CN104178627B - A kind of pre-press system of gold mine - Google Patents
A kind of pre-press system of gold mine Download PDFInfo
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- CN104178627B CN104178627B CN201410414647.9A CN201410414647A CN104178627B CN 104178627 B CN104178627 B CN 104178627B CN 201410414647 A CN201410414647 A CN 201410414647A CN 104178627 B CN104178627 B CN 104178627B
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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 the pre-press system of a kind of gold mine, including the mixing tank for coating colors being sequentially communicated, feed pump, heat exchanger, oxygen agitated autoclave and tubular type autoclave, the ore pulp entrance of described oxygen agitated autoclave connects with pressure filter, the outlet of described tubular type autoclave and the ore pulp inlet communication of one section of flash tank, the slurry outlet of described one section of flash tank connects with the ore pulp entrance of two-stage nitration flash tank, the described gas outlet of one section of flash tank connects with the gas access of heat exchanger, described two-stage nitration flash tank slurry outlet connects with pressure filter entrance, the gas outlet of described two-stage nitration flash tank connects with tourie entrance, the outlet of described tourie is in described mixing tank for coating colors.This system can process As < 22%, the C < golden ore concentrate hard to treat of 5%.Due to its High Temperature High Pressure oxidation environment, it is possible to effectively pyrite is for " the robbing gold effect " of golden parcel and carbonaceous thing, and arsenic will be removed in a large number in preprocessing process.
Description
Technical field
The present invention relates to the pre-press system of a kind of gold mine, be particularly suited for belonging to containing the difficult metallurgical of high arsenic high carbonaceous thing.
Background technology
Refractory Au-ores reserves account for the 30% of world's gold mine gross reserves.Along with the day by day exhaustion of world's gold ore resource, Refractory Au-ores is paid close attention to by people gradually.At China's Refractory Au-ores mainly based on Carlin-type gold ore, wherein the gold mine intractability of high arsenic high carbonaceous thing is maximum.Such Ore adopts conventional cyanidation extraction of gold process to process, and the leaching rate of gold is very low.Therefore such Ore need to first carry out pretreatment, then carry out cyaniding again.
At present, in the preprocess method of such mineral, pressure oxidation method is adopted by each manufacturing enterprise gradually because being absent from the advantages such as problem of environmental pollution, pretreated gold mine cyaniding efficiency is high, gold ore pretreatment scale is changeable and having clear superiority compared with its method method.Its pressurized equipment is constantly modified also with the development of pressure oxidation preconditioning technique.
In such difficult-treating gold mine, gold is often contaminated in the sulphide ore such as mispickel, pyrite with the form of micro-or secondary micro-even Lattice Gold.By pressure oxidation process, it is possible to the sulphide ore in Gold Concentrate under Normal Pressure is aoxidized thus being conducive to cyanating solution to contact with golden.Such Gold Concentrate under Normal Pressure contingent dominant response in oxidizing process is as follows:
2FeS2+2H2SO4+O2=2FeSO4+2S0+2H2O
S0+H2O+3/2O2=H2SO4
FeS2+Fe2(SO4)3=3FeSO4+S0
2FeSO4+H2SO4+1/2O2=Fe2(SO4)3+H2O
When reaction temperature is within the scope of 100～150 DEG C, one layer of hydrophobicity elementary sulfur film of the oxidized formation in Gold Concentrate under Normal Pressure surface hinders cyanating solution to contact with golden.This elementary sulfur film is difficult to destroyed in sulphuric acid immersion, need to add HNO3And Fe3+The destruction of sulfur film is accelerated Deng catalyst.Under this processing environment, based on the consideration of material corrosion resisting property, reactor material must adopt pure titanium or titanium composite panel just can meet instructions for use.Meanwhile, also need after this pretreatment to carry out the elementary sulfur film that Calx alkalescence pretreatment is remaining to remove mineral surfaces further again.This also makes preprocessing process tediously long, complicated operation, and processing cost rises.
When pretreatment temperature reaches 170～190 DEG C, the sulfur generated in Gold Concentrate under Normal Pressure oxidizing process is completely oxidized, and reaction can a step be done directly, thus simplifying operation.But so harsh processing environment proposes high requirement for the corrosion resistance of reactor and the material of corollary system.Meanwhile, this process technique needs the longer process time (2～4h), hinders the raising of manufacturing enterprise's economic benefit to a certain extent.
Summary of the invention
It is an object of the invention to provide the pre-press system of a kind of gold mine, to overcome deficiency of the prior art.
For achieving the above object, the present invention provides following technical scheme:
The embodiment of the invention discloses the pre-press system of a kind of gold mine, including the mixing tank for coating colors being sequentially communicated, feed pump, heat exchanger, oxygen agitated autoclave and tubular type autoclave, the ore pulp entrance of described oxygen agitated autoclave connects with pressure filter, the outlet of described tubular type autoclave and the ore pulp inlet communication of one section of flash tank, the slurry outlet of described one section of flash tank connects with the ore pulp entrance of two-stage nitration flash tank, the described gas outlet of one section of flash tank connects with the gas access of heat exchanger, described two-stage nitration flash tank slurry outlet connects with pressure filter entrance, the gas outlet of described two-stage nitration flash tank connects with tourie entrance, the outlet of described tourie is in described mixing tank for coating colors.
Preferably, in the pre-press system of above-mentioned gold mine, described oxygen agitated autoclave material is 316L type rustless steel, and its kettle includes cell body, central canal, oviduct, downspout, nozzle, bottom land and air chamber.
Preferably, in the pre-press system of above-mentioned gold mine, the diameter of described central canal is 0.2～1m.
Preferably, in the pre-press system of above-mentioned gold mine, the material of described tubular type autoclave is 316L type rustless steel.
Preferably, in the pre-press system of above-mentioned gold mine, described feed pump is reciprocating pump.
Preferably, in the pre-press system of above-mentioned gold mine, the material of described reciprocating pump is 316L type rustless steel.
Compared with prior art, it is an advantage of the current invention that: this system has that Gold Concentrate under Normal Pressure pretreatment speed is fast, treatment effeciency is high, to the advantage such as equipment and materials requirement is low.Simultaneously as its efficient oxidation environment having and the feature such as processing environment is totally-enclosed, can process containing the gold floatation concentrate that arsenic is up to 22% and carbon containing is up to 5%.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The principle schematic of the pre-press system that Fig. 1 show in the specific embodiment of the invention gold mine；
Fig. 2 show in the specific embodiment of the invention to aoxidize the structural representation of agitated autoclave；
The structural representation that Fig. 3 show in the specific embodiment of the invention tubular type autoclave.
Detailed description of the invention
The embodiment of the invention discloses the pre-press system of a kind of gold mine, it includes mixing tank for coating colors, feed pump, oxygen agitated autoclave, tubular type autoclave, flash vessel and tail gas absorption tank.
This system is mainly used in the pretreatment in high arsenic height charcoal difficulty metallurgy ore deposit, and high arsenic height charcoal difficulty metallurgy ore deposit major impurity composition is As < 22%, C < 5%.
Its composition material of oxygen agitated autoclave is 316L type rustless steel, and kettle is made up of cell body, central canal, oviduct, downspout, nozzle, bottom land and air chamber.Central canal coordinates with nozzle, has the effect making gas lift stirring ore pulp.Oxygen flow 50～200m3/t ore deposit, center caliber 0.2～1m, the time of staying < 5min.
Its composition material of tubular type autoclave is 316L type rustless steel, and flow rate of pulp is 0.01～2m/s, center caliber 0.2～1m, the time of staying < 5min.
Its composition material of feed pump is the stainless reciprocating pump of 316L type.
Its composition material of flash vessel is 316L type rustless steel, and in integrated system, supporting flash vessel number is 1～3, and mode is series connection.
The use environment of tubular type autoclave and air stirring autoclave: nitric acid 50～100g/L, sulphuric acid 50～200g/L, reaction temperature 150～220 DEG C, reaction pressure 1～3MPa, ore pulp liquid-solid ratio 3～10, oxidization time < 10min.
In tail gas absorption tank, the liquid that absorbs used is 0.1～1%H2O2Solution.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is described in detail, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the premise not making creative work, broadly fall into the scope of protection of the invention.
Fig. 1 is to shown in 3 for ginseng, and the pre-press system of gold mine includes: mixing tank for coating colors, feed pump, heat exchanger, oxygen agitated autoclave, tubular type autoclave, one section of flash tank, two-stage nitration flash tank, tourie and pressure filter.
