CN104120252A - Ore pulp cooling method and device for pressurized oxygen leaching of zinc sulfide concentrate - Google Patents
Ore pulp cooling method and device for pressurized oxygen leaching of zinc sulfide concentrate Download PDFInfo
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- CN104120252A CN104120252A CN201410358066.8A CN201410358066A CN104120252A CN 104120252 A CN104120252 A CN 104120252A CN 201410358066 A CN201410358066 A CN 201410358066A CN 104120252 A CN104120252 A CN 104120252A
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- ore pulp
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- thickener
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The invention discloses an ore pulp cooling method for pressurized oxygen leaching of a zinc sulfide concentrate. The method comprises the following steps: (a) the pressurized oxygen leaching is performed for the zinc sulfide concentrate to obtain ore pulp; (b) the ore pulp in the step (a) is discharged in a flash tank; and the exhaust pressure in the flash tank is adjusted to reduce the temperature and pressure of the ore pulp in the flash tank; and (c) the ore pulp in the flash tank is discharged in a thickener, and is cooled and separated by the thickener. A device suitable for the method comprises a high-pressure kettle, a discharge valve, the flash tank and the thickener, wherein an air release valve is arranged on the flash tank; the air release pressure of the air release valve is higher than or equal to one atmospheric pressure; the discharge valve is communicated between the high-pressure kettle and the flash tank; and the flash tank and the thickener are communicated through a discharge pipe or an overflow sealing groove. The method can prevent the deposition of grown elemental sulfur, and has the advantages of simple equipment and allocations, good cooling effect and no blockage.
Description
Technical field
The invention belongs to technical field of wet metallurgy, relate in particular to a kind of ore pulp method of cooling and device of zinc sulfide concentrates pressure leaching.
Background technology
Zinc sulfide concentrates pressure leaching is to carry out under high-temperature and high-pressure conditions, for meeting subsequent handling requirement, must carry out decrease temperature and pressure to High Temperature High Pressure ore pulp, makes ore pulp after decrease temperature and pressure enter purification, electrodeposition and the flotation operation of normal pressure operating mode.
At present, High Temperature High Pressure ore pulp to pressure leaching, traditional decrease temperature and pressure method is to adopt flash distillation---regulative mode, as shown in Figure 3, flash distillation is that High Temperature High Pressure ore pulp is entered to a container b by blow-off valve a, and this container is equipped with a gas and diffuses variable valve c, set flashing pressure, the exhaust of regulated valve open degree, makes the instantaneous volume of High Temperature High Pressure ore pulp become large, reaches the object of decrease temperature and pressure; Ore pulp after flash distillation also keeps certain pressure to enter regulating tank d, and the effect of regulating tank is that ore pulp is continued to decrease temperature and pressure, therefore, regulating tank will keep certain high liquid level, general mineral pulp level is 5～8 meters, utilizes ore pulp proportion to carry out equilibrium pressure, prevents that ore pulp in regulating tank from " emitting groove "; Meanwhile, regulating tank is also wanted cooling ore pulp, makes molten sulfur oxidized from zinc sulfide concentrates, and being transformed into can flotation and the elemental sulfur of heat filtering; At the cooled ore pulp of regulating tank, enter thickener e (or swirler) separation, isolate supernatant liquor and send purification, zinc ingot metal is produced in electrodeposition and founding, and underflow send flotation output sulphur concentrate and mine tailing, and sulphur concentrate can further adopt hot filter method to produce sulphur.
Because regulating tank is an encloses container, in order to prevent corrosion, cell body is generally all lined with acid resisting brick, and length-to-diameter ratio is larger, and cooling area is little, and the elemental sulfur of growing up in ore pulp is easily deposited on cell body bottom and results in blockage, and poor to the cooling performance of ore pulp; For this reason, part user can increase water-cooled coil pipe f and strengthen cooling performance in regulating tank, once operation control is improper like this, will make molten sulfur in ore pulp grow up fast, by occlusion adjustments groove, in actual production, also often occur due to ore pulp cooling temperature control improper, occlusion adjustments groove and cause the situation of stop production to overhaul.
