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湖南株州第一制磚厂的圍窑直径为8米,24个火道,装32层高,每层装4000块坯,全窑容量为12万块。该厂自1958年以来,采用稀煤花坯快烧法,取得了良好效果。稀煤花坏快烧法就是在装窑时,稀放煤,花码砖坯,使批与批之间、煤饼与煤饼之间,以及砖坯与砖坯之间有适当的空气流通,具体码法是每块煤饼间留出空隙,花码砖坯,取斜形,互相错开,使之呈锯齿状。砖坯与砖坯间应形成规律性的花眼(空隙)。上下层之间则应采取开大心,开中心和开小心的办法,使环码与直码交替错开,每个空隙互不联通。砖坯的码法也可以是其他形式的,但空隙最大不超过4厘米。这种焙烧法有以下几项优点:
The Zhuzhou No. 1 Brick Factory in Hunan has a kiln diameter of 8 meters, 24 fire tunnels, 32 layers, 4,000 blanks in each layer, and a total kiln capacity of 120,000. Since 1958, the plant has adopted the method of rapid burning of dilute coal blanks and achieved good results. The dilute coal spent badly burning method is that when the kiln is installed, the coal is thinly laid and the bricks and tiles are used to make the air flow between the batch and the batch, between the coal cake and the coal cake, and between the brick blank and the brick blank. The method is to leave gaps between each piece of briquette, bricks and bricks, take the oblique shape, staggered with each other, so that it is serrated. Regular regular blooms (voids) should be formed between the brick and brick. Between the upper and lower levels should be taken to open the heart, open the center and open carefully, so that the ring code and the straight code staggered, each gap is not interconnected. The brick code method can also be other forms, but the maximum gap does not exceed 4 cm. This baking method has the following advantages: