Method for preparing multi-component chelate fertilizer by using threonine mother liquor
A technology of threonine mother liquor and threonine mother liquor, which is applied in the field of preparing multi-component chelate fertilizers, can solve the problems of high preparation cost, low utilization rate, and environmental pollution of multi-component chelate fertilizers, and achieve low investment and improved utilization Efficient, easy-to-grasp effects
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Embodiment 1
[0033] The method that utilizes threonine mother liquor of the present embodiment to prepare polychelate fertilizer comprises the following steps:
[0034] 1) Add 50kg of threonine mother liquor, 10kg of water and 5kg of chemically pure anhydrous calcium chloride solid into the reactor respectively, stir and heat to 40°C;
[0035] 2) continue to add respectively 18kg chemically pure anhydrous magnesium sulfate solid, 12kg chemically pure FeSO4.7H2O solid, 2kg chemically pure ZnSO4.7H2O solid and 1kg chemically pure borax in the reactor;
[0036] 3) Add a small amount of solid sodium hydroxide to the reactor, and always control the pH value of the solution in the reactor between 6 and 8;
[0037] 4) Heating up to 80-85°C, stirring and reacting for 2 hours;
[0038] 5) putting the reaction mixture into a cooling pool for crystallization by cooling;
[0039] 6) drying the crystals obtained in step 5) until the moisture content is less than 5%;
[0040] 7) Grinding, weighing an...
Embodiment 2
[0042] The method that utilizes threonine mother liquor of the present embodiment to prepare polychelate fertilizer comprises the following steps:
[0043] 1) Add 60kg of threonine mother liquor, 15kg of water and 8kg of chemically pure anhydrous calcium chloride solid into the reaction kettle respectively, stir and heat to 50°C;
[0044] 2) continue to add respectively 20kg chemically pure anhydrous magnesium sulfate solid, 16kg chemically pure FeSO4.7H2O solid, 5kg chemically pure ZnSO4.7H2O solid and 3kg chemically pure borax in the reactor;
[0045] 3) Add a small amount of solid potassium hydroxide to the reactor, and always control the pH value of the solution in the reactor between 6 and 8;
[0046] 4) Heating up to 80-85°C, stirring and reacting for 2 hours;
[0047] 5) putting the reaction mixture into a cooling pool for crystallization by cooling;
[0048] 6) drying the crystals obtained in step 5) until the moisture content is less than 5%;
[0049] 7) Grinding, ...
Embodiment 3
[0051] The method that utilizes threonine mother liquor of the present embodiment to prepare polychelate fertilizer comprises the following steps:
[0052] 1) Add 40kg of threonine mother liquor, 6kg of water and 2kg of chemically pure anhydrous calcium chloride solid into the reaction kettle respectively, stir and heat to 60°C;
[0053] 2) continue to add respectively 15kg chemically pure anhydrous magnesium sulfate solid, 5kg chemically pure FeSO in the reactor 7H 2 O solid, 1kg chemically pure ZnSO 7H 2 O solid and 0.2kg chemically pure borax;
[0054] 3) Add an aqueous solution of sodium hydroxide dropwise to the reactor, and always control the pH value of the solution in the reactor between 6 and 8;
[0055] 4) Heating up to 80-85°C, stirring and reacting for 2 hours;
[0056] 5) putting the reaction mixture into a cooling pool for crystallization by cooling;
[0057] 6) drying the crystals obtained in step 5) until the moisture content is less than 5%;
[0058] 7) Gri...
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