| 单词 | electric furnace |
| 例句 | “The Murphy administration doesn’t seem to care that people don’t want to replace their gas stoves or undertake expensive conversions to electric furnaces and water heaters,” said state Senate Republican Reader Anthony Bucco. New Jersey tries to upstage California on green energy policies 2023-07-29T04:00:00Z Heat pumps operate with electricity and are generally far more efficient than electric baseboard heat or electric furnaces. Lawsuit seeks to block state building code requirements for heat pumps 2023-03-02T05:00:00Z In related news, on Thursday, U.S. steelmaker Nucor announced it will start making heavy grade steel at a new $1.7 billion mill in Brandenburg, Kentucky, using electric furnaces to make new steel from scrap. US company gets $120 million boost to make ‘green steel’ 2023-01-26T05:00:00Z While electricity is higher in price than gas right now, electric furnaces still save money through their 100% efficiency. 6 sustainable home upgrades to consider in 2023 2023-01-24T05:00:00Z For instance, a steel mill owned by ArcelorMittal on Hamburg’s busy harbor in Germany has for years used natural gas to extract the iron that then goes into its electric furnace. Europe’s Race to Secure New Energy Sources Is on a Knife’s Edge 2022-07-30T04:00:00Z “Global demand for electric furnaces is increasing as they emit less carbon than blast furnaces,” she told Reuters. S.Korea plans to manage steel scrap as strategic asset as prices surge 2022-06-09T04:00:00Z Instead of burning coal, steel mills could shift to electric furnaces that melt scrap. Stopping Climate Change Is Doable, but Time Is Short, U.N. Panel Warns 2022-04-04T04:00:00Z This is then melted in an electric furnace. ‘Green steel’ heating up in Sweden’s frozen north 2022-04-03T04:00:00Z Italian steel mills, likewise, turned off electric furnaces last week. Russia’s war idles some European mills as energy costs soar 2022-03-12T05:00:00Z A range of options are available to steelmakers, including using hydrogen, electric furnaces or carbon capture. Climate change: Tata Steel wants roadmap to make industry greener 2021-10-24T04:00:00Z “The demand for steel scrap, a key feedstock for electric furnaces, is growing in tandem. Managing it as a strategic material is part of our response.” S.Korea plans to manage steel scrap as strategic asset as prices surge 2022-06-09T04:00:00Z The venture would seek to buy the scrap materials in America and use electric furnaces and sustainably produced “green” hydrogen — instead of fossil fuels — to make the steel, becoming more competitive with producers in Asia. Whatcom County aluminum plant could get new owners and reopen 2021-10-20T04:00:00Z Additionally, several bodies were lined up to be cremated in the electric furnace. India Covid-19 second wave: Shortage of oxygen, beds and even cremation slots 2021-04-20T04:00:00Z Within the steel industry, rebar proved a boon to minimills, in which scrap is melted in small electric furnaces rather than in the enormous integrated mills used by major companies. Clayton Christensen, influential scholar of ‘disruptive innovation,’ dies at 67 2020-01-26T05:00:00Z Silicon is melted in electric furnaces and, at the moment, most electricity is produced by burning fossil fuels. How clean is solar power? 2016-12-08T05:00:00Z Nearly half the homes swapped an electric furnace for a heat pump and just over 40% replaced an aging heat pump. Novel Program Shaves Electricity Bills By 34% In South Carolina 2013-07-22T17:37:00Z The latter, which is CaC2, is made by heating coke and lime together in the intense heat of an electric furnace. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z In graphitizing en masse large lumps of anthracite are treated in the electric furnace. Encyclopaedia Britannica, 11th Edition, Volume 12, Slice 3 "Gordon, Lord George" to "Grasses" 2011-11-13T03:00:13.177Z He could prepare such a mixture with his electric furnace, he thought, and so make diamonds like those of the diamond mines. The Story of Great Inventions 2011-10-05T02:00:16.353Z Pure iron is mixed with carbon obtained from the calcination of sugar, and the whole is rapidly heated in a carbon crucible in an electric furnace, using a current of 700 amperes and 40 volts. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z In this article the general principles of metallurgical furnaces will be treated; the subject of gas- and oil-heated furnaces is treated in the article Fuel, and of the electric furnace in the article Electrometallurgy. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z But the question will arise in the reader's mind: Why is coke needed in an electric furnace? Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z For example, oxygen and nitrogen combine only under the influence of an electric spark, and carbon and calcium in the electric furnace. Encyclopaedia Britannica, 11th Edition, Volume 10, Slice 1 "Evangelical Church Conference" to "Fairbairn, Sir William" 2011-07-16T02:00:16.387Z In the electric furnace any substance, whether found in nature or prepared artificially, may be melted or vaporized. The Story of Great Inventions 2011-10-05T02:00:16.353Z In 1964, he started a company, I Squared R Element Company, which manufactures heating elements for electric furnaces. Hoping Third Party Is Charm, Industrialist Jolts House Race 2011-05-17T02:58:19Z The electric furnace has led to the discovery of several important materials, which have been employed as furnace linings. