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Furnace - LoveToKnow 1911 Blast furnaces are, from the intimate contact between the burden to be smelted and the fuel, the least wasteful of heat; but their use supposes the possibility of obtaining fuel of good quality and free from sulphur or other substances likely to deteriorate the metal produced. Furnaces of the second kind were first used in alkali works for the conversion of sulphate into carbonate of sodium in the process known as fl ash fusion, but have since been applied to other processes. Furnaces of this kind may be used for melting cast iron or bronze in small quantities, and were employed by H. Sainte Claire Deville in experiments in the metallurgy of the platinum group of metals. www.1911encyclopedia.org /Furnace   (3883 words)

EPA: Federal Register: National Emission Standards for Hazardous Air Pollutants From Secondary Lead Smelting   (Site not responding. Last check: 2007-11-02) The THC standard for a collocated blast furnace and reverberatory furnace is based on commingling the high-volume, high-temperature (approximately 1000 deg.C) reverberatory exhaust with the low-volume, low-temperature (approximately 100 deg.C) blast furnace exhaust to incinerate the organic HAP in the blast furnace exhaust. Collocated blast furnace and reverberatory furnace means operation at the same location of a blast furnace and a reverberatory furnace with the volumetric flow rate discharged from the blast furnace being at equal to or less than that discharged from the reverberatory furnace. Reverberatory furnace means a refractory-lined furnace that uses one or more flames to heat the walls and roof of the furnace and lead- bearing scrap to such a temperature (greater than 980 deg.C) that lead compounds are chemically reduced to elemental lead metal. www.epa.gov /fedrgstr/EPA-AIR/1997/June/Day-13/a15570.htm   (11707 words)

furnace - HighBeam Encyclopedia In the hot-air furnace, fuel is burned within an inner wall and air, led into a space between the inner and the outer wall, is heated and is led away to the various rooms of the building. Hot-water furnaces, by which water is heated to be led through pipes to radiators, and furnaces that turn water to steam for heating purposes are common. In metallurgy, the separation of many metals from their ores is accomplished by the use of various kinds of furnaces, e.g., the blast furnace and the reverberatory furnace. www.encyclopedia.com /doc/1E1-furnace.html   (573 words)

Welcome to the Clean Air Act Information Network Reverberatory furnaces are rectangular, refractory- lined furnaces that use natural gas- or propane-fired jets to heat the walls and roof of the furnace and the charge materials. Reverberatory furnaces are used to produce soft (nearly pure) or semi-soft lead by reducing lead compounds to metallic form, but at the same time oxidizing the alloying elements so that they are removed in the slag. All smelting furnaces are equipped with chimneys, flues, or ductwork that convey exhaust gases from the furnace. envinfo.com /caain/mact/pbpream.html   (20218 words)

Welcome to the Clean Air Act Information Network Electric furnace means a smelting furnace consisting of a vessel into which reverberatory furnace slag is introduced and that uses electrical energy to heat the reverberatory furnace slag to such a temperature that lead compounds are reduced to elemental lead metal. Reverberatory furnace means a fixed refractory-lined furnace that uses one or more flames to heat the walls and roof of the furnace and lead-bearing scrap to such a temperature that lead compounds are chemically reduced to elemental lead metal. Rotary furnace (also known as a rotary reverberatory furnace) means a furnace consisting of a refractory-lined chamber that rotates about a horizontal axis and that uses one or more flames to heat the walls of the furnace and lead-bearing scrap to such a temperature that lead compounds are chemically reduced to elemental lead metal. envinfo.com /caain/mact/pbreg.html   (3372 words)

Reverberatory furnace - Wikipedia, the free encyclopedia A reverberatory furnace is a metallurgical or process furnace that isolates the material being processed from contact with the fuel, but not from contact with combustion gases. The first reverberatory furnaces were perhaps in the medieval period, and were used for melting bronze for casting bells. The puddling furnace, introduced by Henry Cort in the 1780s to replace the older finery process, was also a variety of reverberatory furnace. en.wikipedia.org /wiki/Reverberatory_furnace   (594 words)

