AU2021100548A4 - Organic nutrient-based accelerator for dissolution of potassium sulfate and preparation and use thereof - Google Patents
Organic nutrient-based accelerator for dissolution of potassium sulfate and preparation and use thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/40—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for affecting fertiliser dosage or release rate; for affecting solubility
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
- C05D1/005—Fertilisers containing potassium post-treatment
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F11/00—Other organic fertilisers
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Abstract
The present disclosure relates to an organic nutrient-based accelerator for dissolution of potassium
sulfate and a preparation method and use thereof. The organic nutrient-based accelerator for
dissolution of potassium sulfate of the present disclosure includes organic acid mixed solution,
tyrosine, leucine, threonine, alcohol amine and the like. The organic nutrient-based accelerator for
dissolution of potassium sulfate of the present disclosure can greatly increase dissolution speed of
potassium sulfate by 6-120 times. Moreover, the accelerator of the present disclosure can provide
organic nutrients for crops and show a synergistic effect with inorganic nutrients to further improve
nutritional efficiency of potassium and sulfur.
Description
AUSTRALIA Patents Act 1990
This invention is described in the following statement:-
[0001] The present disclosure belongs to the technical field of fertilizer production. Specifically, the present disclosure relates to an organic nutrient-based accelerator for dissolution of potassium sulfate, a method for preparing an organic nutrient-based accelerator for dissolution of potassium sulfate, and use of the organic nutrient-based accelerator for dissolution of potassium sulfate.
[0002] Potassium sulfate is a salt composed of sulfate ions and potassium ions. It is usually in form of colorless or white crystal, granule or powder. The potassium sulfate is an important potash fertilizer in China, and also an important raw material for the production of compound fertilizers and water-soluble fertilizers. It has the following advantages: 1. The potassium sulfate is especially suitable for chlorine-sensitive crops such as tobacco, citrus, grape and potato. 2. In China, sulfur deficient soil accounts for 40% of the total cultivated soil in area, where potassium sulfate is required. 3. The potassium sulfate is a physiologically acidic fertilizer which can improve saline-alkali soil and provide a desired environment for growth of crop roots.
[0003] Although the potassium sulfate is a salt formed with a strong acid and a strong alkali, its dissolution in water is very slow. A sulfate may easily react with calcium ion to form a precipitate, which seriously affects fertilizer efficiency and causes the inconvenience in fertilizer application, especially in water-soluble fertilizer application. In order to accelerate dissolution of potassium sulfate, oscillation (24 h) and heating methods are often adopted. This not only increases time, labor and energy cost during fertilizer application, but also brings out difficulty when applied in a large area. Some organic substances, such as the treated organic acid, wood vinegar/bamboo vinegar and amino acid, can be absorbed as organic nutrients by crops to promote crop growth, and improve nutrients absorption, transportation and utilization by or in crops. Such organic substances can also be used to adjust pH or chelate secondary and trace elements to promote dissolution of potassium sulfate, so that the organic nutrients work synergistically with potassium and sulfur nutrients.
[0004] CN103771910A discloses a method for producing instant potassium sulfate, including the following steps: step (1): preparing a spray auxiliary by preparing an aqueous solution with inorganic acid, acid anhydride or acidic inorganic salt; step (2): spraying the prepared auxiliary on a surface of potassium sulfate; step (3): spraying an aqueous solution of surfactant on a surface of potassium sulfate which has been sprayed with the auxiliary; step (4): drying a wet potassium sulfate which has been sprayed with the auxiliary and the aqueous solution of surfactant; step (5): crushing a potassium sulfate product and packaging to obtain a finished product. The processing technology is simple, and only spraying a small amount of auxiliary is supplemented in the original potassium sulfate production process to change surface properties of the potassium sulfate to obtain a quick-dissolving potassium sulfate product. An obtained product no longer has the defect that the potassium sulfate may absorb moisture and agglomerate during storage. The obtained product can be quickly dispersed and dissolved in water, which also solves the problem of drip hole clogging during punching fertilization.
[Technical Problem To Be Solved]
[0005] An objective of the present disclosure is to provide an organic nutrient-based accelerator for dissolution of potassium sulfate.
[0006] Another objective of the present disclosure is to provide a method for preparing the organic nutrient-based accelerator for dissolution of potassium sulfate.
