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METHOD FOR PROCESSING COAL WITH A HIGH CONTENT OF IMPURITIES TO OBTAIN A PURIFIED FUEL MIXTURE UTILIZABLE IN PLACE OF FUEL OIL IN PRESENT-DAY POWER PLANTS
METHOD FOR PROCESSING COAL WITH A HIGH CONTENT OF IMPURITIES TO OBTAIN A PURIFIED FUEL MIXTURE UTILIZABLE IN PLACE OF FUEL OIL IN PRESENT-DAY POWER PLANTS
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机译:处理高含量杂质的煤的方法,以获取可用于当今发电厂的燃油中的纯净燃油混合物
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摘要
Coal slurry is produced for use as fuel. Starting from a raw carboniferous mineral containing various types of impurities, the method of production includes the following stages: a) grinding the raw coal to reduce it to particles of a size less than 75 μm, the ground material then being carried by air drawn in through a grinding mill and on through a filter where a selection is made of the particles; b) immersion of the particles in water to obtain a turbid mixture; c) addition of flotating agents to the turbid mixture and flotation by introduction of air to obtain the coal slurry; d) checking the concentration of coal in the slurry to ensure that it reaches between 40 and 60% by weight per kilogram of slurry, according to the type of carboniferous mineral used at the outset; e) stocking the slurry in a tank where it is kept continuously moving.
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