CN114737047B - Method for processing ore and material for refining metal - Google Patents
Method for processing ore and material for refining metal Download PDFInfo
- Publication number
- CN114737047B CN114737047B CN202210320838.3A CN202210320838A CN114737047B CN 114737047 B CN114737047 B CN 114737047B CN 202210320838 A CN202210320838 A CN 202210320838A CN 114737047 B CN114737047 B CN 114737047B
- Authority
- CN
- China
- Prior art keywords
- ore
- roasting
- flotation
- temperature
- copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 61
- 229910052751 metal Inorganic materials 0.000 title claims description 12
- 239000002184 metal Substances 0.000 title claims description 12
- 239000000463 material Substances 0.000 title description 26
- 238000007670 refining Methods 0.000 title description 7
- 230000008569 process Effects 0.000 claims abstract description 24
- 238000005188 flotation Methods 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 239000012141 concentrate Substances 0.000 claims description 22
- 239000000654 additive Substances 0.000 claims description 17
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 14
- 239000001110 calcium chloride Substances 0.000 claims description 14
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 14
- 229910052802 copper Inorganic materials 0.000 claims description 14
- 239000010949 copper Substances 0.000 claims description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 13
- 229910052785 arsenic Inorganic materials 0.000 claims description 13
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 13
- 230000002000 scavenging effect Effects 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 238000007885 magnetic separation Methods 0.000 claims description 12
- 238000000227 grinding Methods 0.000 claims description 11
- 230000000996 additive effect Effects 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 239000011593 sulfur Substances 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 9
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 8
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000002734 clay mineral Substances 0.000 claims description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 6
- 229910052737 gold Inorganic materials 0.000 claims description 6
- 239000010931 gold Substances 0.000 claims description 6
- 239000008188 pellet Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 4
- OMZSGWSJDCOLKM-UHFFFAOYSA-N copper(II) sulfide Chemical compound [S-2].[Cu+2] OMZSGWSJDCOLKM-UHFFFAOYSA-N 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 229910052569 sulfide mineral Inorganic materials 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- IHXWECHPYNPJRR-UHFFFAOYSA-N 3-hydroxycyclobut-2-en-1-one Chemical compound OC1=CC(=O)C1 IHXWECHPYNPJRR-UHFFFAOYSA-N 0.000 claims description 2
- 239000005909 Kieselgur Substances 0.000 claims description 2
- 239000004113 Sepiolite Substances 0.000 claims description 2
- 229960000892 attapulgite Drugs 0.000 claims description 2
- 229910052948 bornite Inorganic materials 0.000 claims description 2
- 229910052947 chalcocite Inorganic materials 0.000 claims description 2
- 229910052951 chalcopyrite Inorganic materials 0.000 claims description 2
- DVRDHUBQLOKMHZ-UHFFFAOYSA-N chalcopyrite Chemical compound [S-2].[S-2].[Fe+2].[Cu+2] DVRDHUBQLOKMHZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000003610 charcoal Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 239000000571 coke Substances 0.000 claims description 2
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 2
- 229910052971 enargite Inorganic materials 0.000 claims description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052622 kaolinite Inorganic materials 0.000 claims description 2
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 2
- 229910052625 palygorskite Inorganic materials 0.000 claims description 2
- -1 rectorite Substances 0.000 claims description 2
- 229910052624 sepiolite Inorganic materials 0.000 claims description 2
- 235000019355 sepiolite Nutrition 0.000 claims description 2
- 229910052970 tennantite Inorganic materials 0.000 claims description 2
- 229910052969 tetrahedrite Inorganic materials 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 238000009776 industrial production Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000005245 sintering Methods 0.000 abstract description 3
- 238000000926 separation method Methods 0.000 description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 description 12
- 239000011707 mineral Substances 0.000 description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 239000002994 raw material Substances 0.000 description 8
