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A high-tower granulation and compound fertilizer technology, which is applied in the direction of fertilizer mixture, fertilization device, application, etc., can solve the problems of fertilizer decomposition and loss, high production cost, and difficult degradation, etc., and achieve simplified granulation production process and simple production process , the effect of saving drying energy consumption
Active Publication Date: 2012-04-11
STANLEY AGRI GRP CO LTD
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[0003] However, the nutrient utilization rate of sulfur-based compound fertilizers in the prior art is only 25%-35%, and the utilization rate of nitrogen fertilizer is less than 30%, the loss is particularly serious, and it causes soil pollution and pollution of the atmospheric environment.
[0004] The production process of sulfur-based compound fertilizer is complicated, the production energy consumption is high, the equipment is corroded, and resources are wasted, which leads to high production cost and pollutes the environment
[0005] Chinese patent CN 200510102650.8 discloses a
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Embodiment 1
[0090] Prepare the high-tower granulation slow-release long-acting high-phosphorus-sulfur-based compound fertilizer of the present invention according to the following steps
[0091] Step 1. Preparation of high tower granulated urea compound fertilizer granules
[0092] a. Urea melting
[0093] Accurately weigh 35 parts by weight of urea, put it into the melting tank, heat it to 138°C, prepare for first-stage mixing;
[0094] b. Preheating of monoammonium phosphate and potassium sulfate
[0095] Accurately weigh 36 parts by weight of monoammonium phosphate and 29 parts by weight of potassium sulfate, put them into the first-level mixing tank, preheat to 58°C, and set aside;
[0096] c. Preparation of low temperature eutectic
[0097] The molten urea prepared in step a is sent to the primary mixing tank, mixed with the monoammonium phosphate and potassium sulfate preheated in step b, and then put into the secondary mixing tank for further mixing, and the slurry mixing time is less than 4mi...
Embodiment 2～ Embodiment 7
[0111] According to the method and steps of Example 1, and the formula in Table 1, the high-tower granulation slow-release long-acting high-phosphorus-sulfur-based compound fertilizer of the present invention was prepared.
[0112] Table 1
[0113] Raw materials
[0114] The high-tower granulation slow-release long-acting high-phosphorus-sulfur-based compound fertilizers prepared in Examples 1 to 7 are suitable for wheat, corn, rice field crops, vegetables and fruit trees, and increase the fertilizer utilization rate by 12.9%-18.4. %, an average increase of 6.7%-14.3% for crops and an average increase of 10.1-26.4% for vegetables.
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Abstract
The invention discloses a hightower pelletization slow-release long-acting high-phosphorus sulfenyl compound fertilizer and a preparation method thereof. The compound fertilizer belongs to a mixed fertilizer. The preparation method comprises the following steps of: preparing hightower pelletization urea compound fertilizer granules by a hightower pelletization device; and wrapping the urea compound fertilizer granules with paraffin waxes and re-wrapping the granules with modified zeolite powders. The hightower pelletization urea compound fertilizer granules are composed of the following raw materials in parts by weight: 31-49 parts of urea, 30-36 parts of monoammonium phosphate and 15-39 parts of potassium sulfate; the usage amount of the paraffin waxes is 0.5-1.0% of the hightower compound fertilizer in percentage by weight; and the modified zeolite powders are composed of the following raw materials in parts by weight: 1-5 parts of zinc stearate and 95-99 parts of zeolite powder. The hightower slow-release long-acting high-phosphorus sulfenyl compound fertilizer which can be used with a hightower pelletization device and is good in slow-release effect, high in utilization rate of fertilizer nutrient, high-phosphorus, simple in process and lower in production cost and is beneficial for soil, atmosphere and water environment protection, and a preparation method thereof are provided.
Description
Technical field [0001] The invention is a high-tower granulation slow-release long-acting high-phosphorus-sulfur-based compound fertilizer and a preparation method thereof. Belongs to compost. Background technique [0002] The sulfur element in the sulfur-based compound fertilizer is the fourth essential nutrient element for crop growth after nitrogen, phosphorus, and potassium. The chloride ion content is less than 3%, which can effectively improve the soil sulfur deficiency and directly provide sulfur nutrients for crops. Sulfur-based compound fertilizer has strong adaptability to crops and soil and has a wide range of applications. It is suitable for all kinds of food crops and economic crops, as well as tobacco, sugarcane, potato, tea and other chlorine-free crops. It can be used as base fertilizer, top dressing, seed fertilizer and root Topdressing outside. It plays an extremely important role in increasing the yield of crops and improving the quality of agricultural produ...
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