Preparation method of high nitrogen compound fertilizer

• Main Authors: WU YOULI, HAN CHAOYING, XIANG SHUANGLONG, HE RUNLIN, XU LIQIN, TANG LIJUN, WANG CAIYAN, LIAO JIXING, LUO FULANG, HE HUA
• Format: Patent
• Language: Chinese; English
• Published: 04.09.2018
• Subjects: CHEMISTRY; FERTILISERS; FERTILISERS CHARACTERISED BY THEIR FORM; MANUFACTURE THEREOF; METALLURGY; MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS

The invention relates to the technical field of fertilizer, in particular to a preparation method of high nitrogen compound fertilizer. The preparation method comprises the following steps: uniformlymixing liquefied sulfur with sodium dodecyl sulfonate phosphate, and carrying out mixed reaction on a mixture and ammonia gas; adding nano-activated carbon for carrying out cooling crystallization andseparating out a crystal; then mixing the crystal with potassium nitrate and ammonium zinc sulfate for granulating to obtain acid fertilizer. The acid fertilizer disclosed by the invention has high acidity, can reduce the pH value of soil and is especially suitable for the improvement on alkaline soil; the acid fertilizer has the advantages of quick effect, high improvement efficiency and low useamount, so that the yield and the quality of crops are improved and overall growth and development of plants are promoted. 本发明涉及肥料技术领域，尤其涉及种高氮复合肥的制备方法，包括：将硫液化与磷酸十二烷基磺酸钠混合均匀，与氨气混合反应，加入纳米活性炭降温结晶，分离出晶体，再与硝酸钾、磷酸铵锌混合造粒得酸性肥。本发明酸性肥料的