CN106222436A - A kind of microwave extract method of magnetic iron ore - Google Patents
A kind of microwave extract method of magnetic iron ore Download PDFInfo
- Publication number
- CN106222436A CN106222436A CN201610715820.8A CN201610715820A CN106222436A CN 106222436 A CN106222436 A CN 106222436A CN 201610715820 A CN201610715820 A CN 201610715820A CN 106222436 A CN106222436 A CN 106222436A
- Authority
- CN
- China
- Prior art keywords
- iron ore
- magnetic iron
- microwave
- solution
- extract method
- 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.)
- Pending
Links
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
- C22B11/00—Obtaining noble metals
- C22B11/04—Obtaining noble metals by wet 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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/045—Leaching using electrochemical processes
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to technical field of wet metallurgy, particularly relate to the microwave extract method of a kind of magnetic iron ore.By in magnetic iron ore pre-treatment step, in solution, redox potential current potential is controlled, the loss rate making gold is less than one thousandth, and further in leaching operation, utilizes the distinctive character of microwave, microwave action is on material molecule, make molecular motion accelerate and mutually friction occurs, producing amount of heat, thus accelerate reaction, substantially reduce the response time, improve production efficiency.And substantially increase the leaching rate of gold.
Description
Technical field
The present invention relates to technical field of wet metallurgy, it particularly relates to the microwave extract method of a kind of magnetic iron ore.
Background technology
Gold is accompanied by mineral and gives birth to, and such as sulfide gold mine, particularly may be divided into pyrite, magnetic iron ore, arsenical pyrite
Etc. ore resource.Further, gold existing forms predominantly submicron-sized particulate in Ore is combined closely with iron mine, and this ultra micro
Particulate is tiny to time micro-grade, and then most gold is embedded in the molecular grating of Ore, is formed with Ore and dissolves each other
Body；This feature makes Ore when by mechanical lapping or pulverizing, is crushed to maximum fineness in time and is also difficult to make gold from Ore
Coming out, the especially gold in magnetic iron ore is more difficult to come out in being attracted to crystal inside grid, and then is difficult to shape
Become the gold grain of Free Surface, when causing taking solution leach so that liquid medicine is difficult to contact with golden surface, be the most just difficult to and
The biochemical reaction of golden hair and dissolved.
To this end, there is researcher just by research, by exposed for the gold in sulfide ore outside, i.e. pass through pre-treatment step
By exposed for gold out, but when taking such measure, the technology often using redox reaction is carried out, at solution
In will form potential, and according to general knowledge, different potential will draw different reaction results, or draws
Product and consumption of raw materials thing are the most different, and how by Ore, especially magnetic iron ore Ore carries out pretreatment so that big
The gold of amount is extracted golden crucial problem by exposed out becoming from magnetic iron ore.It addition, prior art is extracted from solution
Au plasma rate is relatively low, is 80～90%, and substantial amounts of gold element is drained off with waste liquid, causes waste.
Based on above-mentioned technical problem, this researcher, in the research of early stage, enters for extracting the technique of gold from magnetic iron ore
Row new selection and exploratory development, for enable the gold in magnetic iron ore substantial amounts of by exposed out, and then be follow-up leaching,
Enrichment, separation offer basis, and then reduction are extracted the cost of gold from magnetic iron ore and are provided one preprocess method.The present invention
Purpose be to study further on the basis of early-stage Study, improve Au plasma rate.
Summary of the invention
In view of this, the present invention, by being optimized technique above, to improve Au plasma rate, obtains bigger warp
Ji benefit.
