[EN] The invention relates to lignin-bound biochar coated urea and a preparation method thereof and belongs to the technical field of utilization of agricultural biomass. A binder used in the lignin-bound biochar coated urea comprises acid-precipitated lignin, a pyroligneous liquid and water in different weight ratios. The preparation method comprises the following steps of dissolving acid-precipitated lignin in a pyroligneous liquid or a pyroligneous liquid and water to obtain the binder; and granulating, spraying and drying to obtain the lignin-bound biochar coated urea finished product. The binder is novel in components and environment-friendly; the preparation method is reasonable and simple, the preparation process is simple and feasible, low in production cost; and the urea has the advantages of high fertilizer utilization rate, long fertilizer effect time, light environmental pollution and good antibacterial effect, and the soil structure is improved.

[ZH] 木质素粘结生物炭包膜尿素及制备方法属于农业生物质利用技术;所述木质素粘结生物炭包膜尿素中的粘结剂由酸沉木质素、木醋液和水按不同重量比组成,通过利用木醋液或木醋液、水将酸沉木质素溶解,得粘结剂;再经造粒、喷淋、烘干工艺得木质素粘结生物炭包膜尿素成品;本发明的粘结剂组份新颖、环保,制备方法合理、简单,制造工艺简便易行,生产成本低廉,肥料利用率高,肥效时间长,环境污染轻,改善土壤结构,抑菌效果好。

Title
[ZH] 木质素粘结生物炭包膜尿素及制备方法
[EN] Lignin-bound biochar coated urea and preparation method thereof
Application Number
201510070595.2
Publication Number
104628482A
Application Date
February 7, 2015
Publication Date
May 20, 2015
Inventor
GAO ZHONGZHI
JIA YUEWEN
LU SHUANG
ZHAO CHENXI
LUO LI NA
WANG QIUJING
JIANG ENCHEN
QIN LIYUAN
Assignee
NORTHEAST AGRICULTURAL UNIVERSITY
IPC
C05G 3/04
C05G 3/02
C05G 3/00