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Q: In the process of brick manufacturing, the pug mill is used in which of the following operation?
  • A. Blending
  • B. Burning
  • C. Tempering
  • D. Weathering
Correct Answer: Option C - Tempering– Tempering consists of kneading the earth with feet so as to make the mass stiff and plastic. • It should preferably be carried out by storing the soil in a cool place in layers of about 30 cm thickness for not less than 36 hours. • For manufacturing good brick, tempering is done in pug mills and operation is called pugging. • In pug mill, feeding of clay from top and taking out of pugged clay from bottom are done simultaneously Blending– • The clay is the mixed suitable ingredients • It is carried out by taking a small portion of clay every time and by turning it up and down in vertical direction. Weathering– • The earth is the dugout from the ground • The period may be of few weeks to a season
C. Tempering– Tempering consists of kneading the earth with feet so as to make the mass stiff and plastic. • It should preferably be carried out by storing the soil in a cool place in layers of about 30 cm thickness for not less than 36 hours. • For manufacturing good brick, tempering is done in pug mills and operation is called pugging. • In pug mill, feeding of clay from top and taking out of pugged clay from bottom are done simultaneously Blending– • The clay is the mixed suitable ingredients • It is carried out by taking a small portion of clay every time and by turning it up and down in vertical direction. Weathering– • The earth is the dugout from the ground • The period may be of few weeks to a season

Explanations:

Tempering– Tempering consists of kneading the earth with feet so as to make the mass stiff and plastic. • It should preferably be carried out by storing the soil in a cool place in layers of about 30 cm thickness for not less than 36 hours. • For manufacturing good brick, tempering is done in pug mills and operation is called pugging. • In pug mill, feeding of clay from top and taking out of pugged clay from bottom are done simultaneously Blending– • The clay is the mixed suitable ingredients • It is carried out by taking a small portion of clay every time and by turning it up and down in vertical direction. Weathering– • The earth is the dugout from the ground • The period may be of few weeks to a season