The present invention solves above-mentioned technical problem by the following technical programs:
The microwave extract method of a kind of magnetic iron ore, comprises the following steps:
(1) pretreatment: it is 80～200 mesh that magnetic iron ore is crushed to fineness, it is thus achieved that magnetic iron ore powder is sent in reactive tank,
In reactive tank, add magnetic iron ore powder 1～the salpeter solution of 3 times of weight, and to use the mixing speed of agitator be 40～70r/
Min stir process 1～2h, then it is added thereto to salpeter solution 0.7～the sodium nitrite of 0.9 times of weight, and continue stir process
After 20～30min, being placed on temperature is that in 60～70 DEG C, standing processes 10～20min, then is added thereto to hydrogen peroxide, its
The consumption of middle hydrogen peroxide is 1～1.3 times of sodium nitrite weight, and controls after solution temperature is 50～60 DEG C, then with calomel
Electrode as reference electrode, the potential in measuring point solution, and the potential in solution is adjusted and control≤
450mV so that it is after sustained response 3～4h, it is thus achieved that pretreatment slip, stand-by；
(2) leach: the hydrochloric acid of 1～2 times of addition slip weight in the slip that pretreatment obtains, add again after stirring
Enter the 4 of slip weight～the calcium hypochlorite of 6%, then send in microwave reaction kettle and carry out microwave treatment 20～40min, the most quiet
Filter after putting process 20～40min, it is thus achieved that containing gold filtrate；
(3) enrichment: the filtrate containing gold obtained is sent in agitator tank, and in agitator tank, add hydrochloric acid consumption 1～2 times
Basic anionic resin solution, and to use mixing speed be to filter after 50～60r/min stir process 1～3h, it is thus achieved that containing gold filter
Slag；
(4) separate: gold filtering residue will be contained and send in parsing groove, and be added thereto to containing gold filtering residue weight 1～the thiourea of 3 times
Solution, and after using mixing speed to be 60～80r/min stir process 30～60min, then it is added thereto to reducing agent, adjust and solve
Temperature in analysis groove is 80～90 DEG C, after being 80～90r/min stir process 20～30min with mixing speed, filters, will
The filtering residue obtained is dried, and obtains bronze.
The concentration of described salpeter solution is 2～3mol/L.
Described sodium nitrite is the powder of 300～400 mesh.
Described calcium hypochlorite is the powder of 300～400 mesh.
The molar concentration of described hydrochloric acid is 1.5～2.5mol/L.
During described microwave treatment, the power of microwave is 2～8kw.
Described basic anionic resin solution is-N (CH3) 3OH.
The molar concentration of described-N (CH3) 3OH is 1～3mol/L.
The molar concentration of described thiourea solution is 1～2mol/L.
Described reducing agent is white phosphorus.
The consumption of described white phosphorus is 10～30% containing gold filtering residue weight.
The beneficial effects of the present invention is:
First, by magnetic iron ore pre-treatment step, in solution, redox potential current potential is controlled so that molten
Redox potential in liquid maintains below 450mv, and then Surface of Pyrrhotite material is reached by extrusion rate
More than 85%, also reduce the gold loss rate in pre-treatment step less than one thousandth simultaneously, and then ensure that from magnetic yellow
Iron mine extracts Au plasma rate.
Secondly, the present invention by, in leaching operation, utilizing the distinctive character of microwave, microwave action on material molecule,
Make molecular motion accelerate and mutually friction occurs, producing amount of heat, thus accelerate reaction, substantially reduce the response time, carry
High production efficiency.And substantially increase the leaching rate of gold, reach more than 97%.
Again, by the strict control of technological parameter in each step so that Au plasma rate reaches more than 96%.
Detailed description of the invention
Those skilled in the art understands for convenience, and below in conjunction with embodiment, the present invention will be further described.
Embodiment is only the illustration to this invention, is not limitation of the invention, does not makees the step illustrated in embodiment
It is all prior art, is not described in detail at this.
