Introduction
Šodien tu mācīsies par cementa ražošanas tehnoloģiju.Ir svarīgi zināt kā cements tiek ražots,jo cements ir izejviela māju, vēsturisku pieminekļu un citu svarīgu infrastruktūru izveidē.Lai iemācītos par cementa ražošanu,tev būs jāizmanto šis links:
https://www.youtube.com/watch?v=n-Pr1KTVSXo
Today you are going to learn about cement production tehnology.It is important to know how cement is made because cement is used to build houses, monuments and other important infrastructures.To learn about cement you will use this link :
https://www.youtube.com/watch?v=n-Pr1KTVSXo
Task
Use this video to give answers to these questions.
The correct answers write in Microsoft Word document.
1.What is cement?
2.Where does the cement production begin?
3.Where do the trucks dump the rocks?
4.What does the constant spray off water do at the first crusher?
5.Is the amount of ingredients used to make the cement always the same?
6.What three ingredients could be added to the crushed rock?
7.What is the temperature of the powder upon entering the preheater?
8.What is the temperature of the burners gas flame at the bottom of the rotary kiln?
9.What is the name of the powder when it reaches the 15 000 degree mark and fuses into pieces about the size off marbles?
10.What does the added gypsum do?
Process
To complete the task,you will need to watch the video and answer the questions.At the end you will be able to see how carefully you have watched the video and how many points you got.
Evaluation
1.Cement is fine grated powder that is used to make concrete. (1 point)
2.The action beging at the limestone quarry(1 point)
3.The trucks drop the rocks into primary crusher(1 point)
4.It keeps the dust from going up and seteling on the shoots.(1 point)
5.No, the amount of ingredients used dependes on the cement they are making(1 point)
6. Silica(1 point), iron(1 point), aluminum oxide(1 point)
7. 80 degrees Celsius(1 point)
8. 16 to 17 hundred degrees Celsius( 1 point)
9.Klinker(1 point)
10.Gypsum delays cement setting time(1 point)
| Points | 1 | 2 | 3 | 4 | 5 | 6-7 | 8-9 | 10-11 | 12 | 13 |
| Mark | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Conclusion
Thank you for doing this task.You learned about cement production tehnology I hope it was interesting for you.This information will be useful in the future when you will build something or you will need to help someone with choosing the better cement.I hope you will use this knowleadge in the future. Thank you.
Credits
Link is taken from www.youtube.com