CEMENT MANUFACTURING

Cement Manufacturing Sector Overview

The Indian cement sector is the second largest in the world after China, as it is home to over 7% of total global installed capacity. In FY22, India’s overall cement production capacity was over 545 million tonnes (MT). The sector is fragmented, with around 365 small and medium scale cement plants accounting for 97% of the total installed capacity. The top 10 large scale cement companies in India account for more than 60% of the total installed capacity. The industry is highly capital intensive, with a high proportion of fixed assets such as land and buildings.

The cement sector is currently undergoing a consolidation phase, with some of the leading players in the industry merging or acquiring other companies to expand their geographical reach or product portfolio. At the same time, cement consumption in India has shown strong growth over the past few years, mainly because of the robust growth in the housing and construction sector. The demand for cement will continue growing in the future, supported by the government’s focus on infrastructure development and housing.

As per estimates, the cement industry production is expected to grow by 12% in the coming five years to meet the rising demand of different sectors, i.e., housing, commercial construction, and industrial construction. This means that more cement plants will be set up across the nation, which will help generate employment and business opportunity for other industrial players.

Use Of Pumps In The Cement Manufacturing Sector:

Pumps are used throughout the cement manufacturing process to move fluids, including water, waste products, and raw materials. Depending on the stage of cement production, different types of pumps are used.

Water pumps are used to remove water from cooling towers and other areas where it is not needed. Slurry pumps move wet concrete mix from batching plants to transport trucks. Centrifugal pumps transfer oil and other liquids in the cement-making process.

Positive displacement pumps are often used to move viscous materials, such as fly ash or kiln feedstock. Diaphragm pumps are also standard in cement because they can handle abrasive fluids without damage.

Pumps are an essential part of the cement manufacturing process because they allow for the movement of fluids throughout the plant. Without pumps, it would be difficult to move materials from one production stage to the next.

Pump Applications In The Cement Manufacturing Sector:

Pumps are an essential part of the cement manufacturing sector and are used in a variety of applications:

RAW MATERIAL PREPARATION

Pumps are used to transport raw materials such as limestone, clay, and sand from storage areas to the crushing plant. This is where the cement production process is initiated.

BLENDING AND HOMOGENIZATION

Raw materials in the form of clay, limestone, sand and others are blended together to create a homogeneous mix. For this, pumps are used to generate the necessary churning power.

KILN FEED

Pumps transport the blended raw mix from the blending/homogenization area to the kiln. The kiln is the main furnace area where the mixture will be heated.

PREHEATER / CALCINER

Pumps are used to circulate hot gases through the preheater/calciner tower in order to preheat or calcine the raw mix. This step expedites the cement manufacturing process.

ROTARY KILN

The preheated raw mix needs to be shifted from the preheater/calciner tower into the rotary kiln. For this, pumps are used to generate the requisite power.

CLINKER COOLER

Pumps are used to circulate cool air through the clinker cooler to cool the newly-formed clinker. The sooner the clinkers cool, the faster they can be moved for grinding.

PACKAGING

Pumps transport the finished cement from the cement mill to storage silos or packing facilities. Here the final product is set up in different packaging.

WASTE HEAT RECOVERY

Pumps circulate hot gases from waste heat recovery units back through the cement manufacturing process to increase overall efficiency.

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