CN102775219A - Method for preparing nitrogen-phosphorus-potassium compound fertilizer from biotite - Google Patents

Method for preparing nitrogen-phosphorus-potassium compound fertilizer from biotite Download PDF

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CN102775219A
CN102775219A CN2012102984561A CN201210298456A CN102775219A CN 102775219 A CN102775219 A CN 102775219A CN 2012102984561 A CN2012102984561 A CN 2012102984561A CN 201210298456 A CN201210298456 A CN 201210298456A CN 102775219 A CN102775219 A CN 102775219A
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phosphorus
potassium
blotite
compound fertilizer
crystallized product
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李丽娟
宋富根
聂锋
曾忠民
姬连敏
刘志启
吴国君
梁天曙
王�义
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Qinghai Institute of Salt Lakes Research of CAS
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Qinghai Institute of Salt Lakes Research of CAS
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Abstract

The invention relates to a method for preparing a nitrogen-phosphorus-potassium compound fertilizer from biotite, which comprises the following steps: (1) acid pickling: adding biotite powder with the particle size of 20-200 meshes into a sulfuric acid pickling solution to carry out acid pickling, taking out, cooling to room temperature to obtain a solid, adding secondary water to dilute the solid, and separating by filtration to respectively obtain filter residues and a filtrate A; (2) ammonia water neutralization: adding ammonia water to neutralize the filtrate A while stirring, and filtering to respectively obtain mixed precipitates and a filtrate B; and (3) crystallization by evaporation: crystallizing the filtrate B by evaporation to obtain a crystallized product, adding a phosphatic substance into the crystallized product, and preparing the multielement compound fertilizer containing nitrogen, phosphorus, potassium and magnesium by a conventional technique. The preparation method provided by the invention is simple and convenient to operate, has the advantage of short process, prepares the potassium sulfate, ammonium sulfate and magnesium ammonium sulfate from the biotite under relatively mild conditions, and creates a new preparation method of the nitrogen-phosphorus-potassium-magnesium quaternary compound fertilizer.

