LQ3 Cement

Question 1

Extraction of raw materials such as limestone, clay, shale, and other materials from quarries.

Answer 1

Quarrying Raw Material

Question 2

Crushing the extracted raw materials to reduce their size and facilitate easier handling and further processing.

Answer 2

Raw material processing (primary and secondary crushing)

Question 3

Blending and grinding the crushed raw materials in the correct proportions to form a uniform raw mix.

Answer 3

Raw material preparation (proportioning and grinding)

Question 4

Water is added to the raw mix to form a slurry (a semi-liquid mixture), which is easier to blend and homogenize before feeding into the kiln.

Answer 4

Slurry mixing and blending

Question 5

The raw materials are mixed and blended without water to create a dry meal.

Answer 5

Dry mixing and blending

Question 6

The dry meal is preheated and partially calcined using hot gases before it enters the rotary kiln. This improves energy efficiency.

Answer 6

Preheater/precalciner

Question 7

The raw mix (slurry in wet process or dry meal in dry process) is heated at high temperatures (~1450°C) to produce clinker, the main ingredient in cement.

Answer 7

Rotary kiln

Question 8

Rapidly cools the hot clinker from the kiln to preserve its structure and recover heat for reuse.

Answer 8

Clinker cooler

Question 9

Stores cooled clinker before further processing.

Answer 9

Clinker storage

Question 10

The clinker is ground with gypsum and sometimes fly ash to regulate setting time and improve the quality of the cement.

Answer 10

Clinker grinding

Question 11

The final cement product is packed in bags or bulk and prepared for shipment and delivery to customers.

Answer 11

Packaging and dispatch