这种物质硬如磐石（石灰石主要就是由碳酸钙构成的），但易溶于酸。
The stuff is tough as a rock (limestone is made primarily of calcium carbonate), but it dissolves instantly in acid.
石灰石原料的煅烧制度和氢氧化钙溶液的浓度将影响碳酸钙结晶的粒度。
The calcinations regulation of limestone and the concentration of calcium hydroxide solution have effects on the granularity of the calcium carbonate crystal.
介绍硝酸铵钙的物化性能，采用硝铵熔融液与石灰石混合法生产硝酸铵钙的工艺技术；
The technology for producing CAN is also described with the mixing process between melted ammonium nitrate and limestone.
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