CN102909123A - Method for increasing recovery rate of floatation sulphur concentrate in gold concentrate direct cyanidation tailings - Google Patents
Method for increasing recovery rate of floatation sulphur concentrate in gold concentrate direct cyanidation tailings Download PDFInfo
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- CN102909123A CN102909123A CN2012104055447A CN201210405544A CN102909123A CN 102909123 A CN102909123 A CN 102909123A CN 2012104055447 A CN2012104055447 A CN 2012104055447A CN 201210405544 A CN201210405544 A CN 201210405544A CN 102909123 A CN102909123 A CN 102909123A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/52—Mechanical processing of waste for the recovery of materials, e.g. crushing, shredding, separation or disassembly
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/60—Glass recycling
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Abstract
The invention relates to a method for increasing the recovery rate of floatation sulphur concentrate in gold concentrate direct cyanidation tailings. An efficient spiral chute gravity beneficiation machine is used for producing low-grade sulphur concentrate containing 15-20% of sulphur. The low-grade sulphur concentrate is activated by copper sulfate and used for implementing a flotation technology by adding proper collecting agent and foaming agent, so that sulphur minerals in the gold concentrate direct cyanidation tailings are floated and recovered completely. The sulphur grade in the sulphur concentrate is greater than 46%. The sulphur grade in the floatation tailings is less than 3.0%. The total recovery rate of sulphur is greater than 95%. The comprehensive utilization effect of the resources is improved greatly and the resource waste is reduced.
Description
Technical field
The present invention relates to a kind of method that improves the direct cyanidation tailings flotation of sulfur concentrate of the Gold Concentrate under Normal Pressure rate of recovery, belong to gold smelting and floating separation technical field, relate to the resource of tailings comprehensive utilization technique field that smelts.
Background technology
Be fit to the Gold Concentrate under Normal Pressure that direct cyanidation system is processed, except containing gold and silver, also contain sulphur, the valuable metals such as a certain amount of copper, lead.Gold Concentrate under Normal Pressure is after directly gold and silver is extracted in cyaniding, cyanidation tailings successively, copper-separating process plumbous through choosing obtain leaded greater than 40% lead concentrate and cupric greater than 10% copper concentrate, lead concentrate is sold outward to plumbous smeltery, and copper concentrate is sold to copper smelting plant outward or adopted sulfating roasting, acidleach, the qualified tough cathode of extraction electrodeposition output.Select the copper mine tailing through selecting sulphur technique, the output sulfur-bearing is greater than 46% sulphur concentrate, and the flotation tailing of sulfur-bearing 5-8% is stored up or waste treatment, and is poor owing to the recovering effect of sulphur in producing like this, effectively do not reclaimed, and caused wasting of resource.
Summary of the invention
Technical problem to be solved by this invention provides a kind of method that improves the direct cyanidation tailings flotation of sulfur concentrate of the Gold Concentrate under Normal Pressure rate of recovery, and the present invention has improved the comprehensive utilization effect of resource greatly, has reduced the wasting of resources.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of method that improves the direct cyanidation tailings flotation of sulfur concentrate of the Gold Concentrate under Normal Pressure rate of recovery may further comprise the steps:
1) the direct cyanidation tailings of Gold Concentrate under Normal Pressure is selected splicer plants, copper-separating process, output leaded greater than 40% lead concentrate and cupric greater than 10% copper concentrate, remaining is flotation tailing;
2) flotation tailing that obtains in the step 1) is put into surge tank 1, add again entry, and carry out the first time and stir, be 30%～35% flotation tailing pulp until obtain concentration, stop to add water, then carry out again at normal temperatures the second time and stir, after evenly, put into adjustment tank 2;
3) add the PH that acidic activator is adjusted flotation tailing pulp in adjustment tank 2, and stir for the third time, after stable, obtain adding the ore pulp of acidic activator, then the ore pulp with described adding acidic activator of continuous uniform is put into restrain tank 3;
4) keeping the concentration of the ore pulp of described adding acidic activator in restrain tank 3 is 30%～35%, add compound inhibitor 1.0～2.0kg/t, then carry out the 4th time and stir, stir and carry out simultaneously continuous feed, blowing, obtain adding the ore pulp of compound inhibitor
5) ore pulp of the compound inhibitor of adding that obtains in the step 4) is put into tank diameter 4, add flotation agent while stir continuous uniform ground by 400～800 grams/ton, and add 2# oil foaming agent by 60～120 grams/ton, obtain adding the ore pulp of flotation agent;
6) ore pulp of the adding flotation agent that obtains in the step 5) is put into flotation cell 5 and carry out successively a closed circuit flotation, roughly select through one-level, secondary is closed circuit to be scanned, and secondary is closed circuit selected, obtains the sulphur concentrate and once selects the sulphur mine tailing;
7) the sulphur concentrate that obtains in the step 6) is pumped into dehydration in the first filter press 9 through first dozen of ore deposit pump 8, get highgrade pyrite concentrate;
8) the sulphur mine tailing that once selects that obtains in the step 6) is squeezed in the high-efficiency helical chute 7 with second dozen of ore deposit pump 6, under the effect of gravity and centrifugal force the low-grade sulphur concentrate of output sulfur-bearing 15～20% and sulfur-bearing less than 3% select the sulphur mine tailing;
9) the low-grade sulphur concentrate of the sulfur-bearing 15～20% that obtains in the step 8) is put into flotation cell 5, carry out the secondary flotation operation, the final high-sulfur concentrate of output sulfur-bearing more than 46%;
10) with the sulfur-bearing that obtains in the step 8) less than 3% select the sulphur mine tailing to put into the second filter press 10 to dewater, obtain selecting behind the sulphur solution and select the sulphur mine tailing.