Description

A kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer
Technical field
The present invention relates to a kind of preparation method of chemical fertilizer, relate in particular to a kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer.
Background technology
Potash fertilizer is a resource leading type industry, and the high concentration that potassium resource distributes has caused the high concentration of world's potash fertilizer industry.Have in the world and surpass 150 country's consumption potash fertilizer; But have only 12 countries (Canada, Russia, Byelorussia, Germany, Israel, Jordan, China, the U.S., Brazil, Chile, Spain, Britain) to produce potash fertilizer; Former manufacturer has controlled production capacity and the output more than 70%, forms typical oligopoly.See from range of product, though the throughput increasing velocity of China's vitriolate of tartar, saltpetre is very fast, respectively with 30% and 20% speed increase, 3,960,000 tons of (K of potash fertilizer output in China in 2010 2O counts), and China's potash fertilizer annual requirement is near 1,100 ten thousand tons of (K 2The O meter), the import interdependency is more than 65%.
World's solid potassium resource is very abundant, and total resources reaches 2,500 hundred million tons.2002, according to US Geological Survey's statistics, nearly 20,000,000,000 tons of soluble potassium resource proven reserve, wherein Russia, Byelorussia, Canada, Germany account for 92% of soluble potassium resource total reserves.There is a serious shortage in the supply for China's soluble potassium resource; Geologic reserve is 9.9 hundred million tons (KCl meters), only accounts for 1.63% of world's total reserves, has only the brave wild well potassium resource of Yunnan Jiang Chengxian mineral deposit; Almost do not have available solid Potash Resources, the liquid salt lake resources is less than 5% of world's Potash Resources.
Utilize water-insoluble potassium ore deposit to carry potassium is the research topic of paying much attention in the world always.Before and after the World War II, Germany has just begun the research of this respect, adopts pyrolysis method to produce potash fertilizer.Also there was the report of potassium felspar sand roasting test in India in 50 ~ seventies of last century.All there is research in countries such as the U.S., Japan, Russia, Mexico, Poland.Integrate and mainly at high temperature adopt auxiliary agent decomposition potassium-bearing mineral to produce potash fertilizer; The insoluble potassium bearing rock that directly utilizes some classification is also arranged; Just directly make potash fertilizer like Norway with blotite; Big multi-method exists technical process length, the mine tailing residue is many, Financial cost is high, thereby the industriallization of being unrealized.Have only the FSU to utilize nepheline syenite to achieve success on a large scale at present.
The water-insoluble potassium ore resources of China is abundant, and of a great variety, like potassium felspar sand, alunite, illite, rich potassium shale, blotite etc., and these potassium ore resources various places that almost spread all over the country, and also reserves are huge, and its total resources of conservative estimation surpasses 20,000,000,000 t.If this type of water-insoluble potassium ore resources is able to mass-producing and efficiently utilizes, then be the effective way that solves China's potash fertilizer shortage.Therefore,, also should explore new technological approaches, make full use of water-insoluble potassium ore resources, thereby effectively solve the deficiency of the water-soluble sylvite resource of China except seeking and developing the water-soluble sylvite resource.Along with to the research of insoluble potassium bearing rock deepen continuously with the sylvite price fast-soaring; The development and utilization of insoluble Potash Resources demonstrates its economic feasibility gradually; Utilize this type of potassium ore deposit to produce sylvite (fertilizer); Be the strategic demand that ensures China's agricultural and national economy sustainable development, have huge potential economic worth.
Blotite is a kind of potassium-bearing mineral (K 2O content about 9.0%).According to the state and the character of potassium-bearing mineral in the soil, the part potassium in the blotite is solubility in citric acid potassium, is the direct supplier of instantly-soluble potassium in the soil.When only the instantly-soluble potassium in soil was absorbed deficiency by plant, solubility in citric acid potassium can partly be absorbed by farm crop.But the effective potassium content in the blotite concentrate only about 1.7%, a large amount of K 2The O farm crop can't directly absorb.Therefore need K a large amount of in the blotite concentrate 2O is converted into available potassium, makes the insoluble or solubility in citric acid potassium in the blotite be converted into instantly-soluble potassium, and is directly absorbed by farm crop.
Summary of the invention
Technical problem to be solved by this invention provides a kind of simple and easy, lower-cost method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer of operating.
For addressing the above problem, a kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer of the present invention may further comprise the steps:
⑴ acidleach: with granularity is that 20 ~ 200 purpose blotite breezes are added in the sulfuric acid immersion liquid, is that 60 ~ 140 ℃, pressure are to carry out acidleach under the non-pressurized condition in temperature of reaction, and time of immersion is 1 ~ 10 hour, takes out then, is cooled to room temperature, obtains solid substance; Add 2 ~ 20 times secondary water dilution of its quality in the said solid substance, separate through filtering then, obtain filter residue and filtrating A respectively; The mass ratio of said blotite breeze and said sulfuric acid immersion liquid is 1:1 ~ 1:5;
⑵ ammoniacal liquor neutralization: said filtrating A is added ammoniacal liquor neutralize under whipped state, the warp filtration obtains mixed precipitation and sulfur acid potassium, the ammonium sulfate of Marinco H, ironic hydroxide, ferrous hydroxide, white lake, the liquor B of ammonium sulfate magnesium respectively;
⑶ evaporative crystallization: said liquor B is carried out evaporative crystallization obtain crystallized product, in said crystallized product, add phosphorus containg substances then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process; The mass ratio of said crystallized product and said phosphorus containg substances is 1:0.1 ~ 1:5.