Summary of the invention
The object of the present invention is to provide a kind of its molten sulfur that can solve in the ore pulp decrease temperature and pressure process of cooling of zinc sulfide concentrates pressure leaching to grow up fast and stop up the problem of production system, molten sulfur oxidized from zinc sulfide concentrates is transformed into can flotation and ore pulp method of cooling and the device of the zinc sulfide concentrates pressure leaching of the elemental sulfur of heat filtering.
The ore pulp method of cooling of this zinc sulfide concentrates pressure leaching provided by the invention, comprises the steps:
A, zinc sulfide concentrates is carried out to pressure leaching obtain ore pulp;
B, the ore pulp in step a is entered in flash drum, regulate the exhaust pressure in flash drum to carry out decrease temperature and pressure to the ore pulp in flash drum;
C, the ore pulp in flash drum is entered in thickener, by thickener, it is carried out to refrigerated separation.
In described step a, zinc sulfide concentrates carries out pressure leaching by autoclave.
In described step b, the ore pulp in step a enters in flash drum by blow-off valve.
When the exhaust pressure in described step b in flash drum is a normal atmosphere, the ore pulp in described step c in flash drum is entered in thickener and by thickener it is carried out to refrigerated separation by drainage conduit.
When the exhaust pressure in described step b in flash drum is greater than a normal atmosphere, ore pulp in described step c in flash drum is first entered in an excessive sealing groove and is carried out fluid-tight by it by drainage conduit, then the ore pulp in the sealing groove that overflows is entered in thickener and by thickener it is carried out to refrigerated separation by drainage conduit.
A kind of device that is applicable to the ore pulp method of cooling after above-mentioned zinc sulfide concentrates pressure leaching, it is characterized in that: this device comprises the autoclave for splendid attire zinc sulfide concentrates, blow-off valve, flash drum and for the thickener of refrigerated separation ore pulp, on described flash drum, be provided with a vent valve, the exhaust pressure of described vent valve is more than or equal to a normal atmosphere, described blow-off valve is communicated between autoclave and flash drum, between described flash drum and thickener, by a drainage conduit or sealing groove that overflows, be communicated with, described excessive sealing groove is arranged on the top of flash drum, described flash drum is communicated with by drainage conduit with the bottom of excessive sealing groove, the top of described excessive sealing groove is communicated with thickener.
The exhaust pressure that described vent valve is set is a normal atmosphere, between described flash drum and thickener, by a drainage conduit, is communicated with.
The exhaust pressure that described vent valve is set is greater than a normal atmosphere, between described flash drum and thickener, by the sealing groove that overflows, be communicated with, described excessive sealing groove is arranged on the top of flash drum, and described flash drum is communicated with by drainage conduit with the bottom of excessive sealing groove, and the top of described excessive sealing groove is communicated with thickener.
Compared with prior art, advantage of the present invention is as follows:
One, flash drum being discharged to ore pulp adopts drainage conduit to carry, in pipeline, there is certain pressure to be delivered to excessive sealing groove, by excessive sealing groove, ore pulp has been formed to " fluid-tight ", not only can prevent the elemental sulfur deposition of growing up, also realized and utilized mineral pulp level and proportion to come equilibrium flash vaporization groove to discharge the pressure of ore pulp, equipment and configuration are more simple.
Two, utilize thickener to carry out ore pulp cooling and separated, reach the cooling and separated object of ore pulp simultaneously, not only cancelled regulating tank, reduced facility investment, optimized equipment configuration, and because thickener surface-area is large, its cooling performance is much larger than regulating tank, and the elemental sulfur of growing up in ore pulp process of cooling can not result in blockage to thickener yet.
Accompanying drawing explanation
Fig. 1 is structural representation one of the present invention.
Fig. 2 is structural representation two of the present invention.
Fig. 3 is the structural representation of prior art.
