XVII. Industrial Minerals and Manufacturing Materials

Question 1

an earthy substance consisting chiefly of hydrous aluminum silicates with colloidal material and specks of rock fragments, which generally become plastic when wet and stonelike when fired

Answer 1

Clay

Question 2

in situ clays formed by weathering due to chemical and hydrothermal process

Answer 2

Residual Clays

Question 3

formed by accumulation in sites such as swamps and basins of clayey materials transported by water

Answer 3

Transported clays

Question 4

The raw materials needed in the ceramic industry are—–

Answer 4

clay, feldspar, magnesite, quartz or silica and talc

Question 5

What basic processes do ceramic raw materials undergo, and why is beneficiation necessary for some materials?

Answer 5

undergo comminution, size separation, and processing. Beneficiation is necessary for impure materials to meet the specifications required by ceramic factories.

Question 6

a material that is resistant to decomposition by heat, pressure, or chemical attack, and retains strength and form at high temperatures

Answer 6

a refractory (or refractory material)

Question 7

Refractories used in steel plants are categorized as:

Answer 7

(1) alumino-silicates (clays, sillimanite, kyanite, andalusite, and corundum),
(2) silica and semi-silica, and
(3) basic refractories (magnesite, dolomite, chrome and chromemagnesite)

Question 8

any member of a family of hydrated aluminosilicate minerals that contain alkali and alkaline-earth metals

Answer 8

Zeolite

Question 9

The only known deposit of zeolite, which has been put into production over the Philippines archipelago, is the one situated in ____________.

Answer 9

Mangatarem, Pangasinan