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The heat energy of the electric furnace is largely expended in forcing these two elements into partnership. Marvels of Scientific Invention An Interesting Account in Non-technical Language of the Invention of Guns, Torpedoes, Submarine Mines, Up-to-date Smelting, Freezing, Colour Photography, and many other recent Discoveries of Science 2011-11-19T03:00:24.517Z In this way electrodes are spoken of in connection with electric furnaces, electric welding appliances, vacuum tubes, and mercury vapour lamps, although the actions are not electrolytic. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z It was Henri Moissan, Professor of Chemistry at the Sorbonne in Paris, who made the first great discoveries in the use of the electric furnace and produced the first artificial diamonds. The Story of Great Inventions 2011-10-05T02:00:16.353Z To-day in the electric furnace one may see tons of incandescent steel swirling about like boiling milk in a saucepan. A Short History of the World 2011-03-04T03:01:03.147Z Siloxicon, a compound of carbon, silicon and oxygen, formed from carbon and silica in the electric furnace, was patented by E.G. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The temperature of the electric furnace, whether of the arc or incandescence type, is practically limited to that at which the least easily vaporized material available for electrodes is converted into vapour. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z This heating effect of the current is made use of in electric lighting, electric heating and cooking, in electric furnaces, and in certain electro-medical appliances. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z The electric furnace has made possible the preparation of substances unknown before, and the production in large quantities at low cost of substances that before were too costly for general use. The Story of Great Inventions 2011-10-05T02:00:16.353Z At the far end of the cave stood an urn-like contrivance which the girl took to be an electric furnace. The Secret Pact 2010-12-20T17:12:03.907Z An amorphous, soft silicon carbide, also formed in the electric furnace, was patented by B. Talbot in 1899. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z It is not necessary that all electric furnaces shall be run at these high temperatures; obviously, those of the incandescence or resistance type may be worked at any convenient temperature below the maximum. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z The production of refined steel, special alloy steels, and certain non-ferrous alloys is also carried out in electric furnaces of various types. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z That's more than an electric furnace generates heating the average American home for a year. Green Lantern: Environmental benefits of telecommuting are not universal 2010-09-07T04:00:00Z The colonel had some experimental mixture cooking in his electric furnace, and he invited us all down to the laboratory to see the result. The King of Arcadia "Oh yes, sir; his laboratory is up on the top floor—fitted up with an electric furnace and lots of funny appliances." Spies of the Kaiser Plotting the Downfall of England Borchers predicted that, at the high temperatures available with the electric furnace, every oxide would prove to be reducible by the action of carbon, and this prediction has in most instances been justified. Encyclopaedia Britannica, 11th Edition, Volume 9, Slice 2 "Ehud" to "Electroscope" 2011-01-29T03:00:23.777Z As a result of these demands, within four years the number of electric furnaces increased to over 100, the steel produced being over 200,000 tons per annum. The New Gresham Encyclopedia Volume 4, Part 2: Ebert to Estremadura 2011-04-14T02:00:56.200Z The introduction of the electric furnace into practical chemistry was followed by the preparation of many metallic carbides previously unknown, some of which, especially calcium carbide, are now of great commercial importance. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" There was a man from the War Department who sat across from me at my desk; my factories were being taken over; my electric furnaces must pour out molten metal for use in war. Astounding Stories, June, 1931 It is largely made as ferro-chrome, an alloy containing about 60-70% of chromium, by reducing chromite in the electric furnace or by aluminium. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 "Chitral" to "Cincinnati" The platinum is maintained at a bright red heat, either by a gas flame or by an electric furnace, and the vapour is passed over it by leading in a current of oxygen. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 1 "Châtelet" to "Chicago" The big stem that would have resisted all but electric furnace heat, and been cut through like a tallow candle in the blast of an oxy-acetylene flame. Two Thousand Miles Below It was first obtained accidentally in 1891 by Acheson in America, when he was experimenting with the electric furnace in the hope of producing artificial diamonds. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 3 "Capefigue" to "Carneades" The great top was set in a socket in a heavy bar of craolite, the new metal that combined the utmost tensile strength with complete infusibility, even in the electric furnace. Astounding Stories of Super-Science, November, 1930 Liquid air will boil on a cake of ice; it takes the intense heat of the electric furnace to boil melted iron. Common Science However, it is far in excess of any temperature which we can obtain here, even in the most powerful electric furnace. Astronomy of To-day A Popular Introduction in Non-Technical Language Minor uses are in chemical and enameling industries, in the smelting of copper, lead, and iron, and in the manufacture of the ferro-alloys in the electric furnace. The Economic Aspect of Geology The chief step in the production of the metal dates from the time that the mineral bauxite, a hydroxide of aluminium and iron, was decomposed in the electric furnace. Commercial Geography A Book for High Schools, Commercial Courses, and Business Colleges It is not unlikely that in the near future the electric furnace will furnish us with a number of products capable of replacing the diamond as abrading agents. On Laboratory Arts And you can't smelt aluminum ore in an ordinary furnace—only in an electric furnace with a generator that can supply a high amperage. Space Prison A traveling crane slowly hoisted the massive iron lid of the electric furnace. Tom Swift and His Giant Telescope Other important uses of bauxite are in the manufacture of artificial abrasives in the electric furnace, and in the preparation of alum, aluminum sulphate, and other chemicals which are used for water-purification, tanning, and dyeing. The Economic Aspect of Geology The others are all solids, though their melting points vary through wide limits, from cæsium which melts at 26° to elements which do not melt save in the intense heat of the electric furnace. An Elementary Study of Chemistry Even in the atoms of hydrogen at a temperature which we could produce in an electric furnace the electrons spin round at a rate of nearly a hundred trillion revolutions a second! The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told The fourth method of manufacturing steel is by the electric furnace. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel The chief source of calcium carbide in this country is the electric furnace. Artificial Light Its Influence upon Civilization Artificial diamonds of small size have been made in the electric furnace under high-pressure conditions not unlike those assumed to have been present in nature. The Economic Aspect of Geology Alloys with iron can be prepared by reducing the mixed oxides with carbon in an electric furnace; these alloys are used to some extent in preparing special kinds of steel. An Elementary Study of Chemistry The first American electric furnace, constructed by Robert Hare of Philadelphia. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries These furnaces are of various sizes and designs; their size may be sufficient for only 100 lb. of metal—on the other hand electric furnaces for making armor-plate steel will hold 40 tons of steel. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel But the elements, aluminum and oxygen, cling tenaciously to each other and only the electric furnace with its excessively high temperatures has been able to separate them on a large commercial scale. Artificial Light Its Influence upon Civilization Small but increasing amounts of steel are also made in the electric furnace; for the most part, however, this process is more expensive than the others, and it is used principally for special alloy steels. The Economic Aspect of Geology Similar alloys of iron with the other elements mentioned are made in an electric furnace by reducing the mixed oxides with carbon. An Elementary Study of Chemistry Bauxite is the ore from which is made the pure aluminum oxide used in the electric furnace for the production of metallic aluminum. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Oil, gas and coal or coke are most common but there is a steady growth of the use of electric furnaces. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel But calcium clings tightly to the other elements of its compounds and it has taken the electric furnace to bring it to submission. Artificial Light Its Influence upon Civilization Ferrosilicon of the higher grades is manufactured principally in electric furnaces at Niagara Falls. The Economic Aspect of Geology They can be prepared by the action of aluminium or magnesium on their oxides and in impure state by reduction with carbon in an electric furnace. An Elementary Study of Chemistry Besides its use in combining and separating different elements the electric furnace is able to change a single element into its various forms. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Only the electric furnace is able to produce the necessary heat and slags required to eliminate sulphur, and as a matter of fact the sulphur does not go until several other impurities have been eliminated. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel It is said that calcium carbide was discovered as a by-product of the electric furnace by accidentally throwing water upon the waste materials of a furnace process. Artificial Light Its Influence upon Civilization In 1892 it was discovered that lime and coal fused together in the intense heat of the electric furnace formed a crystalline, metallic-looking substance called calcium carbide. General Science It can be prepared, however, by reducing the oxide with aluminium powder or by the use of the electric furnace, with carbon as the reducing agent. An Elementary Study of Chemistry Calcium, magnesium and aluminum, common enough in their compounds, have only come into use as metals since the invention of the electric furnace. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Another type of electric furnace is shown in Figs. