metallurgy 2

52問 • 1年前

Aira Moral

通報

問題一覧

In the Merrill Crowe process of gold cyanidation, the residue used to precipitate the gold is

Zn dust

The CaO in CN solution to maintain protective alkalinity is

0.10%

n the Carbon in Pulp process of gold recovery, granular carbon is called

after the gold is dissolved in the agitators

It refers to the amount of valuable metal in the ore

tenore of ore

Screens used for Sizing of feed to a primary crusher

grizzly

Ore dressing is considered as

Physical process

If there is a distinctive difference in surface property, the process indicated for concentration is

flotation

The wall rock with the ore in the process of mining is called

waste

The process in ore dressing which consist of crushing and grinding is called

communution

Free settling means that particle is settling on

water

A cyclone is _______ equipment

sizing

The minerals that respond most readily to flotation are

sulfides

Depressors are substances that

prevents collectors to anchor on the mineral surface

Lime is added in flotation as

pH regulator

Tonnage of ore depends on

all of the above

Saturation (Ms)

mineral sp. gr. and porosity

The effect of moisture in the ore is

increase the weight w/o no increase in volume

The effect of porosity in the ore

increase the volume w/o any addition in weight

Density of solid ore in which both voids and moisture are not included

rock sp. gr. – dried

The percentage of the metal in the concentrate against the total metal contained in the ore is called

recovery

The ratio of the weight of the head to the weight of the concentrate is called

concentration ratio

In ore dressing, assay head is

actual assay of the head

In reporting metallurgical testing, we always use the

calculated head

A ratio of concentration of 50 to 1 means that

50 tons of ore produced 1 ton of concentrate50 tons of ore produced 1 ton of concentrate

Leaching gold is consideredLeaching gold is considered

extractive metallurgy

Work index is a measure of

Degree of liberation of the ore

The width of the opening at the discharge of a crusher is

Set

Most copper primary mines uses

jaw

Sluice boxes are used in

Gravity, concentrating process

refers to the factor by which the volume of materials is reduced to weight in tons, usually expressed as cu ft per ton

Factor tonnage

damage factor that is equal to 2000 over 62.5 has a unit of

cu. Ft/it

Weight of a substance relative to that of pure water at a 4°C is

Specific gravity

Voids or pores spaces within a material expressed as a percentage of the total volume of the materials is called

Poisture

Voids may be

All of the above

Ore is composed of

None of the above

The specific gravity over density of war in which the voids are considered, but excluding the moisture content is

Rock specific gravity dried

The process of electrochemically dissolving copper from impure and selectively, plating the dissolved copper in pure form

Electro refining

Quantitative determination in which metal or metals are separated from impurities by fusion processes, and weighed in order to determine the metal content

fire assaying

Selective the solution of silver and other base metals from Duray using dilute nitric acid solution, leaving a dull gold flake

parting

Added as a source of lead

litharge

Weight of lead in grams prevented from being reduced by 1 g of a substance

oxidizing power

Powerful, basic flux and by far the cheapest one available it melts at 852°C. It is often charged equal to the weight of the ore sample.

Sodium carbonate

Active readily diffusible acid flux it is often used as a cover for crucible fusion

borax

A few simple compound of earth or metallic, oxides and silica and other acid constituents

slag

Fusion is scared out at _____ temperature

1000 to 1200°C

The molten charge is stored in an inverted cone called

cast iron mold

Cupellation temperature ranges from

850 to 1000°C yes

They reducing power of meter or salt Peter is

4.2

What is the maximum temperature for the fusion stage?

1200°

Which of the following are undesirables in fire assaying

matte and speiss

Which among the following is not a classification of slag material?

pentasilicate slag

In the general sampling procedure The first lot should be what size the whole lot

