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What is the function of slag hole in a cupola furnace

The slag is poured out of the cupola furnace through the tap hole into the slag pot, where it is left to cool down, and then stored at the waste facility or poured into water, forming the granulate which is also usually stored at dumps. The cupola slag may be processed applying the same methods as for the blast-furnace slag Clarification: Slag hole is a tapping hole in a cupola furnace. Through which slag generated during the melting process is tapped. 4. Incoming air pressure and quantity in cupola furnace are controlled by which of the following element The cupola tender observes the furnace through the sight glass or peep sight in the tuyeres. Slag will rise to the top of the pool of iron being formed. A slag hole, located higher up on the cylinder of the furnace, and usually to the rear or side of the tap hole, is opened to let the slag flow out A slag hole opening of about 30 to 35 mm diameter and a tap hole of about 25 mm diameter is provided. (ii) Firing of Cupola: A fire of wood is ignited on the sand bottom, when the wood burns well; coke is dumped on the bed well from top. Make sure that the coke begins to burn too

Slag Hole: It is present at the opposite side of the hole from which melted iron comes out.It is present near the elevated part of sand bed. This slag hole is used to remove slag formed on melted iron due to impurities. 5 What is the function of slag hole in a cupola furnace? a. to tap the slag generated. B. to generate the slag. c. to allow outflow of gases. d. all of the mentioned. Discussion. a. to tap the slag generated. explanation:-slag hole is a tapping hole in a. 22. Incoming air pressure and quantity in cupola furnace are controlled by which of the.

What is the function of slag hole in cupola furnace? A slag hole, located higher up on the cylinder of the furnace, and usually to the rear or side of the tap hole, is opened to let the slag flow out. The viscosity is low (with proper fluxing) and the red hot molten slag will flow easily. How much does a rotary kiln cost This set of Foundry Multiple Choice Questions & Answers (MCQs) focuses on Cupola Furnace. 1. Cupola is the best example for __________ furnace. Explanation: In the cupola, after the melting operation is done, the bottom doors swing out of the way and thus the contents of cupola drop down through the opening (formed) If an emergency shut is required, the furnace operator lowers the slag valve completely. This ac tion slows the flow of slag and the water-cooled elements then freeze the slag inside the tap-hole, effectively closing the furnace

Cupola Furnace Slag: Its Origin, Properties and

  1. Opposite & above the metal tapping hole, there is a slag hole where slag is trapped. Above the slag hole, there is a wind box which is connected to air blowers. Air enters to the cupola through the tuyeres. Above the charging platform, there is a charging hole through which charge is put into the cupola
  2. imum time loss. Fluxes are added in the charge to remove the oxides and other impurities present in the metal
  3. The hot metal and slag accumulate in the hearth of the furnace, but since there is a limit to the amount that can be accumulated before it interferes with the furnace operation, hot metal and slag must be removed from the furnace at regular intervals. The tap hole also known as iron notch, is used for tapping the hot metal from the furnace
  4. In most cupolas slag is drained from the slag hole at the back of furnace. When metal is melted completely the bottom bar is pulled sharply under the plates and bottom is dropped. All remaining slag, un-burned coke or molten metal drops from the furnace
  5. The cupola furnace is a melting device used to melt cast iron, bronze, and other alloying elements. It is mainly used to convert iron to cast iron. The Kapila furnace was first built in China during the period of the Warring States (403 -221 BCE)
  6. It is a function of the by melted iron falling fr om the cupola tap hole. the overall extraction of manganese may be increased if the tailings slag from furnace smelting of manganese is.

250+ TOP MCQs on Furnaces for Melting and Answer

This slag on molten material form a protective layer to prevent oxidizing environment inside cupola furnace. Metal parts and other alloying elements: Required metal parts and other alloying elements are provided into cupola furnace from charging hole Cupola Furnace is a melting device used to melt cast iron, Ni-resist iron, and some bronzes and It is used in Foundries. The cupola can be made of any size and the size of the cupola is measured in diameters which range from 1.5 to 13 feet Cupola furnace 2. Direct electric arc furnace 3. Electric induction furnace 4. Coke Fired- Pit type crucible furnace Slag hole 7. Charging door 8. Chimney or Stack. Function of shell in Cupola ? - outermost part of the furnace - made up of steel sheet and other parts of this furnace are present inside this shell 0:34 - Furnace Legs 0:40 - Sand Bed 0:45 - Slag Hole 0:52 - Tap Hole 1:02 - Charging Door 1:08 - Working of Cupola Furnace 1:48 - Combustion Zone 1:54 - Reducing Zone 2:08 - Melting Zone 2:14 - Preheating Zone # Cupola_Furnace # Casting # foundry # Working_of_Cupola_Furnace # Casting_Process # Mechanicalengineering # GATE # Manufacturing.