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel The electric furnaces are rectangular troughs built of fire brick, their internal dimensions being 60 in. Scientific American Supplement No. 822, October 3, 1891 Professor Henri Moissan, of Paris, went further, and by use of an electric furnace produced diamonds as large as a pinhead. The Diamond Master Phosphorus is now manufactured from bone ash or a pure mineral phosphate by heating the phosphate with sand and carbon in an electric furnace. An Elementary Study of Chemistry Two other young men from Ohio, Alfred and Eugene Cowles, with whom Hall was for a time associated, wore the first to develop the wide possibilities of the electric furnace on a commercial scale. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The Fire.—Gas and electric furnaces designed for high heats are now made for treating high-speed steels. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel "He would require an electric furnace and a hydraulic press," said he. With Links of Steel At one side an electric furnace was glowing with graphite crucibles subjected to terrific heat. The Air Trust Some industries depend upon electrolytic processes, while in others the electrical energy is used merely as a source of heat in electric furnaces. An Elementary Study of Chemistry Silicon from the electric furnace appears in the form of hard, glittering metallic crystals. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries It is believed that the results obtainable \\with the electric furnace would surpass any others; but the apparatus is expensive, and unless handled with intelligence would not last long. The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel Sir Humphry Davy was the first to observe the extraordinary fusing power of the voltaic arc, but Siemens first applied it to a practical purpose in his electric furnace. Heroes of the Telegraph When I started at Menlo, I had an electric furnace for welding rare metals that I did not know about very clearly. Edison, His Life and Inventions It is made by heating coke and sand, which is a form of silicon dioxide, in an electric furnace, the process being extensively carried on at Niagara Falls. An Elementary Study of Chemistry Another source of hydrogen originating with the electric furnace is "hydrolith," which consists of calcium hydride. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries In the manufacture of calcium carbide in the electric furnace, lime and anthracite of the highest possible degree of purity are employed. The Project Gutenberg Encyclopedia Volume 1 of 28 Materials flowed in endless streams, feeding electric furnaces, mills, machines; passing out to packing tables and thence to vast store rooms. City of Endless Night Doubtless the tint is due to the presence of some coloured metallic oxide or other compound which has escaped reduction in the electric furnace. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power In recent years electric furnaces have come into wide use in operations requiring a very high temperature. An Elementary Study of Chemistry Metallic calcium is prepared from lime in the electric furnace. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Calcium carbide, as formed in the electric furnace, is a beautiful crystalline semi-metallic solid, having a density of 2.22, and showing a fracture which is often shot with iridescent colours. The Project Gutenberg Encyclopedia Volume 1 of 28 It is the excessively high temperature attainable in the electric furnace that causes this combination and not any effect of the electricity other than the heat produced. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon Calcium carbide is only one particular specimen of a large number of similar metallic compounds, which can be prepared in the electric furnace, or otherwise. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power On ignition the double chloride is decomposed, leaving the platinum as a spongy metallic mass, which is melted in an electric furnace and rolled or hammered into the desired shape. An Elementary Study of Chemistry So the scope of the electric furnace reaches from the costly but comparatively valueless diamond to the cheap but indispensable steel. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Carborundum, a silicide of carbon, is a valuable substance produced by the action of the heat of an electric furnace on an intimate mixture of carbon and sand. Beacon Lights of History, Volume 14 The New Era; A Supplementary Volume, by Recent Writers, as Set Forth in the Preface and Table of Contents Carbide is prepared by fusing lime and carbon in the electric furnace under a heat in excess of 6,000 degrees Fahrenheit. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon The ammonia arises from the action of the water upon magnesium, aluminium, or possibly calcium nitride in the calcium carbide, which are bodies also produced in the electric furnace or as the carbide is cooling. Acetylene, the Principles of Its Generation and Use A Practical Handbook on the Production, Purification, and Subsequent Treatment of Acetylene for the Development of Light, Heat, and Power It melts in the oxyhydrogen blowpipe and in the electric furnace; it is harder than gold and is a good conductor of electricity. An Elementary Study of Chemistry And besides ordinary steel the electric furnace has given us alloys of iron with the once "rare metals" that have created a new science of metallurgy. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Artificial graphite is another product produced by the long-continued action of the heat of the electric furnace on carbon under certain conditions. Beacon Lights of History, Volume 14 The New Era; A Supplementary Volume, by Recent Writers, as Set Forth in the Preface and Table of Contents With the development of the modern electric furnace the possibility of calcium carbide as a commercial product became known. Oxy-Acetylene Welding and Cutting Electric, Forge and Thermit Welding together with related methods and materials used in metal working and the oxygen process for removal of carbon Carborundum is a crystalline silicon carbide formed in the electric furnace. The Radio Amateur's Hand Book They are very stable at high temperatures, and are usually made by heating the appropriate substances in an electric furnace. An Elementary Study of Chemistry The electric furnace enables the chemist to take his materials apart in the same way. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries These meteoric diamonds are very small; nevertheless, they are true diamonds, resembling in many ways the little black gems produced by Moissan's method with the aid of the electric furnace. Curiosities of the Sky The bell continued to ring and the light to glow, showing that whoever was there had actually started the electric furnace. The Dream Doctor Sir William Siemens was among the first to make an electric furnace heated by the arc, which fused and vapourised metallic ores, so that the metal could be extracted from them. The Story of Electricity Although it is a very difficultly fusible substance, yet in the electric furnace it can be made to melt and even boil. An Elementary Study of Chemistry The electric furnace was first employed on a large scale by the Cowles Electric Smelting and Aluminum Company at Cleveland in 1885. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Carborundum is another product of the electric furnace. The Age of Invention : a chronicle of mechanical conquest Kennedy had switched on the electric furnace, and from the various pieces of metal on the table selected several. The Dream Doctor Already the Pittsburg Reduction Company have begun to use the electricity in reducing aluminum from the mineral known as bauxite, an oxide of the metal, by means of the electric furnace. The Story of Electricity This substance is formed when coal and lime are heated together in an electric furnace. An Elementary Study of Chemistry In the development of the electric furnace America played a pioneer part. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries Another valuable product of the electric furnace was the calcium carbide first produced in 1892 by Thomas L. Wilson of Spray, North Carolina. The Age of Invention : a chronicle of mechanical conquest You see, down there I placed the couples of the thermopile beneath the electric furnace on the table. The Dream Doctor The charge is then tipped into the casting ladle and the part of the electric furnace is finished. The Story of Electricity "That's the electric furnace, sir," said Craig to me with an assumed deference, becoming a college professor explaining things to the son of a great financier. The Silent Bullet These electric furnaces produce two or three ounces of nitric acid for each kilowatt-hour of current consumed. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The commercial production of aluminum is due to the electric furnace and dates from 1886. The Age of Invention : a chronicle of mechanical conquest Kennedy was examining a little quartz-lined electric furnace, which was evidently used for heating soldering irons and other tools. The Dream Doctor Sufficient quantities of steel have been made in electric furnaces to permit of the determination of the quality of the product as well as the economy of the process. The Story of Electricity This man Poissan says he has discovered a way to make diamonds artificially out of pure carbon in an electric furnace. The Silent Bullet These heated together in the electric furnace form calcium carbide and this, as every automobilist knows, gives acetylene by contact with water. Creative Chemistry Descriptive of Recent Achievements in the Chemical Industries The dynamo brought into service not only light and power but heat; and the electric furnace in turn gave rise to several great metallurgical and chemical industries. The Age of Invention : a chronicle of mechanical conquest Thus Davy's experiment of fusing substances laid the foundation of the modern electric furnaces, which are of paramount importance in several great commercial industries. A History of Science — Volume 3 The application of heat to obtain this metal previous to the invention of the electric furnace could only be considered a laboratory problem and the expense involved did not permit of commercial application. The Story of Electricity I felt sure of it the moment I looked up Poissan and found that he was a manufacturer of electric furnaces. The Silent Bullet All about were scattered various pieces of apparatus, test tubes, alembics, retorts, flasks, and an electric furnace. Tom Swift Among the Fire Fighters, or, Battling with Flames from the Air The electric furnace at Niagara Falls has been able to produce still another combination in the form of siloxicon by heating carbon and silicon to a temperature slightly below that required to produce carborundum. The Story of Electricity The electric furnace enables various elements to be isolated, such. as silicon, sodium, and phosphorus, and when obtained in their pure state they find wide application. The Story of Electricity The electric furnaces at Niagara Falls have supplied many interesting electro-chemical processes. The Story of Electricity Of course there can be no doubt that by proper use the electric furnace will make small, almost microscopic diamonds. The Silent Bullet |
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