- 150000002739 metals Chemical class 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- HJTAZXHBEBIQQX-UHFFFAOYSA-N 1,5-bis(chloromethyl)naphthalene Chemical compound C1=CC=C2C(CCl)=CC=CC2=C1CCl HJTAZXHBEBIQQX-UHFFFAOYSA-N 0.000 description 4
- GOLCXWYRSKYTSP-UHFFFAOYSA-N arsenic trioxide Inorganic materials O1[As]2O[As]1O2 GOLCXWYRSKYTSP-UHFFFAOYSA-N 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 4
- ZOOODBUHSVUZEM-UHFFFAOYSA-N ethoxymethanedithioic acid Chemical compound CCOC(S)=S ZOOODBUHSVUZEM-UHFFFAOYSA-N 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 238000005453 pelletization Methods 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- 239000012991 xanthate Substances 0.000 description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 3
- 238000001354 calcination Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 239000004332 silver Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 239000005749 Copper compound Substances 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 150000001880 copper compounds Chemical class 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000006148 magnetic separator Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 150000003464 sulfur compounds Chemical class 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052964 arsenopyrite Inorganic materials 0.000 description 1
- MJLGNAGLHAQFHV-UHFFFAOYSA-N arsenopyrite Chemical compound [S-2].[Fe+3].[As-] MJLGNAGLHAQFHV-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/02—Roasting processes
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a method for treating ores, which is characterized in that the ores are roasted in a reducing atmosphere at a roasting temperature of 600-850 ℃. The ore treatment method has the advantages that: 1) Reducing and roasting at the middle and low temperature of 600-850 ℃, so that kiln forming phenomenon caused by sintering is avoided, and the production process is easy to control; the roasting temperature is low, the manufacturing cost of process equipment is low, the manufacture is easy, the maintenance is easy, and the energy consumption is low; 2) The method is selective reduction roasting, and can process various ores; 3) The method can be roasting by adopting a rotary kiln, and is suitable for large-scale industrial production.
Description
Technical Field
The invention relates to a method for processing ores and materials for refining metals.
Background
Arsenic-containing ores as a raw material for refining metals present process difficulties in metal smelting. Because the existing ore roasting method is oxidation roasting, arsenic in the ore is oxidized to generate arsenic trioxide after the oxidation roasting, and the arsenic trioxide has toxicity and is difficult to process. Therefore, how to avoid the generation of toxic products for arsenic-containing ores is one of the technical problems that are urgently needed to be solved in the art.
Disclosure of Invention
One of the purposes of the present invention is to overcome the shortcomings of the prior art and provide an ore processing method for reducing the generation of harmful substances and a material for refining metals.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
a method for treating an ore, characterized in that the ore contains arsenic or contains sulfur and arsenic, and the ore is roasted in a reducing atmosphere at a roasting temperature of 600-850 ℃.
According to one embodiment of the invention, the ore is roasted in the roasting zone, the temperatures being different from each other in the roasting zone by a maximum of 50-250 ℃.
According to one embodiment of the invention, the temperature of the roasting zone is 50-250 ℃ higher at the highest temperature than at the lowest temperature.
According to one embodiment of the invention, the temperature at the highest temperature in the calcination zone is 650-850 ℃.
According to one embodiment of the invention, the ore is preheated to 300-580 ℃ and then calcined.
According to one embodiment of the invention, the ore is pre-heated at 300-580 ℃ for 20-300 minutes before roasting.
According to one embodiment of the invention, the ore is roasted in a roasting device, after being preheated in the roasting device at 300-580 ℃ for 20-300 minutes, and then roasted at 600-850 ℃ for 20-200 minutes.
According to one embodiment of the invention, firing is performed in a firing device having an inlet and an outlet; the temperature at the inlet of the roasting device is 300-580 ℃, and the temperature at the outlet of the roasting device is 650-850 ℃.
According to one embodiment of the invention, the reducing atmosphere is realized for a roasting reducing agent.
According to one embodiment of the invention, the reducing agent comprises char and/or coal.