Embodiment
Embodiment mono-
The ore pulp method of cooling of this zinc sulfide concentrates pressure leaching of the present invention, comprises the steps:
A, zinc sulfide concentrates is placed in and in autoclave, carries out the High Temperature High Pressure ore pulp that pressure leaching obtains 145～155 ℃ of temperature, pressure 1100～1300Kpa;
B, the High Temperature High Pressure ore pulp in autoclave is entered in flash drum by blow-off valve, the exhaust pressure of setting flash drum is a normal atmosphere, and High Temperature High Pressure ore pulp is realized decrease temperature and pressure by flash drum;
C, the ore pulp in flash drum is entered in thickener by drainage conduit, by thickener, it is carried out to refrigerated separation.
As shown in Figure 1, ore pulp refrigerating unit after this zinc sulfide concentrates pressure leaching of the present invention, comprise autoclave 1, blow-off valve 2, flash drum 3 and thickener 5, on flash drum 3, be provided with a vent valve 31, the exhaust pressure of vent valve 31 is a normal atmosphere, zinc sulfide concentrates is placed in autoclave 1, and blow-off valve 2 is communicated between autoclave 1 and flash drum 3, between flash drum 3 and thickener 5, by a drainage conduit 32, is communicated with.
Embodiment bis-
The ore pulp method of cooling of this zinc sulfide concentrates pressure leaching of the present invention, comprises the steps:
A, zinc sulfide concentrates is placed in and in autoclave, carries out the High Temperature High Pressure ore pulp that pressure leaching obtains 145～155 ℃ of temperature, pressure 1100～1300Kpa;
B, the High Temperature High Pressure ore pulp in autoclave is entered in flash drum by blow-off valve, the exhaust pressure of setting flash drum is 200Kpa, and High Temperature High Pressure ore pulp is realized decrease temperature and pressure by flash drum;
C, the ore pulp in flash drum is entered to one by drainage conduit overflow in sealing groove and carry out fluid-tight by it, the ore pulp that in the sealing groove that overflows, approximately 95～102 ℃ of temperature, pressure are normal pressure is entered in thickener by drainage conduit, by thickener, it is carried out to refrigerated separation.
As shown in Figure 2, ore pulp refrigerating unit after this zinc sulfide concentrates pressure leaching of the present invention, comprise autoclave 1, blow-off valve 2, flash drum 3, excessive sealing groove 4 and thickener 5, on flash drum 3, be provided with a vent valve 31, the exhaust pressure of vent valve 31 is 200Kpa, zinc sulfide concentrates is placed in autoclave 1, blow-off valve 2 is communicated between autoclave 1 and flash drum 3, the sealing groove 4 that overflows is arranged on the top of flash drum 3, flash drum 3 is communicated with by a drainage conduit 32 with the bottom of excessive sealing groove 4, and the top of the sealing groove 4 that overflows is communicated with thickener 5.
In above-mentioned two embodiment, the supernatant liquor being cooled and isolated by thickener send purification, electrodeposition and founding to produce zinc ingot metal, and underflow send flotation output sulphur concentrate and mine tailing, the recyclable plumbous silver of mine tailing, and sulphur concentrate can further adopt hot filter method to produce sulphur.
In the present invention, flash drum 3 can be arranged in to ground, can shorten flash drum 3 feed-pipes and drainage conduit 32 length, be convenient to pipeline cleaning.
In actual production, carry out following transformation in only need the ore pulp refrigerating unit after existing zinc sulfide concentrates pressure leaching and can obtain the embodiment of the present invention one:
1, at container b(, be flash drum) with thickener e between be connected a drainage conduit, make original regulating tank realize short circuit.
2, open blow-off valve a, make in autoclave the High Temperature High Pressure ore pulp of pressure leaching (145～155 ℃ of temperature, pressure 1100～1300Kpa) enter container b, it is a normal atmosphere that setting gas diffuses variable valve c exhaust pressure, ore pulp enters thickener e by its direct refrigerated separation through container b decrease temperature and pressure by drainage conduit, isolating supernatant liquor send purification, electrodeposition and founding to produce zinc ingot metal, underflow send flotation output sulphur concentrate and mine tailing, the recyclable plumbous silver of mine tailing, sulphur concentrate can further adopt hot filter method to produce sulphur.
