选取粗砂、粉煤灰、细煤渣、活性炭和空心砖粉块作为介质，再按适当的比例配成填料处理柱，进行处理低浓度生活污水的研究。
Grit, fly ash, cinder residue, active carbon, air brick detritus were used as filtering media according to proper proportion for low concentration domestic sewage treatment.
兼营釉用化工原料、 硅酸锆、锆英粉、锆英砂、 萤石粉及各种规格水晶砖、亚光砖、仿古砖和抛光砖。
Glaze concurrently with chemical raw materials, zirconium silicate, zircon flour, zircon sand, fluorite powder and all kinds of crystal tiles, matt tiles, antique tiles and polished.
以萤石尾砂和珍珠岩废矿粉为主要原料，制备出环保型陶瓷透水砖，探讨了原料配方、成型压力和烧成工艺对透水砖性能的影响。
The effect of raw material formulation, firing process and molding pressure had been probed on the maim characteristics of water permeable ceramic brick.
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