CN107354307B - The raw ore of no tailing or cyaniding tailing environmental protection extract gold from the method with other metals and brickmaking - Google Patents
The raw ore of no tailing or cyaniding tailing environmental protection extract gold from the method with other metals and brickmaking Download PDFInfo
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- CN107354307B CN107354307B CN201710623533.9A CN201710623533A CN107354307B CN 107354307 B CN107354307 B CN 107354307B CN 201710623533 A CN201710623533 A CN 201710623533A CN 107354307 B CN107354307 B CN 107354307B
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/131—Inorganic additives
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B33/00—Clay-wares
- C04B33/02—Preparing or treating the raw materials individually or as batches
- C04B33/13—Compounding ingredients
- C04B33/132—Waste materials; Refuse; Residues
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Abstract
The raw ore of no tailing or cyaniding tailing environmental protection extract gold from the method with other metals and brickmaking.After first sulphur being extracted for sulfur-bearing raw ore, various metals can be extracted to recycling and the obtained brick for meeting requirement simultaneously by the way that suitable catalyst is added.Suitable catalyst is then directly added into for oxide ore by various metals while can extract to recycle and be made and meet the brick of requirement.Cyaniding tailing then selects sulphur by first decyanation again, the desulfurization effect realized, while recycling various metals and the brick for meeting requirement is made.The method of the present invention has the important value of environmental protection, there is great contribution to social environment.
Description
Technical field
The invention belongs to raw ore or tailings glass technical fields, and in particular to a kind of raw ore or cyaniding tailing ring of no tailing
Protect the method to extract gold from other metals and brickmaking.
Background technique
It with the continually developing of resource, utilizes, tellurian resource reserve is fewer and fewer, and produces, develops and use resource
When a large amount of wastes for generating but in the environment that threaten human lives, affect the life of the mankind.The wherein tail that dressing plant generates
Mine quantity is very more, takes up a large area, and the influence of generation is especially serious.How these wastes effectively to be handled, are disposed
And comprehensive reutilization, it counts for much, there is critically important economic significance and social effect.
Especially in the development process of golden production, the extensive use of cyanidation gold-extracted technology plays critical work
With.Due to using Cyanide Process, a large amount of cyaniding tailing slurry can be generated, this part cyaniding tailing slurry not only contains a certain amount of
Hypertoxic cyanide, but also the heavy metal ion containing copper, zinc, lead etc, if cannot effectively handle, it will generate
Great environmentally friendly hidden danger and security risk.The roasting technique that gold smelting enterprise uses simultaneously can generate a large amount of SO2Flue gas, such as
Fruit cannot effectively administer the atmospheric environment that can seriously affect periphery.Currently, gold smelting industry processing cyaniding tailing slurry
Common method has acidification absorption method, Pomolio-Celdecor process etc..As CN 104876365A discloses a kind of gold industry high concentration cyanogen-containing tailing
Processing method is starched, this method is by four acidization, oxidation reclaiming process, neutralisation and ozone oxidation deep treatment method step groups
At；PH adjusting agent is added in sludge containing cyanogens, pH value is adjusted to 1.8~2.2, using in acidization recycling sludge containing cyanogens
Most of cyanide and heavy metal ion, then regenerative agent is added into Tailings Slurry, Tailings Slurry is removed using oxidation reclaiming process
In rhodanate, rhodanate is regenerated as cyanide, acidization and each mating absorption system of oxidizing process, to recycle its production
Raw cyanide.Neutralizer is added into the Tailings Slurry after oxidation regeneration, adjusting Tailings Slurry pH value is 7.0-8.0, by Tailings Slurry
In arsenic and most of heavy metals removal, deep treatment medicament is finally passed through into the Tailings Slurry after neutralization, by remaining dirt
It contaminates object and carries out deep treatment.CN 101070566A discloses a kind of cyaniding tailing containing original sulfides package gold and mentions gold
Process, this method is first with the original sulfides containing package gold in method for floating separation and concentration cyaniding tailing, then
By containing golden sulfide concentrate Ultrafine Grinding in tower grinding-leaching mill is wrapped up, enters intensified alkaline leaching stirred tank after Ultrafine Grinding and carry out alkalinity
Normal temperature and pressure strengthens pre-oxidation, and CaO cream is added after the completion of pre-oxidation into ore pulp and sizes mixing, Cyanide Leaching operation is entered after sizing mixing,
Efficiently mention gold.The only limit of the disclosure of the invention is to tailing gold extracting method, and a large amount of tailings still need to storage Tailings Dam after mentioning gold, without being subject to
Development and utilization, the wasting of resources are still huge.