According to one embodiment of the invention, the char comprises charcoal, coke and/or activated carbon.
According to one embodiment of the invention, the reducing agent is added in an amount of 1% to 20% by weight of the ore.
According to one embodiment of the invention, the ore is post-roasted with additives including calcium chloride, copper chloride, sodium chloride and/or magnesium chloride.
According to one embodiment of the invention, the calcium chloride, copper chloride, sodium chloride and/or magnesium chloride are used in an amount of 5 to 25% by weight of the ore.
According to one embodiment of the invention, the ore is post-roasted with additives comprising one, two or three of a sulphur-containing material, a copper-containing material and an iron-containing material, respectively, or one, two or three of a sulphur-containing material, a copper-containing material and an iron-containing material, respectively.
According to one embodiment of the invention, the sulfur-containing material has a sulfur content of 0.5% to 20% by weight of the ore; the copper content in the copper-containing material is 0.5-20% of the weight of the ore.
According to one embodiment of the invention, the sulfur-containing material is elemental sulfur, a sulfur compound, or a sulfur compound-containing material; the copper-containing material is a copper simple substance, a copper compound or a material containing the copper compound; in the material containing sulfur and copper, copper and sulfur exist in the form of simple substances and/or compounds.
According to one embodiment of the invention, the material containing both sulfur and copper is a copper sulfide mineral; the copper sulfide mineral is chalcopyrite, chalcocite, cerulous copper, bornite, squaraine, tetrahedrite, tennantite and/or enargite.
According to one embodiment of the invention, the additive is added to the ore and then calcined, the additive comprising clay minerals, the clay minerals being added in an amount of 0.5% -10% of the ore, the clay minerals being selected from kaolinite, montmorillonite, attapulgite, sepiolite, rectorite, and/or diatomaceous earth.
According to one embodiment of the invention, additives are added to the ore, and the raw materials and the additives are mixed and pelletized and then calcined; the reducing agent is completely pelletized with the raw material and then baked, or is partially pelletized with the raw material and is partially not pelletized with the raw material.
According to one embodiment of the invention, the calcined product is cooled in a liquid, in a reducing gas or under a solid landfill.
According to one embodiment of the invention, the calcined product is directly subjected to liquid cooling.
According to one embodiment of the invention, the product after the cooling treatment is ground.
According to one embodiment of the invention, after grinding, a flotation step is also included, said flotation comprising roughing, scavenging and refining, resulting in a product enriched in the target metal.
According to one embodiment of the invention, tailings obtained by flotation are subjected to magnetic separation to obtain iron concentrate.
According to one embodiment of the invention, it comprises the steps of:
1) Providing an additive, mixing ore and the additive, and pelletizing;
2) Preheating the pellets for 20-300 minutes at 300-580 ℃; then roasting for 20-200min at 600-850 ℃;
3) Cooling the roasted product in liquid, cooling in reducing gas or cooling under the burying of solid, and grinding the cooled roasting balls;
4) And (3) grinding, and then, entering a flotation process, and carrying out flotation to obtain gold concentrate.
According to one embodiment of the invention, step 5) is further comprised: and the flotation tailings enter a magnetic separation process to produce iron ore concentrate.
According to one embodiment of the invention, the ore is a roasted ore and/or a non-roasted ore.
The material for refining metal is characterized in that the material is obtained by adopting the method, and the granularity is 0.03-10 mm after grinding.
