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我厂生产的砖瓦坯体,一部分是采用人工方法干燥。根据几年来的生产实践,現对人工干燥砖坯应注意的几个問題,談談个人的一点体会,供同志們参考。我厂的砖坯人工干燥室是逆流式隧道干燥室。其热介质从一端鼓入而从另一端排出;砖坯与热介质按相反方向移动。具体的干燥过程是装湿坯的干燥車沿隧道洞向前移动,由与其方向相逆的热介质(热气流)逐步加热从而得以干燥。在干燥过程中,干燥室內要?忠欢ǖ臏囟取⑹群头缢?气流速度)。其中主要的应注意以下几点: 1.成型水分。在保証产品质量和成型要求的前提下,应尽量减小成型水分,以减少干燥热耗和縮短干燥周期。2.湿坯溫度魅敫稍锸沂钡臏囟扔τ敫稍锸胰肟诘奈露纫恢?两者間的溫度差一般应控制在±5℃以內绻庖?
Some of the brick blanks produced by our factory are manually dried. According to several years of production practice, several issues that should be noticed in artificially drying bricks are discussed and a personal experience is provided for reference by comrades. Our factory’s artificial brick drying room is a counter-current tunnel drying room. The hot medium is blown from one end and discharged from the other end; the brick and heat medium move in opposite directions. The specific drying process is that the drying car carrying the wet material moves forward along the tunnel hole and is gradually heated by the heat medium (hot gas flow) that is opposite to its direction and is dried. During the drying process, the drying chamber should pick up (6) the air flow rate. The main ones should pay attention to the following points: 1. Forming moisture. In the premise of ensuring product quality and molding requirements, the forming moisture should be reduced as much as possible to reduce the drying heat consumption and shorten the drying cycle. 2. The temperature of the wet billet is slightly higher than the value of ±5 °C. The temperature difference between the two must be controlled within ±5°C.