Embodiment one
The microwave extract method of a kind of magnetic iron ore, comprises the following steps:
(1) pretreatment: it is 80 mesh that magnetic iron ore is crushed to fineness, it is thus achieved that magnetic iron ore powder is sent in reactive tank, to instead
Answering the concentration adding 1 times of weight of magnetic iron ore powder in groove is 2mol/L salpeter solution, and uses the mixing speed of agitator to be
40r/min stir process 1h, then it is added thereto to the sodium nitrite that fineness is 300 mesh of 0.7 times of weight of salpeter solution, and continue
After stir process 20min, being placed on temperature is that in 60 DEG C, standing processes 10min, then is added thereto to hydrogen peroxide, wherein mistake
The consumption of hydrogen oxide is 1 times of sodium nitrite weight, and controls after solution temperature is 50 DEG C, then using calomel electrode as reference electricity
Pole, the potential in measuring point solution, and the potential in solution is adjusted and controls at≤450mV so that it is sustained response
After 3h, it is thus achieved that pretreatment slip, stand-by；
(2) leach: the salt that molar concentration is 1.5mol/L of 1 times of addition slip weight in the slip that pretreatment obtains
Acid, add after stirring slip weight 4% the calcium hypochlorite that fineness is 300 mesh, then send in microwave reaction kettle
Carrying out microwave treatment, the power of microwave is 2kw, and the process time is 20min, filters after then standing processes 20min, it is thus achieved that containing gold
Filtrate；
(3) enrichment: the filtrate containing gold obtained is sent in agitator tank, and adds rubbing of hydrochloric acid consumption 1 times in agitator tank
Your concentration is-N (CH3) the 3OH solution of 1mol/L, and to use mixing speed be to filter after 50r/min stir process 1h, it is thus achieved that contain
Gold filtering residue；
(4) separate: gold filtering residue will be contained and send in parsing groove, and be added thereto to the molar concentration containing gold filtering residue weight 1 times
For the thiourea solution of 1mol/L, and after using mixing speed to be 60r/min stir process 30min, then it is added thereto to white phosphorus, in vain
The consumption of phosphorus is 10% containing gold filtering residue weight, and adjusting the temperature resolved in groove is 80 DEG C, stirs with mixing speed for 80r/min
After processing 20min, filter, the filtering residue obtained is dried, obtains bronze.
Through test, using this programme Au plasma rate is 96.1%.
Embodiment two
The microwave extract method of a kind of magnetic iron ore, comprises the following steps:
(1) pretreatment: it is 200 mesh that magnetic iron ore is crushed to fineness, it is thus achieved that magnetic iron ore powder is sent in reactive tank, to instead
Answering the concentration adding 3 times of weight of magnetic iron ore powder in groove is 3mol/L salpeter solution, and uses the mixing speed of agitator to be
70r/min stir process 2h, then the fineness being added thereto to 0.9 times of weight of salpeter solution is 400 mesh sodium nitrite, and continue to stir
After mixing process 30min, being placed on temperature is that in 70 DEG C, standing processes 20min, then is added thereto to hydrogen peroxide, wherein peroxide
Change consumption is sodium nitrite weight 1.3 times of hydrogen, and control after solution temperature is 60 DEG C, then using calomel electrode as reference electricity
Pole, the potential in measuring point solution, and the potential in solution is adjusted and controls at≤450mV so that it is sustained response
After 4h, it is thus achieved that pretreatment slip, stand-by；
(2) leach: the salt that molar concentration is 2.5mol/L of 2 times of addition slip weight in the slip that pretreatment obtains
Acid, add after stirring slip weight 6% the calcium hypochlorite that fineness is 400 mesh, then send in microwave reaction kettle
Carrying out microwave treatment, the power of microwave is 8kw, and the process time is 40min, filters after then standing processes 40min, it is thus achieved that containing gold
Filtrate；
(3) enrichment: the filtrate containing gold obtained is sent in agitator tank, and adds rubbing of hydrochloric acid consumption 2 times in agitator tank
Your concentration is-N (CH3) the 3OH solution of 3mol/L, and to use mixing speed be to filter after 60r/min stir process 3h, it is thus achieved that contain
Gold filtering residue；
(4) separate: gold filtering residue will be contained and send in parsing groove, and be added thereto to the molar concentration containing gold filtering residue weight 3 times
For the thiourea solution of 2mol/L, and after using mixing speed to be 80r/min stir process 60min, then it is added thereto to white phosphorus, in vain
The consumption of phosphorus is 10～30% containing gold filtering residue weight, and adjusting the temperature resolved in groove is 90 DEG C, with mixing speed as 90r/min
After stir process 30min, filter, the filtering residue obtained is dried, obtains bronze.