The invention has the beneficial effects as follows: the present invention adopts the low-grade sulphur concentrate of high-efficiency helical chute gravity separation machinery output sulfur-bearing 15～20%, low-grade sulphur concentrate carries out floatation process through copper sulphate for activation, the suitable collecting agent of interpolation and foaming agent, make the sulfur mineral in the direct cyanidation tailings of Gold Concentrate under Normal Pressure be able to the flotation recovery thoroughly, the sulphur grade reaches more than 46% in the sulphur concentrate, the sulphur grade is less than 3.0% in the flotation tailing, the overall recovery of sulphur reaches more than 95%, greatly improve the comprehensive utilization effect of resource, reduce the wasting of resources.
Spiral chute is the characteristics that combine spiral concentrator, spiral chute, shaking table, centrifugal ore separator, is that the placer mining in best equipment, particularly beach, riverside, sand waste, small stream road of mining, ore dressing is even more ideal.Be applicable to iron ore, ilmenite, chromite, troilite, zircon, rutile, monazite, phosphorus second ore deposit, tungsten ore, tin ore, tantalum ore, the niobium minerals of 0.3～0.02 millimeter fines of sorting granularity and other non-ferrous metals, rare metal and the nonmetallic ore object with difference of specific gravity.
Spiral chute is erected, the calibration vertical line, with brandreth or wooden fixing in place, by sand pump ore in sand form is delivered to two charging aperture places, top on the spiral, add supplementing water, regulate ore deposit oar concentration, oar nature in ore deposit produces a kind of centrifugal force of inertia from height eddy flow down in the inclined-plane flow velocity of rotation, with the proportion of ore in sand form, granularity, in shape difference, the effect of gravity and centrifugal force by eddy flow, Jiang Kuang separates with sand, and concentrate flows into the concentrate bucket and picks out with pipeline, and tailings flows to the tailings bucket and receives the sand pond with pipeline, drain with sand pump again, finished the overall process of ore dressing.
A described closed circuit flotation is roughly selected through one-level, and secondary is closed circuit to be scanned, and the ore pulp that the closed circuit selected concrete finger of secondary adds behind the flotation agent enters the one-level rougher cell, and output is roughly selected concentrate and entered the selected flotation cell of one-level, and rougher tailings enters one-level and scans flotation cell; The selected concentrate of one-level enters the selected flotation cell of secondary, and the one-level cleaner tailings returns the one-level rougher cell; The sulphur concentrate pulp of the selected flotation output quality of secondary percentage concentration 20%-30%, the secondary cleaner tailings returns the selected flotation cell of one-level; The one-level scavenger concentrate returns the one-level rougher cell, and one-level is scanned mine tailing and entered secondary and scan flotation cell, and the secondary scavenger concentrate enters one-level and scans flotation cell, and secondary is scanned mine tailing and namely selected the sulphur mine tailing; Concentrate pulp and mine tailing ore pulp adopt respectively the filter press press filtration.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described flotation agent is butyl xanthate.
Butyl xanthate claims again sodium n-butyl-xanthate, and outward appearance is yellow or pale yellow powder.Molecular formula: C
4H
9OCSSNa, molecular weight: 172.3.Main collecting agent as nonferrous metals ore and the flotation of rare metal ore deposit.
Further, the acidic activator that adopts in the ore dressing has usually: any one in copper sulphate, vulcanized sodium, ammonium chloride, the plumbi nitras etc.
Further, the compound inhibitor that adopts in the ore dressing has usually: any one in lime, potassium ferrocyanide, sulfur dioxide, Cymag, zinc sulfate, waterglass, tannin, starch, the artificial synthesising macromolecule copolymer etc.
Further, in step 3), the PH of described flotation tailing pulp is 5.0～6.0; The described process conditions that stir for the third time are: mixing time is 30～120 minutes, controls simultaneously PH between 5.0～6.0.
