a method for selecting gold from gold ore leaching slag, which comprises the steps of ore grinding, grid screening, roughing, scavenging, primary fine selection, secondary fine selection and tertiary fine selection. Adding activated carbon during ore grinding, filtering gold-loaded carbon with high gold content at a ball-milling ore discharge port by adopting a 40-mesh grid sieve, then performing flotation operation, adding an inhibitor, a collecting agent and a foaming agent, mixing and stirring, and performing rough flotation operation. The inhibitor is sodium fluosilicate, the collecting agent is ammonium nitrate black powder, and the foaming agent is pine oil. According to the method, ore grinding and grid screening are reasonably arranged, the gold grade of the gold-loaded carbon reaches 70-80 g/ton, the gold grade of the flotation gold concentrate reaches 15-20 g/ton, the recovery rate of the gold-loaded carbon reaches 5-6%, the recovery rate of the flotation gold reaches 50-55%, and the total recovery rate of gold reaches 55-61%. The beneficiation method is simple in process and easy to operate on site.
Description
Technical field
The present invention relates to a kind of beneficiation method, particularly a kind ofly from Gold ore leaching slag, select golden method.
Background technology
General Gold ore leaching slag adopts direct flotation to reclaim gold mineral.Direct flotation reclaims and causes on the one hand a small amount of gold loaded carbon loss, existence due to gold loaded carbon causes flotation collecting dosing to surge in addition, has reduced the selectivity of floating agent, worsens flotation environment, dosing increases, and has had a strong impact on the quality of gold floatation concentrate.
Summary of the invention
The object of the present invention is to provide a kind of golden method of selecting from Gold ore leaching slag, to solve in traditional floatation process, adopt direct flotation to reclaim gold mineral, had a strong impact on the problem of the quality of gold floatation concentrate.
From Gold ore leaching slag, select a golden method, by following steps, formed:
(1) ore grinding: former slag is soaked and carries out ore grinding, during ore grinding, add active carbon 800～1200g/t, add water size mixing to concentration be 30～40%(mass concentration).Preferably, former slag mill ore deposit to the ore particle that is less than 0.074mm is accounted for to 70-80%;
(2) diagrid: ore pulp first sifts out containing the higher gold loaded carbon of gold with diagrid, the more lower ore pulp of sieve is entered to flotation operation.During ore grinding, device therefor comprises ball mill, and diagrid is located at ball mill discharging mouth below, and lattice grit number is 40 orders;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 500～1000 g/t, collecting agent butyl ammonium aerofloat 10～20 g/t, foaming agent terpenic oil 5～10g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 2.5～5g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 100～300 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats; Primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats; Recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats; Triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
Advantage of the present invention is: (1) the method, by ore grinding, diagrid reasonable disposition, first adopts diagrid to filter out containing the higher gold loaded carbon of gold, has realized the recovery of particulate gold; (2) adopt inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil, has optimized floatation process, improves concentrate grade; (3) adopt roughly select, three times selected be recycled goldc grains in slag as far as possible; (4) this beneficiation method technological process result is simple, and scene is easy to bookkeeping, and beneficiation cost is lower, and mineral processing index is better.Gold loaded carbon gold grade reaches 70～80 grams/ton, and gold floatation concentrate gold grade reaches 15～20 grams/ton, and gold loaded carbon gold recovery reaches 5～6%, and flotation gold recovery reaches 50～55%, and golden overall recovery reaches 55～61%.
Accompanying drawing explanation
Fig. 1 is flow chart of the present invention.
The specific embodiment
For a better understanding of the present invention, below in conjunction with embodiment, further illustrate content of the present invention, but content of the present invention is not only confined to embodiment.
Following examples are selected the mine tailing sample of Xinjiang Cyanide Leaching, in ore, major metal mineral are less, through representative sample ore is sampled, is analyzed, Cu:0.10%, Pb:0.30%, Zn:0.50%, S:1.50%, Au:1.35 gram/ton, this mine tailing sample position are lower, in addition after Cyanide Leaching, be heavily polluted, secondary copper sulfide content accounts for 32.80%, and lead, zinc oxygenation efficiency are all more than 50%.
In embodiment 1-6, add active carbon, inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil.Dosing is all by raw ore per ton, and concrete consumption is in Table 1.
embodiment 1
(1) ore grinding: former slag is carried out to ore grinding, raw ore ore grinding to the ore particle that is less than 0.074mm is accounted for to 75%, during ore grinding, add active carbon 1000 g/t, add water size mixing to concentration be 36%;
(2) diagrid: adopt 40 order diagrids first to filter out on sieve containing the higher gold loaded carbon of gold at ball mill ore discharging mouth, then sieve time ore pulp is entered to flotation operation;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 700 g/t, collecting agent butyl ammonium aerofloat 10 g/t, foaming agent terpenic oil 10g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 2.5 g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 100 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats; Primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats; Recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats; Triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
In above step, add active carbon, inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil.