The ore treatment method has the advantages that:
1) Reducing and roasting at the middle and low temperature of 600-850 ℃, so that kiln forming phenomenon caused by sintering is avoided, and the production process is easy to control; the roasting temperature is low, the manufacturing cost of process equipment is low, the manufacture is easy, the maintenance is easy, and the energy consumption is low;
2) The method is selective reduction roasting, and can process various ores containing arsenic;
3) The method can adopt rotary kiln roasting, and is suitable for large-scale industrial production;
4) The invention can enrich various valuable elements contained in the ore, such as gold, silver, copper and the like, and can avoid generating harmful arsenic trioxide;
5) The flotation and magnetic separation have higher separation and enrichment efficiency, and are suitable for large-scale industrial production;
6) The clean production technology is adopted, so that the harm of ores can be eliminated, and secondary environmental pollution can not be caused;
7) Ore can be utilized to the maximum extent, and zero emission of tailings is basically realized;
8) The scavenging tailings enter a magnetic separation process, and iron concentrate is produced through rough concentration, concentration and scavenging;
9) The magnetic separation tailings are high-silicon slag and can be utilized by building material industry and cement factories.
The method can be used for large-scale industrial production by using a rotary kiln, a flotation machine and a magnetic separator, and ore can be used for producing concentrate and iron concentrate enriched with target metals.
In conclusion, the invention is easy to realize by adopting the technical process; the conventional common equipment is adopted, so that the construction investment is greatly reduced and the production cost is reduced under the same construction scale; there is basically no requirement on raw materials, and various ores containing arsenic can be treated. The invention can produce high-grade bulk concentrate and iron concentrate. The method of the invention is a production technology which has low investment, low cost, simple process, no environmental pollution and suitability for various roasted ores or non-roasted ores.
In the method, calcium chloride is dissolved in water when cooled after roasting, and the rest materials are ground; the rest of calcium chloride is dissolved in water in the grinding process, the calcium chloride can be recovered by using a filter pressing method, and the recovered calcium chloride can be used for pelletizing, so that the calcium chloride can be recovered for recycling, and the cost is saved.
Detailed Description
The present invention will be further specifically described with reference to the following examples.
The method of treating ores of the present invention may be used to treat ores containing arsenic, or ores containing sulfur and arsenic, for the enrichment of metals of the gold, silver, nickel, cobalt, platinum group, copper, lead, zinc, tin, antimony, cadmium and/or bismuth.
The ore suitable for the method comprises raw ore and also comprises concentrate or tailings after the raw ore is treated.
The method comprises the steps of flotation and magnetic separation: feeding the ground materials into a flotation system for roughing, scavenging and selecting, wherein each flotation operation is separated into two products, namely foam and underflow; wherein, the mineral separation agent is added into the material firstly, and the rough separation operation is carried out after stirring; the roughing foam-rough concentrate enters the concentration operation without adding any medicament, the concentration foam after two to three times of concentration is the mineral separation product-mixed alloy concentrate, the concentration underflow-middling 1 sequentially returns to the former operation to form closed-circuit mineral separation, and does not return to the former operation to form open-circuit mineral separation; the roughing underflow is added with beneficiation reagent and then enters scavenging operation, scavenging foam-middling 2 sequentially returns to the former operation to form closed-circuit beneficiation, and does not return to the former operation to form open-circuit beneficiation. The underflow after the second to third scavenging is the flotation tailings and enters a magnetic separation system.
In the flotation process, the roughing-added mineral separation agent comprises sodium carbonate or lime, copper sulfate, xanthate, black powder and foaming agent, the scavenging-added mineral separation agent comprises sodium carbonate or lime, xanthate, black powder and foaming agent, and the scavenging-added mineral separation agent is not added.
Examples
A method of processing ore comprising the steps of:
1) Taking ore toxic sand and additives; sulfur and arsenic are contained in the arsenopyrite;
the additives are shown in the table, calculated on the weight of the ore.
Fully mixing the ore raw materials and the additives, pelletizing, wherein the grain diameter is 5-10mm and the proportion is more than 90%.
2) Pellet preheating, preheating temperature and time are shown in the table below. The preheated pellet is roasted, the roasting device is provided with a roasting area, the pellet enters the roasting area from an inlet of the roasting area, moves to an outlet of the roasting area at a constant speed, and is output from the outlet to the outside of the roasting area. The highest and lowest temperatures of the firing zone and the firing time are shown in the table below. The calcination is carried out in a reducing atmosphere, and the oxygen content in the calcination tail gas is monitored to be 1.0% or less.