[0007] Yet another objective of the present disclosure is to provide use of the organic nutrient based accelerator for dissolution of potassium sulfate.
[Technical Solution]
[0008] The objectives of the present disclosure are achieved by the following technical solutions.
[0009] The present disclosure relates to an organic nutrient-based accelerator for dissolution of potassium sulfate.
[0010] The organic nutrient-based accelerator for dissolution of potassium sulfate includes the following components in parts by weight: tyrosine 1-5 parts, leucine 1-5 parts, threonine 1-5 parts, glycerol 2-5 parts, alcohol amine 5-20 parts, water 20-70 parts, organic acid mixed solution 20-40 parts.
[0011] According to another preferred embodiment of the present disclosure, the organic nutrient based accelerator for dissolution of potassium sulfate may include the following components in parts by weight:
tyrosine 18-4.2 parts,
leucine 1.8-4.2 parts,
threonine 1.8-4.2 parts,
glycerol 2.5-4.5 parts,
alcohol amine 8-16 parts,
water 35-55 parts,
organic acid mixed solution 26-34 parts.
[0012] According to another preferred embodiment of the present disclosure, the alcohol amine may be one or more selected from monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) and N-methyldiethanolamine (MDEA).
[0013] According to another preferred embodiment of the present disclosure, the organic acid mixed solution may include 20 parts by weight of acetic acid, 2-5 parts by weight of salicylic acid, 1 3 parts by weight of ethylene diamine tetraacetic acid (EDTA) and 72-77 parts by weight of wood vinegar or bamboo vinegar.
[0014] According to another preferred embodiment of the present disclosure, the organic acid mixed solution may include 20 parts by weight of acetic acid, 2.8-4.2 parts by weight of salicylic acid, 1.6-2.4 parts by weight of EDTA and 74-75 parts by weight of wood vinegar or bamboo vinegar.
[0015] The present disclosure also relates to a method for preparing the organic nutrient-based accelerator for dissolution of potassium sulfate. The preparation method includes the following steps:
step A. preparation of organic acid mixed solution
adding 20 parts by weight of acetic acid, 2-5 parts by weight of salicylic acid and 1-3 parts by weight of EDTA to 72-77 parts by weight of wood vinegar or bamboo vinegar, mixing uniformly, heating to 50-80°C, stirring at this temperature until these organic acids are completely dissolved, and cooling to obtain the organic acid mixed solution;
step B. preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
adding 20-40 parts by weight of the organic acid mixed solution obtained in step A, 1-5 parts by weight of tyrosine, 1-5 parts by weight of leucine, 1-5 parts by weight of threonine and 2-5 parts by weight of glycerol to 20-70 parts by weight of water, stirring to achieve dissolution, adding 5-20 parts by weight of alcohol amine, stirring to achieve dissolution, and cooling to obtain the organic nutrient-based accelerator for dissolution of potassium sulfate.
[0016] The present disclosure further relates to use of the organic nutrient-based accelerator for dissolution of potassium sulfate, or an organic nutrient-based accelerator for dissolution of potassium sulfate prepared by the method in dissolving potassium sulfate in water.
[0017] According to another preferred embodiment of the present disclosure, the dissolving potassium sulfate in water includes the following steps: adjusting water temperature to 5-25°C, adding the organic nutrient-based accelerator for dissolution of potassium sulfate or an organic nutrient-based accelerator for dissolution of potassium sulfate prepared by the method to the water, adding potassium sulfate where a weight ratio of the potassium sulfate to the water is (0.5-1.2):10.0 and a weight ratio of the organic nutrient-based accelerator for dissolution of potassium sulfate to the potassium sulfate is (0.05-1.0):1, stirring and mixing uniformly to dissolve the potassium sulfate completely in the water within 0.5-10.0 min.
[0018] According to another preferred embodiment of the present disclosure, the potassium sulfate has a particle size of 60-150 mesh.
[0019] According to another preferred embodiment of the present disclosure, the stirring is carried out at 80-200 rpm.
[0020] The present disclosure is described in further detail below.
[0021] The present disclosure relates to an organic nutrient-based accelerator for dissolution of potassium sulfate.
[0022] The organic nutrient-based accelerator for dissolution of potassium sulfate includes the following components in parts by weight:
tyrosine 1-5 parts,
leucine 1-5 parts,
threonine 1-5 parts,
glycerol 2-5 parts,
alcohol amine 5-20 parts,
water 20-70 parts,
organic acid mixed solution 20-40 parts.
