Bentonite is a clay rock, also known as montmorillonite clay rock, normally containing a small amount of illite, kaolin, halloysite, chlorite, zeolite, quartz, feldspar, calcite and the like; hardness 1-2, density 2~ 3g / cm3. Exchangeable cations of the smectite type, content and layer charge size, bentonite can be divided sodium bentonite (alkaline soil), calcium bentonite (alkaline soil), natural bleaching earth (soil acidity or acidic clay), which calcium include calcium bentonite and sodium and calcium and magnesium group.
1. One kind of semi-wet activated clay efficient production methods, which include: the amount of bentonite and inorganic acids mixed; 2. At a temperature and pressure of the activation mixture; use of a certain amount of water to flush the activated slurry PH = 4; 3. And into the cake filtration, drying, grinding and other processes, which was characterized in that: a, activation temperature and pressure is generally increased to 200 ~ 300 , and 15 to 40 atmospheres; 4. Rinse water slurry shall be equally divided into a number of equal parts, in turn;