where does lead in a pencil come from and how is it made?

Answer 1

It's a mix of graphite and clay. The harder pencils - for draughtsmanship - have more clay and the softer pencils - for sketching - have more graphite. HB has an equal amount.

It's mixed into a paste and then piped down the length of the pencil shafts (which are split down the middle at first then glued together to make the whole pencil).

The whole thing is dried to form a pencil.

Answer 2

it's a nontoxic mixture of graphite and clay.

The connection between graphite and lead stems from the days of the Roman Empire (and likely before that), when lead rods were used by scribes to write on papyrus. Both graphite and lead leave a gray mark on paper, although graphite is a bit darker. Graphite didn't come into widespread use for writing until after the 1564 discovery of a very pure graphite deposit in Borrowdale, England. At the time, graphite was thought to be a type of lead and consequently was called black lead or plumbago.

Answer 3

Where Does Lead Come From

Answer 4

lead is dug from deep underground where it is found in huge stores. It is then stuffed into various wooden cylindrical shapes. These, in turn, are used as "pencils" which are used to make marks on stuff.

Actual answer:

Lead in a pencil is not actually "lead" the metal (as in Pb, or plumbum). It is actually graphite, which is a compound of carbon in which the atoms are joined in hexagonal structures. For diamonds, which are also carbon, the atoms are joined in pyramid-like structure. This is what the difference of a few atoms makes to a substance.

Having said that, graphite is found in several places. Associated minerals (what minerals are found near graphite) of if include: quartz, calcite, micas, iron meteorites, and tourmalines. Notable occurrences (where it is found) include New York and Texas in the USA, Russia, Mexico, Greenland, and India.

Answer 5

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Answer 6

The 'lead in pencils is actually no longer lead, its graphite. And this is technicaly carbon, so i'd guess it's some kind of hard, refined charcoal

Answer 7

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Answer 8

Graphite

Answer 9

lead is no longer used in pencils, as you can see from the other responses, its been replaced with graphite.
because exposure to lead causes illness (lead poisoning leads to mental disease) hence the term "mad hatter". In the olden days hatters used to line the inside of hats with lead, and because of their exposure to lead on a daily basis, they went lunatic, hence the term "mad as a hatter" (alice in wonderland?).
So because kids tend to chew pencils, it has been decided by manufacturers that the lead they used to use ought best be replaced with...graphite.

Answer 10

the lead is actully mined out of the ground.it is a long and work intensive process to get to the pencil stage.there was a progam on discovery channel about it.really interesting.