Sulfuric acid immersion liquid among the said step ⑴ is meant that containing mass percent concentration is 20% ~ 80% vitriolic solution.
Vaporization temperature among the said step ⑶ is 130 ~ 170 ℃.
Phosphorus in the phosphorus containg substances among the said step ⑶ is by Vanadium Pentoxide in FLAKES, and the quality percentage composition of Vanadium Pentoxide in FLAKES is not less than 30%.
The present invention compared with prior art has the following advantages:
1, the present invention prepares vitriolate of tartar, ammonium sulfate, ammonium sulfate magnesium with blotite under gentle relatively condition, has initiated the novel preparation method of nitrogen, phosphorus, potassium, magnesium quaternary composite fertilizer.
2, because the mode that the present invention only adopts acidleach, ammoniacal liquor neutralization, evaporative crystallization and adds phosphorus containg substances prepares composite fertilizer, therefore, not only method is simple, and is easy to operate, and shortened technical process greatly, reduced production cost effectively.
Embodiment
Below each embodiment all to adopt the blotite fine ore be raw material, the chemical group prejudice table 1 that it is main.
The main chemical constitution of table 1 blotite raw material
Al 2O 3 CaO Fe 2O 3 K 2O MgO Na 2O SiO 2
Figure 2012102984561100002DEST_PATH_IMAGE001
15.81 		1.30 9.22 9.69 22.54 4.04 32.82
Embodiment 1A kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer may further comprise the steps:
⑴ acidleach: taking by weighing the 10.00g granularity and be 20 purpose blotite breezes to the 250ml wide-necked bottle, is under the non-pressurized condition at pressure, and adopting alr mode slowly to add the 10.00g mass percentage concentration is 80% sulphuric acid soln; Capped; Laying temperature is that time of immersion is 1 hour in 140 ℃ the baking oven, takes out then; Be cooled to room temperature, obtain solid substance; Add 2 times secondary water dilution of its quality in the solid substance, separate, obtain filter residue and filtrating A respectively through filtering.
⑵ ammoniacal liquor neutralization: the A that will filtrate changes in the 400ml beaker; Under whipped state, slowly add the ammoniacal liquor neutralization, through filtering the liquor B of the mixed precipitation that obtains Marinco H, ironic hydroxide, ferrous hydroxide, white lake respectively and sulfur acid potassium, ammonium sulfate, ammonium sulfate magnesium.
⑶ evaporative crystallization: liquor B placed carry out evaporative crystallization on 150 ℃ the hot plate and obtain crystallized product, the composition of crystallized product is seen table 2.
Table 2 crystallized product chemical constitution (%)
Al 2(SO 4) 3 FeSO 4 K 2SO 4 Mg(NH 4) 2(SO 4) 2 (NH 4) 2SO 4 Na 2SO 4 H 2O
0.03 0.01 10.93 27.41 51.79 4.23 5.24
In crystallized product, add phosphorus containg substances (in Vanadium Pentoxide in FLAKES, mass percentage concentration is 30%) then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process, wherein the mass ratio of crystallized product and phosphorus containg substances (g/g) is 1:0.1.N+P in the composite fertilizer 2O 5+ K 2The massfraction of O is for being not less than 25%, and N, P 2O 5, K 2The single main part mass percentage content of O meets national GB15063-2009 " composite fertilizer (compound manure) " current national standard all greater than 4%.
Embodiment 2A kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer may further comprise the steps:
⑴ acidleach: taking by weighing the 10.00g granularity and be 20 purpose blotite breezes to the 250ml wide-necked bottle, is under the non-pressurized condition at pressure, and adopting alr mode slowly to add the 30.00g mass percentage concentration is 60% sulphuric acid soln; Capped; Laying temperature is that time of immersion is 4 hours in 90 ℃ the baking oven, takes out then; Be cooled to room temperature, obtain solid substance; Add 20 times secondary water dilution of its quality in the solid substance, separate, obtain filter residue and filtrating A respectively through filtering.
⑵ ammoniacal liquor neutralization: the A that will filtrate changes in the 400ml beaker; Under whipped state, slowly add the ammoniacal liquor neutralization, through filtering the liquor B of the mixed precipitation that obtains Marinco H, ironic hydroxide, ferrous hydroxide, white lake respectively and sulfur acid potassium, ammonium sulfate, ammonium sulfate magnesium.
⑶ evaporative crystallization: liquor B placed carry out evaporative crystallization on 150 ℃ the hot plate and obtain crystallized product, the composition of crystallized product is seen table 3.
Table 3 crystallized product chemical constitution (%)
Al 2(SO 4) 3 FeSO 4 K 2SO 4 Mg(NH 4) 2(SO 4) 2 (NH 4) 2SO 4 Na 2SO 4 H 2O
0.01 0.02 11.24 28.13 52.23 3.11 5.12
In crystallized product, add phosphorus containg substances (in Vanadium Pentoxide in FLAKES, mass percentage concentration is 30%) then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process, wherein the mass ratio of crystallized product and phosphorus containg substances (g/g) is 1:5.N+P in the composite fertilizer 2O 5+ K 2The massfraction of O is for being not less than 25%, and N, P 2O 5, K 2The single main part mass percentage content of O meets national GB15063-2009 " composite fertilizer (compound manure) " current national standard all greater than 4%.
Embodiment 3A kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer may further comprise the steps:
⑴ acidleach: taking by weighing the 10.00g granularity and be 200 purpose blotite breezes to the 250ml wide-necked bottle, is under the non-pressurized condition at pressure, and adopting alr mode slowly to add the 50.00g mass percentage concentration is 20% sulphuric acid soln; Capped; Laying temperature is that time of immersion is 10 hours in 60 ℃ the baking oven, takes out then; Be cooled to room temperature, obtain solid substance; Add 11 times secondary water dilution of its quality in the solid substance, separate, obtain filter residue and filtrating A respectively through filtering.
⑵ ammoniacal liquor neutralization: the A that will filtrate changes in the 400ml beaker; Under whipped state, slowly add the ammoniacal liquor neutralization, through filtering the liquor B of the mixed precipitation that obtains Marinco H, ironic hydroxide, ferrous hydroxide, white lake respectively and sulfur acid potassium, ammonium sulfate, ammonium sulfate magnesium.
⑶ evaporative crystallization: liquor B placed carry out evaporative crystallization on 150 ℃ the hot plate and obtain crystallized product, the composition of crystallized product is seen table 4.
Table 4 crystallized product chemical constitution (%)
Al 2(SO 4) 3 FeSO 4 K 2SO 4 Mg(NH 4) 2(SO 4) 2 (NH 4) 2SO 4 Na 2SO 4 H 2O
0.03 0.02 11.02 27.67 51.63 4.54 4.78
In crystallized product, add phosphorus containg substances (in Vanadium Pentoxide in FLAKES, mass percentage concentration is 30%) then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process, wherein the mass ratio of crystallized product and phosphorus containg substances (g/g) is 1:0.8.N+P in the composite fertilizer 2O 5+ K 2The massfraction of O is for being not less than 25%, and N, P 2O 5, K 2The single main part mass percentage content of O meets national GB15063-2009 " composite fertilizer (compound manure) " current national standard all greater than 4%.
Embodiment 4A kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer may further comprise the steps:
⑴ acidleach: taking by weighing the 10.00g granularity and be 50 purpose blotite breezes to the 250ml wide-necked bottle, is under the non-pressurized condition at pressure, and adopting alr mode slowly to add the 20.00g mass percentage concentration is 40% sulphuric acid soln; Capped; Laying temperature is that time of immersion is 2 hours in 80 ℃ the baking oven, takes out then; Be cooled to room temperature, obtain solid substance; Add 5 times secondary water dilution of its quality in the solid substance, separate, obtain filter residue and filtrating A respectively through filtering.
⑵ ammoniacal liquor neutralization: the A that will filtrate changes in the 400ml beaker; Under whipped state, slowly add the ammoniacal liquor neutralization, through filtering the liquor B of the mixed precipitation that obtains Marinco H, ironic hydroxide, ferrous hydroxide, white lake respectively and sulfur acid potassium, ammonium sulfate, ammonium sulfate magnesium.
⑶ evaporative crystallization: liquor B placed carry out evaporative crystallization on 130 ℃ the hot plate and obtain crystallized product, the composition of crystallized product is seen table 5.
Table 5 crystallized product chemical constitution (%)
Al 2(SO 4) 3 FeSO 4 K 2SO 4 Mg(NH 4) 2(SO 4) 2 (NH 4) 2SO 4 Na 2SO 4 H 2O
0.03 0.01 10.33 27.41 52.79 4.12 5.02
In crystallized product, add phosphorus containg substances (in Vanadium Pentoxide in FLAKES, mass percentage concentration is 50%) then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process, wherein the mass ratio of crystallized product and phosphorus containg substances (g/g) is 1:1.N+P in the composite fertilizer 2O 5+ K 2The massfraction of O is for being not less than 25%, and N, P 2O 5, K 2The single main part mass percentage content of O meets national GB15063-2009 " composite fertilizer (compound manure) " current national standard all greater than 4%.
Embodiment 5A kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer may further comprise the steps:
⑴ acidleach: taking by weighing the 10.00g granularity and be 100 purpose blotite breezes to the 250ml wide-necked bottle, is under the non-pressurized condition at pressure, and adopting alr mode slowly to add the 40.00g mass percentage concentration is 70% sulphuric acid soln; Capped; Laying temperature is that time of immersion is 8 hours in 120 ℃ the baking oven, takes out then; Be cooled to room temperature, obtain solid substance; Add 15 times secondary water dilution of its quality in the solid substance, separate, obtain filter residue and filtrating A respectively through filtering.
⑵ ammoniacal liquor neutralization: the A that will filtrate changes in the 400ml beaker; Under whipped state, slowly add the ammoniacal liquor neutralization, through filtering the liquor B of the mixed precipitation that obtains Marinco H, ironic hydroxide, ferrous hydroxide, white lake respectively and sulfur acid potassium, ammonium sulfate, ammonium sulfate magnesium.
⑶ evaporative crystallization: liquor B placed carry out evaporative crystallization on 170 ℃ the hot plate and obtain crystallized product, the composition of crystallized product is seen table 6.
Table 6 crystallized product chemical constitution (%)
Al 2(SO 4) 3 FeSO 4 K 2SO 4 Mg(NH 4) 2(SO 4) 2 (NH 4) 2SO 4 Na 2SO 4 H 2O
0.02 0.02 11.36 27.72 52.11 3.28 5.43
In crystallized product, add phosphorus containg substances (in Vanadium Pentoxide in FLAKES, mass percentage concentration is 80%) then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process, wherein the mass ratio of crystallized product and phosphorus containg substances (g/g) is 1:2.N+P in the composite fertilizer 2O 5+ K 2The massfraction of O is for being not less than 25%, and N, P 2O 5, K 2The single main part mass percentage content of O meets national GB15063-2009 " composite fertilizer (compound manure) " current national standard all greater than 4%.
Embodiment 6A kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer may further comprise the steps:
⑴ acidleach: taking by weighing the 10.00g granularity and be 150 purpose blotite breezes to the 250ml wide-necked bottle, is under the non-pressurized condition at pressure, and adopting alr mode slowly to add the 35.00g mass percentage concentration is 65% sulphuric acid soln; Capped; Laying temperature is that time of immersion is 6 hours in 110 ℃ the baking oven, takes out then; Be cooled to room temperature, obtain solid substance; Add 18 times secondary water dilution of its quality in the said solid substance, separate, obtain filter residue and filtrating A respectively through filtering.
⑵ ammoniacal liquor neutralization: the A that will filtrate changes in the 400ml beaker; Under whipped state, slowly add the ammoniacal liquor neutralization, through filtering the liquor B of the mixed precipitation that obtains Marinco H, ironic hydroxide, ferrous hydroxide, white lake respectively and sulfur acid potassium, ammonium sulfate, ammonium sulfate magnesium.
⑶ evaporative crystallization: liquor B placed carry out evaporative crystallization on 165 ℃ the hot plate and obtain crystallized product, the composition of crystallized product is seen table 7.
Table 7 crystallized product chemical constitution (%)
Al 2(SO 4) 3 FeSO 4 K 2SO 4 Mg(NH 4) 2(SO 4) 2 (NH 4) 2SO 4 Na 2SO 4 H 2O
0.03 0.02 11.21 27.55 51.68 4.31 5.11
In crystallized product, add phosphorus containg substances (in Vanadium Pentoxide in FLAKES, mass percentage concentration is 100%) then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process, wherein the mass ratio of crystallized product and phosphorus containg substances (g/g) is 1:3.5.N+P in the composite fertilizer 2O 5+ K 2The massfraction of O is for being not less than 25%, and N, P 2O 5, K 2The single main part mass percentage content of O meets national GB15063-2009 " composite fertilizer (compound manure) " current national standard all greater than 4%.