3) The calcine balls output from the outlet of the roasting area directly enter water for cooling so as to prevent the calcine from being oxidized. Grinding after cooling, wherein the grinding fineness is 0.03-0.05mm and accounts for more than 80%.
4) And (3) feeding the ground material into a flotation system, and performing flotation to obtain gold concentrate.
Flotation may be carried out using existing flotation processes, such as roughing, scavenging and beneficiation operations in a flotation system, each flotation operation separated into two products, froth and underflow. Wherein, mineral processing reagent is added first to the material and carries out rough concentration operation after stirring, and the mineral processing reagent added by rough concentration is: 4000g/t of sodium carbonate, 350g/t of copper sulfate, 200g/t of xanthate, 100g/t of black drug and 50g/t of No. 2 oil. The roughing foam-rough concentrate is not added with any medicament and enters the concentration operation, the concentration foam is the mineral separation product-mixed alloy concentrate, the concentration underflow-middling 1 sequentially returns to the former operation to form closed-circuit mineral separation, and the open-circuit mineral separation is formed when the concentration underflow-middling 1 does not return. The roughing underflow enters scavenging operation after adding beneficiation reagent, and the scavenged beneficiation reagent is as follows: 2000g/t of sodium carbonate, 120g/t of xanthate, 80g/t of black drug and 30g/t of No. 2 oil. The scavenging foam-middling 2 sequentially returns to the former operation to form closed-circuit ore dressing, and does not return to the former operation to form open-circuit ore dressing.
The flotation process in the following examples uses a secondary sweep and secondary beneficiation process, and uses an open circuit beneficiation.
The ore treatment method has the advantages that:
1) Reducing and roasting at the middle and low temperature of 600-850 ℃, so that kiln forming phenomenon caused by sintering is avoided, and the production process is easy to control; the roasting temperature is low, the manufacturing cost of process equipment is low, the manufacture is easy, the maintenance is easy, and the energy consumption is low;
2) The method is selective reduction roasting, and can process various ores containing arsenic;
3) The method can adopt rotary kiln roasting, and is suitable for large-scale industrial production;
4) The invention can enrich various valuable elements contained in the ore, such as gold, silver, copper and the like, and can avoid generating harmful arsenic trioxide;
5) The flotation and magnetic separation have higher separation and enrichment efficiency, and are suitable for large-scale industrial production;
6) The clean production technology is adopted, so that the harm of ores can be eliminated, and secondary environmental pollution can not be caused;
7) Ore can be utilized to the maximum extent, and zero emission of tailings is basically realized;
8) The scavenging tailings enter a magnetic separation process, and iron concentrate is produced through rough concentration, concentration and scavenging;
9) The magnetic separation tailings are high-silicon slag and can be utilized by building material industry and cement factories.
The method can be used for large-scale industrial production by using a rotary kiln, a flotation machine and a magnetic separator, and ore can be used for producing concentrate and iron concentrate enriched with target metals.
In conclusion, the invention is easy to realize by adopting the technical process; the conventional common equipment is adopted, so that the construction investment is greatly reduced and the production cost is reduced under the same construction scale; there is basically no requirement on raw materials, and various ores containing arsenic can be treated. The invention can produce high-grade bulk concentrate and iron concentrate. The method of the invention is a production technology which has low investment, low cost, simple process, no environmental pollution and suitability for various roasted ores or non-roasted ores.
In the method, calcium chloride is dissolved in water when cooled after roasting, and the rest materials are ground; the rest of calcium chloride is dissolved in water in the grinding process, the calcium chloride can be recovered by using a filter pressing method, and the recovered calcium chloride can be used for pelletizing, so that the calcium chloride can be recovered for recycling, and the cost is saved.
The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions or improvements within the spirit of the present invention are intended to be covered by the claims of the present invention.
