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    Home > Active Ingredient News > Drugs Articles > Analysis of technical data of coal gangue two-stage pulverizer

    Analysis of technical data of coal gangue two-stage pulverizer

    • Last Update: 2013-04-27
    • Source: Internet
    • Author: User
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    The coal gangue crusher is to treat the gangue in the excavated coal block by the crusher (also known as two-stage crusher) to become the combustion supporting additive suitable for the application in building brick making The crushed coal gangue can be used as the additive and internal fuel in brick factory, which can play a good role in the application of environmental protection brick, and it is used in metallurgy, cement, refractory, coal, construction industry and other departments There are five defects that may occur when the hammer of the coal gangue crusher is heated: 1 The surface of the hammer of the coal gangue crusher is easy to oxidize and form oxide skin The oxide skin not only makes the hammer head loss (the loss of each heating accounts for about 1% ~ 3% of the total weight of steel), but also reduces the surface quality and accelerates the wear of abrasive tools 2 During decarbonization heating, the carbon on the surface of the hammer head of the gangue crusher is oxidized and burned, which is called decarbonization Decarburization results in the hardness, strength and wear resistance of hammerhead material The depth of decarburization layer just now is not allowed to exceed the machining allowance 3 The overheated heating temperature exceeds the temperature range allowed by the process specification, which causes the internal structure of the hammer metal of the gangue crusher to be coarse, which is called overheated The mechanical properties of steel with overheated structure not only decrease, but also change 4 When the overheated metal is heated in a high temperature for a long time, the oxygen in the furnace gas will permeate into the internal structure of the metal, causing the oxidation of the grain boundary and the melting of the impurities with low melting point on the grain boundary, destroying the binding force between the metal atoms, resulting in cracks in the forging process This phenomenon is called overburning 5 The causes of cracks are too high heating temperature, too fast heating speed and improper charging If the heating speed is too fast or the charging temperature is too high, because the temperature difference between the surface and the inside of the steel is too large, great internal stress will be generated, which will lead to cracks Therefore, this kind of steel must be slowly heated or preheated first Features: 1 The coal gangue crusher can rotate in two directions, and the hammer head and the grinding gear plate can be evenly worn through continuous two-way operation of equal shifts, reducing the frequency of stopping and replacing vulnerable parts Double rotor up and down two-stage grinding, material grinding more thorough 2 It is suitable for the fine crushing of brittle materials without blocking, less dust and low noise 3 The coal gangue crusher shortens the retention time of materials in the crushing chamber, and improves the service life of vulnerable parts 4 The hydraulic and electric starting shell is safe, light and convenient The installation is convenient, which greatly improves the degree of freedom of the equipment; the side door on the upper side of the gangue crusher can be opened freely, so that the maintenance of the crusher and the replacement of vulnerable parts become more quick and convenient.
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