Coal gangue compound fertilizer and preparation method thereof
A coal gangue and compound fertilizer technology, applied in urea compound fertilizers, nitrogen fertilizers, organic fertilizers, etc., can solve problems such as cracked lips of potatoes and sweet potatoes, unrecyclable coal gangue, and poor surface quality, so as to improve economic benefits and ecology Benefits, high starch, low production cost
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Embodiment 1
[0018] Embodiment 1: a kind of coal gangue compound fertilizer, its component weight ratio is: 70 jin of coal gangue, 10 jin of 45% nitrogen-containing urea, 3 jin of hydrochloric acid, 10 jin of pine needles, 24 jin of weeds, 4 jin of oil cake, Its preparation method comprises the following steps:
[0019] (1) Flour making: Make 60-80 mesh powders from the proportioned coal gangue, 45% nitrogen-containing urea, hydrochloric acid, pine needles, weeds, and oil cake;
[0020] (2) Mixing: mix the powders of each ingredient ratio in step (1) evenly;
[0021] (3) Fermentation: The compound raw material in step (2) is sealed and fermented at 20-30°C for 5-7 days;
[0022] (4) Test the pH after fermentation in step (3), pH5-7, if it is less than, use alkali to adjust.
Embodiment 2
[0023] Embodiment 2: a kind of coal gangue compound fertilizer, its component weight ratio is: 68 jin of coal gangue, 9 jin of 45% nitrogen-containing urea, 2.8 jin of hydrochloric acid, 9 jin of pine needles, 22 jin of weeds, 3 jin of oil cake, Its preparation method comprises the following steps:
[0024] (1) Flour making: Make 60-80 mesh powders from the proportioned coal gangue, 45% nitrogen-containing urea, hydrochloric acid, pine needles, weeds, and oil cake;
[0025] (2) Mixing: mix the powders of each ingredient ratio in step (1) evenly;
[0026] (3) Fermentation: The compound raw material in step (2) is sealed and fermented at 20-30°C for 5-7 days;
[0027] (4) Test the pH after fermentation in step (3), pH5-7, if it is less than, use alkali to adjust.
Embodiment 3
[0028] Embodiment 3: a kind of gangue compound fertilizer, its component weight ratio is: 72 jin of coal gangue, 11 jin of 45% nitrogen-containing urea, 3.2 jin of hydrochloric acid, 11 jin of pine needles, 26 jin of weeds, 5 jin of oil cake, Its preparation method comprises the following steps:
[0029] (1) Flour making: Make 60-80 mesh powders from the proportioned coal gangue, 45% nitrogen-containing urea, hydrochloric acid, pine needles, weeds, and oil cake;
[0030] (2) Mixing: mix the powders of each ingredient ratio in step (1) evenly;
[0031] (3) Fermentation: The compound raw material in step (2) is sealed and fermented at 20-30°C for 5-7 days;
[0032] (4) Test the pH after fermentation in step (3), pH5-7, if it is less than, use alkali to adjust.
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