In recent years, Cement Institute of China Building Materials Academy has made extensive research on the modification of such a kiln and an industrial test has been made in Lalin Cement Plant.
近年来，中国建材研究院水泥所在立筒预热器窑改造方面进行了研究，并在拉林水泥厂搞了强化预热的工业性试验。
The R & D work in these countries has proceeded from the laboratory bench scale with big progress in semi-industrial test to the stage of the building of a demonstration plant.
从中可见在这些国家中实验室规模的研究业已完成，半工业化试验也有很大进发，开始进入筹建示范电厂的阶段。
Calcination temperature, time and acid concentration were tested in laboratory and then scale-up test was carried in an industrial plant, both giving satisfying results.
在实验室试验中对煅烧温度、时间、酸浓度等条件进行试验，然后在工业装置中进行放大试验，结果令人满意。
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