The ore pulp entrance of oxygen agitated autoclave 1 connects with heat exchanger slurry outlet and pressure filter 5 filtrate (liquid, and the gas access of oxygen agitated autoclave 1 connects with oxygen row, and the slurry outlet of oxygen agitated autoclave 1 connects with the entrance of tubular type autoclave 2；The outlet of tubular type autoclave 2 and the ore pulp inlet communication of one section of flash tank 3；The slurry outlet of one section of flash tank 1 connects with the ore pulp entrance of two-stage nitration flash tank 2, and the gas outlet of one section of flash tank 1 connects with heat exchanger gas access；Two-stage nitration flash tank 2 slurry outlet connects with pressure filter entrance, and two-stage nitration flash tank 2 gas outlet connects with tourie entrance.
In the present invention, the coupling of oxygen agitated autoclave and tubular type still improves the oxygen utilization rate in preprocessing process and course of reaction mass-and heat-transfer efficiency greatly, and the nitric acid added in leaching environment when pretreatment temperature reaches 170～190 DEG C simultaneously can make pre-treating speed be significantly increased as catalyst.And, metal erosion experiment confirms at HNO3-H2SO4-H2In O system, 316L type rustless steel corrosion rate under 100 DEG C and boiling temperature is no more than 0.1mm/a, therefore uses 316L type rustless steel can meet production requirement as the material of autoclave and corollary equipment in this system.
It should be noted that, in this article, the relational terms of such as first and second or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
The above is only the specific embodiment of the present invention; it should be pointed out that, for those skilled in the art, under the premise without departing from the principles of the invention; can also making some improvements and modifications, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (6)
1. the pre-press system of a gold mine, it is characterized in that, including the mixing tank for coating colors being sequentially communicated, feed pump, heat exchanger, oxygen agitated autoclave and tubular type autoclave, the ore pulp entrance of described oxygen agitated autoclave connects with pressure filter, the outlet of described tubular type autoclave and the ore pulp inlet communication of one section of flash tank, the slurry outlet of described one section of flash tank connects with the ore pulp entrance of two-stage nitration flash tank, the described gas outlet of one section of flash tank connects with the gas access of heat exchanger, described two-stage nitration flash tank slurry outlet connects with pressure filter entrance, the gas outlet of described two-stage nitration flash tank connects with tourie entrance, the outlet of described tourie is in described mixing tank for coating colors.
2. the pre-press system of gold mine according to claim 1, it is characterised in that: described oxygen agitated autoclave material is 316L type rustless steel, and its kettle includes cell body, central canal, oviduct, downspout, nozzle, bottom land and air chamber.
3. the pre-press system of gold mine according to claim 2, it is characterised in that: the diameter of described central canal is 0.2～1m.
4. the pre-press system of gold mine according to claim 1, it is characterised in that: the material of described tubular type autoclave is 316L type rustless steel.
5. the pre-press system of gold mine according to claim 1, it is characterised in that: described feed pump is reciprocating pump.
6. the pre-press system of gold mine according to claim 5, it is characterised in that: the material of described reciprocating pump is 316L type rustless steel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410414647.9A CN104178627B (en) | 2014-08-21 | 2014-08-21 | A kind of pre-press system of gold mine |
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| CN201410414647.9A CN104178627B (en) | 2014-08-21 | 2014-08-21 | A kind of pre-press system of gold mine |
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| CN104178627A CN104178627A (en) | 2014-12-03 |
| CN104178627B true CN104178627B (en) | 2016-07-06 |
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| WO2022217350A1 (en) * | 2021-04-12 | 2022-10-20 | Hatch Ltd. | Hydrometallurgical treatment of ores or concentrates for removal of preg-robbing organic carbon material |
| CN113846213A (en) * | 2021-09-24 | 2021-12-28 | 中国恩菲工程技术有限公司 | Refractory gold ore processing system |
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| CN203530398U (en) * | 2013-10-09 | 2014-04-09 | 北京矿冶研究总院 | Laterite-nickel ore jointly leaches system |
| CN103952546A (en) * | 2014-05-09 | 2014-07-30 | 长沙有色冶金设计研究院有限公司 | Steam heating device and method for pressurized oxygen leaching of zinc sulfide concentrate |
| CN204039461U (en) * | 2014-08-21 | 2014-12-24 | 江苏申港锅炉有限公司 | A kind of pre-press system of gold mine |
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