Cupola furnace - Wikipedi

  1. Above the metal tap hole, normally in a position opposite to it, is the slag hole through which the slag gener- ated during the melting process is tapped. Above the slag hole is the wind box which is connected to the air blowers supplying the requisite air at a given pressure and quantity. The air enters the cupola through the tuyeres
  2. The most basic difference between a blast furnace and a crucible is duration. A blast furnace operates continuously. Iron ore, limestone, and coke are charged into the top, and iron and slag are tapped off the bottom 24-7. Once they are operating,..
  3. foundry and items to be a cupola of a given diameter operated at its optimum cast. combustion rate will, therefore, depend upon the air: gas ratio Of course, a large slag gives the melting rate at the recommended blowing rate of air hole is necessary for a which is a function of the combustion of gaseous fuels. Th

Cupola Furnace: Structure, Operation and Zones Foundr

  1. g air pressure and quantity in cupola furnace are controlled by which of the following element? Which of the following chemical compound, is the most common flux added to the charge in a cupola furnace? For melting of cast iron, which of the following furnace is used
  2. Cupola is a melting furnace just like induction furnace which uses coke for melting. Basic chage for cupola consists of foundry coke layers and layers of pig iron, steel scrap, home returns and it is only used for melting . Where as blast furnace.
  3. a) Rotary furnace b) Cupola furnace c) Pit furnace d) Electric furnace Answer: b 39. Why is sand bed prepared for melting of metal in Cupola furnace? a) It provides a refractory bottom b) It soaks the moisture from the metal c) It conducts the heat faster and uniformly d) None of the mentioned Answer: a 40. What is the function of slag hole in.
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  5. Pressurized slag skimmer in two stages of operation (a) cupola tapped iron runs down the launder and slag accumulates in the well; (b) enough slag has gathered to depress the metal below the top of the tap hole and slag flows over the slag notch. The height H is a critical dimension. If too small, the head of metal in the spout will not resist.
  6. The Cupola Furnace Fundamentals course provides learners a comprehensive overview of the basic elements of a cupola. Using graphics and animations, users are able to learn more about the functions of the main furnace components, as well as the cupola's ancillary systems and assistive devices. The course also discusses the different instrumentation, fuels, and charge [

Cupola Furnace -Construction, Working and Applications

the furnace operator lowers the slag valve completely. This ac tion slows the flow of slag and the water-cooled elements then freeze the slag inside the tap-hole, effectively closing the furnace. The slag valve can be set up to close automatically in the event of a furnace trip s hould the specific operation warrant this action Cupola furnace slag differs from blast furnace slag in chemical composition; for example, cupola slag has a higher silica content and a lower calcium oxide content than blast furnace slag. While blast furnaces operate using a basic slag, cupola furnaces generally operate using an acid slag for the production of gray cast iron A slag cement mixture and process of making the same is disclosed. The slag cement mixture is composed of cupola slag and portland cement. The cupola slag is optionally ground granulated. One embodiment of the process includes rapidly quenching the slag by submersion into water or by spraying water onto it, and grinding the resulting product to achieve a fineness of at least 6,000 cm 2 /g

The cupola furnace is made of steel materials arranged in a a slag hole located above the tap hole. A spark/fume arrester hood is capped at the top of the stack. The internal diameter of the cupola is 380 mm and can function on different ratios of Normally, Low-strength. 2019-8-22 · Refractory materials are used to provide protection against molten iron and slag attack, particularly in the well, siphon box and tap hole (Figure 1). The demand on refractories in the cupola furnace is severe. Materials must withstand thermal, mechanical, and chemical attack. Since cupola downtime is costly, Get Pric hole area. Since this is a relatively small furnace with two closely spaced tap-holes, the problem of space was compounded. Figure 2 shows the slag tap-hole equipment, which comprises the following items: Slag tap-hole inner block SlagFloTM valve assembly Tap-hole faceplate Integrated valve guide Steel flange Figure 1. Zones and phenomena in the cupola furnace. Chemically, cupola is a continuous reactor. The iron mixes with CO from gases given off by the burning coke, melts, and carburizes. The melted iron drips through the burning coke bed, absorbing more carbon along the way. The third role played by coke is mechanical