[0023] The tyrosine in the accelerator for dissolution of potassium sulfate of the present disclosure mainly provides an organic nutrient, and chelates calcium and other metal ions in water to reduce precipitation. The tyrosine used in the present disclosure is a product commercially available in the current market, for example, a product sold under the trade name L-tyrosine by Jiangsu Baiyao Biotechnology Company.
[0024] The leucine in the accelerator for dissolution of potassium sulfate of the present disclosure mainly provides an organic nutrient and chelates metal ions. The leucine used in the present disclosure is a product commercially available in the current market, for example, a product sold under the trade name L-leucine by Wuhan Yuancheng Co-Creation Technology Co., Ltd.
[0025] The threonine in the accelerator for dissolution of potassium sulfate of the present disclosure mainly provides an organic nutrient and chelates metal ions. The threonine used in the present disclosure is a product commercially available in the current market, for example, a product sold under the trade name L-threonine by Xi'an Dafengshou Biotechnology Co., Ltd.
[0026] The glycerol in the accelerator for dissolution of potassium sulfate of the present disclosure mainly enhances the stability of potassium sulfate solution. The glycerol used in the present disclosure is a product commercially available in the current market, for example, a product sold under the trade name of industrial glycerol by Ji'nan Nanhua Jidi Environmental Protection Technology Co., Ltd.
[0027] The alcohol amine in the accelerator for dissolution of potassium sulfate of the present disclosure is mainly used to adjust pH of the accelerator of dissolution of potassium sulfate of the present disclosure, chelate microelements, and enhance solution resistance to low temperature. According to the present disclosure, the alcohol amine is one or more selected from MEA, DEA, TEA or MDEA. The alcohol amine used in the present disclosure may be a commercially available product, for example, a product sold by Shanghai Minchen Chemical Co., Ltd. under the trade name MEA, or a product sold by Zouping County Guoan Chemical Co., Ltd. under the trade name MDEA.
[0028] The organic acid mixed solution in the accelerator for dissolution of potassium sulfate of the present disclosure is mainly used to accelerate dissolution of potassium sulfate. It includes 20 parts by weight of acetic acid, 2-5 parts by weight of salicylic acid, 1-3 parts by weight of EDTA and 72-77 parts by weight of wood vinegar or bamboo vinegar. The wood vinegar used in the present disclosure is a product commercially available in the current market, for example, a product sold under the trade name wood vinegar by Dongying Runyi Biological Technology Co., Ltd. The bamboo vinegar used in the present disclosure is a product commercially available in the current market, for example, a product sold by Zhengzhou Yinong Biological Technology Co., Ltd. under the trade name bamboo vinegar. The rest components are also products in the current market.
[0029] Preferably, the organic acid mixed solution may include 20 parts by weight of acetic acid, 2.8-4.2 parts by weight of salicylic acid, 1.6-2.4 parts by weight of EDTA and 74-75 parts by weight of wood vinegar or bamboo vinegar. In the present disclosure, when other components have contents within the stated ranges and the tyrosine has a content of less than 1 part by weight, effects of providing an organic nutrient and chelating metal ions are limited. If the tyrosine has a content of more than 5 parts by weight, there will be additional unnecessary cost and the tyrosine may be precipitated. Therefore, it is reasonable that the tyrosine has a content of 1-5 parts by weight.
[0030] Similarly, when other components have contents within the stated ranges and the leucine has a content of less than 1 part by weight, the effect of providing an organic nutrient is not obvious. If the leucine has a content of more than 5 parts by weight, the leucine may be precipitated. Therefore, it is appropriate that the leucine has a content of 1-5 parts by weight.
[0031] When other components have contents within the stated ranges and the threonine has a content of less than 1 part by weight, the effect of providing an organic nutrient is not obvious. If the threonine has a content of more than 5 parts by weight, the threonine may be precipitated. Therefore, it is appropriate that the threonine has a content of 1-5 parts by weight.
[0032] When other components have contents within the stated ranges and the glycerol has a content of less than 2 parts by weight, the effect of stabilizing a solution is not obvious. If the glycerol has a content of more than 5 parts by weight, solubility of amino acids will be affected. Therefore, it is feasible that the glycerol has a content of 2-5 parts by weight.
