9分雅思图表小作文范文全集之流程图 水泥制作与生产

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9分雅思图表小作文范文全集之流程图 水泥制作与生产双流程The diagram below shows the stages and equipment

used in the cement-making process, and how cement is used to produce concrete

for building purposes.

范文集结：全部15篇9分雅思流程图范文汇总放送

参考范文：

The diagrams illustrate the way in which cement is made and how it is then

used in the process of making concrete. Overall, limestone and clay pass through

four stages before being bagged ready for use as cement which then accounts for

15% of the four materials used to produce concrete. While the process of making

cement uses a number of tools, the production of concrete requires only a

concrete mixer.

In the first stage of making cement, limestone and clay are crushed together

to form a powder. This powder is then combined in a mixer before passing into a

rotating heater which has constant heat applied at one end of the tube. The

resulting mixture is ground in order to produce cement. The final product is

afterwards put into bags ready to be used.

Regarding the second diagram, concrete consists of mainly gravel, which is

small stones, and this makes up 50% of the ingredients. The other materials used

are sand (25%), cement (15%) and water (10%). These are all poured into a

concrete mixer which continually rotates to combine the materials and ultimately

produces concrete.(187)