LQ3 Activity Flashcards
What cement manufacturing company has the largest plant in the Philippines?
Eagle Cement
What is the mixture of burnt lime and volcanic ash created by the Phoenicians called?
Pozzolana
Which of the following statements is NOT TRUE?
- The cement industry is the third largest industrial source of pollution
- China is the largest producer of cement in the world
- India is the third largest producer of cement
- The cement sector emits more than 500,000 tons per year of sulfur dioxide, nitrogen oxide, and carbon monoxide
India is the third largest producer of cement
Which of the following are the raw materials of cement?
I. Limestone
II. Clay
III. Silica
IV. Marble
I, II, & III
What do you call the process of thermal decomposition of limestone (CaCO3)?
Calcination
It is called as the heart cement production where the actual chemical transformation
Rotary Kiln
Which of the following is not a factor affecting the product quality of cement?
- Pressure
- Cooling Rate
- Kiln Temperature
- Product Quality
Pressure
Who is responsible for the creation of Portland cement?
Joseph Aspdin
What is the purpose of adding gypsum in the cement mixture?
Helps in controlling the setting time of cement
What was replaced in the 1900s by rotary kilns?
Vertical shaft kiln
The first blast furnace was created in?
China, 1st Century
True or false. Iron Ore comes in the form of Hematite (Fe2O3) and Magnetite (Fe3O4)
True
Limestone, which is mostly comprised of Calcium Carbonate (CaCO3), serves to
Remove impurities from molten iron
Factors affecting raw materials include:
Quality, transportation, regulations, global demand
True or false. SteelAsia and Puyat Steel Corporation are 2 prominent participants in the Steel Industry
True
Steel is primarily used to form which products:
Construction material, home appliances, vehiccles
Which of the following is NOT an environmental concern of this industry?
- Intensive use of energy
- Soil and water acidification
- Biodiversity loss
- Release of greenhouse gases
Biodiversity loss
Which of the following is NOT considered a constraint of the industry?
- High cost of raw material
- Lack of competition
- Poor infrastructure
- High cost of electricity
Lack of competition
How does sintering contribute to the processing of iron?
It minimizes energy consumption and raw material waste by increasing permeability
Cold rolling:
Improves dimensional accuracy, surface quality, and strength
