安徽农业大学学报2017，Vol.44Issue(5)：947-952,6.DOI:10.13610/j.cnki.1672-352x.20171017.023
柱状竹炭基肥挤压造粒成型工艺的研究
Research on extrusion granulation forming process of columnar bamboo charcoal based fertilizer
摘要
Abstract
In order to explore the use of extrusion granulation technology to prepare high quality columnar bamboo charcoal based fertilizer using bamboo charcoal and wood vinegar,,the homemade extrusion molding device and universal testing machine were combined as an extrusion granulation platform.Single factor experiment was carried out,employing compressive strength,water resistance,and density as comprehensive judging indexes,to examine the effect of binder type,binder content,bamboo charcoal content,forming pressure,and die aperture on test index.On this basis,an orthogonal experiment was carried out to screen the best molding process.The results showed that binder type,binder content,molding pressure and die aperture had significant effects on the compressive strength,while compressive strength influenced by bamboo charcoal content was not significant.The water resistance was remarkably influenced by binder type,binder content and die aperture,while it was not significant affected by bamboo charcoal content and forming pressure.The binder type and bamboo charcoal con tent showed significant impacts on the density,while other factors had no significant effect on the density.The best combination by means of comprehensive balance method was 50％ of bamboo charcoal content,sodium lig nin sulfonate being binder type,20％ of binder content,10 MPa of molding pressure,and 5 mm of die aperture.Under the conditions,the compressive strength,density and water resistance were 36.90 N,1.190 g·cm-3,and 93.45 min,respectively.关键词
竹炭/木醋液/生物炭基肥/挤压造粒/成型Key words
bamboo charcoal/wood vinegar/biochar-based fertilizer/extrusion granulation/forming分类
农业科技引用本文复制引用
魏春辉,任奕林,苑晓辰,邓宇玄,周广生..柱状竹炭基肥挤压造粒成型工艺的研究[J].安徽农业大学学报,2017,44(5):947-952,6.基金项目
国家科技支撑项目(2014BAD11B03)和中央高校基本科研业务费专项资金项目(2014PY044)共同资助. （2014BAD11B03）
