CN104760976B - A kind of microwave treatment potassium-bearing shale method of comprehensive utilization - Google Patents
A kind of microwave treatment potassium-bearing shale method of comprehensive utilization Download PDFInfo
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Abstract
The present invention relates to mineral resources comprehensive utilization technical field, especially a kind of microwave treatment potassium-bearing shale method of comprehensive utilization, by carrying out to potassium-bearing shale microwave reaction kettle carries out microwave temperature control reaction treatment, active ingredient in potassium-bearing shale is substantially dissolved in solution, and by multistage absorption process is used to the fluoro-gas in processing procedure, it is to avoid escaping gas empties the environmental pollution bringing；In conjunction with follow-up leachate process, the steps such as solid b process so that the active ingredient in potassium-bearing shale has obtained abundant extraction and application, increases the yield of addition product, improve the added value of potassium-bearing shale comprehensive utilization, reduce potassium-bearing shale comprehensive utilization cost.
Description
Technical field
The present invention relates to mineral resources comprehensive utilization technical field, especially a kind of microwave treatment contains
Potassium shale method of comprehensive utilization.
Background technology
Potassium-bearing shale contains substantial amounts of chemical process raw material, in recent years by substantial amounts of researcher
Explore and study, and then produced substantial amounts of with regard to potassium-bearing shale comprehensive utilization, contain potassium
The correlation technique of shale low-temperature decomposition, but these technology are mostly molten using fluosilicic acid as potassium-bearing shale
Auxiliary agent in solution preocess, although this auxiliary agent can improve the dissolution rate of potassium-bearing shale largely,
The exposed situation of the industrial chemicals in raising potassium-bearing shale, and then improve the synthesis in potassium-bearing shale
Utilization rate, but fluosilicic acid be a kind of deep-etching performance material, the equipment that can result in is damaged
Bad degree is relatively big, and the energy consumption in carrying out potassium-bearing shale processing procedure is relatively big, causes place
Manage relatively costly, and the purity of the product obtaining is relatively low, produce volatility waste gas and carry out secondary
Pollute.And also for there being the related document report using microwave treatment potassium-bearing shale in existing document
Road.
Content of the invention
In order to solve above-mentioned technical problem present in prior art, the present invention provides a kind of microwave
Process potassium-bearing shale method of comprehensive utilization, by carrying out micro-to potassium-bearing shale in microwave reaction kettle
Ripple reaction treatment so that the chemical components in potassium-bearing shale is sufficiently dissolved in the solution,
And by carrying out multistage absorption to the volatility waste gas (fluoro-gas) producing, reduce emptying
The environmental pollution bringing, reduces the cost to potassium-bearing shale comprehensive utilization, improves comprehensive utilization
By the purity of the product that potassium-bearing shale obtains.
It is achieved particular by techniques below scheme:
A kind of microwave treatment potassium-bearing shale method of comprehensive utilization, comprises the following steps:
(1) microwave reaction: potassium bearing rock is placed in pulverizer and is crushed to 60-180 mesh, obtain
Obtain potassium-bearing shale powder, and be the ammonium fluoride of 8-40%, mass concentration by powder and mass concentration
For 40-98% sulfuric acid according to mass volume ratio be (0.9-1.1): (0.5-3): (0.1-1) is carried out
Mixing, it is thus achieved that compound, and be placed in microwave reaction kettle, adjust microwave frequency, make to mix
Closing the temperature expected and maintaining 80-110 DEG C of reacting treatment time is >=10min, then is carried out solid-liquid
Separate, obtain liquid a and solid a, solid a is back in pulverizer again pulverize,
And after repeat the above steps 2-3 time, the solid slag transport obtaining is made factory's system to construction material
Make construction material, the liquid of acquisition is merged, obtains leachate；And will be at microwave reaction
During the gas that produces be passed through multistage absorption tower and carry out multistage absorption, it is thus achieved that ammonium fluoride product；
(2) leachate reaction: by step 1) leachate and the nertralizer that obtain carry out mixing
Raw neutralize reaction so that the PH of leachate is 6.5-7.5, and be placed in filter and carried out
Filter process, it is thus achieved that solid b and liquid b, solid b is stand-by, after liquid b is carried out concentrate drying,
Obtain potash fertilizer；
(3) solid b process: be that the hydrochloric acid of 0.5-4mol/L is according to matter by solid b and molar concentration
Amount volume ratio is (0.9-1.1): after (0.1-3) mixes, and is placed on micro-wave oven reaction
In kettle, microwave frequency control material temperature is used to be 70-100 DEG C, reaction time >=5min, then to it
According to 1:0.01-1 ratio row add additive, insulation curing obtain PAFC.
