LONG EXAM Flashcards
the application of analytical-chemical methods to the chemical problems of metallurgy, including problems of valuation and utilization as well as of production
Metallurgical Analysis
the result of definitely ascertaining the position, nature, amount, etc. of any measurement, weighing, or counting
Determination
The result of approximately ascertaining numbers, quantities, magnitudes, etc. without actual enumeration, weighing, or measurement
Estimation
PRE-REQUISITE of effective analysis
Sampling
The art of securing a small weight or fraction, that is representative of a relatively large mass or amount
Sampling
The operation of removing a part of the bulk material, so as to reduce quantity, with minimum alteration of all other characteristics
Sampling
is a progressive process in which the original material is reduced in quantity to the final mass of sample convenient for analysis
Sampling
generally defined as the quantitative estimation of the metals in ores and furnace products
Assaying
also referred to as the determination of all the constituents, both metallic and non-metallic, of ores and metallurgical products
Assaying
AAS, ICP
Spectroscopic Methods
XRF, XRD
X-Ray Methods
determination of all present elements and/or compounds in a given system
Elemental Analysis
used to reveal all the chemicals present; normally, the results are expressed in terms of the various oxides present
Chemical Methods
(Gravimetry, Titrimetry, etc)
Classical Methods
the use of modern instruments to expose and isolate certain characteristics of elements
Instrumental Methods
dissolution of precious metal values from finely divided sample in boiling aqua regia
Acid Digestion
a mixture of concentrated nitric and hydrochloric acids
Aqua Regia
involves measuring the absorption of light by atoms
AAS
provides a rapid and precise means of monitoring up to 50 elements simultaneously;
suitable for almost every element, excluding halogens and inert gases; an ionization source that fully decomposes a sample into its constituent elements and transforms those elements into ions
ICP
a non-destructive analytical technique used to determine the elemental composition of materials; determines the chemistry of a sample by measuring the fluorescent (or secondary) X-ray emitted from a sample when it is excited by a primary X-ray source
X-Ray Fluorescence
a versatile and nondestructive analytical technique that reveals detailed structural and chemical information about the crystallography of materials; provides information about how the various elements are combined together
X-Ray Diffraction
analyzes for chemistry
XRF
determines the mineralogy
XRD
used to make small structures and samples visible by providing a magnified image of how they interact with visible light, e.g., their absorption, reflection and scattering
Light Microscopy