Lateral Science - Getting Gold - Chapter 8 One disadvantage of the reverberatory furnace is the fact that it is impossible to avoid the incursion of air during the manual rabbling action, and this tends to cool the furnace. The furnace is fired with coal on a grated hearth, built at the lower end; it is more economical both in fuel and in labour than an ordinary reverberatory furnace. In one form of this furnace, instead of allowing the ore to descend in a direct clear fall the descent is impeded by inclined planes placed at different levels in the height of the shaft, the ore descending from one plane to the other. www.lateralscience.co.uk /gold/gg8.html   (2599 words)

Astro-Tel - Gas Fired Furnace It was necessary to set this furnace up in a different position and I had to get the gas supply company to move the gas meter. The drawings of this furnace were lost long ago and the furnace was scrapped a few years ago so I do not have detailed dimensions However Fig. Reference to the drawing stows how simple the burner is. I would light the furnace up at 12 o'clock and turn the gas and air down, direct the flame at the bottom of the well and draw the flame out to pass up the flue This is to preheat the furnace. www.turbofast.com.au /astrotel/furnace1.html   (807 words)

63.542 Definitions. Agglomerating furnace means a furnace used to melt into a solid mass flue dust that is collected from a baghouse. Electric furnace means a smelting furnace consisting of a vessel into which reverberatory furnace slag is introduced and that uses electrical energy to heat the reverberatory furnace slag to such a temperature (greater than 980 °C) that lead compounds are reduced to elemental lead metal. Reverberatory furnace means a refractory-lined furnace that uses one or more flames to heat the walls and roof of the furnace and lead-bearing scrap to such a temperature (greater than 980 °C) that lead compounds are chemically reduced to elemental lead metal. www.setonresourcecenter.com /cfr/40CFR/P63A_291.HTM   (957 words)

Furnace - Wikipedia, the free encyclopedia By comparison, most modern "warm air" furnaces typically use a fan to circulate air to the rooms of house and pull cooler air back to the furnace for reheating; this is called forced-air heat. At the furnace, cool air passes into the furnace, usually through an air filter, through the blower, then through the heat exchanger of the furnace, whence it is blown throughout the building. A symptom of this failure is that the furnace repeatedly shuts down before the house reaches the desired temperature; this is commonly referred to as the furnace "riding the high limit switch". en.wikipedia.org /wiki/Furnace   (2113 words)

[No title] Electric furnace means a smelting furnace consisting of a vessel into which reverberatory furnace slag is introduced and that uses electrical energy to heat the reverberatory furnace slag to such a temperature (greater than 980 ADVANCE \U 2.85oADVANCE \D 2.85C) that lead compounds are reduced to elemental lead metal. Furnace and refining/casting area means any area of a secondary lead smelter in which: (1) smelting furnaces are located; or (2) refining operations occur; or (3) casting operations occur. Reverberatory furnace means a refractory-lined furnace that uses one or more flames to heat the walls and roof of the furnace and lead-bearing scrap to such a temperature (greater than 980 ADVANCE \U 2.85oADVANCE \D 2.85C) that lead compounds are chemically reduced to elemental lead metal. www.dep.state.fl.us /air/permitting/writertools/t3neshap/X.doc   (12499 words)

Plasma products for material processing - One Atmosphere Plasma Beam In the case of dry hearth reverberatory furnaces, scrap and/ or ingot is placed in a “dry” sloped hearth where the melted metal continuously runs off into the holding chamber. Basin type reverberatory furnaces are usually used in foundries with medium to low production levels, and are generally designed for melt loads of 300 to 1000 lb., but can be designed for heat sizes in excess of 20 tons. In radiant rod furnaces, electric currents of 4000 to 5000 amperes are commonly used to heat graphite or silicon carbide resistance elements which radiate to the furnace load and walls (note however as described above such elements are not the most optimal). www.bayzi.com /one/benefits.html   (2100 words)