The time that described potassium-bearing shale powder and ammonium fluoride and sulfuric acid react is
10-60min。
Described multistage absorption is that 1-4 level absorbs.
Described absorbent is the ammoniacal liquor that mass concentration is 5-30%.
Described nertralizer is calcium oxide, ammoniacal liquor, the one in NaOH.
Concentrate drying temperature when described liquid b carries out concentrate drying is 30-40 DEG C, is dried extremely
Moisture is 3-7%.
Described additive be iron oxide, iron hydroxide, aluminium hydroxide, aluminum oxide, ferric sulfate,
One in aluminum sulfate.
Described solid b is 5-80min with the time of hydrochloric acid reaction.
Described insulation, its temperature is 50-70 DEG C.
Described curing, the curing time is 2-6h.
The microwave frequency that the present invention uses is 30-30000MHz.Optimum microwave frequency of choosing is
4000-6000MHz, is further preferably 5000MHz.
When using microwave treatment, use microwave according to microwave frequency 1-300MHz/min gradient
From 0MHz/min rising process so that after temperature reaches to maintain temperature, constantly adjust Microwave Frequency
Rate so that the temperature in microwave reaction kettle maintains.
Compared with prior art, the technique effect of the present invention is embodied in:
The present invention is by carrying out to potassium-bearing shale carrying out in microwave reaction kettle at microwave temperature control reaction
Reason so that the active ingredient in potassium-bearing shale is substantially dissolved in solution, and by processing
Fluoro-gas in journey uses multistage absorption process, it is to avoid escaping gas empties the ring bringing
Environment pollution；In conjunction with steps such as follow-up leachate process, solid b process so that page containing potassium
Active ingredient in rock has obtained abundant extraction and application, increases the yield of addition product, carries
The high added value of potassium-bearing shale comprehensive utilization, reduces potassium-bearing shale comprehensive utilization cost.
By pulverizing potassium-bearing shale in the present invention, and control the grain of the powder after pulverizing
Degree, it is to avoid the ratio that the active ingredient in potassium-bearing shale is dissolved in the solution is relatively low, also avoids
Potassium-bearing shale powder is meticulous to be caused reaction fierce and produces pulp phenomenon, improves acquisition
The quality of product and purity.
It is controlled potassium-bearing shale material temperature in a kettle. by using microwave frequency again, enter
And ensure that the abundant leaching of the active ingredient in potassium-bearing shale, improve potassium-bearing shale comprehensive utilization
By rate, reduce potassium-bearing shale comprehensive utilization cost.
Furthermore, in conjunction with follow-up further process, the multistage absorption of volatilization gas, additive
Choose, and the temperature during potash fertilizer concentrate drying is control and insulation and curing makes poly-
The temperature and time closing aluminium chloride ferrum is controlled, and then reduces energy consumption, shortens preparation stream
Journey, improves the purity of product, reduces production cost.
Brief description
Fig. 1 is the process chart of the microwave treatment potassium-bearing shale method of comprehensive utilization of the present invention.
Detailed description of the invention
With specific embodiment, technical scheme is done into one below in conjunction with the accompanying drawings
The restriction of step, but claimed scope is not only limited to description.
Embodiment 1
As it is shown in figure 1, a kind of microwave treatment potassium-bearing shale method of comprehensive utilization, including following step
Rapid:
(1) microwave reaction: potassium bearing rock is placed in pulverizer and is crushed to 60 mesh, it is thus achieved that contain
Potassium slate flour, and be 40% by ammonium fluoride, mass concentration that powder and mass concentration are 8%
Sulfuric acid is that 0.9:0.5:0.1 mixes according to mass volume ratio, it is thus achieved that compound, and is put
In microwave reaction kettle, adjust microwave frequency, make the temperature of compound maintain at 80 DEG C of reactions
The reason time is 10min, then is carried out separation of solid and liquid, obtains liquid a and solid a, by solid a
It is back to pulverizer is pulverized again, and after repeat the above steps 2 times, by consolidating of obtaining
Body slag transport to construction material makes factory and makes construction material, merges the liquid of acquisition,
Obtain leachate；And the gas by generation during microwave reaction is passed through multistage absorption tower and carries out
Multistage absorption, it is thus achieved that ammonium fluoride product；
(2) leachate reaction: by step 1) leachate and the nertralizer that obtain carry out mixing
Raw neutralize reaction so that the PH of leachate is 6.5, and be placed in filter and filter
Process, it is thus achieved that solid b and liquid b, solid b is stand-by, after liquid b is carried out concentrate drying, obtains
Obtain potash fertilizer；
(3) solid b process: be that the hydrochloric acid of 0.5mol/L is according to matter by solid b and molar concentration
Amount volume ratio is after 0.9:0.1 mixes, and is placed in micro-wave oven reactor, uses microwave
FREQUENCY CONTROL material temperature is 70 DEG C, reaction time 5min, then is added thereto to additive, is incubated ripe
Change and obtain PAFC.
Described multistage absorption is 1 grade of absorption.
Described absorbent is the ammoniacal liquor that mass concentration is 5%.
Described nertralizer is calcium oxide.
Concentrate drying temperature when described liquid b carries out concentrate drying is 30 DEG C, is dried to water
Content is divided to be 7%.
Described additive is iron oxide.
Described insulation, its temperature is 50 DEG C.
Described curing, the curing time is 2h.
The microwave frequency using is 30MHz.When using microwave treatment, use microwave according to micro-
Ripple frequency 1MHz/min gradient is from 0MHz/min rising process so that temperature reaches to maintain temperature
After, constantly adjust microwave frequency so that the temperature in microwave reaction kettle maintains.
Embodiment 2
Such as Fig. 1, a kind of microwave treatment potassium-bearing shale method of comprehensive utilization, comprise the following steps:
(1) microwave reaction: potassium bearing rock is placed in pulverizer and is crushed to 180 mesh, it is thus achieved that contain
Potassium slate flour, and be 98% by ammonium fluoride, mass concentration that powder and mass concentration are 40%
Sulfuric acid is that 1.1:3:1 mixes according to mass volume ratio, it is thus achieved that compound, and is placed on micro-
In ripple reactor, adjust microwave frequency, make the temperature of compound maintain 110 DEG C of reaction treatment
Time is 60min, then is carried out separation of solid and liquid, obtains liquid a and solid a, returns solid a
It is back to pulverizer is pulverized again, and after repeat the above steps 3 times, the solid that will obtain
Slag transport to construction material makes factory and makes construction material, merges the liquid of acquisition,
To leachate；And the gas producing during microwave reaction is passed through in multistage absorption tower employing
Absorbent carries out multistage absorption, it is thus achieved that ammonium fluoride product；
(2) leachate reaction: by step 1) leachate and the nertralizer that obtain carry out mixing
Raw neutralize reaction so that the PH of leachate is 7.5, and be placed in filter and filter
Process, it is thus achieved that solid b and liquid b, solid b is stand-by, after liquid b is carried out concentrate drying, obtains
Obtain potash fertilizer；
(3) solid b process: be that the hydrochloric acid of 4mol/L is according to quality by solid b and molar concentration
Volume ratio is after 1.1:3 mixes, and is placed in micro-wave oven reactor, uses microwave frequency
Control material temperature is 100 DEG C, reaction time 80min, then is added thereto to additive, insulation curing
Obtain PAFC.
Described multistage absorption is 4 grades of absorptions.
Described absorbent is the ammoniacal liquor that mass concentration is 30%.
Described nertralizer is ammoniacal liquor.
Concentrate drying temperature when described liquid b carries out concentrate drying is 40 DEG C, is dried to water
Content is divided to be 3%.
Described additive is iron hydroxide.
Described insulation, its temperature is 70 DEG C.
Described curing, the curing time is 6h.
The microwave frequency using is 30000MHz.When using microwave treatment, microwave is used to press
According to microwave frequency 300MHz/min gradient from 0MHz/min rising process so that temperature reaches dimension
After holding temperature, constantly adjust microwave frequency so that the temperature in microwave reaction kettle maintains.