Claims (11)
1. A method of processing ore, comprising the steps of:
1) The ore contains sulfur and arsenic, an additive and a reducing agent are provided, and the ore and the additive are mixed and pelletized; the additive comprises calcium chloride, copper chloride, sodium chloride and/or magnesium chloride; the dosage of the calcium chloride, the copper chloride, the sodium chloride and/or the magnesium chloride is 5-25% of the weight of the ore; the additive comprises copper sulfide minerals; the copper sulfide mineral is chalcopyrite, chalcocite, cerulous copper, bornite, squaraine, tetrahedrite, tennantite and/or enargite; the reducing agent is roasted after being pelletized with the ore in whole, or is partially pelletized with the ore and is partially not pelletized with the ore;
2) Roasting in a roasting device, the roasting device having an inlet and an outlet; the temperature at the inlet of the roasting device is 300-580 ℃, and the temperature at the outlet of the roasting device is 650-850 ℃; preheating the pellets for 20-300 minutes at 300-580 ℃; roasting at 600-850 ℃ for 20-200min; roasting the pellets in a reducing atmosphere;
3) Cooling the roasted product in liquid, cooling in reducing gas or cooling under the burying of solid, and grinding the cooled roasting balls; the fineness of the ground ore is 0.03-0.05mm and accounts for more than 80 percent;
4) And (3) grinding, and then, entering a flotation process, and carrying out flotation to obtain gold concentrate.
2. A method of treating ore as claimed in claim 1 wherein the ore is roasted in a roasting zone where the temperature difference is up to 50 ℃ to 250 ℃ from place to place.
3. The method of claim 1, wherein the temperature at the highest temperature in the roasting zone is 650 ℃ to 850 ℃.
4. The method of claim 1, wherein the reducing atmosphere is a roasting reducing agent.
5. The method of claim 4, wherein the reducing agent comprises char and/or coal.
6. The method of claim 5, wherein the char comprises charcoal, coke and/or activated carbon.
7. The method for treating ore according to claim 5, wherein the addition amount of the reducing agent is 1% -20% by weight of the ore.
8. The method for processing ore according to claim 1, wherein the additive is added to the ore and then calcined, and the additive comprises clay minerals, wherein the clay minerals are added in an amount of 0.5% -10% of the ore, and the clay minerals are selected from kaolinite, montmorillonite, attapulgite, sepiolite, rectorite, and/or diatomaceous earth.
9. The method of claim 1, further comprising a flotation step after grinding, wherein the flotation comprises roughing, scavenging and beneficiating to produce a product enriched in the target metal.
10. The method for processing ores according to claim 9, wherein tailings obtained by flotation are subjected to magnetic separation to obtain iron concentrates.
11. The method of ore processing according to claim 10, further comprising step 5): and the flotation tailings enter a magnetic separation process to produce iron ore concentrate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110355738 | 2021-04-01 | ||
| CN202110355738X | 2021-04-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114737047A CN114737047A (en) | 2022-07-12 |
| CN114737047B true CN114737047B (en) | 2024-03-19 |
Family
ID=82276763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210320838.3A Active CN114737047B (en) | 2021-04-01 | 2022-03-29 | Method for processing ore and material for refining metal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114737047B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105982A (en) * | 1986-09-03 | 1988-04-20 | 昆明工学院 | Cryogenic vulcanization roasting-beneficiating method reclaims copper, gold and silver |
| CN104404261A (en) * | 2014-12-11 | 2015-03-11 | 江西一元再生资源有限公司 | Method of performing chloridizing roasting to synchronously reduce and recover gold and iron from gold concentrate cyanide tailings |
| CN106222398A (en) * | 2016-08-25 | 2016-12-14 | 北京矿冶研究总院 | Method for roasting arsenic-containing material to deeply remove arsenic |