Although a certain amount of cyanide can be recycled using acidification absorption method, since recovery of cyanide is not thorough, ore pulp
The middle remaining a certain amount of cyanide of meeting, and some heavy metal ion are not all removed effectively.Meeting after Pomolio-Celdecor process processing
Remaining a large amount of chlorine residue, generates ClCN product, causes secondary pollution problem, the heavy metal ion such as copper, zinc, lead in ore pulp fail
It is effectively administered, and liquid chlorine etc. has very big environmental risk.And these methods for gold smelting without looking forward to
Industry can generate a large amount of SO2The characteristics of flue gas, cannot effectively reduce the processing cost of cyaniding tailing slurry.
Therefore, also still lack more satisfactory method in terms of to smelting enterprise's cyaniding tailing slurry processing, as can resolving
This problem will have important meaning to China's production and environmental protection development is developed.In addition, how to start to process from raw ore up to knot
Shu Quancheng realizes that without tailings discharging be also a completely new at present research direction.
Summary of the invention
For this purpose, one of the objects of the present invention is to provide a kind of cyaniding tailing environmental protection to extract gold from and other metals and brickmaking
Method.Method of the invention may make that the cyaniding tailing containing hypertoxic cyanide obtains sufficiently effective utilization, is made great
The finished bricks and metal of use value.
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of cyaniding tailing environmental protection extracts gold from the method with other metals and brickmaking, includes the following steps:
(1) by cyaniding tailing decyanation；
(2) step (1) resulting material carries out selecting sulphur, and the sulphur selected can be supplied to sulfuric acid plant and be directly used in production sulfuric acid；
(3) tailings after selecting sulphur stirs evenly brickmaking after catalyst and bentonite is added；
(4) dedusting generated when brickmaking recycles metal, then discharges after desulphurization denitration.
In the present invention cyaniding tailing can for containing combined cyaniding tailing one kind or two or more in gold, silver, copper, lead, zinc etc.,
The tailing Solid state fermentation effect containing cyanogen that the present invention generates after being leached to gold during using gold raw ore extracts gold is outstanding
Its is good, and cyanogen content is generally at 0.01-0.04 g tons, and such as 0.02 g ton or so.1 ton of gold of every production will discharge 2.5~30,000
Ton cyaniding waste residue, 750~9,000,000 tons of China's cyanidation tailings year total release, until at present accumulation volume of cargo in storage be more than 70,000,000 tons, be
Large Industrial Solid Waste of China's gold industry.Cyaniding tailing contains extremely toxic substance, has significant damage to human body, has seriously to environment
Pollution.Therefore, it is highly desirable to carry out environmental protection treatment to it.
Currently, the treatment process of cyaniding tailing, which is generally directly entered without decyanation, selects sulphur program, such processing work
Skill makes sulphur abjection effect very bad, makes subsequent brickmaking be difficult to meet requirement, is also unfavorable for remaining in tailing
Metal is recycled.And the application by a large amount of the study found that first decyanation selects sulphur that sulphur could be made to select more thoroughly again,
Removal of sulphur effect is very good, which selects the sequence of sulphur to be very beneficial for subsequent processing and guarantee properties of product again, both may be used
With by a small amount of metal such as gold, silver, copper, lead, zinc remaining in tailing etc. recycle, and can be made can satisfy practical application at
Product brick.Above-mentioned first decyanation step of the invention can not be omitted, and can not carry out with the reverse sequence of desulfurized step, the two cooperates
Just there is extraordinary effect to the cyaniding tailing processing of sulfur-bearing.
