The calcium carbonate industry, development status and characteristics of mixing granulator
Calcium carbonate industry granulating machine general requirements is high efficiency, low energy consumption, simple configuration, convenient control, covers an area of area is small, the operating environment, safety and health. At present, the inorganic salt industry uses more common, mixing and granulating machine with: tube rotary dryer, indirect heating rotary dryer, disc continuous dryer, air flow dryer (including pulse airflow and airflow rotation, positive and negative pressure secondary airflow drying), spin flash dryer, rotary drum dryer, spray dryer (granulation, powder, centrifugal type, pressure type), vibrating fluidized bed dryer, static vacuum drying machine, hot air circulation oven, rake, paddle type vacuum drier, boiling dryer (horizontal and vertical).
These efficient mixing granulator provides a guarantee for the quality of products, but there are "exhaust dust" problem. Due to the increasing of nano products, the original particle size more and more fine, paste material potential water content increased, and enterprises constantly to large-scale, scale development, and companies eager to efficient mixing and granulating machine combination. Especially some large tonnage products, such as precipitated calcium carbonate, currently more than 300 million tons of the national production capacity and minimum production line with an annual output of 1 million tons, the scale of 10 million tons to five sets, mixing and granulating machine, a business planning in Guangxi to get 50 million tons, according to the current, mixing and granulating machine level, regardless of the device covers an area or product after drying the exhaust quantity of dust collection is great.
According to the current industry commonly used pulse bag type dust remover, the operating environment is very bad, we must take effective measures to solve them. Therefore, we hope that the equipment research and development units to solve two problems, one is the high water content of the cream of fine dry problem, the two is the object after the exhaust gas to close the "dust" industrial health problems. Still with calcium carbonate industry, for example, more than 200 companies nationwide, in the selection of efficient mixing and granulating machine, the basic use of indirect heating rotary dryer, continuous disc dryer, rotary array pipe drier, production efficiency while satisfied, energy consumption and exhaust collection "dust" is not ideal, into calcium carbonate Enterprises, from the ground to the top of the roof is covered with a layer of white calcium carbonate powder, even on office desks and chairs is a layer of white, this have management problem, more important is after drying tail gas collection "dust" does not pass. Recently, the introduction of the United States DuPont Co production of dust removal equipment, the basic solution to the problem.
Therefore the combination, mixing and granulating machine should include: to provide heat source equipment,, secondary, mixing granulator, tail gas collecting dust equipment etc., hope equipment manufacturing, research units in the aspects of high thermal efficiency, low energy consumption, simple configuration, convenient control, efficient mixing and granulating machine combination in the, and others, to develop their own. If the calcium carbonate industry to solve the problem of dry, to achieve a high efficiency, environmentally friendly, and other varieties of dry problem to solve the problem.
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