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一、前言天然轻骨料不仅具有自重轻、保温性能好’施工适应性强等优点。它和人工轻骨料相比尚有生产投资少,产品成本低,能源消耗少等优点。通常折合形成1立方米人造轻骨料生产能力的投资约为40～50元,而折合形成1立方米天然轻骨料生产能力的投资仅为10～15元,即使考虑矿山20公里专用线投资在内也不过20～25元/米~3。从节约能源的角度来看,它要比人工轻骨料省得多,据国外资料,一般烧制1立方米陶粒用重油20公斤左右,而开采及破碎1立方米浮石仅用3公斤重油。当然,人工轻骨料也有自身的优
I. INTRODUCTION The natural lightweight aggregate not only has the advantages of light weight, good heat preservation performance, and strong construction adaptability. Compared with artificial lightweight aggregate, it still has the advantages of less production investment, lower product cost and less energy consumption. The investment equivalent to the production capacity of 1 cubic meter of artificial light aggregate is generally about 40 to 50 yuan, and the investment equivalent to the production capacity of 1 cubic meter of natural light aggregate is only 10 to 15 yuan, even if considering the investment of 20 kilometers of dedicated mine line However, it is only 20 to 25 yuan/m3. From the perspective of energy conservation, it is much less expensive than artificial light aggregates. According to foreign data, generally 1 cubic metre of ceramsite is burnt with about 20 kilograms of heavy oil, while 1 cubic metre of pumice is used for the extraction and crushing of only 3 kilograms of heavy oil. Of course, artificial lightweight aggregate also has its own advantages.