Work index is a measure of

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

Fusion is scared out at _____ temperature

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.

Voids may be

A ratio of concentration of 50 to 1 means that

Leaching gold is consideredLeaching gold is considered

In reporting metallurgical testing, we always use the

Lime is added in flotation as

Tonnage of ore depends on

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

Ore dressing is considered as

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

What is the maximum temperature for the fusion stage?

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

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

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

Most copper primary mines uses

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

The molten charge is stored in an inverted cone called

A cyclone is _______ equipment

The effect of porosity in the ore

They reducing power of meter or salt Peter is

Added as a source of lead

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

The CaO in CN solution to maintain protective alkalinity is

Ore is composed of

Cupellation temperature ranges from

It refers to the amount of valuable metal in the ore

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

The effect of moisture in the ore is

Saturation (Ms)

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

Free settling means that particle is settling on

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

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

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

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

Which of the following are undesirables in fire assaying

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

Screens used for Sizing of feed to a primary crusher

The minerals that respond most readily to flotation are

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

In ore dressing, assay head is

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

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

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

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

Sluice boxes are used in

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

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

Depressors are substances that