NO.28 For fire clay and some high alumina materials, the most commonly used index of refractoriness is known as:

NO.29 As installed testing is the terminology for testing refractory that was sampled during installation in order to confirm that they meet specified.

NO.30 The selected compression test section of the specimen for the CCs test shall be free from

NO.31 Compositions of ground refractory materials which require relatively high temperatures for the development of an adequate bond (commonly called the ceramic bond) is called

NO.32 A separation between adjoining parts of a refractory lining that allows small expansive movements, such as those caused by thermal change is known as

NO.33 A metallic anchor used to attach ceramic anchors to the casing or shall of a processing unit is

NO.34 A group of rock minerals having nearly perfect cleavage in one direction and consisting of thin elastic plates and the most common varieties are muscovite and biotite is called

NO.35 The formation of slag takes place by chemical action and fusion at furnace operating temperature in the way of

NO.36 Spalling of layers from the hot surface of a refractory lining is called

NO.37 Additives used to facilitate moisture removal of refractory linings during dry out are called

NO.38 The vessel downstream of the reactor used to separate different product fractions is called

NO.39 The welding method utilizing an arc-welding machine in conjunction with a timer and a gun is called

NO.40 The standard size of a fabricated test panel for pneumatic gunning qualification is

NO.41 A metallic anchor, usually V-stud which has a foot-shaped configuration at the base to aid weld attachment to the shell is called.

NO.42 The increase in linear dimensions and volume which occurs when materials are heated and which is counterbalanced by contraction of equal amounts when the materials are cooled.

NO.43 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

NO.44 A group of impure magnesium silicate minerals that occur in a fiberous form is known as

NO.45 The surface of a refractory section exposed to the source of heat