[0033] When other components have contents within the stated ranges and the organic acid mixed solution has a content of less than 20 parts by weight, the effect of accelerating dissolution of potassium sulfate is not ideal. If the organic acid mixed solution has a content of more than 40 parts by weight, further increase of dissolution speed is not significant while cost is increased. Therefore, it is appropriate that the organic acid mixed solution has a content of 20-40 parts by weight.
[0034] When other components have contents within the stated ranges and the alcohol amine has a content of less than 5 parts by weight, the effect of improving liquid buffering performance is limited. If the alcohol amine has a content of more than 20 parts by weight, effect of the dissolution accelerator will be affected due to increase in pH. Therefore, it is appropriate that the alcohol amine has a content of 5-20 parts by weight.
[0035] Preferably, the organic nutrient-based accelerator for dissolution of potassium sulfate may include the following components in parts by weight:
tyrosine 18-4.2 parts,
leucine 1.8-4.2 parts,
threonine 1.8-4.2 parts,
glycerol 2.5-4.5 parts,
alcohol amine 8-16 parts,
water 35-55 parts,
organic acid mixed solution 26-34 parts.
[0036] The present disclosure also relates to a method for preparing the organic nutrient-based accelerator for dissolution of potassium sulfate. The preparation method includes the following steps:
step A. preparation of organic acid mixed solution
adding 20 parts by weight of acetic acid, 2-5 parts by weight of salicylic acid and 1-3 parts by weight of EDTA to 72-77 parts by weight of wood vinegar or bamboo vinegar, mixing uniformly, heating to 50-80°C, stirring at this temperature until these organic acids are completely dissolved, and cooling to obtain the organic acid mixed solution; step B. preparation of organic nutrient-based accelerator for dissolution of potassium sulfate adding 20-40 parts by weight of the organic acid mixed solution obtained in step A, 1-5 parts by weight of tyrosine, 1-5 parts by weight of leucine, 1-5 parts by weight of threonine and 2-5 parts by weight of glycerol to 20-70 parts by weight of water, stirring to achieve dissolution, adding 5-20 parts by weight of alcohol amine, stirring to achieve dissolution, and cooling to obtain the organic nutrient-based accelerator for dissolution of potassium sulfate.
[0037] The raw materials for preparation of the organic acid mixed solution and the organic nutrient-based accelerator for dissolution of potassium sulfate have been described above, and are not repeated herein.
[0038] The present disclosure further relates to use of the organic nutrient-based accelerator for dissolution of potassium sulfate or an organic nutrient-based accelerator for dissolution of potassium sulfate prepared by the method in dissolving potassium sulfate in water.
[0039] In the present disclosure, the dissolving potassium sulfate in water includes the following steps:
adjusting water to a temperature of 5-25°C, adding the organic nutrient-based accelerator for dissolution of potassium sulfate or an organic nutrient-based accelerator for dissolution of potassium sulfate prepared by the method to the water, adding potassium sulfate to keep a weight ratio of the potassium sulfate to the water with (0.5-1.2):10.0 and a weight ratio of the organic nutrient-based accelerator for dissolution of potassium sulfate to the potassium sulfate with (0.05-1.0):1, stirring and mixing uniformly to dissolve the potassium sulfate completely in the water within 0.5-10.0 min.
[0040] In the present disclosure, the adjusting water temperature to 5-25°C is mainly to keep in consistence with the temperature in actual application.
[0041] A weight ratio of the potassium sulfate to the water is controlled at (0.5-1.2):10.0. This is because potassium sulfate is applied as a water-soluble fertilizer where it is dissolved to form a solution having a relatively high concentration before entering an irrigation system as water-soluble fertilizer. When the ratio is lower than 0.5:10, the concentration of potassium sulfate is too low for irrigation, while when it exceeds 1.2:10, the potassium sulfate reaches saturation solubility and precipitation occurs.
[0042] A weight ratio of the organic nutrient-based accelerator for dissolution of potassium sulfate to the potassium sulfate is kept with (0.05-1.0):1. This is because when the ratio is lower than 0.05:1, the dissolution speed is relatively slow, while when it is higher than 1:1, application of potassium sulfate as a main fertilizer will be affected.