In actual production, carry out following transformation in only need the ore pulp refrigerating unit after existing zinc sulfide concentrates pressure leaching and can obtain the embodiment of the present invention two:
1, above original regulating tank d, set up an excessive sealing groove 4.
2, at container b(, be flash drum respectively) with the bottom of excessive sealing groove 4, be connected a drainage conduit between the top of the sealing groove 4 that overflows and thickener e, make original regulating tank realize short circuit.
3, open blow-off valve a, make in autoclave the High Temperature High Pressure ore pulp of pressure leaching (145～155 ℃ of temperature, pressure 1100～1300Kpa) enter container b, it is 200Kpa that setting gas diffuses variable valve c exhaust pressure, ore pulp enters by drainage conduit the sealing groove 4 that overflows through container b decrease temperature and pressure, excessive sealing groove 4 ore pulps (approximately 95～102 ℃ of temperature, pressure is normal pressure) enter thickener e by its direct refrigerated separation, isolate supernatant liquor and send purification, zinc ingot metal is produced in electrodeposition and founding, underflow send flotation output sulphur concentrate and mine tailing, the recyclable plumbous silver of mine tailing, sulphur concentrate can further adopt hot filter method to produce sulphur.
Claims (8)
1. an ore pulp method of cooling for zinc sulfide concentrates pressure leaching, is characterized in that: the method comprises the steps:
A, zinc sulfide concentrates is carried out to pressure leaching obtain ore pulp;
B, the ore pulp in step a is entered in flash drum, regulate the exhaust pressure in flash drum to carry out decrease temperature and pressure to the ore pulp in flash drum;
C, the ore pulp in flash drum is entered in thickener, by thickener, it is carried out to refrigerated separation.
2. the ore pulp method of cooling of zinc sulfide concentrates pressure leaching according to claim 1, is characterized in that: in described step a, zinc sulfide concentrates carries out pressure leaching by autoclave.
3. the ore pulp method of cooling of zinc sulfide concentrates pressure leaching according to claim 1, is characterized in that: in described step b, the ore pulp in step a enters in flash drum by blow-off valve.
4. the ore pulp method of cooling of zinc sulfide concentrates pressure leaching according to claim 1, it is characterized in that: when the exhaust pressure in described step b in flash drum is a normal atmosphere, the ore pulp in described step c in flash drum is entered in thickener and by thickener it is carried out to refrigerated separation by drainage conduit.
5. the ore pulp method of cooling of zinc sulfide concentrates pressure leaching according to claim 1, it is characterized in that: when the exhaust pressure in described step b in flash drum is greater than a normal atmosphere, ore pulp in described step c in flash drum is first entered in an excessive sealing groove and is carried out fluid-tight by it by drainage conduit, then the ore pulp in the sealing groove that overflows is entered in thickener and by thickener it is carried out to refrigerated separation by drainage conduit.
6. a device that is applicable to the ore pulp method of cooling after zinc sulfide concentrates pressure leaching claimed in claim 1, it is characterized in that: this device comprises the autoclave for splendid attire zinc sulfide concentrates, blow-off valve, flash drum and for the thickener of refrigerated separation ore pulp, on described flash drum, be provided with a vent valve, the exhaust pressure of described vent valve is more than or equal to a normal atmosphere, described blow-off valve is communicated between autoclave and flash drum, between described flash drum and thickener, by a drainage conduit or sealing groove that overflows, be communicated with, described excessive sealing groove is arranged on the top of flash drum, described flash drum is communicated with by drainage conduit with the bottom of excessive sealing groove, the top of described excessive sealing groove is communicated with thickener.
7. the device of the ore pulp method of cooling after zinc sulfide concentrates pressure leaching according to claim 6, is characterized in that: the exhaust pressure that described vent valve is set is a normal atmosphere, between described flash drum and thickener, by a drainage conduit, is communicated with.
