Paper Title:

Analysis and Application of Oxalic Acid Modified Sodium Silicate Binder

Periodical Advanced Materials Research (Volumes 573 - 574)
Main Theme Environment Science and Materials Engineering
Chapter Chapter 1: Environment Materials and Chemical Environment
Edited by Zhenyu Du and Peiyu Ren
Pages 31-34
DOI 10.4028/www.scientific.net/AMR.573-574.31
Citation Li Ge Wang et al., 2012, Advanced Materials Research, 573-574, 31
Online since October, 2012
Authors Li Ge Wang, Fan Zhang, Yang Zhang, Long Zhou, En Ze Wang
Keywords Modification, Oxalic Acid, Sodium Silicate
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A new type of pellet binder was prepared with oxalic acid as sodium silicate chemical modification agent in this paper, the compressive strength of which improved obviously. It improved from 0.6 KN/a to 2.4 KN/a, when the amount of oxalic acid is 8%. Meanwhile, carboxyl introduced at 390°C started carbonization decomposition, and pelletizing properties wouldn't be affected without new pellet impurity. The analysis shows that adding oxalic acid introduces carboxyl only in the binder, but doesn't generate new functional groups; Polymer layer formed by carboxyl adsorption on sodium silicate gel particle surface limits colloidal particle growing up, and plays roles of refining colloidal particle and improving the bonding strength.

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