Further, in step 4), described mixing time of carrying out stirring for the 4th time is 30～60 minutes.
Further, in step 5), described sulphur concentrate is sulfur-bearing greater than 46.00% sulphur concentrate; Described once select the sulphur mine tailing be sulfur-bearing 5～8% once select the sulphur mine tailing.
Description of drawings
Fig. 1 is the process chart that the present invention improves the method for the direct cyanidation tailings flotation of sulfur concentrate of the Gold Concentrate under Normal Pressure rate of recovery;
In the accompanying drawing, the list of parts of each label representative is as follows:
1, surge tank, 2, adjustment tank, 3, restrain tank, 4, tank diameter, 5, flotation cell, 6, second dozens of ore deposit pumps, 7, spiral chute, 8, second dozens of ore deposit pumps, 9, the first filter presses, the 10, second filter press.
The specific embodiment
Below in conjunction with accompanying drawing principle of the present invention and feature are described, institute gives an actual example and only is used for explaining the present invention, is not be used to limiting scope of the present invention.
The embodiment that below provides is the result of random sampling in large-scale production process.
Embodiment
The direct cyanidation tailings of Gold Concentrate under Normal Pressure is selected mine tailing behind the copper, and water is adjusted pulp density 30%～35% in surge tank 1, under the normal temperature, continuous stirring evenly after, put into adjustment tank 2.
Adjustment tank 2 adds acidic activators to be adjusted between ore pulp acidity PH=5.0～6.0, continuous stirring 30～120 minutes, between control PH=5.0～6.0, after stable, continuous uniform ore pulp is put into restrain tank 3.
Keep pulp density 30%～35% in the restrain tank 3, add compound inhibitor 1.0～2.0kg/t, continuous stirring 30～60 minutes, and continuous feed, blowing, ore pulp enters in the tank diameter 4.
Tank diameter 4 adds flotation agent (butyl xanthate) while stirring continuous uniform ground by 400～800 grams/ton, and by 60～120 grams/ton, adds 2# oil foaming agent, continuously stirs.
A flotation: the ore pulp that adds flotation agent enters flotation cell 5 closed circuit flotation, roughly selects through one-level, and secondary is closed circuit to be scanned, and secondary is closed circuit selected, and sulfur mineral is obtained the sulphur concentrate and once selects the sulphur mine tailing by enrichment.
One time the sulphur concentrate pumps into dehydration in the first filter press 9 through first dozen of ore deposit pump 8, gets highgrade pyrite concentrate.
Gravity separation: once select the sulphur mine tailing to squeeze into high-efficiency helical chute 7 with second dozen of ore deposit pump 6, under the effect of gravity and centrifugal force the low-grade sulphur concentrate of output sulfur-bearing 15～20% and sulfur-bearing less than 3% select the sulphur mine tailing.
Secondary flotation: the low-grade sulphur concentrate of sulfur-bearing 15～20% enters flotation cell 5, carries out the secondary flotation operation, the final high-sulfur concentrate of output sulfur-bearing more than 46%.Sulfur-bearing less than 3% select the sulphur mine tailing through dehydration in the second filter press 10, filtrate is namely selected behind the sulphur liquid to return and is selected the sulphur operation.Filter cake namely selects the sulphur tailings impoundment.
Embodiment result of laboratory test and related data
| S% | Productive rate % | Sulfur recovery rate % | |
| The sulphur concentrate | 46.50 | 54.3 | 95.28 |
| Select the sulphur mine tailing | 2.70 | 45.7 | 4.72 |
| Select the sulphur raw ore | 26.50 | 100.00 | 100.00 |
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a method that improves the direct cyanidation tailings flotation of sulfur concentrate of the Gold Concentrate under Normal Pressure rate of recovery is characterized in that, may further comprise the steps:
1) the direct cyanidation tailings of Gold Concentrate under Normal Pressure is selected splicer plants, copper-separating process, output leaded greater than 40% lead concentrate and cupric greater than 10% copper concentrate, remaining is flotation tailing;
2) flotation tailing that obtains in the step 1) is put into surge tank 1, add again entry, and carry out the first time and stir, be 30%～35% flotation tailing pulp until obtain concentration, stop to add water, then carry out again at normal temperatures the second time and stir, after evenly, put into adjustment tank 2;
3) add the PH that acidic activator is adjusted flotation tailing pulp in adjustment tank 2, and stir for the third time, after stable, obtain adding the ore pulp of acidic activator, then the ore pulp with described adding acidic activator of continuous uniform is put into restrain tank 3;
4) keeping the concentration of the ore pulp of described adding acidic activator in restrain tank 3 is 30%～35%, add compound inhibitor 1.0～2.0kg/t, then carry out the 4th time and stir, stir and carry out simultaneously continuous feed, blowing, obtain adding the ore pulp of compound inhibitor