8. the device of the ore pulp method of cooling after zinc sulfide concentrates pressure leaching according to claim 6, it is characterized in that: the exhaust pressure that described vent valve is set is greater than a normal atmosphere, between described flash drum and thickener, by the sealing groove that overflows, be communicated with, described excessive sealing groove is arranged on the top of flash drum, described flash drum is communicated with by drainage conduit with the bottom of excessive sealing groove, and the top of described excessive sealing groove is communicated with thickener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410358066.8A CN104120252A (en) | 2014-07-25 | 2014-07-25 | Ore pulp cooling method and device for pressurized oxygen leaching of zinc sulfide concentrate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410358066.8A CN104120252A (en) | 2014-07-25 | 2014-07-25 | Ore pulp cooling method and device for pressurized oxygen leaching of zinc sulfide concentrate |
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| CN104120252A true CN104120252A (en) | 2014-10-29 |
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| CN201410358066.8A Pending CN104120252A (en) | 2014-07-25 | 2014-07-25 | Ore pulp cooling method and device for pressurized oxygen leaching of zinc sulfide concentrate |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222404A (en) * | 2016-09-23 | 2016-12-14 | 中国恩菲工程技术有限公司 | The recovery system of valuable metal |
| CN113244855A (en) * | 2021-06-21 | 2021-08-13 | 中国恩菲工程技术有限公司 | Flash tank and smelting pressurization system |
| CN115478175A (en) * | 2022-08-29 | 2022-12-16 | 金川集团股份有限公司 | Pressurized kettle discharge equipment and method thereof |
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| CN102618719A (en) * | 2012-04-17 | 2012-08-01 | 长沙有色冶金设计研究院有限公司 | Method for directly leaching zinc and recovering gallium, germanium and indium from zinc sulfide concentrate |
| CN102796868A (en) * | 2012-09-12 | 2012-11-28 | 长沙有色冶金设计研究院有限公司 | Production process for directly leaching zinc from zinc sulfide concentrate |
| CN203403143U (en) * | 2013-08-27 | 2014-01-22 | 广西华锡集团股份有限公司 | Deironing device used in zinc hydrometallurgy production |
| CN103866120A (en) * | 2014-03-25 | 2014-06-18 | 长沙有色冶金设计研究院有限公司 | Method for leaching zinc and recovering valuable metals through carrying out pressurized oxidation on zinc sulfide concentrates |
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- 2014-07-25 CN CN201410358066.8A patent/CN104120252A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102618719A (en) * | 2012-04-17 | 2012-08-01 | 长沙有色冶金设计研究院有限公司 | Method for directly leaching zinc and recovering gallium, germanium and indium from zinc sulfide concentrate |
| CN102796868A (en) * | 2012-09-12 | 2012-11-28 | 长沙有色冶金设计研究院有限公司 | Production process for directly leaching zinc from zinc sulfide concentrate |
| CN203403143U (en) * | 2013-08-27 | 2014-01-22 | 广西华锡集团股份有限公司 | Deironing device used in zinc hydrometallurgy production |
| CN103866120A (en) * | 2014-03-25 | 2014-06-18 | 长沙有色冶金设计研究院有限公司 | Method for leaching zinc and recovering valuable metals through carrying out pressurized oxidation on zinc sulfide concentrates |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106222404A (en) * | 2016-09-23 | 2016-12-14 | 中国恩菲工程技术有限公司 | The recovery system of valuable metal |
| CN106222404B (en) * | 2016-09-23 | 2019-04-09 | 中国恩菲工程技术有限公司 | The recovery system of valuable metal |
| CN113244855A (en) * | 2021-06-21 | 2021-08-13 | 中国恩菲工程技术有限公司 | Flash tank and smelting pressurization system |
| CN115478175A (en) * | 2022-08-29 | 2022-12-16 | 金川集团股份有限公司 | Pressurized kettle discharge equipment and method thereof |
| CN115478175B (en) * | 2022-08-29 | 2023-11-21 | 金川集团股份有限公司 | Pressurized kettle discharging equipment and method thereof |
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Application publication date: 20141029 |