Through test, using this programme Au plasma rate is 96.5%.
Embodiment three
The microwave extract method of a kind of magnetic iron ore, comprises the following steps:
(1) pretreatment: it is 120 mesh that magnetic iron ore is crushed to fineness, it is thus achieved that magnetic iron ore powder is sent in reactive tank, to instead
Answering the concentration adding 2 times of weight of magnetic iron ore powder in groove is 2.5mol/L salpeter solution, and uses the mixing speed of agitator to be
50r/min stir process 1.5h, then the fineness being added thereto to 0.8 times of weight of salpeter solution is 350 mesh sodium nitrite, and continue
After stir process 25min, being placed on temperature is that in 65 DEG C, standing processes 15min, then is added thereto to hydrogen peroxide, wherein mistake
The consumption of hydrogen oxide is 1.2 times of sodium nitrite weight, and controls after solution temperature is 55 DEG C, then using calomel electrode as reference
Electrode, the potential in measuring point solution, and the potential in solution is adjusted and controls at≤450mV so that it is continue anti-
After answering 3.5h, it is thus achieved that pretreatment slip, stand-by；
(2) leach: the salt that molar concentration is 2mol/L of 1.5 times of addition slip weight in the slip that pretreatment obtains
Acid, add after stirring slip weight 5% the calcium hypochlorite that fineness is 350 mesh, then send in microwave reaction kettle
Carrying out microwave treatment, the power of microwave is 5kw, and the process time is 30min, filters after then standing processes 30min, it is thus achieved that containing gold
Filtrate；
(3) enrichment: the filtrate containing gold obtained is sent in agitator tank, and adds hydrochloric acid consumption 1.5 times in agitator tank
Molar concentration is-N (CH3) the 3OH solution of 2mol/L, and to use mixing speed be to filter after 55r/min stir process 2h, it is thus achieved that
Containing gold filtering residue；
(4) separate: gold filtering residue will be contained and send in parsing groove, and be added thereto to the molar concentration containing gold filtering residue weight 2 times
For the thiourea solution of 1.5mol/L, and after using mixing speed to be 70r/min stir process 40min, then it is added thereto to white phosphorus,
The consumption of white phosphorus is 20% containing gold filtering residue weight, and adjusting the temperature resolved in groove is 85 DEG C, stirs with mixing speed for 85r/min
After mixing process 25min, filter, the filtering residue obtained is dried, obtains bronze.
Through test, using this programme Au plasma rate is 96.8%.
Claims (10)
1. the microwave extract method of a magnetic iron ore, it is characterised in that comprise the following steps:
(1) pretreatment: it is 80～200 mesh that magnetic iron ore is crushed to fineness, it is thus achieved that magnetic iron ore powder is sent in reactive tank, to instead
Answer and groove adds magnetic iron ore powder 1～the salpeter solution of 3 times of weight, and to use the mixing speed of agitator be 40～70r/min
Stir process 1～2h, then be added thereto to salpeter solution 0.7～the sodium nitrite of 0.9 times of weight, and continue stir process 20～
After 30min, being placed on temperature is that in 60～70 DEG C, standing processes 10～20min, then is added thereto to hydrogen peroxide, wherein mistake
The consumption of hydrogen oxide is 1～1.3 times of sodium nitrite weight, and controls after solution temperature is 50～60 DEG C, then with calomel electrode
As reference electrode, the potential in measuring point solution, and the potential in solution is adjusted and controls, at≤450mV, to make
After its sustained response 3～4h, it is thus achieved that pretreatment slip, stand-by；
(2) leach: the hydrochloric acid of 1～2 times of addition slip weight in the slip that pretreatment obtains, after stirring, add material
4～the calcium hypochlorite of 6% of slurry weight, then sends in microwave reaction kettle and carries out microwave treatment 20～40min, then at standing
Filter after reason 20～40min, it is thus achieved that containing gold filtrate；
(3) enrichment: the filtrate containing gold obtained is sent in agitator tank, and adds hydrochloric acid consumption 1～the alkalescence of 2 times in agitator tank
Resin anion (R.A.) solution, and to use mixing speed be to filter after 50～60r/min stir process 1～3h, it is thus achieved that containing gold filtering residue；
(4) separate: gold filtering residue will be contained and send in parsing groove, and be added thereto to containing gold filtering residue weight 1～the thiourea solution of 3 times,
And after using mixing speed to be 60～80r/min stir process 30～60min, then it is added thereto to reducing agent, adjust and resolve groove
In temperature be 80～90 DEG C, after being 80～90r/min stir process 20～30min with mixing speed, filter, will obtain
Filtering residue dry, obtain bronze.
2. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: the concentration of described salpeter solution
It is 2～3mol/L.
3. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: described sodium nitrite is 300
～400 powder of mesh.
4. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: described calcium hypochlorite is 300
～400 powder of mesh.
5. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: the molar concentration of described hydrochloric acid is
1.5～2.5mol/L.
6. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: during described microwave treatment, microwave
Power be 2～8kw.
7. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: described basic anionic resin
Solution is-N (CH3) 3OH, and its molar concentration is 1～3mol/L.
8. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: described thiourea solution mole
Concentration is 1～2mol/L.
9. the microwave extract method of magnetic iron ore as claimed in claim 1, it is characterised in that: described reducing agent is white phosphorus.
10. the microwave extract method of magnetic iron ore as claimed in claim 9, it is characterised in that: the consumption of described white phosphorus is for containing
The 10～30% of gold filtering residue weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610715820.8A CN106222436A (en) | 2016-08-24 | 2016-08-24 | A kind of microwave extract method of magnetic iron ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610715820.8A CN106222436A (en) | 2016-08-24 | 2016-08-24 | A kind of microwave extract method of magnetic iron ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106222436A true CN106222436A (en) | 2016-12-14 |
Family
ID=57554523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610715820.8A Pending CN106222436A (en) | 2016-08-24 | 2016-08-24 | A kind of microwave extract method of magnetic iron ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106222436A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385208A (en) * | 2017-07-31 | 2017-11-24 | 中南大学 | A kind of microwave radiation technology, which is strengthened, soaks golden method |
| CN109957661A (en) * | 2019-04-29 | 2019-07-02 | 中南大学 | A kind of microwave reinforced method for recycling chromium from nickel-iron smelting slag and preparing light heat-insulating material |
| CN110898987A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Oxidation desulfurization method of high-sulfur magnetite concentrate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343224A (en) * | 2013-07-29 | 2013-10-09 | 沈少波 | Method for quickly extracting gold from gold-containing material |
| CN103552996A (en) * | 2013-10-21 | 2014-02-05 | 东北大学 | Method for reclaiming tellurium from copper anode slime by microwave acid leaching |
| CN104263962A (en) * | 2014-09-23 | 2015-01-07 | 铜仁市万山区盛和矿业有限责任公司 | Method for extracting gold from pyrrhotite |
| CN104313343A (en) * | 2014-11-11 | 2015-01-28 | 南华大学 | Oxidizing roasting-microwave-assisted leaching gold extraction method for high-arsenic gold-bearing sulfur concentrate |
| CN105036431A (en) * | 2015-08-05 | 2015-11-11 | 铜仁市万山区盛和矿业有限责任公司 | Method for treating mine iron-containing wastewater |
| CN105084395A (en) * | 2015-08-05 | 2015-11-25 | 铜仁市万山区盛和矿业有限责任公司 | Method for producing soluble potassium through potassium feldspar |
-
2016
- 2016-08-24 CN CN201610715820.8A patent/CN106222436A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103343224A (en) * | 2013-07-29 | 2013-10-09 | 沈少波 | Method for quickly extracting gold from gold-containing material |
| CN103552996A (en) * | 2013-10-21 | 2014-02-05 | 东北大学 | Method for reclaiming tellurium from copper anode slime by microwave acid leaching |
| CN104263962A (en) * | 2014-09-23 | 2015-01-07 | 铜仁市万山区盛和矿业有限责任公司 | Method for extracting gold from pyrrhotite |