[0043] Preferably, the potassium sulfate may have a particle size of 60-150 mesh. The stirring may be carried out at 80-200
[Beneficial Effects]
[0044] The present disclosure has the following beneficial effects: the organic nutrient-based accelerator for dissolution of potassium sulfate can be widely used in production of potassium sulfate based compound fertilizers, organic-inorganic compound fertilizers, water-soluble fertilizers, and conventional potassium sulfate-based fertilizers. The organic nutrient-based accelerator for dissolution of potassium sulfate of the present disclosure can greatly increase dissolution speed of potassium sulfate by 6-120 times compared with an existing method of dissolving potassium sulfate. Moreover, the accelerator of the present disclosure can provide organic nutrients for crops and show a synergistic effect with inorganic nutrients to further improve nutritional efficiency of potassium and sulfur.
[0045] The present disclosure will be better understood with reference to the embodiments below.
I. Preparation Examples
Example 1: preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
This example included steps as follows:
Step A. preparation of organic acid mixed solution
20 parts by weight of acetic acid, 2.8 parts by weight of salicylic acid and 1 part by weight of EDTA were added to 72 parts by weight of a product sold under the trade name wood vinegar by
Dongying Runyi Biological Technology Co., Ltd., mixed uniformly, heated to 70°C, stirred at this temperature until these organic acids were completely dissolved, and cooled to obtain the organic acid mixed solution.
Step B. preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
20 parts by weight of the organic acid mixed solution obtained in step A, 1.8 parts by weight of tyrosine, 1 part by weight of leucine, 1 part by weight of threonine and 4.5 parts by weight of glycerol were added to 35 parts by weight of water, stirred to achieve dissolution, added with 20 parts by weight of MDEA, stirred to achieve dissolution, and cooled to obtain the organic nutrient-based accelerator for dissolution of potassium sulfate.
Example 2: preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
This example included steps as follows:
Step A. preparation of organic acid mixed solution
20 parts by weight of acetic acid, 4.2 parts by weight of salicylic acid and 3 parts by weight of EDTA were added to 74 parts by weight of a product sold by Zhengzhou Yinong Biological Technology Co., Ltd. under the trade name bamboo vinegar, mixed uniformly, heated to 50°C, stirred at this temperature until these organic acids were completely dissolved, and cooled to obtain the organic acid mixed solution.
Step B. preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
26 parts by weight of the organic acid mixed solution obtained in step A, 4.2 parts by weight of tyrosine, 5 parts by weight of leucine, 1.8 parts by weight of threonine and 2 parts by weight of glycerol were added to 55 parts by weight of water, stirred to achieve dissolution, added with 5 parts by weight of MEA, stirred to achieve dissolution, and cooled to obtain the organic nutrient-based accelerator for dissolution of potassium sulfate.
Example 3: preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
This example included steps as follows:
Step A. preparation of organic acid mixed solution
20 parts by weight of acetic acid, 2 parts by weight of salicylic acid and 1.6 parts by weight of EDTA were added to 75 parts by weight of a product sold under the trade name wood vinegar by Ji'nan Kunhong Biological Company, mixed uniformly, heated to 60°C, stirred at this temperature until these organic acids were completely dissolved, and cooled to obtain the organic acid mixed solution.
Step B. preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
34 parts by weight of the organic acid mixed solution obtained in step A, 1 part by weight of tyrosine, 1.8 parts by weight of leucine, 4.2 parts by weight of threonine and 2.5 parts by weight of glycerol were added to 20 parts by weight of water, stirred to achieve dissolution, added with 8 parts by weight of TEA, stirred to achieve dissolution, and cooled to obtain the organic nutrient-based accelerator for dissolution of potassium sulfate.
Example 4: preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
This example included steps as follows:
Step A. preparation of organic acid mixed solution
20 parts by weight of acetic acid, 5 parts by weight of salicylic acid and 2.4 parts by weight of EDTA were added to 77 parts by weight of a product sold under the trade name bamboo vinegar by Yifeng County Fangsheng Bamboo Industry Co., Ltd., mixed uniformly, heated to 80°C, stirred at this temperature until these organic acids were completely dissolved, and cooled to obtain the organic acid mixed solution.