Decyanation can be carried out by the prior art, the decyanating method as disclosed in CN 103553468A, CN104475269A
It carries out.Preferably, decyanation is carried out by the way that the decyanation agent containing ammonium halide is added in step (1).Decyanation agent can be and preferably
It can also be to contain mass percentage 5-20%, preferably 10% ammonium halide and other remaining existing decyanations for ammonium halide
Agent component.Existing decyanation technology is usually that sodium salt, sylvite etc. are added into tailing, these salt are added and go out to the brick of post-production
Existing scum phenomenon.The present invention as numerous studies find to be added ammonium chloride then to later period brickmaking technology and obtained by the performance of brick do not have
It influences, and can preferably remove cyanogen.Ammonium halide used in the present invention can be one or more in ammonium chloride, ammonium bromide etc..
Preferably, the amount of ammonium halide in decyanation agent is added when decyanation as the 0.5-2% of the quality of cyaniding tailing to be processed, example
For example 0.7%, 0.9%, 1.1%, 1.3%, 1.5%, 1.7%, 1.9% etc., preferably 0.8-1.2%.
Preferably, after decyanation agent being added, tailing and the mixture of decyanation agent are heated into 10min or more at 50-80 DEG C, i.e.,
Removing cyanogen, preferably 20-50min, more preferable 30min can preferably be neutralized.
In one embodiment, step (1) is by the process of cyaniding tailing decyanation are as follows: by quality is cyaniding tailing to be processed
The ammonium halide of 0.5-2% mixed with cyaniding tailing after after mixing evenly, be heated to 50-80 DEG C, keep 10min or more, preferably
Decyanation can be neutralized for 20-50min, more preferable 30min.
Preferably, sulphur is selected to carry out in step (2) by flotation.The 5- of step (1) resulting material quality is added when flotation
15%, preferably 10% xanthate, 1-5%, preferably 2% pine tar, 5-15%, preferably 10% copper sulphate can be compared with
Fully to floatingly select sulphur.
Preferably, it carries out selecting sulphur when sulfur content is higher than 1%, sulfur content can be directly entered when being lower than 1% without selecting sulphur
Step (3) plus catalyst brickmaking technology.
It carries out selecting sulphur when further preferably sulfur content is higher than 1%, sulfur content can be without selecting sulphur when being lower than 1%.
The environmental protection of cyaniding tailing of the invention extracts gold from selects sulphur to make again with the method elder generation decyanation of other metals and brickmaking
Sulphur select more thoroughly, removal of sulphur effect is very good, thus both can by a small amount of metal remaining in tailing for example gold, silver, copper, lead,
The recycling such as zinc, and the finished bricks that can satisfy practical application can be made, all tailings are utilized effectively, without any useless
Gurry generates.
The second object of the present invention be to provide a kind of sulfur-bearing raw ore without tailings environmental-friendly extract gold from other metals and
The method of brickmaking, includes the following steps:
(1) sulfur-bearing raw ore is crushed into ball milling；
(2) step (1) resulting material carries out selecting sulphur；
(3) tailings after selecting sulphur stirs evenly brickmaking after catalyst and bentonite is added；
(4) dedusting generated when brickmaking recycles metal, then discharges after desulphurization denitration.
The program is effectively returned metal such as gold, silver, copper, lead, zinc etc. by the way that catalyst appropriate since raw ore, is added
Receive, and the finished bricks that can satisfy practical application can be made, do not generate any tailing, waste residue in the process, solve always with
The problem of carrying out insoluble tailing waste material, has fundamentally prevented tailing and has led to the problem of, the great value of environmental protection.