| CN104313343A (en) * | 2014-11-11 | 2015-01-28 | 南华大学 | Oxidizing roasting-microwave-assisted leaching gold extraction method for high-arsenic gold-bearing sulfur concentrate |
| CN105036431A (en) * | 2015-08-05 | 2015-11-11 | 铜仁市万山区盛和矿业有限责任公司 | Method for treating mine iron-containing wastewater |
| CN105084395A (en) * | 2015-08-05 | 2015-11-25 | 铜仁市万山区盛和矿业有限责任公司 | Method for producing soluble potassium through potassium feldspar |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107385208A (en) * | 2017-07-31 | 2017-11-24 | 中南大学 | A kind of microwave radiation technology, which is strengthened, soaks golden method |
| CN107385208B (en) * | 2017-07-31 | 2019-05-17 | 中南大学 | A kind of microwave-assisted golden method of reinforcing leaching |
| CN109957661A (en) * | 2019-04-29 | 2019-07-02 | 中南大学 | A kind of microwave reinforced method for recycling chromium from nickel-iron smelting slag and preparing light heat-insulating material |
| CN109957661B (en) * | 2019-04-29 | 2020-11-20 | 中南大学 | Method for recovering chromium from ferronickel smelting slag and preparing light heat-insulating material by microwave reinforcement |
| CN110898987A (en) * | 2019-11-13 | 2020-03-24 | 鞍钢集团矿业有限公司 | Oxidation desulfurization method of high-sulfur magnetite concentrate |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104263962B (en) | A kind of method extracting gold from magnetic iron ore | |
| CN107460324B (en) | A kind of method that silver anode slime control current potential prepares four or nine gold medals | |
| CN104988338B (en) | A kind of method utilizing vanadium titano-magnetite to extract vanadium | |
| CN102616824B (en) | Method for preparing ultrafine high-whiteness active barite powder | |
| CN106222436A (en) | A kind of microwave extract method of magnetic iron ore | |
| CN108660326A (en) | A method of reduction acidolysis-leaching is simultaneously except iron handles manganese oxide ore | |
| CN106350670A (en) | Treatment process of pyrrhotite | |
| CN106566925A (en) | Method for achieving acid mixing, curing and leaching of vanadium through stone coal vanadium ore | |
| CN109112306B (en) | Method for treating refractory gold concentrate by combining ozone oxidation and microbial oxidation | |
| Youcai et al. | Molybdenum removal from copper ore concentrate by sodium hypochlorite leaching | |
| CN105200248B (en) | A kind of step of utilization carbide slag one neutralizes the method that titanium white waste acid prepares high-purity scandium | |
| CN101418375A (en) | Liquid membrane extraction of gold-diaphragm electrolysis extraction of gold process | |
| CN109970237A (en) | A kind of cyaniding tailing slurry decyanation processing method | |
| CN104858415B (en) | A kind of washing methods of super fine silver powder | |
| CN112723366A (en) | Process for removing iron and titanium from zircon sand | |
| CN104294058B (en) | A kind of processing method of high-sulfur high-arsenic carbon material gold mine | |
| CN207672103U (en) | A kind of device preparing red mud Ti-enriched slag | |
| CN107746965B (en) | A kind of method of germanium vacuum distillation slag recovery indium germanium | |
| CN104674002A (en) | Bio-leaching process of low-grade copper ores | |
| CN105645706A (en) | Method for harmlessly treating high-zinc and high-lead sludge | |
| CN104831066B (en) | Method for treating primary gold ore | |
| CN104263963B (en) | A kind of method extracting gold from arsenical pyrite | |
| CN107385208A (en) | A kind of microwave radiation technology, which is strengthened, soaks golden method | |
| Cao et al. | A novel hydrometallurgy of molybdenite concentrate and its kinetics | |
| CN103695648B (en) | A kind of method that in zinc wet smelting process, lead smelting gas separates with iron vitriol slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161214 |
|
| RJ01 | Rejection of invention patent application after publication |