| CN106498177A (en) * | 2016-09-23 | 2017-03-15 | 北京科技大学 | In a kind of baking cyaniding tailings, gold and silver iron is reclaimed and synchronous innoxious method |
| CN111363929A (en) * | 2020-04-15 | 2020-07-03 | 昆明理工大学 | Gold ore dressing and smelting combined recovery process |
-
2022
- 2022-03-29 CN CN202210320838.3A patent/CN114737047B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105982A (en) * | 1986-09-03 | 1988-04-20 | 昆明工学院 | Cryogenic vulcanization roasting-beneficiating method reclaims copper, gold and silver |
| CN104404261A (en) * | 2014-12-11 | 2015-03-11 | 江西一元再生资源有限公司 | Method of performing chloridizing roasting to synchronously reduce and recover gold and iron from gold concentrate cyanide tailings |
| CN106222398A (en) * | 2016-08-25 | 2016-12-14 | 北京矿冶研究总院 | Method for roasting arsenic-containing material to deeply remove arsenic |
| CN106498177A (en) * | 2016-09-23 | 2017-03-15 | 北京科技大学 | In a kind of baking cyaniding tailings, gold and silver iron is reclaimed and synchronous innoxious method |
| CN111363929A (en) * | 2020-04-15 | 2020-07-03 | 昆明理工大学 | Gold ore dressing and smelting combined recovery process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114737047A (en) | 2022-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103981370B (en) | A kind of comprehensive reutilization method of cyanidation tailings | |
| CA2470478C (en) | High temperature pressure oxidation of ores and ore concentrates containing silver using controlled precipitation of sulfate species | |
| CN103320617A (en) | Technology for cleanly and harmlessly processing high-calcium waste residue and high-iron waste residue | |
| CN110983061B (en) | Method for cooperative recycling of lead-zinc smelting slag and jarosite slag | |
| CN101817553A (en) | Method for treating arsenic-containing smoke dust | |
| CN101245407B (en) | Selecting-smelting method for processing complex hard-washing low ore grade pulmbous sulfide zincium mine | |
| CN110629028A (en) | Process for treating sludge containing copper and nickel by combination method | |
| CN102220479A (en) | Beneficiation method for comprehensive recovery of valuable metals from sulfuric acid residues through chlorination and segregation | |
| DE2918316C2 (en) | Process for roasting and chlorinating fine-grained iron ores and / or concentrates containing non-ferrous metals | |
| CN111996364B (en) | Method for recovering gold from cyanidation tailings and synchronously magnetizing iron | |
| CN108950200A (en) | A method of it carrying golden high arsenic-and copper-bearing concentrate dearsenification and recycles associated gold | |
| CN114737047B (en) | Method for processing ore and material for refining metal | |
| KR102113558B1 (en) | Manufacturing process of various metals and derivatives derived from copper and sulfur | |
| CN113278814A (en) | Environment-friendly low-toxicity gold extraction agent, preparation method thereof and gold leaching method | |
| CN108950195B (en) | Method for extracting valuable metals from zinc concentrate oxidizing slag by using chlorine-containing wastewater | |
| CN114686690B (en) | Treatment method of cyanide tailings and material for refining metal | |
| CN114164345B (en) | Method for cooperatively treating lead-zinc smelting slag and copper-containing material | |
| CN110373539B (en) | Method for strengthening gold enrichment of refractory gold ore by direct smelting | |
| CN111254287B (en) | Smelting recovery method of lead-zinc-containing enriched oxide | |
| CN114774676A (en) | Method for enriching metal and material for refining metal | |
| CN106756093A (en) | A kind of modified floatation and recovery of lead zinc method in difficult zinc oxide material heat chemistry surface | |
| CN102618730B (en) | Process for separating materials containing indium, lead, silver, copper and bismuth | |
| CN114672642A (en) | Method for enriching nickel and material for extracting nickel | |
| CN207567317U (en) | The system for handling flue dust | |
| CN86105982A (en) | Cryogenic vulcanization roasting-beneficiating method reclaims copper, gold and silver |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |