CN104760976A - Comprehensive utilization method of potassium-containing shale by microwave treatment - Google Patents
Comprehensive utilization method of potassium-containing shale by microwave treatment Download PDFInfo
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Abstract
The invention relates to the technical field of comprehensive utilization of mineral product resource, and especially relates to a comprehensive utilization method of potassium-containing shale by microwave treatment. The method is characterized in that microwave temperature control reaction treatment is carried out on potassium-containing shale in a microwave reaction vessel, active ingredients in the potassium-containing shale can be fully dissolved in a solution, multi-stage absorption treatment is employed on fluorine-containing gas in the processing process, environmental pollution due to evacuation of volatile gas can be avoided, then steps of subsequent leachate processing and solid b treatment are combined, active ingredients in the potassium-containing shale can be fully extracted and used, additional product output is increased, added value of comprehensive utilization of the potassium-containing shale is increased, and comprehensive utilization cost of the potassium-containing shale is reduced.
Description
Technical field
The present invention relates to mineral resources comprehensive utilization technical field, especially a kind of microwave treatment potassium-bearing shale method of comprehensive utilization.
Background technology
Containing a large amount of chemical technique raw materials in potassium-bearing shale, Exploration & stu dy is being carried out in recent years by a large amount of investigators, and then produced a large amount of fully utilizing about potassium-bearing shale, the correlation technique of potassium-bearing shale low-temperature decomposition, but these technology greatly mainly with silicofluoric acid as the auxiliary agent in potassium-bearing shale dissolution process, although this auxiliary agent can improve the dissolution rate of potassium-bearing shale largely, improve the exposed situation of the industrial chemicals in potassium-bearing shale, and then the comprehensive utilization ratio in raising potassium-bearing shale, but silicofluoric acid be a kind of deep-etching performance material, the impaired degree of equipment can be caused larger, and the energy consumption in potassium-bearing shale treating processes is larger carrying out, cause processing cost higher, and the purity of the product obtained is lower, produce volatility waste gas and carry out secondary pollution.And also for there being the relevant bibliographical information adopting microwave treatment potassium-bearing shale in existing document.
Summary of the invention
In order to solve the above-mentioned technical problem existed in prior art, the invention provides a kind of microwave treatment potassium-bearing shale method of comprehensive utilization, by carrying out microwave reaction process to potassium-bearing shale in microwave reaction kettle, chemical components in potassium-bearing shale is dissolved in the solution fully, and by carrying out multistage absorption to the volatility waste gas (fluoro-gas) produced, reduce the emptying environmental pollution brought, reduce the cost to potassium-bearing shale comprehensive utilization, improve the purity of the product that comprehensive utilization potassium-bearing shale obtains.
Be achieved particular by following technical 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 order, obtain potassium-bearing shale powder, and be the Neutral ammonium fluoride of 8-40% by powder and mass concentration, mass concentration is 40-98% sulfuric acid is (0.9-1.1) according to mass volume ratio: (0.5-3): (0.1-1) mixes, obtain compound, and be placed in microwave reaction kettle, adjustment microwave frequency, making the temperature of compound maintain 80-110 DEG C of reacting treatment time is >=10min, carried out solid-liquid separation again, obtain liquid a and solid a, solid a is back in pulverizer and again pulverizes, and after repeating above-mentioned steps 2-3 time, the solid slag of acquisition is transported to material of construction and makes factory's making material of construction, the liquid of acquisition is merged, obtain leach liquor, and the gas produced in microwave reaction process is passed into multistage absorption tower carry out multistage absorption, obtain Neutral ammonium fluoride product,
(2) leach liquor reaction: by step 1) leach liquor and the neutralizing agent that obtain carry out mixing neutralization reaction occur, the PH of leach liquor is made to be 6.5-7.5, and be placed in filter and carry out filtration treatment, obtain 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 the hydrochloric acid of 0.5-4mol/L by solid b and volumetric molar concentration be (0.9-1.1) according to mass volume ratio: after (0.1-3) mixes, be placed in microwave oven reactor, adopting microwave frequency to control material temperature is 70-100 DEG C, reaction times >=5min, add additive according to the ratio row of 1:0.01-1 wherein again, insulation slaking obtains aluminium iron polychloride.
The time that described potassium-bearing shale powder and Neutral ammonium fluoride and sulfuric acid carry out reacting is 10-60min.
Described multistage absorption is that 1-4 level absorbs.
The ammoniacal liquor of described absorption agent to be mass concentration be 5-30%.
Described neutralizing agent is the one in calcium oxide, ammoniacal liquor, sodium hydroxide.
Concentrate drying temperature when described liquid b carries out concentrate drying is 30-40 DEG C, and being dried to moisture content is 3-7%.
Described additive is the one in ferric oxide, ironic hydroxide, aluminium hydroxide, aluminum oxide, ferric sulfate, Tai-Ace S 150.
Described solid b and the time of hydrochloric acid reaction are 5-80min.
Described insulation, its temperature is 50-70 DEG C.
Described slaking, the curing time is 2-6h.
The microwave frequency that the present invention adopts is 30-30000MHz.Optimum microwave frequency of choosing is 4000-6000MHz, then is preferably 5000MHz.
When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 1-300MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Compared with prior art, technique effect of the present invention is embodied in:
The present invention is by carrying out potassium-bearing shale carrying out microwave temperature control reaction treatment in microwave reaction kettle, effective constituent in potassium-bearing shale is fully dissolved in the solution, and by adopting multistage absorption process to the fluoro-gas in treating processes, avoid the emptying environmental pollution brought of volatile gases; Again in conjunction with follow-up leach liquor process, the steps such as solid b process, make the effective constituent in potassium-bearing shale obtain and fully extract and application, increase the output of addition product, improve the added value of potassium-bearing shale comprehensive utilization, reduce potassium-bearing shale comprehensive utilization cost.
By pulverizing potassium-bearing shale in the present invention, and control the granularity of the powder after pulverizing, the ratio avoiding the effective constituent in potassium-bearing shale to be dissolved in solution is lower, it also avoid that potassium-bearing shale powder is meticulous causes reaction fierce and produce pulp phenomenon, improve quality and the purity of the product of acquisition.
Again by adopting microwave frequency to carry out controlling potassium-bearing shale material temperature in a kettle., and then ensure that the abundant leaching of the effective constituent in potassium-bearing shale, improve potassium-bearing shale comprehensive utilization ratio, reduce potassium-bearing shale comprehensive utilization cost.
Moreover, in conjunction with follow-up further process, the multistage absorption of volatilization gas, choosing of additive, and the temperature in potash fertilizer concentrate drying process is to control and the temperature and time of insulation and slaking making aluminium iron polychloride controls, and then reduces energy consumption, shortens preparation flow, improve the purity of product, reduce production cost.
Accompanying drawing explanation
Fig. 1 is the process flow sheet of microwave treatment potassium-bearing shale method of comprehensive utilization of the present invention.
Embodiment
Below in conjunction with accompanying drawing and concrete embodiment, further restriction is done to technical scheme of the present invention, but claimed scope is not only confined to done description.
Embodiment 1
As shown in Figure 1, 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 orders, obtain potassium-bearing shale powder, and be the Neutral ammonium fluoride of 8% by powder and mass concentration, mass concentration is 40% sulfuric acid is that 0.9:0.5:0.1 mixes according to mass volume ratio, obtain compound, and be placed in microwave reaction kettle, adjustment microwave frequency, making the temperature of compound maintain 80 DEG C of reacting treatment times is 10min, carried out solid-liquid separation again, obtain liquid a and solid a, solid a is back in pulverizer and again pulverizes, and after repeating above-mentioned steps 2 times, the solid slag of acquisition is transported to material of construction and makes factory's making material of construction, the liquid of acquisition is merged, obtain leach liquor, and the gas produced in microwave reaction process is passed into multistage absorption tower carry out multistage absorption, obtain Neutral ammonium fluoride product,
(2) leach liquor reaction: by step 1) leach liquor and the neutralizing agent that obtain carry out mixing neutralization reaction occur, the PH of leach liquor is made to be 6.5, and be placed in filter and carry out filtration treatment, obtain 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 the hydrochloric acid of 0.5mol/L by solid b and volumetric molar concentration be after 0.9:0.1 mixes according to mass volume ratio, be placed in microwave oven reactor, adopting microwave frequency to control material temperature is 70 DEG C, reaction times 5min, add additive wherein again, insulation slaking obtains aluminium iron polychloride.
Described multistage absorption is 1 grade of absorption.
Described absorption agent to be mass concentration be 5% ammoniacal liquor.
Described neutralizing agent is calcium oxide.
Concentrate drying temperature when described liquid b carries out concentrate drying is 30 DEG C, and being dried to moisture content is 7%.
Described additive is ferric oxide.
Described insulation, its temperature is 50 DEG C.
Described slaking, the curing time is 2h.
The microwave frequency adopted is 30MHz.When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 1MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 2
As Fig. 1, 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 180 orders, obtain potassium-bearing shale powder, and be the Neutral ammonium fluoride of 40% by powder and mass concentration, mass concentration is 98% sulfuric acid is that 1.1:3:1 mixes according to mass volume ratio, obtain compound, and be placed in microwave reaction kettle, adjustment microwave frequency, making the temperature of compound maintain 110 DEG C of reacting treatment times is 60min, carried out solid-liquid separation again, obtain liquid a and solid a, solid a is back in pulverizer and again pulverizes, and after repeating above-mentioned steps 3 times, the solid slag of acquisition is transported to material of construction and makes factory's making material of construction, the liquid of acquisition is merged, obtain leach liquor, and the gas produced in microwave reaction process is passed in multistage absorption tower adopt absorption agent to carry out multistage absorption, obtain Neutral ammonium fluoride product,
(2) leach liquor reaction: by step 1) leach liquor and the neutralizing agent that obtain carry out mixing neutralization reaction occur, the PH of leach liquor is made to be 7.5, and be placed in filter and carry out filtration treatment, obtain 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 the hydrochloric acid of 4mol/L by solid b and volumetric molar concentration be after 1.1:3 mixes according to mass volume ratio, be placed in microwave oven reactor, adopting microwave frequency to control material temperature is 100 DEG C, reaction times 80min, add additive wherein again, insulation slaking obtains aluminium iron polychloride.
Described multistage absorption is 4 grades of absorptions.
Described absorption agent to be mass concentration be 30% ammoniacal liquor.
Described neutralizing agent is ammoniacal liquor.
Concentrate drying temperature when described liquid b carries out concentrate drying is 40 DEG C, and being dried to moisture content is 3%.
Described additive is ironic hydroxide.
Described insulation, its temperature is 70 DEG C.
Described slaking, the curing time is 6h.
The microwave frequency adopted is 30000MHz.When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 300MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 3
As shown in Figure 1, 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 120 orders, obtain potassium-bearing shale powder, and be the Neutral ammonium fluoride of 33% by powder and mass concentration, mass concentration is 55% sulfuric acid is that 1:2:0.7 mixes according to mass volume ratio, obtain compound, and be placed in microwave reaction kettle, adjustment microwave frequency, making the temperature of compound maintain 90 DEG C of reacting treatment times is 40min, carried out solid-liquid separation again, obtain liquid a and solid a, solid a is back in pulverizer and again pulverizes, and after repeating above-mentioned steps 2 times, the solid slag of acquisition is transported to material of construction and makes factory's making material of construction, the liquid of acquisition is merged, obtain leach liquor, and the gas produced in microwave reaction process is passed in multistage absorption tower adopt absorption agent to carry out multistage absorption, obtain Neutral ammonium fluoride product,
(2) leach liquor reaction: by step 1) leach liquor and the neutralizing agent that obtain carry out mixing neutralization reaction occur, the PH of leach liquor is made to be 7, and be placed in filter and carry out filtration treatment, obtain 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 the hydrochloric acid of 3mol/L by solid b and volumetric molar concentration be after 1:2 mixes according to mass volume ratio, be placed in microwave oven reactor, adopting microwave frequency to control material temperature is 80 DEG C, reaction times 55min, add additive wherein again, insulation slaking obtains aluminium iron polychloride.
Described multistage absorption is 3 grades of absorptions.
Described absorption agent to be mass concentration be 15% ammoniacal liquor.
Described neutralizing agent is sodium hydroxide.
Concentrate drying temperature when described liquid b carries out concentrate drying is 35 DEG C, and being dried to moisture content is 5%.
Described additive is aluminium hydroxide.
Described solid b and the time of hydrochloric acid reaction are 30min.
Described insulation, its temperature is 60 DEG C.
Described slaking, the curing time is 4h.
The microwave frequency adopted is 4000MHz.
When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 200MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 4
As shown in Figure 1, 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 80 orders, obtain potassium-bearing shale powder, and be the Neutral ammonium fluoride of 8-40% by powder and mass concentration, mass concentration is 77% sulfuric acid is that 1.1:1.5:0.5 mixes according to mass volume ratio, obtain compound, and be placed in microwave reaction kettle, adjustment microwave frequency, making the temperature of compound maintain 100 DEG C of reacting treatment times is 40min, carried out solid-liquid separation again, obtain liquid a and solid a, solid a is back in pulverizer and again pulverizes, and after repeating above-mentioned steps 3 times, the solid slag of acquisition is transported to material of construction and makes factory's making material of construction, the liquid of acquisition is merged, obtain leach liquor, and the gas produced in microwave reaction process is passed in multistage absorption tower adopt absorption agent to carry out multistage absorption, obtain Neutral ammonium fluoride product,
(2) leach liquor reaction: by step 1) leach liquor and the neutralizing agent that obtain carry out mixing neutralization reaction occur, the PH of leach liquor is made to be 7.3, and be placed in filter and carry out filtration treatment, obtain 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 the hydrochloric acid of 2.5mol/L by solid b and volumetric molar concentration be after 1:1.7 mixes according to mass volume ratio, be placed in microwave oven reactor, adopting microwave frequency to control material temperature is 80 DEG C, reaction times 45min, add additive wherein again, insulation slaking obtains aluminium iron polychloride.
Described multistage absorption is 2 grades of absorptions.
Described absorption agent to be mass concentration be 25% ammoniacal liquor.
Described neutralizing agent is sodium hydroxide.
Concentrate drying temperature when described liquid b carries out concentrate drying is 33 DEG C, and being dried to moisture content is 6%.
Described additive is aluminum oxide.
Described insulation, its temperature is 59 DEG C.
Described slaking, the curing time is 3h.
The microwave frequency adopted is 6000MHz.
When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 100MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 5
As shown in Figure 1, on the basis of embodiment 1, other steps are with embodiment 1, and additive is wherein ferric sulfate.The microwave frequency adopted is 5000MHz.
When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 50MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 6
As shown in Figure 1, on the basis of embodiment 2, other steps are with embodiment 2, and additive is wherein Tai-Ace S 150.The microwave frequency adopted is 3000MHz.When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 150MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 7
As shown in Figure 1, on the basis of embodiment 3, other steps are with embodiment 3, and additive is wherein aluminium hydroxide.The microwave frequency adopted is 2000MHz.When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 250MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 8
As shown in Figure 1, on the basis of embodiment 4, other are all with embodiment 4, potassium bearing rock is crushed to the ratio that 100 orders and 18% auxiliary agent Neutral ammonium fluoride, 98% sulfuric acid are 1:3:0.6 according to mass volume ratio to mix, be placed in microwave reaction kettle and control material temperature 110 DEG C, the control reaction times is 30min.The fluoro-gas that microwave reaction produces absorbs through secondary, obtain Neutral ammonium fluoride product, solid-liquid separation after reaction, in the liquid obtained, add calcium oxide carry out neutralization reaction, solid-liquid separation again after neutralization reaction, be separated the liquid obtained and obtain potash fertilizer products by concentrate drying, the hydrochloric acid of solid and 1mol/L after neutralization being separated arranges to mix according to the ratio that mass volume ratio is 1:2 and is placed in microwave reactor and controls material temperature 100 DEG C, reaction makes dissolution of solid, according to mass volume ratio be 1:0.08 add ferric sulfate, control holding temperature 60 DEG C, slaking 4 hours, obtain polymerize aluminum chloride iron product.The microwave frequency adopted is 7000MHz.
When adopting microwave treatment, adopting microwave to process from 0MHz/min rising according to microwave frequency 210MHz/min gradient, after making temperature reach holding temperature, constantly adjusting microwave frequency, the temperature in microwave reaction kettle is maintained.
Embodiment 9
As shown in Figure 1, in embodiment, on the basis of 3, other are all with embodiment 3, potassium bearing rock is crushed to the ratio that 80 orders and 25% auxiliary agent Neutral ammonium fluoride, 70% sulfuric acid are 1:1.5:0.5 according to mass volume ratio to mix, be placed in microwave reaction kettle and control material temperature 100 DEG C, the control reaction times is 20min.The fluoro-gas that microwave reaction produces is through three grades of absorptions, obtain Neutral ammonium fluoride product, solid-liquid separation after reaction, in the liquid obtained, add sodium hydroxide carry out neutralization reaction, solid-liquid separation again after neutralization reaction, be separated the liquid obtained and obtain potash fertilizer products by concentrate drying, the hydrochloric acid of solid and 2mol/L after neutralization being separated arranges to mix according to the ratio that mass volume ratio is 1:1 and is placed in microwave reactor and controls material temperature 90 DEG C, reaction makes dissolution of solid, according to mass volume ratio be 1:0.05 add ferric sulfate, control holding temperature 70 DEG C, slaking 3 hours, obtain polymerize aluminum chloride iron product.
