Influence of Inorganic Ceramic Body Reinforcing Agent on Properties of Solid Waste Ceramic Slurry and Strength of Green Bodies
A key issue that needs to be resolved in the production of structural ceramics is to obtain green bodies with sufficiently high strength,while maintaining a good slurry flowability.Attapulgite,calcined attapulgite and sodium silicate solution were utilized as composite reinforcing agents,for building ceramics derived from wollastonite tailings.The influence of the agents on fluidity of the slurries and strength of the green bodies was examined.It is demonstrated that the introduction of attapulgite improved flow rate and dispersion of the slurries.Calcined attapulgite underwent a polymerization reaction in the presence of sodium silicate solution,thereby enhancing the binding strength between particles.At drying temperature of 90 ℃ for 45 min,with 2 wt.％attapulgite,0.6 wt.％calcined attapulgite,and 0.8 wt.％of sodium silicate solution with a modulus of 2,slurries with high fluidity could be obtained and strength of the green bodies was improved.
solid waste utilizationwollastonite tailingsreinforcing agentslurry fluiditystrength of the green bodies
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