Articles
  • The manufacturing of sintered bricks from clay and red mud derived from the alumina processing plant
  • Ngoc Tuyen Trana,*, Duc Vu Quyen Nguyena, Van Minh Hai Hoa, Xuan Tin Danga and Ngoc Quang Tranb
  • a Department of Chemistry, College of Sciences, Hue University, Vietnam b Department of Environmental Science, College of Sciences, Hue University, Vietnam
Abstract
In this study, the manufacturing of sintered bricks from clay and red mud was presented. The initial materials and obtained bricks were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray fluorescence (XRF), and differential scanning calorimetry-thermal gravimetry (DSC-TG). The compressive strength, water absorption, bulk density and sintering shrinkage of sintered bricks were performed. The effects of components of raw materials, sintering temperature and time on physico-mechanical properties of the products was investigated. The results showed that the bricks prepared at 1000 oC for 1 hr with raw material containing up to 50% of red mud provided excellent physico-mechanical properties. The obtained brick met the Vietnam standard VS1451-1998 and was satisfied the construction material requirements that were safe to human's health and friendly with environment in terms of alkaline leaching and radioactivity indexes.

Keywords: Red mud, Clay, Sintered brick.

This Article

  • 2017; 18(5): 366-372

    Published on May 31, 2017

Correspondence to

  • E-mail: