ايه اللي كنتوا متوقعين تشوفوه ؟؟؟ 3 قارات 8 دول 39 مصنع.

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Presentation transcript:

ايه اللي كنتوا متوقعين تشوفوه ؟؟؟

3 قارات 8 دول 39 مصنع

About us

1) اصدار تصريح عمل في جميع الاعمال المطلوبة و تقيم مخاطر العمل. 2) عمل الاجرائات اللازمة بعزل الكهرباء كاملة. 3) الاستخدام الامن للادوات و تخزينها بطريقة سليمة. 4) اتباع تعليمات القيادة الامنه داخل المصنع وفقا لقواعد الشركة. 5) اتباع اجرائات السلامة عند العمل علي ارتفاعات.

Manufacturing Cement

Brief History

اساحبي مش الأسمنت ده بيبقي حاجة زي تراب علي الأرض و احنا بناخده نعبيه في شكائر و نبيعه ؟ !

Step 1 - Quarrying: The raw material for cement manufacture is a rock mixture which is about 80% limestone (which is rich in CaCO 3 ) and 20% clay or shale (a source of silica, alumina and Fe 2 O 3 ).These are quarried and stored separately. The lime and silica provide strength of the cement, while the iron reduces the reaction temperature and gives the cement its grey color.

Conveyor Belt

Step 2 - Raw material preparation : (The dry process) 1) Clay and limestone are crushed until nothing bigger than a tennis ball remains. 2) Samples are then sent off to the laboratory for mineral analysis.

1) Pre-heater tower The powder from the dry process doesn't contain much moisture, so can be dried in a pre-heater tower

~ 3M

2) The kiln : This is the step which is characteristic of Portland cement. The finely ground material is dried, heated (to enable the sintering reactions to take place) and then cooled down again. While it is being heated various chemical reactions take place to form the major mineral constituents of Portland cement.

مشاريع بيئية

   cement/cement-manufacturing-process cement/cement-manufacturing-process  nzic.org.nz/ChemProcesses/inorganic/9B.pdf References