portion of the copper sulfide and sodium sulfide form an upper layer while the nickel sulfide still contaminated with some iron, precious metals, and copper sulfide remains in the lower level. The two layers are separated and the contaminated nickel sulfide layer is formed into impure anodes. These anodes are then placed in an electrolytic . Borates in lead recycling 2 of 5 .
20/04/2019· INTRODUCTION Nowadays, about 67% of the total worldwide crude steel production is made by a Basic Oxygen Steelmaking processing route which involves the following stages: BLAST FURNACE (BF) BASIC ...
matte is tapped to a level where the slagmatte interface layer is brought in to contact with the hearth, it also freezes onto the hearth, thereby decreasing the available furnace volume and changing the profile of the hearth • It contaminates the matte with chromium (as FeCr 2O 4). Spinel in furnace matte causes problems with slagmatte ...
Iron Making MM 321. 4 credits Source: IITM; Metallurgical and Materials Engineering Dept. Objectives of the course What are the raw materials for iron making Burden preparation Distribution of burden Physicalthermalchemical process in a blast furnace Layout of blast furnace Blast furnace products Alternate routes of iron making History of iron making Use of .
15/06/2018· As a result of smelting, two separate molten layers are formed at the bottom of the furnace. The upper layer consists of slag and is removed as a waste while the lower layer is called matte. It ...
Monday, August 4, 1975 MELTING PROCESS AT THE EAST HELENA PLANT INCOMING ' MATERIAL: Incoming concentrates and other material' are sampled carefully and unloaded from the railroad cars by means ...
The lower end of blast furnace has two openings for slag and copper matte. Fig: Blast Furnace for extraction of copper. Bassemerisation The molten matte is mixed with little silica and charged into a Bessemer converter. Lined internally by basic lining of CaO or MgO. Hot air is blown into the mixture which converts remaining FeS. To FeSiO 3. 2FeS + 3O 2 → 2FeO + 2SO 2 FeO + SiO 2 .
How slag and matte are removed from the blast furnace? 1. Answer. We need you to answer this question! If you know the answer to this question, please register to .
A "matte" layer forms in this step, containing most of the copper originating from the crude lead bullion and some other impurities as metal sulfides. The speiss and the matte are usually sold to copper smelters where they are refined for copper processing. The lead from the blast furnace, called lead bullion, then undergoes the drossing process. The bullion is agitated in kettles then .
15/05/2020· As a result of smelting, two separate layers are formed at the bottom of the furnace. The upper layer consists of slag and is removed as a waste. The lower layer of molten mass contains mostly cuprous sulphide and some traces of ferrous sulphide. It is called matte and is taken out from the taping hole at the bottom. 4) Bessemerisation. The molten matte from the blast furnace .
Process and apparatus for the continuous refining of blister copper Copper matte is processed to anode copper without oxidizing blister copper in an anode furnace. Copper matte, in either molten or solid form, is fed to a continuous copper converting furnace in... 11 : : Reducing and smelting furnace having filter layer In a process and an apparatus for the production of liquid .
Blast Furnace Tap Hole and Tapping of the Furnace . The operation of a blast furnace is a continuous process. The blast furnace continues to produce liquid iron (hot metal) and slag as long as it is in operation. 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 .
lead bullion; "speiss" and " matte," two distinct layers containing recovera ble quantities of copper and other metals; and blast furnace slag. The speiss and matte are sold t o operators of copper smelters for metals recovery, and the slag is stored and partially recycled. The bullion is drossed (agitated and cooled in a dross ing kettle) to remove lead and other metal oxides, which form a ...
In the meantime, nickel matte from the blast furnace operation is broken, crushed and ground in ball mills to 20 mesh. This material is then roasted to nickel oxide in oilfired 17feet diameter Herreschoff type furnaces with two hearths separated by an air gap. Ground nickel matte is fed through a hopper on to the top hearth which is kept at a low temperature; it then falls through .
The process adopted for the Canadian ores, which are poor in copper and nickel, consists in a preliminary roasting in heaps and smelting in a blast furnace in order to obtain a matte, which is then further smelted with a siliceous flux for a rich matte.
How are slag and matte removed from the blast furnace? We need you to answer this question! If you know the answer to this question, please register to .
matte zone slag discharge point furnace Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired Lifetime Application number US312092A Inventor Fritz O Herneryd Allan F Norro Erik O A Sundstrom Current .