5) ore pulp of the compound inhibitor of adding that obtains in the step 4) is put into tank diameter 4, add flotation agent while stir continuous uniform ground by 400～800 grams/ton, and add 2# oil foaming agent by 60～120 grams/ton, obtain adding the ore pulp of flotation agent;
6) ore pulp of the adding flotation agent that obtains in the step 5) is put into flotation cell 5 and carry out successively a closed circuit flotation, roughly select through one-level, secondary is closed circuit to be scanned, and secondary is closed circuit selected, obtains the sulphur concentrate and once selects the sulphur mine tailing;
7) the sulphur concentrate that obtains in the step 6) is pumped into dehydration in the first filter press 9 through first dozen of ore deposit pump 8, get highgrade pyrite concentrate;
8) the sulphur mine tailing that once selects that obtains in the step 6) is squeezed in the high-efficiency helical chute 7 with second dozen of ore deposit pump 6, under the effect of gravity and centrifugal force the low-grade sulphur concentrate of output sulfur-bearing 15～20% and sulfur-bearing less than 3% select the sulphur mine tailing;
9) the low-grade sulphur concentrate of the sulfur-bearing 15～20% that obtains in the step 8) is put into flotation cell 5, carry out the secondary flotation operation, the final high-sulfur concentrate of output sulfur-bearing more than 46%;
10) with the sulfur-bearing that obtains in the step 8) less than 3% select the sulphur mine tailing to put into the second filter press 10 to dewater, obtain selecting behind the sulphur solution and select the sulphur mine tailing.
2. the method for the direct cyanidation tailings flotation of sulfur concentrate of the raising Gold Concentrate under Normal Pressure according to claim 1 rate of recovery is characterized in that, described flotation agent is butyl xanthate.
3. the method for the direct cyanidation tailings flotation of sulfur concentrate of the raising Gold Concentrate under Normal Pressure according to claim 1 rate of recovery is characterized in that, described acidic activator comprises any one in copper sulphate, vulcanized sodium, ammonium chloride, the plumbi nitras.
4. the method for the direct cyanidation tailings flotation of sulfur concentrate of the raising Gold Concentrate under Normal Pressure according to claim 1 rate of recovery, it is characterized in that, described compound inhibitor comprises any one in lime, potassium ferrocyanide, sulfur dioxide, Cymag, zinc sulfate, waterglass, tannin, starch, the artificial synthesising macromolecule copolymer.
5. according to claim 1 to the method for the direct cyanidation tailings flotation of sulfur concentrate of 4 each the described raising Gold Concentrate under Normal Pressure rate of recovery, it is characterized in that, in step 3), the PH of described flotation tailing pulp is 5.0～6.0; The described process conditions that stir for the third time are: mixing time is 30～120 minutes, controls simultaneously PH between 5.0～6.0.
6. according to claim 1 to the method for the direct cyanidation tailings flotation of sulfur concentrate of 4 each the described raising Gold Concentrate under Normal Pressure rate of recovery, it is characterized in that, in step 4), described mixing time of carrying out stirring for the 4th time is 30～60 minutes.
7. according to claim 1 to the method for the direct cyanidation tailings flotation of sulfur concentrate of 4 each the described raising Gold Concentrate under Normal Pressure rate of recovery, it is characterized in that, in step 5), described sulphur concentrate is sulfur-bearing greater than 46.00% sulphur concentrate; Described once select the sulphur mine tailing be sulfur-bearing 5～8% once select the sulphur mine tailing.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104259007A (en) * | 2014-09-17 | 2015-01-07 | 招远市招金贵合科技有限公司 | Device and method for removing harmful impurities before cyanidation tailing flotation for high-grade sulphur concentrate |
| CN104646185A (en) * | 2015-02-03 | 2015-05-27 | 东北大学 | Method for recovering copper, lead and zinc from ultra-fine complicated cyanidation tailings |
| CN108940604A (en) * | 2018-07-27 | 2018-12-07 | 攀枝花学院 | Marmatite flotation activating and its preparation method and application |
| CN109590107A (en) * | 2019-01-02 | 2019-04-09 | 长沙有色冶金设计研究院有限公司 | A kind of technique of Recovered sulphur and valuable metal from copper oxygen leaching slag |
| CN111715413A (en) * | 2020-07-16 | 2020-09-29 | 山东国大黄金股份有限公司 | Method for enriching sulfur concentrate by flotation of tailings generated in lead and copper separation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104259007A (en) * | 2014-09-17 | 2015-01-07 | 招远市招金贵合科技有限公司 | Device and method for removing harmful impurities before cyanidation tailing flotation for high-grade sulphur concentrate |
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Application publication date: 20130206 |