Method for preparing graphitized carbon from anthracite
A technology of graphitization and anthracite, applied in chemical instruments and methods, inorganic chemistry, carbon compounds, etc., can solve the problems of prolonging the preparation time, increasing the cost of graphite carbonization, and consuming energy consumption, so as to reduce energy consumption and preparation cost , the effect of reducing energy consumption
Active Publication Date: 2020-09-18
淮北天澈碳基新材料科技有限公司
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Problems solved by technology
[0004]
Among them, in the preparation of graphite carbide, the drying process is often carried out by the high-temperature flue gas produced by burning coal powder, which consumes a lot of energy, so that the cost of preparing graphite carbide also increases. , Secondly, in terms of cooling, it can only be cooled down by a long time cooling equipment, which also prolongs the preparation time
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experiment example 1
[0027] In the present invention, unless otherwise specified, the raw materials and equipment used can be purchased from the market or commonly used in this field. The methods in the following examples, unless otherwise specified, are conventional methods in the art.
[0028] 1. the anthracite among the present invention adopts the anthracite particle that the coal washing plant has cleaned to contain ash below 11%, water content below 8%, particle size 0.5-15mm, and the anthracite particle that is less than 6mm through sieving machine screening.
[0029] 2. In the present invention, the qualified dense medium suspension is placed in a medium bucket for storage, and the dense medium suspension includes ferric oxide and medium water.
[0030] Such as figure 1 As shown, a method for preparing graphitized carbon from anthracite, the anthracite is obtained through a dense medium swirling process to obtain clean coal, on the one hand, the clean coal is obtained through a pre-drying...
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Abstract
The invention discloses a method for preparing graphitized carbon from anthracite. The method is characterized in that anthracite is subjected to a dense medium cyclone process to obtain clean coal, on one hand, the clean coal is sequentially subjected to a pre-drying process, a roasting process, an electric calcining process and a cooling process to obtain graphitized carbon, and on the other hand, the clean coal serves as a low-temperature solid material and is sequentially subjected to a pre-drying process, a roasting process and an electric calcining process to form a high-temperature solid material. In the pre-drying process, a heat exchange device is adopted; and the heat exchange device comprises a heat exchanger composed of an outer cylinder and an inner cylinder, wherein the high-temperature solid material and / or a composition of the high-temperature solid material and high-temperature gas pass through the inner cylinder; and the low-temperature solid material passes through the outer cylinder. The heat, which is generated when the high-temperature solid material and / or the composition of the high-temperature solid material and high-temperature gas pass through the inner cylinder, is transferred to the outer cylinder through the wall of the inner cylinder, and thus the low-temperature solid material in the outer cylinder is heated through indirect heat exchange.
Description
technical field [0001] The invention relates to a method for preparing graphitized carbon, in particular to a method for preparing graphitized carbon from anthracite. Background technique [0002] Carbon-increasing materials are used to make up for the carbon burning loss in the iron and steel smelting process to ensure the carbon content requirements of specific grades of iron and steel. At the same time, it can also be used to adjust the label of the ladle after the furnace, reduce the deterioration effect of sulfur in steel, and prevent the phenomenon of overcooling and whitening of cast iron in the process of various mechanical castings. [0003] In recent years, cupola furnaces commonly used in steelmaking and cast iron industries have been replaced by intermediate frequency induction furnaces. The intermediate frequency induction furnace has low pollution and high output flexibility, but it has no self-carburizing effect. As the price of domestic pig iron continues t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): C01B32/205F26B3/20F27D15/02
CPCC01B32/205F26B3/20F27D15/02
Inventor 杨军兵冯振董黄成侃舒文华吕彬峰冯政涵
Owner 淮北天澈碳基新材料科技有限公司