Brief Introduction of Magnesite Dehydration And Calcination: Magnesite powder or fine powder is subjected to flotation, and then a flash swirl dynamic calciner is used to obtain high-quality light-burned active magnesium oxide. The waste heat is utilized to rapidly disperse and dehydrate the raw or wet powder until it reaches a moisture content of less than or equal to 1%, allowing for the recovery in its original granularity. Subsequently, the dry powder undergoes a preheating process before entering the calciner. The powders are instantaneously disperssed by the high-temperature swirl upstream inside the furnace chamber, resulting in a larger specific area and ensuring sufficient pyrolysis of the powders under temperatures ranging from 950 degrees Celsius to 1000 degrees Celsius. The powders release CO2 and crystal water instantly under high temperature heating, forming porous magnesium oxide granules. The calcination process lasts for 3 to 5 seconds without over-burning or under-burning. An enclosed sub-atmospheric system ensures no dust leakage, hence a high recovery rate equal to or greater than 99.9%. The calcined powder can be used as a flue gas desulfurizer, heavy-duty building cement, and fire-proof material.Parameters:Working Principle of Flash Swirl Dynamic Calciner: The SKDS flash swirl dynamic calcination system consists of an energy-efficient hot blast stove, a feed quantity-measurable feeder, a drying granulator, a pre-heating warmer, a calciner, a cyclone dust collector, a heat exchanger, an air cooling system, an air blower, and temperature and pressure measurament system as well as an electronic control system. The residual heat from the calciner is transported to the dryer under sub-atmospheric pressure using a coal gas or natural gas hot blast stove. The raw ore powder is conveyed into the dryer, resulting in instant convection between the material and hot air. This process allows for dehydration to be completed within three to five seconds, achieving a water content of ≤1%. The material is carried by the dryer tail gas into a cyclone dust collector and a bag filter for gas-solid separation, The separated gas is discharged into a preheater by an induced draft fan, while the separated material undergoes multi-stage preheating before entering the flash swirl dynamic calciner. In the upstream swirl, the granules are adequately pyrolyzed, releasing CO2 and crystal water and decomposing into porous magnesium oxide granules. The caicination process is completed within 3 to 5 seconds. The material is transported by negative pressure airflow into the gas-solid separator. Afterwards, the separated powders are directed into a ripe material silo for indirect heat transfer and discharged through a discharge valve. The hot ripe material undergoes air cooling under negative pressure before being conveyed into a storage silo.Reference Pictures: /* January 22, 2024 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(",").forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
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