In the present invention sulfur-bearing raw ore can for containing sulfur gold ore, containing acanthite, sulfur-bearing copper mine, sulfur-bearing lead ore, containing a kind in aphalerite
Or combination of more than two kinds, sulfur content therein is usually 1% or more.
100 mesh or more are milled to preferably, crushing in step (2), can to select sulphur effect more preferable, preferably 150
It is more than mesh.
Preferably, selecting sulphur in step (2) is that sulphur is selected in flotation.The 5- of step (1) resulting material quality is added when flotation
15%, preferably 10% xanthate, 1-5%, preferably 2% pine tar, 5-15%, preferably 10% copper sulphate can be compared with
Fully to floatingly select sulphur.
Preferably, selected sulfide containing material carries out selecting metal again, and the sulfide containing material after selecting metal can directly carry out again sharp
With such as supply sulfuric acid plant is directly used in production sulfuric acid.Select metal can be used electrolytic method isolate gold, silver therein, copper, lead,
Zinc.
The third object of the present invention is to provide a kind of extracting gold from and other metals without tailings environmental-friendly for oxidation green ore
And the method for brickmaking, include the following steps:
(1) by oxide ore crushing raw ore；
(2) brickmaking after catalyst and bentonite is added in the broken material of step (1)；
(3) dedusting generated when brickmaking recycles metal, then discharges after desulphurization denitration.
Oxidized ore is metalliferous deposit after by oxidation, the ore in the oxidized zone of formation, sulfur content general 1% with
Under.After ore is by oxidation, its mineral constituent and structure, construction produce apparent variation, thus in processing benefit
Used time also must be using the method and process flow different from primary ore.
Preferably, being crushed in step (1) includes that level-one is broken and two-stage is broken, partial size is crushed within 1mm.
Preferably, the catalyst in the present invention is combination one kind or two or more in halide salt, preferably 1 in chlorate
Kind or combination of more than two kinds, further preferably combination one kind or two or more in the chlorate of alkali or alkaline earth metal, example
It such as can be sodium chloride, potassium chloride.
Inventor is surprised to find by numerous studies uses chlorate that can while efficiently recycle wherein as catalyst
The various metals contained.Such as cyaniding tailing, cooperates with the decyanation agent used when decyanation, be very beneficial for subsequent metal
The performance of recycling and brickmaking.Use decyanation agent decyanation that desulfurization more smoothly, is thoroughly carried out, it just will not be to subsequent after sulphur abjection
Chlorate removing metal is added and generates interference, preferably removes the metals such as gold, silver, copper, lead, zinc to reach, metal removal effect
Fruit further ensures well the quality of brick.Therefore, chlorate cooperates as catalyst with the decyanation agent used when decyanation, reaches
Good technical effect is arrived.
For sulfur-bearing raw ore or oxidation green ore, by the way that catalyst halide salt provided by the invention, preferably chlorination is added
Salt efficiently can fully extract various metals in raw ore simultaneously, to guarantee the quality that brick is made.
The amount of the catalyst of addition can generally be known according to the number of the metal contained in tailing or in raw ore by this field
Knowledge is determined.For common metal content between 5-10g/ tons, the amount that catalyst is added is generally the 2- of tailing or ore quality
10%, preferably 5%, increase catalyst with the increase of tenor.
In order to enable brick, which is made, has preferable performance, preferably, bentonitic additional amount is tailings or broken rear matter
The 1-5% of amount, preferably 2%.
It is separated preferably, recycling metal in the present invention using electrolysis.
Preferably, dedusting includes: that one cyclonic dedusting, second level cyclone dust removal, three-level cyclone dust removal and flue gas electricity remove
Dirt.There is no particular/special requirement to flue gas, temperature, humidity, as long as reaching purpose of gathering dust.
Brickmaking technology carries out brickmaking according to conventional methods in the art.Denitration sulfur removal technology is also the routine according to this field
Method carries out.
