Calcium carbonate industry with the overall requirements of the pellet mill is high thermal efficiency, low energy consumption, simple configuration, easy control, small footprint, operating environment, safety and health. At present, the inorganic salt industry, the use of more common high-performance mixing granulator are: rotary tube dryer, rotary indirect heating dryer, continuous disk dryer, air dryer (also divided into pulse airflow, airflow, positive and negative pressure two Dry-type), rotary flash dryer, rotary drum dryer, spray dryer (divided into granulation, powder, centrifugal, pressure), vibration fluidized bed dryer, static vacuum dryer, hot air circulation oven , Rake type, paddle type vacuum dryer, boiling dryer (horizontal, vertical) and so on.

These efficient mixing granulator for product quality to provide a guarantee, however, there are exhaust collection "dust" problem. As the nano-scale products continue to increase, the original particle size more and more fine, the potential water content of the paste material increased, coupled with the enterprise to the large-scale, large-scale development of enterprises desire to mix highly efficient granulator. In particular, some large tonnage products, such as precipitated calcium carbonate, the current national production of more than 300 million tons, the smallest production line with an annual output of 10,000 tons, 100,000 tons of scale to five sets of efficient mixing granulator, a business plan in Guangxi got 50 10,000 tons, according to the current level of efficient mixing granulator, regardless of equipment, or product area after drying the exhaust gas to close the "dust" is a big amount.

In accordance with the current industry generally used pulse bag filter, the operating environment is very bad, must take effective measures to solve. Therefore, we hope that equipment research and development unit focused on solving two problems, one is high water content of paste fine dry matter, the second is the object after drying exhaust "dust" industrial hygiene problems. Calcium carbonate industry, for example, the country more than 200 enterprises in the efficient selection of mixing granulator, the basic use of rotary indirect heating drier, continuous disc dryer, rotary tube dryer, production efficiency has been met , Energy consumption and exhaust "dust" is not ideal, a calcium carbonate business, from the ground to the roof are covered with a layer of white calcium carbonate powder, and even in the office tables and chairs is a layer of white, in this regard There are management issues, more importantly, after the exhaust dry "dust", but off. Recently the industry has introduced the United States DuPont produced dust removal equipment, basically solved the problem.
Therefore, the combination of high-performance mixing granulator should include: the provision of heat source equipment, one or two highly efficient mixing granulator, exhaust gas "dust" equipment, equipment manufacturing, research units in high thermal efficiency, low energy consumption, simple configuration, Easy to control and so make a fuss, the combination of efficient mixing granulator make a fuss about, service others, develop their own. If the calcium carbonate industry to solve the drying problem, and achieve a high efficiency equipment, environment-friendly, and other varieties of drying problems like to solve.