embodiment 2
(1) ore grinding: former slag is carried out to ore grinding, raw ore ore grinding to the ore particle that is less than 0.074mm is accounted for to 70%, during ore grinding, add active carbon 1200 g/t, add water size mixing to concentration be 30%;
(2) diagrid: adopt 40 order diagrids first to filter out on sieve containing the higher gold loaded carbon of gold at ball mill ore discharging mouth, then sieve time ore pulp is entered to flotation operation;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 500 g/t, collecting agent butyl ammonium aerofloat 15 g/t, foaming agent terpenic oil 5g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 2.5 g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 300 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats; Primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats; Recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats; Triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
In above step, add active carbon, inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil.
embodiment 3
(1) ore grinding: former slag is carried out to ore grinding, raw ore ore grinding to the ore particle that is less than 0.074mm is accounted for to 80%, during ore grinding, add active carbon 900 g/t, add water size mixing to concentration be 40%;
(2) diagrid: adopt 40 order diagrids first to filter out on sieve containing the higher gold loaded carbon of gold at ball mill ore discharging mouth, then sieve time ore pulp is entered to flotation operation;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 900 g/t, collecting agent butyl ammonium aerofloat 15 g/t, foaming agent terpenic oil 10g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 5 g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 200 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats; Primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats; Recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats; Triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
In above step, add active carbon, inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil.
embodiment 4
(1) ore grinding: former slag is carried out to ore grinding, raw ore ore grinding to the ore particle that is less than 0.074mm is accounted for to 72%, during ore grinding, add active carbon 800 g/t, add water size mixing to concentration be 38%;
(2) diagrid: adopt 40 order diagrids first to filter out on sieve containing the higher gold loaded carbon of gold at ball mill ore discharging mouth, then sieve time ore pulp is entered to flotation operation;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 1000 g/t, collecting agent butyl ammonium aerofloat 20 g/t, foaming agent terpenic oil 5g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 5 g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 200 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats; Primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats; Recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats; Triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
In above step, add active carbon, inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil.
embodiment 5
(1) ore grinding: former slag is carried out to ore grinding, raw ore ore grinding to the ore particle that is less than 0.074mm is accounted for to 77%, during ore grinding, add active carbon 1100 g/t, add water size mixing to concentration be 33%;
(2) diagrid: adopt 40 order diagrids first to filter out on sieve containing the higher gold loaded carbon of gold at ball mill ore discharging mouth, then sieve time ore pulp is entered to flotation operation;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 800 g/t, collecting agent butyl ammonium aerofloat 20 g/t, foaming agent terpenic oil 5g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 5 g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 300 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats; Primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats; Recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats; Triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
In above step, add active carbon, inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil.
embodiment 6
(1) ore grinding: former slag is carried out to ore grinding, raw ore ore grinding to the ore particle that is less than 0.074mm is accounted for to 77%, during ore grinding, add active carbon 1000 g/t, add water size mixing to concentration be 37%;
(2) diagrid: adopt 40 order diagrids first to filter out on sieve containing the higher gold loaded carbon of gold at ball mill ore discharging mouth, then sieve time ore pulp is entered to flotation operation;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 600 g/t, collecting agent butyl ammonium aerofloat 10 g/t, foaming agent terpenic oil 10g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 5 g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 100 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats; Primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats; Recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats; Triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
In above step, add active carbon, inhibitor prodan, collecting agent butyl ammonium aerofloat, foaming agent terpenic oil.
The closed-circuit test of embodiment 1-6 the results are shown in Table 2, result demonstration, and gold loaded carbon gold grade reaches 70～80 grams/ton, gold floatation concentrate gold grade reaches 15～20 grams/ton, gold loaded carbon gold recovery reaches 5～6%, and flotation gold recovery reaches 50～55%, and golden overall recovery reaches 55～61%.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. from Gold ore leaching slag, select a golden method, it is characterized in that being formed by following steps:
(1) ore grinding: former slag is carried out to ore grinding, during ore grinding, adds active carbon 800～1200g/t, add water size mixing to concentration be 30～40%;
(2) diagrid: ore pulp first sifts out containing the higher gold loaded carbon of gold with diagrid, the more lower ore pulp of sieve is entered to flotation operation;
(3) roughly select: in ore pulp, add successively gangue inhibitor, collecting agent, foaming agent, the stirring of sizing mixing, roughly selects flotation operation, obtain and roughly select concentrate and rougher tailings; Addition is by raw ore per ton, inhibitor prodan 500～1000 g/t, collecting agent butyl ammonium aerofloat 10～20 g/t, foaming agent terpenic oil 5～10g/t;
(4) scan: by raw ore per ton, in rougher tailings, add the collecting agent butyl ammonium aerofloat of 2.5～5g/t, the stirring of sizing mixing, scan flotation operation, obtain scavenger concentrate and scan mine tailing, scanning mine tailing and be true tailings, scavenger concentrate returns roughly selects flotation operation formation closed cycle;
(5) primary cleaning: by raw ore per ton, add inhibitor prodan 100～300 g/t roughly selecting concentrate, carry out primary cleaning, obtain primary cleaning concentrate and primary cleaning chats, primary cleaning chats and scavenger concentrate merge to return roughly selects operation formation closed cycle;
(6) recleaning: primary cleaning concentrate is carried out to recleaning, obtain recleaning concentrate and recleaning chats, recleaning chats returns to primary cleaning operation and forms closed cycle;
(7) triple cleaning: recleaning concentrate is carried out to triple cleaning, obtain triple cleaning concentrate and triple cleaning chats, triple cleaning concentrate is final concentrate, and triple cleaning chats returns to recleaning operation and forms closed cycle.