The method of cyaniding tailing or raw ore of the invention to extract gold from other metals and brickmaking, by the way that the present invention is added
The suitable catalyst chlorate of people's discovery, may make various metals that can substantially simultaneously separate from treating material,
The brick for meeting production requirement is made simultaneously, so that waste tailings are fully used, raw ore is then realized entirely without at tailing
Reason.Therefore, the method for the present invention has the important value of environmental protection, there is great contribution to social environment.
Detailed description of the invention
Fig. 1 is that cyaniding tailing environmental protection extracts gold from the stream of the method with other metals and brickmaking in one embodiment of the invention
Cheng Tu；
Fig. 2 be in one embodiment of the invention sulfur-bearing raw ore extract gold from without tailings environmental-friendly and other metals and brickmaking
The flow chart of method；
Fig. 3 is that extracting gold from and other metals and brickmaking without tailings environmental-friendly for green ore is aoxidized in one embodiment of the invention
Method flow chart.
Specific embodiment
Of the invention for ease of understanding, it is as follows that the present invention enumerates embodiment.Those skilled in the art are it will be clearly understood that the implementation
Example is used only for helping to understand the present invention, should not be regarded as a specific limitation of the invention.
Embodiment 1
Fig. 1 is that cyaniding tailing environmental protection extracts gold from a flow chart of the method with other metals and brickmaking, is specifically included
Following steps:
(1) ammonium chloride of tailing quality 0.5% is added into cyaniding tailing, stirs evenly decyanation；
(2) step (1) resulting material carries out selecting sulphur, and the sulphur selected can directly be sold to sulfuric acid plant for producing sulfuric acid；
(3) tailings after selecting sulphur stirs evenly after the catalyst sodium chloride of tailings quality 5% is added into brick machine compacting
Enter tunnel oven afterwards and is fired into brick；
(4) gas generated when brickmaking is by one cyclonic dedusting, second level cyclone dust removal, three-level cyclone dust removal and flue gas electricity
Dedusting recycling；
(5) pass through electrolytic recovery metal therein；
(6) desulphurization denitration discharges flue gas after reaching discharge standard.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Decyanation rate is 99%, desulfurization degree 99%, gold recovery 95%, silver raising recovery rate 95%, and copper recovery is
90%, lead recovery 90%, zinc recovery 90%；
The performance of brick: meet GB13545--2014.
Embodiment 2
The additional amount of ammonium chloride is the 2% of tailing quality in step (1), remaining step is same as Example 1.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Decyanation rate is 99%, desulfurization degree 99%, gold recovery 95%, silver raising recovery rate 95%, and copper recovery is
90%, lead recovery 90%, zinc recovery 90%；
The performance of brick: meet GB13545--2014.
Embodiment 3
The additional amount of ammonium chloride is the 0.8% of tailing quality in step (1), remaining step is same as Example 1.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Decyanation rate is 99%, desulfurization degree 99%, gold recovery 95%, silver raising recovery rate 95%, and copper recovery is
90%, lead recovery 90%, zinc recovery 90%；
The performance of brick: meet GB13545--2014.
Embodiment 4
The additional amount of ammonium chloride is the 1.2% of tailing quality in step (1), remaining step is same as Example 1.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Decyanation rate is 99%, desulfurization degree 99%, gold recovery 96%, silver raising recovery rate 95%, and copper recovery is
90%, lead recovery 90%, zinc recovery 90%；
The performance of brick: meet GB13545--2014.
Comparative example 1
It is identical as step in embodiment 4, in addition to the decyanation process without step (1), and directly carry out selecting sulphur.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Desulfurization degree is 82%, gold recovery 88%, silver raising recovery rate 85%, copper recovery 80%, and lead recovery is
80%, zinc recovery 80%；
The performance of brick: meet GB13545--2014.