Embodiment 3
As it is shown in figure 1, a kind of microwave treatment potassium-bearing shale method of comprehensive utilization, including following step
Rapid:
(1) microwave reaction: potassium bearing rock is placed in pulverizer and is crushed to 120 mesh, it is thus achieved that contain
Potassium slate flour, and be 55% by ammonium fluoride, mass concentration that powder and mass concentration are 33%
Sulfuric acid is that 1:2:0.7 mixes according to mass volume ratio, it is thus achieved that compound, and is placed on micro-
In ripple reactor, adjust microwave frequency, when making the temperature of compound maintain 90 DEG C of reaction treatment
Between be 40min, then carried out separation of solid and liquid, obtained liquid a and solid a, solid a is returned
Again pulverize to pulverizer, and after repeat the above steps 2 times, the solid slag that will obtain
Transport to construction material makes factory and makes construction material, merges the liquid of acquisition, obtains
Leachate；And it is passed through the gas producing during microwave reaction in multistage absorption tower employing suction
Receive agent and carry out multistage absorption, it is thus achieved that ammonium fluoride product；
(2) leachate reaction: by step 1) leachate and the nertralizer that obtain carry out mixing
Raw neutralize reaction so that the PH of leachate is 7, and be placed in filter and carry out at filtration
Reason, it is thus achieved that solid b and liquid b, solid b is stand-by, after liquid b is carried out concentrate drying, it is thus achieved that
Potash fertilizer；
(3) solid b process: be that the hydrochloric acid of 3mol/L is according to quality by solid b and molar concentration
Volume ratio is after 1:2 mixes, and is placed in micro-wave oven reactor, uses microwave frequency
Control material temperature is 80 DEG C, reaction time 55min, then is added thereto to additive, insulation curing
Obtain PAFC.
Described multistage absorption is 3 grades of absorptions.
Described absorbent is the ammoniacal liquor that mass concentration is 15%.
Described nertralizer is NaOH.
Concentrate drying temperature when described liquid b carries out concentrate drying is 35 DEG C, is dried to water
Content is divided to be 5%.
Described additive is aluminium hydroxide.
Described solid b is 30min with the time of hydrochloric acid reaction.
Described insulation, its temperature is 60 DEG C.
Described curing, the curing time is 4h.
The microwave frequency using is 4000MHz.
Use microwave treatment when, use microwave according to microwave frequency 200MHz/min gradient from
0MHz/min rising process so that after temperature reaches to maintain temperature, constantly adjusts microwave frequency,
Temperature in microwave reaction kettle is maintained.
Embodiment 4
As it is shown in figure 1, a kind of microwave treatment potassium-bearing shale method of comprehensive utilization, including following step
Rapid:
(1) microwave reaction: potassium bearing rock is placed in pulverizer and is crushed to 80 mesh, it is thus achieved that contain
Potassium slate flour, and by powder and mass concentration be the ammonium fluoride of 8-40%, mass concentration be 77%
Sulfuric acid is that 1.1:1.5:0.5 mixes according to mass volume ratio, it is thus achieved that compound, and is put
In microwave reaction kettle, adjust microwave frequency, make the temperature of compound maintain 100 DEG C of reactions
The process time is 40min, then is carried out separation of solid and liquid, obtains liquid a and solid a, will be solid
Body a is back to again pulverize in pulverizer, and after repeat the above steps 3 times, by obtain
Solid slag transport to construction material makes factory and makes construction material, closes the liquid of acquisition
And, obtain leachate；And the gas producing during microwave reaction is passed through multistage absorption tower
Middle employing absorbent carries out multistage absorption, it is thus achieved that ammonium fluoride product；
(2) leachate reaction: by step 1) leachate and the nertralizer that obtain carry out mixing
Raw neutralize reaction so that the PH of leachate is 7.3, and be placed in filter and filter
Process, it is thus achieved that solid b and liquid b, solid b is stand-by, after liquid b is carried out concentrate drying, obtains
Obtain potash fertilizer；
(3) solid b process: be that the hydrochloric acid of 2.5mol/L is according to matter by solid b and molar concentration
Amount volume ratio is after 1:1.7 mixes, and is placed in micro-wave oven reactor, uses Microwave Frequency
Rate control material temperature is 80 DEG C, reaction time 45min, then is added thereto to additive, is incubated ripe
Change and obtain PAFC.
Described multistage absorption is 2 grades of absorptions.
Described absorbent is the ammoniacal liquor that mass concentration is 25%.
Described nertralizer is NaOH.
Concentrate drying temperature when described liquid b carries out concentrate drying is 33 DEG C, is dried to water
Content is divided to be 6%.
Described additive is aluminum oxide.
Described insulation, its temperature is 59 DEG C.
Described curing, the curing time is 3h.
The microwave frequency using is 6000MHz.