Lead Scrap Melting Furnace   (Site not responding. Last check: 2007-11-02) Furnace is a kind of equipment that is used in process of smelting. The melting furnace has been designed for smelting small size lump scrap of iron, steel, aluminum, any nonferrous metals and waste metal shavings covered with oil or grinding slurry without preliminary cleaning and briquetting. Lead fume and dust may be emitted from the reverberatory furnace if the furnace is run at positive pressure or if bridging occurs during charging wet materials. www.gravitaexim.com /Lead-Scrap/lead-scrap-melting-furnace.html   (522 words)

Lead: Secondary Lead Smelter eTool: Smelting - Reverberatory Furnace Water should not be used for dust suppression in the smelting area due to the possibility of oxide fires and the mixing of water and molten lead. Reverberatory furnace lead tap with local exhaust ventilation Reverberatory furnace tapping operations involve pouring the molten lead and slag from the furnace into molds or ladles. www.osha.gov /SLTC/etools/leadsmelter/smelting/reverbfurnace.html   (437 words)

Chapter Improvements in glass manufacture of Autobiography by Sir Henry Bessemer The immense economy, in time, consumption of fuel, and cost of large melting-pots, resulting from the fusion of glass on the open hearth of a reverberatory furnace was accompanied by one great disadvantage, viz., the tendency of molten matter to fall from the roof of the furnace into the bath, and thus spoil the glass. It was found that whenever the underside of the furnace roof was exposed to an excessively high temperature, the alkaline vapours from the bath beneath caused a fusion of the brickwork, and tears, with their long tails, would fall slowly from above and discolour the glass in the bath beneath. It is now just forty-nine years since I succeeded in fusing the materials used in the manufacture of glass on the open hearth of a reverberatory furnace, in about one-third the time and with one-third the fuel required for its fusion in the large and expensive glass pots then in use. www.bibliomania.com /2/9/71/118/21367/5.html   (670 words)

Copper - Reverberatory Furnace It is heated to 1100 C. The combustion with oxygen is endothermic, and chalcopyrite is actually the fuel that keeps the furnace hot at that point. The molten copper(I) sulfide, called copper matte, is run into a converter furnace, where air containing oxygen is blown through the copper matte to oxidize the sulfide ions to sulfur dioxide. A final heating in an anode furnace is used to burn off the remaining oxygen. www.elmhurst.edu /~chm/onlcourse/chm110/outlines/copper.html   (573 words)

Statute: § 63.542 Definitions. Electric furnace means a smelting furnace consisting of a vessel into which reverberatory furnace slag is introduced and that uses electrical energy to heat the reverberatory furnace slag to such a temperature (greater than 980 [degrees] C) that lead compounds are reduced to elemental lead metal. Reverberatory furnace means a refractory-lined furnace that uses one or more flames to heat the walls and roof of the furnace and lead-bearing scrap to such a temperature (greater than 980 [degrees] C) that lead compounds are chemically reduced to elemental lead metal. Smelting means the chemical reduction of lead compounds to elemental lead or lead alloys through processing in high-temperature (greater than 980 [degrees] C) furnaces including, but not limited to, blast furnaces, reverberatory furnaces, rotary furnaces, and electric furnaces. www.arb.ca.gov /bluebook/bb05/40cfr/40cfr63_542.htm   (985 words)

A BRITISH TIN SLAG MYSTERY: BLAST OR REVERBERATORY FURNACE?   (Site not responding. Last check: 2007-11-02) Cassiterite, extracted from stream deposits or from local granite in the counties of Devon and Cornwall, was smelted in either a blast furnace or a reverberatory furnace to create pure metallic tin. In general, blast furnace slags are smaller in size and tend to exhibit ropy macroscopic features due to formation from highly viscous melts. Reverberatory slags, in contrast, rarely contain zircon, but often feature small prills of metallic iron or pyrite. gsa.confex.com /gsa/2001AM/finalprogram/abstract_27111.htm   (501 words)

furnace — FactMonster.com In metallurgy, the separation of many metals from their ores is accomplished by the use of various kinds of furnaces, e.g., the , however, the open-hearth furnace and the Bessemer converter are used in the treatment of cast iron. blast furnace - blast furnace, structure used chiefly in smelting. www.factmonster.com /ce6/sci/A0819902.html   (443 words)