Embodiment 5
Fig. 2 is a flow chart of the method for sulfur-bearing raw ore to be extracted gold from without tailings environmental-friendly with other metals and brickmaking,
Specifically includes the following steps:
(1) sulfur-bearing raw ore crushing ball milling is reached into 150 mesh or more；
(2) step (1) resulting material carries out drug and selects sulphur, and selected sulfide containing material carries out selecting metal, sulfur-bearing again with electrolysis
Material directly recycles；
(3) enter tunnel oven after stirring evenly after the tailings addition catalyst potassium chloride after selecting sulphur into brick machine compacting to burn
Brick is made；
(4) gas generated when brickmaking is by one cyclonic dedusting, second level cyclone dust removal, three-level cyclone dust removal and flue gas electricity
Dedusting recycling；
(5) pass through electrolytic recovery metal therein；
(6) desulphurization denitration discharges flue gas after reaching discharge standard.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Desulfurization degree is 99%, gold recovery 95%, silver raising recovery rate 94%, copper recovery 92%, and lead recovery is
90%, zinc recovery 91%；
The performance of brick: meet GB13545--2014.
Embodiment 6
Fig. 3 is a process for aoxidizing the method for green ore to be extracted gold from without tailings environmental-friendly with other metals and brickmaking
Figure, specifically includes the following steps:
(1) oxidation green ore be crushed to maximum gauge within 1 millimeter with two-stage crushing by level-one is broken；
(2) enter after stirring evenly after the broken material addition catalyst sodium chloride of step (1) into brick machine compacting
Tunnel oven is fired into brick；
(3) gas generated when brickmaking is by one cyclonic dedusting, second level cyclone dust removal, three-level cyclone dust removal and flue gas electricity
Dedusting recycling；
(4) pass through electrolytic separation adsorption recovery metal therein；
(5) desulphurization denitration discharges flue gas after reaching discharge standard.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Gold recovery is 96%, silver raising recovery rate 95%, copper recovery 90%, lead recovery 92%, zinc recovery
It is 90%；
The performance of brick: meet GB13545--2014.
Embodiment 7
Used catalyst is sodium bromide in step (2), remaining step is same as Example 6.
By above-mentioned processing, the rate of recovery and properties of product in relation to substance are detected, as a result as follows:
Gold recovery is 93%, silver raising recovery rate 94%, copper recovery 90%, lead recovery 88%, zinc recovery
It is 89%；
The performance of brick: meet GB13545--2014.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (4)
- A kind of method with other metals and brickmaking 1. cyaniding tailing environmental protection extracts gold from, includes the following steps:(1) by cyaniding tailing decyanation；(2) step (1) resulting material carries out selecting sulphur；(3) brickmaking after catalyst and bentonite is added in the tailings after selecting sulphur；(4) dedusting generated when brickmaking recycles metal, then discharges after desulphurization denitration；Decyanation is carried out by the way that the decyanation agent containing ammonium halide is added in step (1)；The amount of ammonium halide in decyanation agent is added when decyanation For the 0.5-2% of the quality of cyaniding tailing to be processed；After decyanation agent is added, by tailing and the mixture of decyanation agent at 50-80 DEG C Lower heating 10min or more.
- 2. the method according to claim 1, wherein the amount that ammonium halide in decyanation agent is added when decyanation is to be processed The 0.8-1.2% of the quality of cyaniding tailing.
- 3. method according to claim 1 or 2, which is characterized in that sulphur is selected to carry out in step (2) by flotation.
- 4. according to the method described in claim 3, it is characterized in that, sulfur content carries out selecting sulphur, sulphur when being higher than 1% in step (2) Without selecting sulphur when content is lower than 1%, it is directly entered step (3) plus catalyst brickmaking technology.
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| CN1880283A (en) * | 2005-06-17 | 2006-12-20 | 张锋敏 | Steamed stone powder porous brick and its preparing process |
| CN101412597A (en) * | 2008-11-12 | 2009-04-22 | 大连理工大学 | Method for preparing sintered foamed brick from iron tailings by normal temperature foaming |
| CN103981370A (en) * | 2014-05-27 | 2014-08-13 | 招远市招金金合科技有限公司 | Comprehensive recycling method of cyanide tailing slag |
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