sand-finished brick

The sand filtration system was built by a 10m length, 2m width, 2m depth flume with construction of brick and cement. The building was divided into eight sand filter beds, which were packed with three kinds of sands in a cube 1m long.

试验构建一个长约10m、宽2m、高2m的砖混结构渗滤池，渗滤池分隔为8个小渗滤池，选择3种不同的沙分别构建1m3见方的渗滤床。

Sand, brick, and stone are generally used in constructing houses.

砂 、 砖和石头通常用于建造房屋.

Production technology and development status of autoclaved fly ash brick and sand-lime brick in China

蒸压粉煤灰砖及蒸压灰砂砖生产技术及发展

Scope of business: brick machine, sand machine, crusher, stove.

经营范围: 砖机 、 砂机 、 破碎机 、 回风炉.

Fine coal ash can be used as building raw materials for cement, sintering brick, sand brick, air brick used in road and dyke construction, also they can be used as insulation material, fertilizer, etc..

粉煤灰用于建筑行业，可作水泥配料、烧结砖、灰砂砖、空心砌砖及筑路、筑坝的原料，还可用作保温棉，肥料等。

The paper describes the development status, process, equipment, technology and problems for autoclaved fly ash brick and sand-lime brick at home and overseas.

主要介绍了国内外蒸压粉煤灰砖及蒸压灰砂砖的发展现状、生产工艺流程、生产装备、生产技术关键及其生产和应用中存在的相关问题。