The sequence of blast furnace blow in process is

The person whoever has written this blog seems to be an expert in the niche, for knowing anything regarding the fume extraction system in India then reach out to the team available at clear Ion. We also provide the on-gun Fume Extraction System.

Application of AI techniques to blast furnace operations. It was during the first stages of application of artificial intelligence AI to industrial fields, that the ironmaking division of Mizushima works at Kawasaki Steel recognized its potential. Since that time, the division has sought applications for these techniques to solve various problems. AI techniques applied to control the No. Experience of AI to control the blast furnace and other ironmaking operations has proved its capability for achieving automation and increased operating efficiency.

The sequence of blast furnace blow in process is

A blast furnace, after it is blown in and the production of hot metal starts, runs for a large number of years before it is put down for relining. This continuous run of the blast furnace is known as campaign life. In modern blast furnaces a campaign life of 15 years to 20 years is expected. The various types of shut downs of a blast furnace are described below. Fig 1. Fig 1 Important methods of shutting down a blast furnace. Very often while running of the blast furnace, a situation can arise when the full productive capacity of the furnace is not required for a period of time. This can be due to some problems which may arise in downstream or upstream facilities. When this occurs, the problem can be solved either by the shutting the blast furnace down or curtailing the operation of the blast furnace by reducing the quantity of hot blast. The hot blast rate is usually reduced until the hot blast pressure at the tuyeres is very low. However, it is a must that a positive pressure is kept in the hot blast system to assure that there is no danger of blast furnace gas coming back from the blast furnace into the blower system. Fanning has the advantages of keeping the blast furnace gas system pressurized and furnishing a small quantity of blast furnace gas for use as fuel, and enables a resumption of near full operation on relatively short notice.

Silica Fume and Sika 10 superplasticizer havemore » been added as 1 and 10 weight percent of slag. Castings were the most profitable product, especially the popular Hopewell Stove. In studying a charging program and its resulting burden distribution, the mixed layers of coke and pellets were found to show lower voidage than the individual burden layers.

I am this author. It has got four hot stoves operating in an automatic sequence. The hot stoves are responsible to regenerate the blast furnace gas enthalpy energy, heating the refractory in the gas cycle, and blowing the hot blast into the blast furnace in the blast cycle. Thus, the blowing temperature in the ring off wind inside the blast furnace can be controlled. The main hot stove equipments are the hot blast valves, the air and combustion gas control valves, shut-off valves, refractory, refractory chamber, expansion joints, flow, pressure and temperature transmitters, plus the PLC, which is responsible for control.

A blast furnace is a steel cylinder lined with refractory. It operates continuously until the lining wears out, which takes many years to occur. Charge solid iron ore, coke, and limestone is constantly dumped into the top of the furnace. Coke is the fuel that supplies additional heat, increasing the temperature of the charge. Chemical reactions occur: coke reacts with oxygen from the air, creating the reducing agent carbon monoxide , which removes oxygen from the ore. Limestone reacts with impurities in the furnace, forming slag, which floats to the top of the furnace vessel. Blast Furnace Process. Molten iron is produced in a blast furnace by the following steps: 1.

The sequence of blast furnace blow in process is

In the blast furnace, the iron ore reacts with the carbon contained in the coke to form grey or white pig iron. The iron in the processed ores must be dissolved out by chemical processes. This requires an element that binds oxygen more strongly than iron. This is exactly what carbon can do as a reducing agent. The carbon is fed to the blast furnace in the form of coke pyrolyzed coal from the coking plant. At sufficiently high temperatures, the carbon can participate directly in the reduction of the iron direct reduction. At lower temperatures, the reduction takes place indirectly with the help of the carbon monoxide gas formed during combustion indirect reduction. In both cases the iron oxide is reduced to iron. The use of carbon as a reducing agent is not only due to its high availability but as a gaseous substance carbon monoxide has the advantage that it can penetrate the porous ores well and react with the iron oxides.

Draco malfoy fanfiction

According to the analysis on many experimental results, the oxidation process of carbon composite bricks under different temperatures were controlled by different mechanisms. Furnace linings, previously made of sandstone, had largely changed to brick, and would often be separated from the outer body of the hearth by a layer of sand. This sulfur removing reaction is:. Adjusting the material ratio obtains different cementing material which could satisfy requirements of different mined-out areas. Finally, I wish to point out the great difference of opinion which exists between different engineers on the question of blowing equipment for furnaces. The limestone descends in the blast furnace and remains a solid while going through its first reaction as follows:. In this paper, a novel data-driven robust modeling is proposed for online estimation of MIQ using improved random vector functional-link networks RVFLNs. The mechanical efficiency of a reciprocating compressor is probably higher than that of any other reciprocating apparatus because of the way in which the inertia of the reciprocating parts can be used to balance the changes in pressure in the steam and air ends. Prior to the last casting, the blast furnace dust catcher is emptied. A few blow-in operators claim that improved warm-up is achieved through this technique. Batch study revealed that rising pH increased the adsorption of all metals with an abrupt increase at pH 4. The additives and fluxes serve to convert the waste or gangue materials in the charge [mainly silica and alumina] into a low melting point slag which also dissolves the coke ash and removes sulphur.

The process of starting a blast furnace after its construction or after its relining is called blowing-in. The blowing-in process is carried out in several steps Fig 1 which consist of i drying out the lining, ii filling of the blast furnace with a specially arranged high coke blow-in furnace charge, iii igniting of the coke or lighting of the blast furnace, and iv gradually increasing the hot blast wind rate with frequent castings to ensure the raising of temperature of the blast furnace hearth.

The various types of shut downs of a blast furnace are described below. The possibility of using waste plastics as a source of secondary fuel in a blast furnace has been of recent interest. Teaching with Historic Places. However, the additional charges of quartzite lumps are very effective in keeping top temperature low. In the US, Pennsylvania anthracite coal became a popular fuel for blast furnaces, and was primary fuel for US blast furnaces until the end of the 19th century. The paper describes the central system. The question of wear of the reciprocating engine compared to that of the turbo blower has been brought up. Experiments were conducted to solve the identified problems and results are furnished in detail. The output of the industry probably peaked about , and was followed by a slow decline until the early 18th century. With each charge of the material from skip or conveyor, the small bell and hopper rotates to a selected position before the material is discharged.