Aluminum ore a diaspore, boehmite and gibbsite. These are the aluminum ore. Indicators of industrial aluminum ore cutoff grade, open pit mining and pit mining of the Al-Si ratios are 1.8-2.6, of Al2O3> 40%; the lowest industrial grade, Al-Si-ratio of Surface Mining ? 3.5, pit mining ? 3.8, Al2O3, ? 55% .
A diaspore, also known as water, aluminum stone, structural formula and molecular formula AlO (OH) and Al2O3 · H2O. Orthorhombic crystal integrity was columnar, platy, scaly, needle-like, prismatic. Water boehmite, soluble in acid and alkali, but dissolved at room temperature and atmospheric pressure is very weak, and need to completely break down under high temperature and high pressure and strong acid or alkali concentration.
Boehmite after Ming Bomu stone,Sand production line soft water boehmite structure of AlO (OH), the molecular formula of Al2O3 · H2O. Orthorhombic crystalline intact was the diamond body, facet-like, prismatic, acicular, fibrous, and hexagonal plate. A boehmite can be dissolved in acid and alkali. The mineral is formed in acidic media, mainly produced in the deposition of bauxite, is characterized by symbiosis with siderite.
Gibbsite also known as water bauxite, boehmite (OH), structure of Al (OH), the formula of Al2O3 · 3H2O. Monoclinic system crystalline integrity of the hexagonal plate, prism-shaped, often showed a fine-crystalline aggregates or twins, ore gibbsite irregular shaped aggregates, soluble in acid and alkali, the powder heated to 100 ? can be completely dissolved by 2h. The mineral is formed in acidic media. Slovenia quarries crusher