What be necessary explanation at this is; above embodiment is only limitted to be further elaborated technical scheme of the present invention and illustrate; it is not the further restriction to technical scheme of the present invention; the essential characteristics of the non-protruding that those skilled in the art make on this basis and the improvement of non-significant progress, all belong to protection category of the present invention.
Claims (10)
1. a microwave treatment potassium-bearing shale method of comprehensive utilization, is characterized in that, comprises the following steps:
(1) microwave reaction: potassium bearing rock is placed in pulverizer and is crushed to 60-180 order, obtain potassium-bearing shale powder, and be the Neutral ammonium fluoride of 8-40% by powder and mass concentration, mass concentration is 40-98% sulfuric acid is (0.9-1.1) according to mass volume ratio: (0.5-3): (0.1-1) mixes, obtain compound, and be placed in microwave reaction kettle, adjustment microwave frequency, making the temperature of compound maintain 80-110 DEG C of reacting treatment time is >=10min, carried out solid-liquid separation again, obtain liquid a and solid a, solid a is back in pulverizer and again pulverizes, and after repeating above-mentioned steps 2-3 time, the solid slag of acquisition is transported to material of construction and makes factory's making material of construction, the liquid of acquisition is merged, obtain leach liquor, and the gas produced in microwave reaction process is passed in multistage absorption tower carry out multistage absorption, obtain Neutral ammonium fluoride product,
(2) leach liquor reaction: by step 1) leach liquor and the neutralizing agent that obtain carry out mixing neutralization reaction occur, the PH of leach liquor is made to be 6.5-7.5, and be placed in filter and carry out filtration treatment, obtain 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 the hydrochloric acid of 0.5-4mol/L by solid b and volumetric molar concentration be (0.9-1.1) according to mass volume ratio: after (0.1-3) mixes, be placed in microwave oven reactor, adopting microwave frequency to control material temperature is 70-100 DEG C, reaction times >=5min, add additive according to the ratio row of 1:0.01-1 wherein again, insulation slaking obtains aluminium iron polychloride.
2. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, is characterized in that, the time that described potassium-bearing shale powder and Neutral ammonium fluoride and sulfuric acid carry out reacting is 10-60min.
3. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, is characterized in that, described multistage absorption is that 1-4 level absorbs.
4. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, is characterized in that, the ammoniacal liquor of described absorption agent to be mass concentration be 5-30%.
5. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterized in that, described neutralizing agent is the one in calcium oxide, ammoniacal liquor, sodium hydroxide.
6. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, is characterized in that, concentrate drying temperature when described liquid b carries out concentrate drying is 30-40 DEG C, and being dried to moisture content is 3-7%.
7. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterized in that, described additive is the one in ferric oxide, ironic hydroxide, aluminium hydroxide, aluminum oxide, ferric sulfate, Tai-Ace S 150.
8. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterized in that, described solid b and the time of hydrochloric acid reaction are 5-80min.
9. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterized in that, described insulation, its temperature is 50-70 DEG C.
10. microwave treatment potassium-bearing shale method of comprehensive utilization as claimed in claim 1, it is characterized in that, described slaking, the curing time is 2-6h.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105060327A (en) * | 2015-08-04 | 2015-11-18 | 贵州远盛钾业科技有限公司 | Method for producing bauxite from potassium-containing rocks |
| 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 |
| 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 |
| CN108409360A (en) * | 2018-02-27 | 2018-08-17 | 延边大学 | A kind of method of the efficient Potassium release of microwave radiation technology acidleach illite |
| CN110451528A (en) * | 2019-08-14 | 2019-11-15 | 包头钢铁（集团）有限责任公司 | A kind of nothing for extracting potassium chloride from k-rich slate is useless to utilize method |
| 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 |
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| CN102603367B (en) * | 2012-03-05 | 2013-12-25 | 华南农业大学 | Physical and chemical comprehensive release promotion method of non-water-soluble potassium ore |
| CN103787421B (en) * | 2013-12-24 | 2014-12-17 | 贵州远盛钾业科技有限公司 | Comprehensive utilization method of sylvine-containing rock |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105060327A (en) * | 2015-08-04 | 2015-11-18 | 贵州远盛钾业科技有限公司 | Method for producing bauxite from potassium-containing rocks |
| 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 |
| 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 |
| CN108409360A (en) * | 2018-02-27 | 2018-08-17 | 延边大学 | A kind of method of the efficient Potassium release of microwave radiation technology acidleach illite |
| CN110451528A (en) * | 2019-08-14 | 2019-11-15 | 包头钢铁（集团）有限责任公司 | A kind of nothing for extracting potassium chloride from k-rich slate is useless to utilize method |
| 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 |
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