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bentonite clay powder processing plant
Bentonite ore dressing methods generally fall into two kinds of dry method and wet method. Dry beneficiation are commonly used to handle good bentonite ore quality. The method is to run of mine ore drying, natural drying or drying and drying furnace drying, kang with artificial or jaw crusher broken first, reoccupy Raymond mill and roller mill grinding crushed into other level of 100, 150, 200 mesh products for sale. Wet dressing are commonly used to deal with montmorillonite content is 30% ~ 30% of low grade bentonite. The method is to run of mine ore crushing to less than 50 mm graded, made after the suspension, add water in the water separator for grading, fine level obtained concentration enrichment in the precipitator, after drying in the dryer, then grinding, suitable for drilling mud can be obtained the quality product.
Artificial sodium bentonite modification including calcium base bentonite, activated clay and the organic bentonite preparation, etc. Of artificial sodium calcium base bentonite are two kinds of dry method and wet method. Dry process is to sodium reagent (generally for sodium carbonate) join the calcium base soil, after mixing grinding and extrusion, Na, Ca substitution reaction and transformed into sodium base bentonite. Wet method is mixed with soil in reagent, sufficient water mixing dispersion.
The preparation of acidic soil (active) white has two kinds of dry method and wet method. Wet method is in front of the article mixture extrusion, hydrochloric acid or sulfuric acid, water and dispersant, and fully stirring;Dry law just to join the hydrochloric acid or sulfuric acid, fully stirring again can. Organic bentonite is adding sodium base bentonite in the ethylene glycol solution of organic amine salt, after high speed stirring, substitution reaction.
1. The bentonite ore dressing process Bentonite dry beneficiation process is commonly: ore – picking – preliminary drying to early broken to drying, grinding, grading and packaging. Bentonite wet beneficiation process is commonly: ore to pulping, desanding to grading to dehydration, drying, grinding and packaging.
2. The modification process of bentonite Modification process of bentonite is commonly: calcium base bentonite ore – crushing – mixing extrusion – drying – grinding – classification – cyclone air filter – > sodium base bentonite products.
process and equipment
The process of artificial sodium calcium base bentonite is commonly: calcium base soil ore – crushing – adding sodium carbonate (wet method still need to add water) to blend extrusion to rotary kiln drying, grinding, air classification – > sodium based products. Activity process (acid) clay processing is commonly: bentonite – crushing – adding hydrochloric acid or sulfuric acid (wet need add water and dispersant) to fully mixing, mixing extrusion to rotary kiln drying, heating air grinding – classification and storage. The general process for: organic bentonite processing undressed ore – crushing – scattered to retrofit to purification, and ammonium salt (sodium) cover to rinse to dehydration, drying, crushing and packing. Bentonite processing Raymond mill, is the most commonly used equipment in the specification of 3 r, 4 r, 5 r, etc. In addition, during the modification of bentonite, also often use wheel mill and screw extruder mixed grinding, extrusion equipment.