20%

metallurgy

Aira Moral · 100問 · 1年前

metallurgy

100問 • 1年前

Aira Moral

EXAM NO: 1 : GEOLOGY AND MINING TERMS

Aira Moral · 100問 · 1年前

EXAM NO: 1 : GEOLOGY AND MINING TERMS

100問 • 1年前

Aira Moral

EXAM 2: Geology and Mining Terms

Aira Moral · 50問 · 1年前

EXAM 2: Geology and Mining Terms

50問 • 1年前

Aira Moral

EXAM 3

Aira Moral · 80問 · 1年前

EXAM 3

80問 • 1年前

Aira Moral

Principles of Mining

Aira Moral · 25問 · 1年前

Principles of Mining

25問 • 1年前

Aira Moral

MINERALS

Aira Moral · 51問 · 1年前

MINERALS

51問 • 1年前

Aira Moral

master

Aira Moral · 5問 · 1年前

master

5問 • 1年前

Aira Moral

STRUCTURAL GEOLOGY

Aira Moral · 11問 · 1年前

STRUCTURAL GEOLOGY

11問 • 1年前

Aira Moral

問題一覧

In the Merrill Crowe process of gold cyanidation, the residue used to precipitate the gold is

Zn dust

The CaO in CN solution to maintain protective alkalinity is

0.10%

n the Carbon in Pulp process of gold recovery, granular carbon is called

after the gold is dissolved in the agitators

It refers to the amount of valuable metal in the ore

tenore of ore

Screens used for Sizing of feed to a primary crusher

grizzly

Ore dressing is considered as

Physical process

If there is a distinctive difference in surface property, the process indicated for concentration is

flotation

The wall rock with the ore in the process of mining is called

waste

The process in ore dressing which consist of crushing and grinding is called

communution

Free settling means that particle is settling on

water

A cyclone is _______ equipment

sizing

The minerals that respond most readily to flotation are

sulfides

Depressors are substances that

prevents collectors to anchor on the mineral surface

Lime is added in flotation as

pH regulator

Tonnage of ore depends on

all of the above

Saturation (Ms)

mineral sp. gr. and porosity

The effect of moisture in the ore is

increase the weight w/o no increase in volume

The effect of porosity in the ore

increase the volume w/o any addition in weight

Density of solid ore in which both voids and moisture are not included

rock sp. gr. – dried

The percentage of the metal in the concentrate against the total metal contained in the ore is called

recovery

The ratio of the weight of the head to the weight of the concentrate is called

concentration ratio

In ore dressing, assay head is

actual assay of the head

In reporting metallurgical testing, we always use the

calculated head

A ratio of concentration of 50 to 1 means that

50 tons of ore produced 1 ton of concentrate50 tons of ore produced 1 ton of concentrate

Leaching gold is consideredLeaching gold is considered

extractive metallurgy

Work index is a measure of

Degree of liberation of the ore

The width of the opening at the discharge of a crusher is

Set

Most copper primary mines uses

jaw

Sluice boxes are used in

Gravity, concentrating process

refers to the factor by which the volume of materials is reduced to weight in tons, usually expressed as cu ft per ton

Factor tonnage

damage factor that is equal to 2000 over 62.5 has a unit of

cu. Ft/it

Weight of a substance relative to that of pure water at a 4°C is

Specific gravity

Voids or pores spaces within a material expressed as a percentage of the total volume of the materials is called

Poisture

Voids may be

All of the above

Ore is composed of

None of the above

The specific gravity over density of war in which the voids are considered, but excluding the moisture content is

Rock specific gravity dried

The process of electrochemically dissolving copper from impure and selectively, plating the dissolved copper in pure form

Electro refining

Quantitative determination in which metal or metals are separated from impurities by fusion processes, and weighed in order to determine the metal content

fire assaying

Selective the solution of silver and other base metals from Duray using dilute nitric acid solution, leaving a dull gold flake

parting

Added as a source of lead

litharge

Weight of lead in grams prevented from being reduced by 1 g of a substance

oxidizing power

Powerful, basic flux and by far the cheapest one available it melts at 852°C. It is often charged equal to the weight of the ore sample.

Sodium carbonate

Active readily diffusible acid flux it is often used as a cover for crucible fusion

borax

A few simple compound of earth or metallic, oxides and silica and other acid constituents

slag

Fusion is scared out at _____ temperature

1000 to 1200°C

The molten charge is stored in an inverted cone called

cast iron mold

Cupellation temperature ranges from

850 to 1000°C yes

They reducing power of meter or salt Peter is

4.2

What is the maximum temperature for the fusion stage?

1200°

Which of the following are undesirables in fire assaying

matte and speiss

Which among the following is not a classification of slag material?

pentasilicate slag

In the general sampling procedure The first lot should be what size the whole lot

20%