Step B. preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
40 parts by weight of the organic acid mixed solution obtained in step A, 5 parts by weight of tyrosine, 4.2 parts by weight of leucine, 5 parts by weight of threonine and 5 parts by weight of glycerol were added to 70 parts by weight of water, stirred to achieve dissolution, added with 16 parts by weight of TEA, stirred to achieve dissolution, and cooled to obtain the organic nutrient-based accelerator for dissolution of potassium sulfate.
II. Test Examples
Test Example 1: performance of the accelerator for dissolution of potassium sulfate of the present disclosure
[0046] The accelerators for dissolution of potassium sulfate prepared in Example 2 and Example 3 were used and labelled with dissolution accelerator A and dissolution accelerator B respectively. A control without dissolution of potassium sulfate accelerator was labelled with CK.
[0047] The water temperature was adjusted to 25°C. Then the organic nutrient-based accelerator for dissolution of potassium sulfate was added to the water. Potassium sulfate with a particle size of 100 mesh was added, stirred at 80 rpm and mixed uniformly. The time for complete dissolution of the potassium sulfate was recorded. In this example, a weight ratio of the potassium sulfate to the water was 0.8: 10.0, and a weight ratio of the accelerator for dissolution of potassium sulfate to the potassium sulfate was 0.5:1.
[0048] Test results were shown in Table 1.
Table 1: effect of accelerator for dissolution of potassium sulfate
Time for dissolution, min Treatment Repetition 1 Repetition 2 Repetition 3 CK 44 38 40 Dissolution accelerator A 0.8 0.6 0.5 Dissolution accelerator B 1.3 1.2 1.0
[0049] The test results in Table 1 showed that, the accelerators for dissolution of potassium sulfate of the present disclosure significantly promoted dissolution of the potassium sulfate. Compared with that of CK, the dissolution speeds with dissolution accelerators A and B were increased by 64 times and 35 times, respectively.
Test Example 2: performance of accelerator for dissolution of potassium sulfate of the present disclosure
[0050] The accelerators for dissolution of potassium sulfate prepared in Example 1 and Example 4 were used and labelled with dissolution accelerator C dissolution accelerator D respectively. A control without dissolution of potassium sulfate accelerator was labelled with CK.
[0051] The water temperature was adjusted to 5°C. Then the organic nutrient-based accelerator for dissolution of potassium sulfate was added to the water. Potassium sulfate with a particle size of mesh was added, stirred at 100 rpm and mixed uniformly. The time for complete dissolution of the potassium sulfate was recorded. In this example, a weight ratio of the potassium sulfate to the water was 1.2:10.0, and a weight ratio of the accelerator for dissolution of potassium sulfate to the potassium sulfate was 1.0:1.
[0052] Test results were shown in Table 2.
Table 2: effect of accelerator for dissolution of potassium sulfate
Time for dissolution, min Treatment Repetition 1 Repetition 2 Repetition 3 CK 57 50 54
Dissolution accelerator C 1.3 1.1 1.1
Dissolution accelerator D 1.0 0.9 1.0
[0053] The test results in Table 2 showed that, the accelerators for dissolution of potassium sulfate of the present disclosure significantly promoted dissolution of the potassium sulfate. Compared with that of CK, the dissolution speeds with dissolution accelerators C and D were increased by 46 times and 55 times respectively.
Test Example 3: performance of accelerator for dissolution of potassium sulfate of the present disclosure
[0054] The accelerators for dissolution of potassium sulfate prepared in Example 1 and Example 3 were used and labelled with dissolution accelerator C dissolution accelerator A respectively. A control without dissolution of potassium sulfate accelerator was labelled with CK.
[0055] The water temperature was adjusted to 12°C. Then the organic nutrient-based accelerator for dissolution of potassium sulfate was added to the water. Potassium sulfate with a particle size of 150 mesh was added, stirred at 200 rpm and mixed uniformly. The time for complete dissolution of the potassium sulfate was recorded. In this example, a weight ratio of the potassium sulfate to the water was 0.5:10.0, and a weight ratio of the accelerator for dissolution of potassium sulfate to the potassium sulfate was 0.05:1.
[0056] Test results were shown in Table 3.
Table 3: effect of accelerator for dissolution of potassium sulfate
Time for dissolution, min Treatment Repetition Repetition Repetition 1 2 3 CK 40 36 39 Dissolution accelerator C 0.6 0.5 0.6 Dissolution accelerator A 0.6 0.5 0.5
[0057] The test results in Table 3 showed that, the accelerators for dissolution of potassium sulfate of the present disclosure significantly promoted dissolution of the potassium sulfate. Compared with that of CK, the dissolution speeds with dissolution accelerators A and C were increased by 68 times and 72 times respectively.
