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我厂烘新砂用的卧式干燥炉长7米,直径1420毫米,炉体容积10.8米~3,转速6转/分,以煤为燃料。新砂用圆盘给料机送入干燥炉内,其最高合水量允许在15％(重量百分比)。干燥过程中,水分蒸发量为500～550公斤/小时,干燥炉生产率为3吨/小时,炉体进砂口温度为800℃,出砂口为100～200℃。一、卧式干燥炉扬尘的特点使用新砂干燥炉时,除了溢出大量灰尘外,还有大量水蒸汽和热量产生。由于我们过去对这一特点没有掌握,因此所设计的吸尘设备没有考虑水蒸汽和热量的问题。过去我们采用一只旋风集尘器(干式)和一只通风机(电动机为A52—4,功率为7千瓦),其风量为7500米~3/时,风压为120毫米水柱,风管内流速为14米/秒。这组设备仅使用了三天就损坏了,
Our factory used fresh sand drying horizontal furnace 7 meters long, diameter 1420 mm, furnace volume 10.8 m ~ 3, speed 6 rev / min, coal as fuel. The new sand with a disc feeder into the drying furnace, the maximum water content of 15% (by weight). During the drying process, the water evaporation is 500-550 kg / h, the productivity of the drying furnace is 3 tons / hour, the temperature of the furnace inlet sand is 800 ° C, and the outlet of the sand outlet is 100-200 ° C. First, the characteristics of horizontal drying furnace dust The use of new sand drying furnace, in addition to overflowing a lot of dust, there are a lot of water vapor and heat generation. Because we did not have this feature in the past, the design of vacuum equipment did not consider the issue of water vapor and heat. In the past we used a cyclone dust collector (dry) and a fan (motor A52-4, power of 7 kW), the air volume of 7500 m ~ 3 / h, air pressure is 120 mm water column, the air duct Flow rate of 14 m / s. This set of equipment was damaged in only three days,