Claims (4)

1. method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer may further comprise the steps:
⑴ acidleach: with granularity is that 20 ~ 200 purpose blotite breezes are added in the sulfuric acid immersion liquid, is that 60 ~ 140 ℃, pressure are to carry out acidleach under the non-pressurized condition in temperature of reaction, and time of immersion is 1 ~ 10 hour, takes out then, is cooled to room temperature, obtains solid substance; Add 2 ~ 20 times secondary water dilution of its quality in the said solid substance, separate through filtering then, obtain filter residue and filtrating A respectively; The mass ratio of said blotite breeze and said sulfuric acid immersion liquid is 1:1 ~ 1:5;
⑵ ammoniacal liquor neutralization: said filtrating A is added ammoniacal liquor neutralize under whipped state, the warp filtration obtains mixed precipitation and sulfur acid potassium, the ammonium sulfate of Marinco H, ironic hydroxide, ferrous hydroxide, white lake, the liquor B of ammonium sulfate magnesium respectively;
⑶ evaporative crystallization: said liquor B is carried out evaporative crystallization obtain crystallized product, in said crystallized product, add phosphorus containg substances then, process the multi-component composite fertilizer of nitrogenous phosphorus potassium magnesium by common process; The mass ratio of said crystallized product and said phosphorus containg substances is 1:0.1 ~ 1:5.
2. a kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer as claimed in claim 1 is characterized in that: the sulfuric acid immersion liquid among the said step ⑴ is meant that containing mass percent concentration is 20% ~ 80% vitriolic solution.
3. a kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer as claimed in claim 1 is characterized in that: the vaporization temperature among the said step ⑶ is 130 ~ 170 ℃.
4. a kind of method of utilizing blotite to prepare nitrogen-phosphorus-potassium compound fertilizer as claimed in claim 1 is characterized in that: the phosphorus in the phosphorus containg substances among the said step ⑶ is by Vanadium Pentoxide in FLAKES, and the quality percentage composition of Vanadium Pentoxide in FLAKES is not less than 30%.
CN2012102984561A 2012-08-21 2012-08-21 Method for preparing nitrogen-phosphorus-potassium compound fertilizer from biotite Pending CN102775219A (en)

