The effect of heat treatment on colemanite processing: a ceramics application

Removal of acid blue 062 on aqueous solution using calcinated colemanite ore waste

“…Accordingly, specific surface of the sample increases. Upon heating beyond 500 • C, the specific surface area of CW decreases probably due to decomposition of colemanite [36]. The effect of particle size of on the removal of AB 062 by CW calcinated at 500 • C is given in Fig.…”

High‐pressure behavior and P‐induced phase transition of CaB3O4(OH)3·H2O (colemanite)

“…Similar studies were also performed in the fields of ceramics‐ and glass‐production. Yildiz and Yildiz et al report that calcined colemanite can be used as a starting material in the production process of CaB 6 , whereas the use of colemanite as source of boron in the production of borosilicate glasses and heatproof ceramics was reported by Pavlyukevich et al and Kichkailo and Levitskii, respectively. This interest in the use of colemanite in different production processes is triggered by the presence of large volumes of colemanite‐rich tailings at the mining extraction sites, which is the source for a low‐cost material.…”

Phase transformation of transient B4C to CaB6 during production of CaB6 from colemanite

“…1 shows the X-ray powder analyses of this raw material. Colemanite loses its crystal water (∼21 wt.%) by endothermic reactions between temperatures of 300 • C and 460 • C. 41,42 Before calcination at 600 • C the raw material possesses a particle size <250 m (∼31 wt.%), while after calcination this fraction comprises ∼86 wt.%. This as-calcined fraction <250 m shows a surface area of 2.80 m 2 /g and contains 52 wt.% of amorphous B 2 O 3 and 30 wt.% CaO according to the chemical and the X-ray diffraction analyses (Fig.…”