NEW QUESTION 56
The functions of refractories include resistance to other destructive influences such as abrasion, pressure, chemical attack, and or rapid changes in temperature is called.

NEW QUESTION 57
Castable, gunning mixes, ramming mixes, plastics, and mortars are

NEW QUESTION 58
Section of transfer line in which flow is in an upward direction is called

NEW QUESTION 59
The vessel downstream of the reactor used to separate different product fractions is called

NEW QUESTION 60
The selected compression test section of the specimen for the CCs test shall be free from

NEW QUESTION 61
For air-setting phosphate bonded, erosion-resistant refractories mixing, the mixer’s paddles, and bowls shall be

NEW QUESTION 62
The welding method utilizing an arc-welding machine in conjunction with a timer and a gun is called

NEW QUESTION 63
Spalling of layers from the hot surface of a refractory lining is called

NEW QUESTION 64
For fire clay and some high alumina materials, the most commonly used index of refractoriness is known as:

NEW QUESTION 65
Compositions of ground refractory materials which require relatively high temperatures for the development of an adequate bond (commonly called the ceramic bond) is called

NEW QUESTION 66
Mechanical wearing away of the surfaces of refractory bodies in service by washing action of moving liquid or gases is called

NEW QUESTION 67
Based on-screen analysis, the size of Alumina – silicate aggregate in typical modern castable is

NEW QUESTION 68
Refractories that are resistant to chemical attack by both acid and basic slags, refractories, or fluxes at high temperature is

NEW QUESTION 69
A metallic anchor, usually V-stud which has a foot-shaped configuration at the base to aid weld attachment to the shell is called.

NEW QUESTION 70
A metallic anchor made from rod or bar stock that is configured in a V-shape is called

NEW QUESTION 71
Which function of refractories is to resist temperature?

NEW QUESTION 72
Arrange for testing at either an independent laboratory or the manufacturer’s plant is

NEW QUESTION 73
The length of metal fiber is

NEW QUESTION 74
Cristobalite is an important constituent of

NEW QUESTION 75
As per ASTM C- 704, for the erosion tests, silicon carbide grit is to be used by

NEW QUESTION 76
Refractories containing a substantial amount of silica which is reactive with basic refractories, basic slags, or basic fluxes at high temperatures are known as

NEW QUESTION 77
The vessel in which coke and residual hydrocarbons are burned off the catalyst and the flue gas is then separated from the catalyst is called

NEW QUESTION 78
The property of matter by virtue of which heat energy is transmitted through particles in contact.

NEW QUESTION 79
Refractory lined pipe used for the transport of hot particulate medium and gases between process vessels is called