[0058] In conclusion, the organic nutrient-based accelerator for dissolution of potassium sulfate of the present disclosure can significantly accelerate the dissolution of potassium sulfate, be widely used in production of potassium sulfate-based compound fertilizers, organic-inorganic compound fertilizers, and water-soluble fertilizers. It can also be used in application of conventional potassium sulfate-based fertilizers.
Claims (5)
1. An organic nutrient-based accelerator for dissolution of potassium sulfate, comprising the following components in parts by weight:
tyrosine 1-5 parts,
leucine 1-5 parts,
threonine 1-5 parts,
glycerol 2-5 parts,
alcohol amine 5-20 parts,
water 20-70 parts,
organic acid mixed solution 20-40 parts.
2. The organic nutrient-based accelerator for dissolution of potassium sulfate according to Claim 1, comprising the following components in parts by weight:
tyrosine 18-4.2 parts,
leucine 1.8-4.2 parts,
threonine 1.8-4.2 parts,
glycerol 2.5-4.5 parts,
alcohol amine 8-16 parts,
water 35-55 parts,
organic acid mixed solution 26-34 parts.
3. The organic nutrient-based accelerator for dissolution of potassium sulfate according to Claim 1 or Claim 2, wherein the alcohol amine is one or more selected from monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) or N-methyldiethanolamine (MDEA);
the organic acid mixed solution comprises 20 parts by weight of acetic acid, 2-5 parts by weight of salicylic acid, 1-3 parts by weight of ethylene diamine tetraacetic acid (EDTA) and 72-77 parts by weight of wood vinegar or bamboo vinegar;
or the organic acid mixed solution comprises 20 parts by weight of acetic acid, 2.8-4.2 parts by weight of salicylic acid, 1.6-2.4 parts by weight of EDTA and 74-75 parts by weight of wood vinegar or bamboo vinegar.
4. A method for preparing the organic nutrient-based accelerator for dissolution of potassium sulfate according to Claim 1, comprising the following steps:
step A. preparation of organic acid mixed solution
adding 20 parts by weight of acetic acid, 2-5 parts by weight of salicylic acid and 1-3 parts by weight of EDTA to 72-77 parts by weight of wood vinegar or bamboo vinegar, mixing uniformly, heating to 50-80°C, stirring at this temperature until these organic acids are completely dissolved, and cooling to obtain the organic acid mixed solution;
step B. preparation of organic nutrient-based accelerator for dissolution of potassium sulfate
adding 20-40 parts by weight of the organic acid mixed solution obtained in step A, 1-5 parts by weight of tyrosine, 1-5 parts by weight of leucine, 1-5 parts by weight of threonine and 2-5 parts by weight of glycerol to 20-70 parts by weight of water, stirring to achieve dissolution, adding 5-20 parts by weight of alcohol amine, stirring to achieve dissolution, and cooling to obtain the organic nutrient-based accelerator for dissolution of potassium sulfate.
5. Use of the organic nutrient-based accelerator for dissolution of potassium sulfate according to Claim 1 or an organic nutrient-based accelerator for dissolution of potassium sulfate prepared by the method according to claim 4 in dissolving potassium sulfate in water;
the dissolving potassium sulfate in water comprises the following steps: adjusting water to a temperature of 5-25 0 C, adding the organic nutrient-based accelerator for dissolution of potassium sulfate according to claim 1 or an organic nutrient-based accelerator for dissolution of potassium sulfate prepared by the method according to claim 4 to the water, adding potassium sulfate where a weight ratio of the potassium sulfate to the water is (0.5-1.2):10.0 and a weight ratio of the organic nutrient-based accelerator for dissolution of potassium sulfate to the potassium sulfate is (0.05-1.0):1, stirring and mixing uniformly to dissolve the potassium sulfate completely in the water within 0.5-10.0 min wherein the potassium sulfate has a particle size of 60-150 mesh; wherein the stirring is carried out at 80-200 rpm.
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2021
- 2021-01-28 AU AU2021100548A patent/AU2021100548A4/en not_active Ceased
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