2. according to claim 1ly from Gold ore leaching slag, select golden method, it is characterized in that: ore grinding device therefor comprises ball mill, diagrid is located at ball mill discharging mouth below.
3. according to claim 1ly from Gold ore leaching slag, select golden method, it is characterized in that: described lattice grit number is 40 orders.
4. according to claim 1ly from Gold ore leaching slag, select golden method, it is characterized in that: in described step (1), ore grinding to the ore particle that is less than 0.074mm accounts for 70-80%.
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Cited By (11)
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| CN107930858A (en) * | 2017-11-24 | 2018-04-20 | 鹤庆北衙矿业有限公司 | The method of gold and silver is enriched with a kind of broken charcoal from cyanidation tailings |
| CN109433404A (en) * | 2018-11-01 | 2019-03-08 | 中国恩菲工程技术有限公司 | Golden grinding circuit gravity treatment recyclable device and recovery method |
| CN109482359A (en) * | 2018-11-16 | 2019-03-19 | 西北矿冶研究院 | Method for recovering gold from flotation tailings |
| CN109852795A (en) * | 2019-03-12 | 2019-06-07 | 大冶有色设计研究院有限公司 | A kind of comprehensive recovering process for the selecting and smelting recovery rate improving Technique of Refractory Gold Ores |
| CN109954590A (en) * | 2019-04-23 | 2019-07-02 | 中南大学 | A method of the flotation recovery gold from low-grade gold |
| 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 |
| CN112210675A (en) * | 2020-09-25 | 2021-01-12 | 广东邦普循环科技有限公司 | Method for recovering gold from all-mud cyanided tailings |
| CN112536155A (en) * | 2020-09-03 | 2021-03-23 | 中南大学 | Medicament group containing fluosilicic acid and application thereof |
| RU2751395C1 (en) * | 2020-12-11 | 2021-07-13 | Акционерное общество "Золоторудная Компания ПАВЛИК" | Method for processing refractory carbonaceous gold-bearing ores |
| CN114471955A (en) * | 2022-01-05 | 2022-05-13 | 肃北县金鹰黄金有限责任公司 | Method for efficiently recovering gold in tailings based on flotation process |
| CN114471955B (en) * | 2022-01-05 | 2024-04-30 | 肃北县金鹰黄金有限责任公司 | Method for efficiently recycling gold in tailings based on flotation technology |
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| CN109433404A (en) * | 2018-11-01 | 2019-03-08 | 中国恩菲工程技术有限公司 | Golden grinding circuit gravity treatment recyclable device and recovery method |
| CN109482359A (en) * | 2018-11-16 | 2019-03-19 | 西北矿冶研究院 | Method for recovering gold from flotation tailings |
| 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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| CN109852795B (en) * | 2019-03-12 | 2021-07-30 | 大冶有色设计研究院有限公司 | Comprehensive recovery method for improving dressing and smelting recovery rate of refractory metallurgical ore |
| CN109954590B (en) * | 2019-04-23 | 2020-05-19 | 中南大学 | Method for recovering gold from low-grade gold ore by flotation |
| CN109954590A (en) * | 2019-04-23 | 2019-07-02 | 中南大学 | A method of the flotation recovery gold from low-grade gold |
| CN112536155A (en) * | 2020-09-03 | 2021-03-23 | 中南大学 | Medicament group containing fluosilicic acid and application thereof |
| CN112536155B (en) * | 2020-09-03 | 2022-02-08 | 中南大学 | Medicament group containing fluosilicic acid and application thereof |
| CN112210675A (en) * | 2020-09-25 | 2021-01-12 | 广东邦普循环科技有限公司 | Method for recovering gold from all-mud cyanided tailings |
| WO2022062674A1 (en) * | 2020-09-25 | 2022-03-31 | 广东邦普循环科技有限公司 | Method for recycling gold from full-mud cyanide tailings |
| RU2751395C1 (en) * | 2020-12-11 | 2021-07-13 | Акционерное общество "Золоторудная Компания ПАВЛИК" | Method for processing refractory carbonaceous gold-bearing ores |
| CN114471955A (en) * | 2022-01-05 | 2022-05-13 | 肃北县金鹰黄金有限责任公司 | Method for efficiently recovering gold in tailings based on flotation process |
| CN114471955B (en) * | 2022-01-05 | 2024-04-30 | 肃北县金鹰黄金有限责任公司 | Method for efficiently recycling gold in tailings based on flotation technology |
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