Use microwave treatment when, use microwave according to microwave frequency 100MHz/min gradient from
0MHz/min rising process so that after temperature reaches to maintain temperature, constantly adjusts microwave frequency,
Temperature in microwave reaction kettle is maintained.
Embodiment 5
As it is shown in figure 1, on the basis of embodiment 1, other steps are with embodiment 1, therein
Additive is ferric sulfate.The microwave frequency using is 5000MHz.
Use microwave treatment when, use microwave according to microwave frequency 50MHz/min gradient from
0MHz/min rising process so that after temperature reaches to maintain temperature, constantly adjusts microwave frequency,
Temperature in microwave reaction kettle is maintained.
Embodiment 6
As it is shown in figure 1, on the basis of embodiment 2, other steps are with embodiment 2, therein
Additive is aluminum sulfate.The microwave frequency using is 3000MHz.When using microwave treatment,
Use microwave according to microwave frequency 150MHz/min gradient from 0MHz/min rising process so that
After temperature reaches to maintain temperature, constantly adjust microwave frequency so that the temperature in microwave reaction kettle
Maintain.
Embodiment 7
As it is shown in figure 1, on the basis of embodiment 3, other steps are with embodiment 3, therein
Additive is aluminium hydroxide.The microwave frequency using is 2000MHz.When using microwave treatment,
Use microwave according to microwave frequency 250MHz/min gradient from 0MHz/min rising process so that
After temperature reaches to maintain temperature, constantly adjust microwave frequency so that the temperature in microwave reaction kettle
Maintain.
Embodiment 8
As it is shown in figure 1, on the basis of embodiment 4, other, all with embodiment 4, will contain potassium rock
Stone flour is broken to 100 mesh and 18% auxiliary agent ammonium fluoride, 98% sulfuric acid are 1:3 according to mass volume ratio:
The ratio of 0.6 mixes, and is placed in microwave reaction kettle control material temperature 110 DEG C, during control reaction
Between be 30min.The fluoro-gas that microwave reaction produces, through two grades of absorptions, obtains ammonium fluoride and produces
Product, separation of solid and liquid after reaction, add calcium oxide to be neutralized reaction in the liquid obtaining, in
With separation of solid and liquid again after reaction, the liquid of isolated obtains potash fertilizer by concentrate drying and produces
Product, by the hydrochloric acid of solid and 1mol/L that neutralizes after separating according to the ratio that mass volume ratio is 1:2
Row mix and are placed in microwave reactor control material temperature 100 DEG C, and reaction makes solid dissolve, presses
It is that 1:0.08 adds ferric sulfate according to mass volume ratio, control holding temperature 60 DEG C, cure 4 hours,
Obtain aluminium polychloride iron product.The microwave frequency using is 7000MHz.
Use microwave treatment when, use microwave according to microwave frequency 210MHz/min gradient from
0MHz/min rising process so that after temperature reaches to maintain temperature, constantly adjusts microwave frequency,
Temperature in microwave reaction kettle is maintained.
Embodiment 9
As it is shown in figure 1, in embodiment, on the basis of 3, other, all with embodiment 3, will contain potassium rock
Stone flour is broken to 80 mesh and 25% auxiliary agent ammonium fluoride, 70% sulfuric acid are 1:1.5 according to mass volume ratio:
The ratio of 0.5 mixes, and is placed in microwave reaction kettle control material temperature 100 DEG C, during control reaction
Between be 20min.The fluoro-gas that microwave reaction produces, through three grades of absorptions, obtains ammonium fluoride and produces
Product, separation of solid and liquid after reaction, add NaOH to be neutralized reaction in the liquid obtaining,
Neutralizing separation of solid and liquid again after reaction, the liquid of isolated obtains potash fertilizer by concentrate drying and produces
Product, by the hydrochloric acid of solid and 2mol/L that neutralizes after separating according to the ratio that mass volume ratio is 1:1
Row mix and are placed in microwave reactor control material temperature 90 DEG C, and reaction makes solid dissolve, according to
Mass volume ratio is that 1:0.05 adds ferric sulfate, controls holding temperature 70 DEG C, cures 3 hours,
To aluminium polychloride iron product.
Be necessary explanation at this, above example is only limitted to do technical scheme
Further elucidated above and explanation, is not the further restriction to technical scheme,
The essential characteristics of the non-protruding that those skilled in the art make on this basis and non-significant are entered
The improvement of step, belongs to the protection category of the present invention.