Manufacturing Technology 1 solved Mcq's with PDF Download

Holes and spout for removal of molten metal and slag are provided near the bottom (hearth). Cupolas are usually supported on steel columns, and the bottom of the shell is often provided with drop-bottom doors so as to discharge debris at the end of the melt When the heat (meaning the metal in the furnace) is finished, the furnace is tilted and poured into a tap ladle through a tap hole or spout in the furnace side wall. After each heat, repairs to the bottom and slag line are made by shoveling in a refractory bottom patching material created by the flame, as well as inject the charge into the furnace. Holes were left in the brickwork for workers to dump barrows full of iron and flux into the furnace. Metal doors were installed at each hole to protect the men. (Backert 77) It is the function of the blast furnace to remove the oxygen from the iron and to slag-off the impurities Fig. 4 : Cupola Spout Slag Spout and Slag hole Slag formed during melting is taken out through a slag hole which is normally located at the rear side of the cupola. The height of the slag hole from the tap hole depends on whether the cupola is intermittently or continuously tapped. Between tap hole and slag hole the space is known as HEARTH

The Molten Steel is removed from the Furnace when the Steel is of the correct consistency, through the Tapping Hole. The Slag It consists of the impurities, that is most materials other than Iron and Carbon which were put into the Furnace at the start when the Furnace was being Charged The cupola takes the form of a water-cooled vertical cylinder. The charge consists of scrap metal and steel, alloying ingredients, limestone, and coal coke for fuel. As the coke is consumed, the charge drops and melts. The hot exhaust gasses rise up through the charge, pre-heating it and increasing the energy efficiency of the furnace Another step in the metal melting process involves removing the slag in the furnace through a tapping hole or door. Since the slag is lighter than molten iron, it remains atop the molten iron and can be raked or poured out of cupola furnaces through the slag hole located above the level of the molten iron Cupola furnace can apply to melt any ferrous, mostly used for iron melting with big volume. Statistically, 60% of iron casting is melt by a cupola. Its energy efficiency is also high, take account of about 40-70%. Electric Arc Furnaces. Electric arc furnace (EAF) is a furnace that uses energy of an electric arc to heat and melt the material

Rotary hearth furnace - Furnace repair service heating

The cupola bottom is hinged so that the furnace may be emptied by dropping the bottom doors. The cupola bottom itself is generally of molding sand rammed in place on top of the bottom doors. At the bottom in front is a top-hole and spout for the molten iron. At the rear and above the tap-hole level is a slag hole Working of Cupola Furnace Working of Cupola Furnace The hot exhaust gases rise up through the charge, preheating it. The charge is melted. As the material is consumed, additional charges can be added to the furnace. A continuous flow of iron emerges from the bottom of the furnace. The slag is removed from slag hole This paper presents the design of a fuzzy control system to manage the temperature of mini cupola furnaces. The melt of metals process described in chemical reactions occurring in cupola, was used to model and convert to a subsystem in Simulink. On

In metallurgy, a ladle is a vessel used to transport and pour out molten metals. Ladles are often used in foundries and range in size from small hand carried vessels that resemble a kitchen ladle and hold 20 kilograms (44 lb) to large steelmill ladles that hold up to 300 tonnes (330 tons). Many non-ferrous foundries also use ceramic crucibles for transporting and pouring molten metal and will. cupola melting furnace, US $ 50000 - 120000 / Set, Henan, China, New, Blast Furnace.Source from Henan Recycle Environmental Protection Equipment Co., Ltd. on Alibaba.com Prepare Cupola for charging chipping and doubling - prepare metal & slag spout; Tap hole and slag hole; sand bed; Lining of ladle. Cupola - construction - parts of cupola and their functions - cupola zones - calculation of melting capacity of cupola. 2

