Gunning automation to improve safety and quality of repairsScopri di
The hot gunning repair of refractories for converters, ladles, EAFs, RH-snorkels, etc., is a cost saving alternative to a shut down and renewal of the complete lining. This process
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The hot gunning repair of refractories for converters, ladles, EAFs, RH-snorkels, etc., is a cost saving alternative to a shut down and renewal of the complete lining. This process
14 feb 2018 STEELMAKING AND CASTING 75 MILLENNIUM STEEL 2011 a tap weight was commissioned in 2009. Currently, the plant comprises four 80t and one 160t
6 mar 2018 Stahlwerk Bous/Saar GmbH, part of the steel section in Georgsmarienhütte Holding, has successfully pursued this strategy over many years. More recently, working
In today’s steelmaking plants, basic refractory gunning mixes are essential for the efficient operation of steel producing units [1]. The optimal choice of raw materials, a well
For many years, the gunning procedure is used for the repair of refractory linings. In combination with a gunning manipulator furnaces, ladles or RHdegasser legs can be
6 feb 2018 There are two basic methods: dry and wet gunning. With dry gunning the material is discharged from the machine with a maximum of 5% moisture and then fed to
The methods of refractory repair by gunning, or spraying, are roughly divided into two types: dry and wet gunning, each of which has advantages and disadvantages. Figure 1
9 dic 2022 The hot gunning repair of refractories for converters, ladles, EAFs, RH-snorkels, etc., is a cost saving alternative to a shut down and renewal of the complete
The wet gunning method is available as a means for solving the mixing problem of dry gunning. Figure 2 shows the configuration of a wet gunning system. A water-kneaded
2 giu 2019 Guniting refractories are granular refractory mixtures designed for application with air placement guns. A variety of air guns are used to spray the mixes at high
Gunning the Converter: The gunning is done at the trunnion, charge pad and tap pad area of the converter. The method involved putting the gunning mass with the help of the shooter machine
The main reactions in MgO and C in MgO-C refractories are reduction of MgO by carbon and oxidation of aluminium dissolved in steel by carbon monoxide formed at the interface of steel and refractory. Reduction of MgO by C takes place according to the following equation: MgO C s Mg CO. ð þ s Þ ð Þ 1⁄4 ð Þ þ g g ð Þ.
27 ago 2017 Remove the sample from the mould , then air dry 24/48 hours at 21/29°C and after that put the sample in the stove at 105°C/110°C for 18 hours. Fire the sample to 55°C for hour till 815°C
14 mar 2024 5. Medium-sized coreless induction furnaces that use a variety of scrap steel as raw materials to make steel use Al2O3-MgO (about 10% MgO) refractory materials to achieve a long service life. 6. Medium-sized induction furnaces that use direct reduced iron balls as additives should use MgO-Al2O3-Cr2O3 (added chromium ore) refractory
Allied Mineral Products offers a range of refractory products designed to be installed using various gunning methods. These products range from durable, high-density materials to lightweight insulating products. The gunning material allows an easy and fast installation. Allied offers a full range of refractory products that can be installed
steel plant, which will continue to gain importance in the near future. The PCF of our products will be reevaluated and recalculated on a regular basis. Basic Gunning Mixes and Their Fundamental Properties In today\'s steelmaking plants, basic refractory gunning mixes are essential for the efficient operation of steel producing units
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13 gen 2015 Steel reoxidation in the tundish has a significant influence on the steel cleanliness and therefore on the mechanical properties of the final product. In the present work, the steel reoxidation by two types of gunning mass (GM), viz. magnesia- and alumina-based GM, and two types of tundish slag, viz. lime–alumina–silica and
If gunning is performed well, the consumption is in the range of 0,5 kg/t steel. Typically, gunning takes place after 6–8 treatments. For inspection and documentation of the wear pattern, it is possible to attach a camera on the manipulator (Fig. 16). Instead of the gunning lance, a watercooled camera is driven into the