非厌氧消化与厌氧消化污泥制备烧结保温材料性能研究

发布时间：2018-04-12 16:21

本文选题：烧结墙体材料 + 厌氧消化污泥　；参考：《硅酸盐通报》2017年01期

【摘要】：利用几种不同污泥制备烧结保温墙体材料,对比非厌氧消化污泥与厌氧消化污泥制备烧结保温墙体材料的性能。首先分析研究原料的物理、化学性能,结果表明,重庆地区的页岩适宜作为制备污泥砖的掺配料,最佳烧成温度为950℃;污泥具有高含水率,高发热量和高烧失量等特点。其次,选择综合性能较好1#污泥和4#污泥脱水后加入页岩,进行成型烧结,测定制品的成型含水率、干燥收缩率和抗压强度等。结果表明:4#污泥制品的综合性能高于1#污泥。当非厌氧消化污泥掺量为15%,烧成温度为950℃时,试样抗压强度等级达到MU7.5,导热系数为0.3001 W/(m·K),比纯页岩降低了33.33%;当厌氧消化污泥掺量为20%,烧成温度为950℃时,试样抗压强度等级达到MU7.5,导热系数为0.2600 W/(m·K),比纯页岩降低了42.22%。分析可知,在保证强度不变的情况下,厌氧消化污泥可有效提高污泥制砖掺量。
[Abstract]:Preparation of different sludge sintering thermal insulation wall material using several properties of anaerobic digestion sludge and anaerobic digestion sludge preparation sintering wall materials. Firstly, compared with physical, chemical properties of raw materials, the results show that the Chongqing area suitable for preparation of ingredients mixed with shale mud brick, the optimum sintering temperature is 950 DEG C; sludge with high water content, high calorific value and high igniion characteristics. Secondly, choose the better comprehensive performance of 1# sludge and 4# sludge dewatering after adding shale, forming and sintering, molding products Determination of water rate, drying shrinkage and compressive strength. The results showed that the comprehensive performance of 4# products is higher than that of 1# sludge sludge. When the non anaerobic digestion sludge content was 15%, the sintering temperature is 950 degrees centigrade, the compressive strength grade of MU7.5, the coefficient of thermal conductivity is 0.3001 W/ (M - K), 33.33% lower than that of pure shale; when the anaerobic digestion of sludge When the quantity is 20%, the firing temperature is 950 degrees, the compressive strength grade of the sample reaches MU7.5, and the thermal conductivity is 0.2600 W/ (M. K), which is lower than that of the pure shale. 42.22%. analysis shows that under the condition of constant strength, anaerobic digestion sludge can effectively increase the volume of sludge brick making.

【作者单位】：西安建筑科技大学材料与矿资学院;西安墙体材料研究设计院;
【基金】：公益性行业(农业)科研专项(201303101-5A)
【分类号】：TU522.1;TU551

【参考文献】