Cupola Furnace The Alternatives To Blast Furnace , Find Complete Details about Cupola Furnace The Alternatives To Blast Furnace,The Alternatives To Blast Furnace,Cupola Furnace,Blast Furnace from Supplier or Manufacturer-Henan Recycle Environmental Protection Equipment Co., Ltd Cupola Melting Furnace From Machine Manufacturers For Sale , Find Complete Details about Cupola Melting Furnace From Machine Manufacturers For Sale,Cupola Melting Furnace,Cupola Melting Furnace Manufacturers,Cupola Melting Furnace For Sale from Supplier or Manufacturer-Henan Recycle Environmental Protection Equipment Co., Ltd Tel:+86-755-29059861. Fax:+86-755-85279220. Mob/ Wechat :+86-13714200873. Whatsapp:+86-13714200873. E-mail: info@superbheater.com. Add: No8, Third Industrial Zone. cupolas to melt ferrous materials to pro­ vide hot metal suitable for various types of iron for castings. A cupola (l) may be simply described as a vertical shaft furnace into which iron, alloys, and fluxes are charged at the top and molten iron and slag are drawn off at the bottom. The shaft is partiall

The function which the cinder notch performs in the process covered by Vinton's invention is precisely the same for which it is used in a blast furnace. In smelting slag in a cupola furnace, it was found that the molten cinder accumulated and floated on the top of the molten iron Between, Mine, Forest, and Foundry: An Archaeological Study of the West Point Foundry Blast Furnace, Cold Spring, New York By T. Arron Kotlensky Steelmaking and Refining Volume AISE 199 The cupola furnace for producing molten silica for producing light-coloured fibres of mineral wool includes feeding into the cupola furnace at least two different types of briquettes having a different composition in which chemical components are matched at the expected content of iron, wherein components from Al 2 O 3 in the briquettes serve.

• On the rear of the tap hole is a slag hole to drain out slag. It is about 50 to 150 mm above the level of the tap hole. This height decides the amount of metal that can be stored in the cupola between taps. • This height may be less if the cupola is fitted with a receiver and the metal is continuously drained from the cupola The function which the cinder notch performs in the process covered by Vinton's invention is precisely the same for which it is used in a blast furnace. In smelting slag in a cupola furnace it was found that the molten cinder accumulated and floated on the top of the molten iron

Cupola Furnace - Foundry Questions and Answers - Sanfoundr

Car Battery Lead Melting Cupola Furnace Made In China For Sale , Find Complete Details about Car Battery Lead Melting Cupola Furnace Made In China For Sale,Lead Melting Cupola Furnace,Car Battery Lead Melting Furnace,Cupola Furnace Made In China from Supplier or Manufacturer-Henan Recycle Environmental Protection Equipment Co., Ltd furnace/cupola furnace to the forehearth, temperature is typi - cally measured at irregular intervals by means of a thermo-Fig. 3 Measurement at the tap hole of a blast furnace, carried out at considerable distance Fig. 4 Transfer of molten iron from the melting furnace into the pouring ladl

This option allows the breaker to function in red-hot applications with ambient temperatures in excess of 392 degrees Fahrenheit (200 degrees Celsius), making it ideal for cleaning slag around ladles and copper converters. For tap hole cleanouts, cupola bottom drops and similar tasks, longer bits help keep equipment farther from falling debris. Cupola-horno A Altas Temperaturas , Find Complete Details about Cupola-horno A Altas Temperaturas,The Alternatives To Blast Furnace,Cupola Furnace,Blast Furnace from Supplier or Manufacturer-Henan Recycle Environmental Protection Equipment Co., Ltd

Video: Cupola Furnace Diagram and Working Of Cupol

The furnace is mounted on a tilting mechanism for tapping the molten steel through a tap hole with a pour spout located on the back side of the shell. The charge door, through which the slag components and alloying additives are charged, is located on the front side of the furnace shell View Notes - Metal Casting Process from MECHANICAL ME 2202 at Hindustan University. Metal Casting is a manufacturing process where liquid metal is poured into a preformed cavity made up of refractor blast furnace manufacturer/supplier, China blast furnace manufacturer & factory list, find qualified Chinese blast furnace manufacturers, suppliers, factories, exporters & wholesalers quickly on Made-in-China.com Refractories and its benefits - Tap Hole Clay & 2020-8-7 · Refractory castable is an unshaped refractory. Then it is made from refractory aggregate, powder and binder and admixture through batching and mixing. The castable used for refractory castable are also different because of different aggregate and binder. Get Pric The liquid slag flows into slag pots (25) or into slag pits (not shown) and the liquid iron flows into refractory lined ladles (26) known as torpedo cars or sub cars due to their shape. When the liquids in the furnace are drained down to taphole level, some of the blast from the tuyeres causes the taphole to spit