Hightower pelletization slow-release long-acting high-phosphorus sulfenyl compound fertilizer and preparation method thereof

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...

AI Technical Summary

Problems solved by technology

[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 melt slurry tower granulation compound fertilizer and its manufacturing method. One of the technical problems to be solved is that the structure of the compound fertilizer produced by the traditional granulation method is relatively loose, the fertilizer dissolves and releases quickly, and the fertilizer efficiency is high. Break down lost blocks, problems with low fertilizer use efficiency

Resin coatings are expensive and do not degrade easily in soil

[0007] High-tower granulation slow-release long-acting high-phosphorus-sulfur-based compound fertilizers are rare in the prior art

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