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Mineral Processing > Introduction (LAST YEAR quiz) > Flashcards

Introduction (LAST YEAR quiz) Flashcards

1
Q

The ability of a mineral to resist hammering

A

Tough

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2
Q

The waste minerals contained in the ore that are not of economic interest

A

Gangue

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3
Q

The enriched product of mineral processing which contains most of the valuable minerals

A

Concentrates

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4
Q

Minerals which contain similar chemical compositions but have different crystal structures resulting to varied physical properties

A

Polymorphs / Polymorphic Minerals

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5
Q

A physical property of a mineral which measures the amount and quality of the light reflected from its surface

A

Luster

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6
Q

Aluminum, being the most abundant metal in earth’s crust, has a relative abundance of?

A

8.07%

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7
Q

This is generally expressed as the percent metal present in a mineral

A

Mineral Content

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8
Q

Refer’s to the Mineral’s degree of transparency or the percentage of light that is transmitted through it.

A

Diaphaneity

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9
Q

Minerals in which metals are extracted

A

Metallic Minerals

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10
Q

this Mineral has a hardness around 6 - 6.5, brass yellow color, metallic luster and a greenish/brownish streak

A

Pyrite

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11
Q

This mineral has a hardness of 2.5, silvery in color, metallic luster, and a lead-grey streak

A

Galena

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12
Q

This mineral is the chief source of Mercury

A

Cinnabar

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13
Q

Chemical Formula of Gypsum

A

CaSO4 2H2O

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14
Q

Anaerobic process of converting an ore into an oxide through heating but without fusion or melting done to remove impurities or volatile components such as the removal of carbon from limestone

A

Calcination

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15
Q

This follows mining and prepares the ore for extraction of the valuable metal in the case of metallic ores or to produce a commercial end product as in the case of mineral such as potash (soluble salts of potassium) and coal

A

Mineral Benefication

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16
Q

The grade of precious metals in reported in terms of

A

Ounce per Ton

17
Q

The term for the material that is introduced into the unit operations of mineral processing

18
Q

What mineral deposit has the lowest grade of all mined ores?

A

Diamond Ore

19
Q

Ores containing profitable amount of more than 2 valuable mineral

A

Complex ore

20
Q

What is the highest rank of coal? Known as the hard coal

A

Anthracite

21
Q

Mineral that is also known as Pitchblende

22
Q

Chief Source of Aluminum

23
Q

The emission of light during exposure to ultraviolet and xrays?

A

Fluorescence

24
Q

Mixture of two or more metals usually for the purpose of Imparting greater strength and to resist corrosion?

25
Q

Conversion of Sulfides ore to oxide ores in the presence of air by heating it below its melting point?

26
Q

DEFINE

Recovery

A

Recovery in mineral processing refers to the percentage of valuable minerals successfully extracted from the ore during the beneficiation process.

27
Q

DEFINE

Cut-off Grade

A

the minimum grade (concentration) of a mineral in an ore that is considered economically viable to extract.

28
Q

DEFINE

Degree of Liberation

A

refers to the percentage of the mineral as free
particles in the ore in relation to the total content.

29
Q

DEFINE

Smelting

A

Smelting is a process used to extract a base metal from its ore by heating the ore beyond its melting point in the presence of a reducing agent (such as carbon) to separate the metal from impurities.

30
Q

DEFINE

Leaching

A

mineral processing to extract valuable metals from their ores by dissolving them in a solvent. This technique is often employed when the desired metals are embedded within ores that are not easily amenable to conventional smelting.

31
Q

minerals where substitution of atoms
within the crystal structure by similar atoms take place
without affecting the atomic structure, i.e., different
composition but same atomic structure.

A

Isomorphic Minerals

32
Q

A mineral can replaced by another
mineral without any change in the external from.

A

Pseudomorphism

33
Q

the property of some chemical elements to
exist in two or more different forms in the same physical
states

A

Allotropism

34
Q

This is a laboratory investigation wherein the output
is the mineral form (i.e. sulfide, oxide, carbonate, etc.) of the valuable
metal and its liberation size.

A

Ore Microscopy

35
Q

refers to the practice adapted in the laboratory to
determine the size distribution of the particles in a given sample.

A

Size Distribution

36
Q

The size up to which the particles will be ground to
ensure complete liberation or 80% liberation of the valuable mineral.

A

Mesh of Grind

37
Q

I N WHICH ELEMENTS PRESENT
IN THE SAMPLE ARE IDENTIFIED.

A

QUALITATIVE ANALYSIS

38
Q

In which the quantity of elements or compounds present in the sample is estimated

A

QUANTITATIVE ANALYSIS

Mineral Processing (12 decks)

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