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Study of Rheological Properties of High-solid Clay Disperse System
  
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Key Words:clay; high solid content; disperse system; affter-tack
Author NameAffiliation
王奇琦1 1.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037 
张凤山2,3,4,* 2.中国制浆造纸研究院,北京,100102;3.天津科技大学天津市制浆造纸重点实验室,天津,300457;4.华泰集团有限公司,山东广饶,257335 
景 宜1 1.南京林业大学江苏省制浆造纸科学与技术重点实验室,江苏南京,210037 
曹春昱2 2.中国制浆造纸研究院,北京,100102 
刘 忠3 3.天津科技大学天津市制浆造纸重点实验室,天津,300457 
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Abstract:
      In this paper, properties of disperse system with high solid content of clay were studied through a Taguchi Design of Minitab method, the influence of disperse speed, dispersant and NaOH dosage were discussed, and the time of after-take phenomenon occurred with high solid concent was researched. The results showed that the amount of dispersant is the major factor to affect dispersing efficiency. A suitable condition to prepare the clay suspension can be considered as follows: solid content of 74%, the amount of dispersant 0.05%, and the amount of NaOH 0.01%. The dispersing was conducted at a speed of 2500 rpm for 15 min, and the acquired suspension showed the lowest viscosity and the best performance.
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