South Africa andalusite concentrate powder, how much money one ton andalusite, andalusite concentrate powder

I remember a few days ago a customer in andalusite RFQ Q: calcined andalusite is it? On this issue I will briefly explain. Andalusite is a natural crystalline material, prior to use without calcination, high purity and identity are its main features. Why do you say? Because andalusite from 1300 ℃ begins to decompose, its initial mullitization starting from the particle surface edge, especially solid phase inclusions edge of the most prominent, but also the first to break down at containing impurities; 1350 ℃ along the longitudinal direction of andalusite obviously see to Mok Dan Shengcheng, but tiny crystals: 1400 ~ 1450 ℃ mullite crystal growth grew up with a certain direction, parallel to the crystal surface andalusite, andalusite dark glass phase can be seen inside; to at 1500 ℃, mullitization complete, the resulting gap SiO2 glass phase into the crystal, and the presence of mullite phase, but still remains andalusite illusion; 1600 ℃ when mullite crystal growth significantly. To sum it up: from 1300 ℃ andalusite into mullite beginning, so no need for calcination can be used. Zhengzhou City PBL Refractories Refractories provide you with professional quality, high quality, fair prices. For more information, please visit our website: http://www.gwncw.com/ Contact: Guo Jingli Tel: 0371-53792696 Mobile: 15803878813 QQ: 1071106660 We will give you the most satisfactory answer, welcomed the consultation.