Tower-granulated low-nitrogen high-phosphorus urine sulfur radical compound fertilizer and preparation method thereof
A technology of high-tower granulation and compound fertilizer, which is applied in fertilizer forms, fertilizer mixtures, fertilization devices, etc., can solve problems such as difficulty in meeting the needs of crop growth, facilitate mechanized fertilization, improve soil fertilizer utilization, and resist pressure. high intensity effect
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[0046] Example 1
[0047] Prepare the high-tower granulated low-nitrogen high-phosphorus urea-sulfur-based compound fertilizer of the present invention according to the following steps
[0048] A. Pulping
[0049] a. Urea melting, metering and feeding
[0050] Pour granular urea into the urea belt conveyor, through the bucket elevator, lift to the urea silo, and enter the urea melter through the screw conveyor. After the urea is melted, it flows into the urine buffer tank, and is transported to the urine buffer tank through the urine pump and mass flow meter. The first mixing tank at the top of the tower, the urea melt entering the first mixing tank is 35 parts by weight;
[0051] b. Other raw material measurement and feeding
[0052] The monoammonium phosphate and potassium sulfate are respectively poured into the belt conveyor and lifted to their respective silo by the bucket elevator. An electronic metering belt scale is installed at the bottom of the silo to measure 32.3 parts by we...
Example
[0055] Example 2 ~ Example 7
[0056] According to the method and steps of Example 1, the high-tower granulated low-nitrogen and high-phosphorus urea-sulfur-based compound fertilizer of the present invention was prepared according to the raw material formula of Table 1
[0057] Table 1
[0058] raw material name
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