青石就是俗称的石灰石或沙子石头。 其主要成分为碳酸钙。 碳酸钙是一种化学式为碳酸钙。 CAS编号为471-34-1。 它是在地球上常见的物质，它可以在岩石中找到。 基本上，它不溶于水。 颜色为黑色，灰色，白色，黄色或褐色。

使用大量的石灰和石灰石的建筑材料和它也是一个重要原料许多行业。 石灰石可直接加工成石料和烧制成生石灰。 生石灰的主要成分是氧化钙，这是一般的块状。 石灰吸收水份或水加入到成为熟石灰，其主要成分也被称为的Ca（OH）2，可被用作涂层材料和瓷砖胶粘剂。

规范
测试标准：（GB / T32B6-1998）
的SiO2（二氧化硅）：3.63％
曹（氧化钙）：51.74％
的MgO（氧化镁）：0.7％
主要用途：建筑，防火材料

Bluestone is commonly known as limestone or sand stone. Its main component is calcium carbonate. Calcium carbonate is a chemical formula is CaCO3. CAS No. is 471-34-1. It is common substances on earth, which can be found in the rock. Basically, it does not dissolve in water. The colors is black, gray, white, yellow or brown.

A large number of lime and limestone used as building materials and it is also an important raw material for many industries. Limestone can be directly processed into stone and fired into the quicklime. The main ingredient of quicklime is CaO, which is generally blocky. Lime to absorb moisture or water is added to become slaked lime, and its main component is also called Ca (OH) 2. It can be used as coating materials and tile adhesives.

Specification
Testing standards: (GB/ T32B6-1998)
sio2 (silica) : 3.63%
cao (calcium oxide) : 51.74%
MgO (magnesium oxide) : 0.7%
Main purpose: construction, fire prevention materials