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Cited By (6)

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Publication number Priority date Publication date Assignee Title
CN105000580A (en) * 2014-04-17 2015-10-28 淡水河谷公司 Boussingaul tite production process from liquid effluents containing magnesium sulphate
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
CN106146104A (en) * 2016-08-23 2016-11-23 邯郸市同达矿用电器有限公司 Hopcalite agent waste liquid prepares the method for chemical fertilizer
CN106631284A (en) * 2017-01-04 2017-05-10 山西农业大学 Preparation method of citrate-soluble potassium inorganic compound fertilizer
CN112758937A (en) * 2021-01-14 2021-05-07 襄阳泽东化工集团有限公司 Method for preparing potassium fluosilicate and NPK compound fertilizer from phosphorus-potassium associated ore
CN113024285A (en) * 2021-03-01 2021-06-25 贵州大学 Method for recovering potassium and aluminum from brown corundum dust

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CN101921141A (en) * 2010-08-31 2010-12-22 王月明 Method for preparing mineral potassic fertilizer from potassium-enriched rock
CN101948115A (en) * 2010-09-14 2011-01-19 薛彦辉 Method for processing potassium-containing rocks
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

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Publication number Priority date Publication date Assignee Title
CN105000580A (en) * 2014-04-17 2015-10-28 淡水河谷公司 Boussingaul tite production process from liquid effluents containing magnesium sulphate
CN105000580B (en) * 2014-04-17 2018-06-26 淡水河谷公司 From the boussingaultite production method of the liquid efflunent containing magnesium sulfate
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
CN106146104A (en) * 2016-08-23 2016-11-23 邯郸市同达矿用电器有限公司 Hopcalite agent waste liquid prepares the method for chemical fertilizer
CN106631284A (en) * 2017-01-04 2017-05-10 山西农业大学 Preparation method of citrate-soluble potassium inorganic compound fertilizer
CN112758937A (en) * 2021-01-14 2021-05-07 襄阳泽东化工集团有限公司 Method for preparing potassium fluosilicate and NPK compound fertilizer from phosphorus-potassium associated ore
CN112758937B (en) * 2021-01-14 2023-08-01 襄阳泽东化工集团有限公司 Method for preparing potassium fluosilicate and NPK compound fertilizer from associated phosphate-potassium ore
CN113024285A (en) * 2021-03-01 2021-06-25 贵州大学 Method for recovering potassium and aluminum from brown corundum dust

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Application publication date: 20121114