engineering

William H. Peirce

William H. Peirce is a engineering topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand William H. Peirce rather than just read about it. In short: William H. Peirce (died 1944) was an American civil engineer and metallurgist, who pioneered copper production in the early 20th century.

Key takeaways

William H. Peirce belongs to engineering; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect William H. Peirce to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of William H. Peirce from memory before moving on to harder problems.

Reference excerpt

William H. Peirce (died 1944) was an American civil engineer and metallurgist, who pioneered copper production in the early 20th century. Among his achievements was the Peirce-Smith converter, invented with Elias Anton Cappelen Smith.

Life He joined the Baltimore Copper Smelting & Rolling Company in 1890, becoming vice president in 1895, and later, president of the company. Under his management, the company became one of the major copper producer of the United States. In 1928, the company merged with five other copper companies, to create the Revere Copper Company. Described as "one of the foremost metallurgists of his time", Peirce became the vice president, director and a member of the Executive Committee of Revere from its incorporation in 1928 until his resignation in 1933.

Invention of the Peirce–Smith converter

The Peirce–Smith converter, developed in 1908 with Elias Anton Cappelen Smith, significantly improved the converting of copper matte. Before this invention, the converter was a cylindrical barrel, lined with an acid refractory lining, made of sand and clay. It was developed by two French engineers, Pierre Manhès and Paul David from 1880 to 1884. Their copper-converting process, named the Manhès–David process, was directly derived from the Bessemer process. In this horizontal chemical reactor, where air was injected into copper matte, a molten sulfide material containing iron, sulphur and copper, to become molten blister, an alloy containing 99% copper. But the basic slag produced during the blowing combined with the acid silica refractory lining, thereby causing a very short lifetime of the lining. By developing a basic refractory material adapted to the matte refining process (in magnesia bricks), Peirce and his engineer Smith found a way to drastically increase the lifetime of the lining. It has been stated that, in some cases, the process allowing an increase from 10 to 2500 tons of copper produced without relining the converters. A reduction of the cost of copper converting from 15–20 USD to 4–5 USD has been stated. The Peirce-Smith converter quickly replaced the Manhès–David converter: by March 1912, the Peirce-Smith Converting Co claimed that "over 80% of the copper produced in [the U.S.] is being converted either in P-S type converters or on basic lining, under license, in the old acid shells". It is still in use today, although the process has been significantly improved since then. In 2010, with 250 converters working in the world, the Peirce-Smith converters refine 90% of the copper matte.

Honors In 1931, Peirce, still president of the Baltimore Copper Smelting & Rolling Co., as well as being President of the Peirce-Smith Converter Company and vice president of the American Smelting & Refining Company, is awarded of the James Douglas medal, for "his numerous improvements in devices for smelting, refining, and rolling copper".

References

Worked examples

Example 1 — a first encounter with William H. Peirce

Start with the simplest possible case. Write down what William H. Peirce claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to William H. Peirce before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about William H. Peirce ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of William H. Peirce

In research: William H. Peirce appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses William H. Peirce in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: William H. Peirce is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1944 deaths, American civil engineers, History of metallurgy, so understanding it makes those chapters shorter.
In everyday life: Look for William H. Peirce outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study William H. Peirce in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what William H. Peirce means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain William H. Peirce out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is William H. Peirce in simple terms?

William H. Peirce (died 1944) was an American civil engineer and metallurgist, who pioneered copper production in the early 20th century.

Why does William H. Peirce matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study William H. Peirce?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on William H. Peirce.