Claims (10)
1. a microwave treatment potassium-bearing shale method of comprehensive utilization, it is characterised in that comprise the following steps:
(1) microwave reaction: potassium bearing rock is placed in pulverizer and is crushed to 60-180 mesh, it is thus achieved that potassium-bearing shale
Powder, and by powder and mass concentration be the ammonium fluoride of 8-40%, mass concentration be that 40-98% sulfuric acid is according to matter
Amount volume ratio is (0.9-1.1): (0.5-3): (0.1-1) mixes, it is thus achieved that compound, and is put
In microwave reaction kettle, adjust microwave frequency, when making the temperature of compound maintain 80-110 DEG C of reaction treatment
Between for >=10min, then carried out separation of solid and liquid, obtain liquid a and solid a, solid a is back to pulverizer
In again pulverize, and after repeat the above steps 2-3 time, transport the solid slag obtaining to construction material system
Make factory and make construction material, the liquid of acquisition is merged, obtains leachate；And will be in microwave reaction mistake
The gas producing in journey is passed through in multistage absorption tower and carries out multistage absorption, it is thus achieved that ammonium fluoride product；
(2) leachate reaction: by step 1) leachate and the nertralizer that obtain carry out mix generation neutralization instead
Should so that the PH of leachate is 6.5-7.5, and be placed in filter and carry out filtration treatment, it is thus achieved that solid
B and liquid b, solid b is stand-by, after liquid b is carried out concentrate drying, it is thus achieved that potash fertilizer；
(3) solid b process: be that the hydrochloric acid of 0.5-4mol/L is according to mass volume ratio by solid b and molar concentration
It for (0.9-1.1): after (0.1-3) mixes, is placed in microwave reaction kettle, use microwave frequency control
Material temperature processed is 70-100 DEG C, reaction time >=5min, then adds additive according to the ratio row of 1:0.01-1 wherein,
Insulation curing obtains PAFC.
2. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The time that the potassium-bearing shale powder stated reacts with ammonium fluoride and sulfuric acid is 10-60min.
3. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The multistage absorption stated is that 2-4 level absorbs.
4. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The absorption stated, its absorbent using is the ammoniacal liquor that mass concentration is 5-30%.
5. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The nertralizer stated is calcium oxide, ammoniacal liquor, the one in NaOH.
6. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
Concentrate drying temperature when the liquid b stating carries out concentrate drying is 30-40 DEG C, and drying to moisture is 3-7%.
7. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The additive stated be iron oxide, iron hydroxide, aluminium hydroxide, aluminum oxide, ferric sulfate, in aluminum sulfate one
Kind.
8. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The solid b stating is 5-80min with the time of hydrochloric acid reaction.
9. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The insulation stated, its temperature is 50-70 DEG C.
10. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterised in that institute
The curing stated, the curing time is 2-6h.
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| CN105060350A (en) * | 2015-08-04 | 2015-11-18 | 贵州远盛钾业科技有限公司 | Production method of iron oxide by utilizing potassium-bearing rock |
| CN105060327B (en) * | 2015-08-04 | 2017-05-31 | 贵州远盛钾业科技有限公司 | A kind of method that utilization potassium bearing rock prepares bauxite |
| 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 |
| CN108409360B (en) * | 2018-02-27 | 2021-02-12 | 延边大学 | Method for releasing potassium by microwave-assisted acid leaching of illite |
| CN110540220A (en) * | 2019-08-14 | 2019-12-06 | 包头钢铁（集团）有限责任公司 | waste-free efficient utilization method of potassium-rich slate |
| CN110451528B (en) * | 2019-08-14 | 2022-09-23 | 包头钢铁（集团）有限责任公司 | Waste-free utilization method for extracting potassium chloride from potassium-rich slate |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603367A (en) * | 2012-03-05 | 2012-07-25 | 华南农业大学 | Physical and chemical comprehensive release promotion method of non-water-soluble potassium ore |
| CN103787421A (en) * | 2013-12-24 | 2014-05-14 | 贵州远盛钾业科技有限公司 | Comprehensive utilization method of sylvine-containing rock |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603367A (en) * | 2012-03-05 | 2012-07-25 | 华南农业大学 | Physical and chemical comprehensive release promotion method of non-water-soluble potassium ore |
| CN103787421A (en) * | 2013-12-24 | 2014-05-14 | 贵州远盛钾业科技有限公司 | Comprehensive utilization method of sylvine-containing rock |
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