Furnace manufacturers, suppliers, exporters of Furnace Manufacturing industrial furances such as electric furnaces, gas furnaces, oil furnace, muffle type furnaces, bogie hearth furnaces, bell annealing furnaces, reverbatory melting and holding furnaces, batch type forging furnaces and salt bath furnaces. Suppliers of induction furnaces, medium frequency induction furnace, brazing units, induction heating equipments, induction hardening equipment and bearing heater used in the application of automated foundries and steel plants. Manufacturing industrial furnace like rotary furnace, skelner furnace, melting cum holding furnace, reverberatory furnace, billet reheating furnace, bojie hearth furnace, forging furnace, electrical furnace, heat furnace and mesh belt continuous furnace. www.indiandata.com /furnance/furnance2.html   (702 words)

Reverberatory Furnace Now, that's the basic idea of any furnace but without a crucible to take up space or heat, it's more efficient. Only thing more efficient I would say is a cupola, but those aren't as easy to operate. Reverberatory furnaces have melted everything from bronze, aluminum and glass to lead, iron, copper ore and have even made steel automatically. www.abymc.com /tmoranwms/Casting_Reverb.html   (646 words)

Cast Metals Coalition The following are hypothetical examples of energy-saving metrics estimates, which illustrate the use of the data spreadsheet and the estimating principles described above. To supplement the spreadsheet data, an investigation is needed to determine the share of gas reverberatory furnaces in each process segment. The subtlety here is the fact that “revert reduction” (see footnote 5) covers an entire alloy/process segment of the industry; whereas, a melting furnace efficiency improvement covers only the sub-segment of industry which uses that melting furnace type. cmc.aticorp.org /examples.html   (1781 words)

MPH VALCA Autoladle® (via CobWeb/3.1 planetlab2.cs.unc.edu)   (Site not responding. Last check: 2007-11-02) MPH Aluminum Dry Hearth Two-Chamber Melting and Holding Reverbatory Furnace Aluminum Dry Hearth Two-Chamber Melting and Holding Furnace Specifications and Product Information is subject to change without notice. www.bluem.com.cob-web.org:8888 /mph/dry-hearth-holding-reverbatory-furnace.asp   (130 words)

Lead Reverberatory Furnace The plant has an oversized collector, of which only half is used at a time. GORE-TEX® membrane/GORE-TEX fabric filter bags were installed in the lead reverberatory collector. After the GORE-TEX membrane/GORE-TEX fabric filter bags were installed, bag life increased from one year to five years. www.gore.com /en_xx/products/filtration/baghouse/filtration_me_24.html   (159 words)

Reverberatory Furnace Application Guide - American Precast Refractories Reverberatory Furnace Application Guide - American Precast Refractories In molten aluminum contact areas shapes generally are made with higher alumina, high strength non-wetting refractories such as QUICK CAST®, MATRIPUMP, MATRICAST, or MATRIFLO lines. Contact Us Send questions or comments about this web site to the Webmaster www.amprecast.com /products/reverberatoryfurnace.htm   (78 words)

New Reverberatory Furnace   (Site not responding. Last check: 2007-11-02) That claw digging tool works wonders mixing refractory! Here's the furnace, all finished and setting up. It goes in more like cement than molding sand; you don't compress it in, you vibrate and push it. www.abymc.com /tmoranwms/Casting_Rvb.html   (215 words)

Watry Industries, Inc. - Equipment   (Site not responding. Last check: 2007-11-02) Solution (T6) Furnaces, Electric, 1000 degrees F., 4,000 lb. Solution (T6) Furnace, Electric, 1000 degrees F., 1,200 lb. DAHLIH MCV-1350 CNC Vertical Machining Center with automatic tool changer, 24 tool magazine www.watry.com /pages/equipment.html   (798 words)

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