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Micro powder graphite carburant, preparation method and use method thereof

A technology of micropowder graphite and recarburizer, which is applied in the field of recarburizers, can solve problems such as environmental pollution, and achieve the effects of reducing production costs, stable recarburization effect, and high fixed carbon content

Active Publication Date: 2010-07-14
ZHANJIANG JUXIN NEW ENERGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a kind of micropowder graphite recarburizer, the technical problem to be solved is to improve the quality of recarburizer, reduce its cost, solve the problem caused by the graphite tailing generated in the process of lithium-ion battery composite negative electrode material processing. Environmental Pollution

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  • Micro powder graphite carburant, preparation method and use method thereof

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Embodiment 1-8

[0048] Examples 1-8 Preparation and Performance Testing of Micropowder Graphite Carburizer of the Present Invention

[0049] The composition and performance detection of the micropowder graphite recarburizer of the present invention described in Examples 1-8 are shown in Table 1, and its preparation method comprises the following steps:

[0050] 1) Weigh the starch or tapioca starch, CMCNa or CMC of the composition described in Table 1, add an appropriate amount of water, stir, and mix uniformly to obtain a binder solution;

[0051] 2) take by weighing the micropowder graphite of composition described in table 1, described micropowder graphite is the graphite tailings that generate in the lithium-ion battery composite negative electrode material process, add 1) the binder solution that step makes, after stirring and mixing, Carry out granulation, dry, sieve treatment, obtain.

[0052] 3) The physical and chemical properties of graphite tailings are tested in Table 1.

[005...

Embodiment 9

[0057] Example 9 Carburizing Effect Test of Micropowder Graphite Carburizing Agent of the Present Invention

[0058] According to the method for steel smelting, the micropowder graphite recarburizer of the embodiment of the present invention 1-8 is used for smelting steel types above the Q235 series, and the test results include:

[0059] 1. The micropowder graphite recarburizer of the present invention is a columnar particle, and has the characteristics of less powder content, uniform particle size, moderate specific gravity, stable quality, convenient use, no dust, safety and environmental protection, and excellent recarburization effect;

[0060] 2. From the point of view of field use, after the micropowder graphite recarburizer of the present invention is added in the molten steel ladle, the melting time is relatively short, and it can be well melted after tapping;

[0061] 3. The carburizing effect of the micropowder graphite recarburizer of the present invention is exc...

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Abstract

The invention discloses a micro powder graphite carburant, a preparation method and a use method thereof, aiming at improving quality of carburant and solving the environment pollution caused by graphite tailing. The carburant in the invention contains 80-99% of micro powder graphite and balance of agglomerant, the micro powder graphite is graphite tailing, and the agglomerant is composed of starch and carboxymethylcellulose or sodium carboxymethylcellulose. The preparation method comprises batching, stirring, pelleting and drying. When the carburant is used in electric furnace above 5 tons, carburant and metal furnace materials are added to the lower part in the electric furnace along with batch materials. Compared with the prior art, the invention has the characteristics of high carbon, low sulphur, low phosphorus, low water content, high chemical activity and high carbon absorptivity, larger surface area is soaked in molten steel when in use, carbon absorptivity reaches above 96%, carbon content in smelt steel is obviously increased, steel melting cost is effectively reduced, and the environment pollution problem caused by graphite tailing is solved well.

Description

technical field [0001] The invention belongs to the field of recarburizers, in particular to a micropowder graphite recarburizer and its preparation method and use method. Background technique [0002] In the steelmaking production process, it is necessary to add carbon to the molten steel in the ladle to meet the carbon content requirements of various specifications of steel, so some special carburizers are needed. The existing types of recarburizer include pig iron, forged coal recarburizer, coke powder recarburizer, coke recarburizer, pitch coke recarburizer, graphite electrode recarburizer, petroleum coke recarburizer, carbon powder core These existing carburizers have many defects, such as many types of impurities, high impurity content, relatively low fixed carbon content, and relatively high water content. The recarburizer has defects such as poor melting during the steelmaking carburization process, unsatisfactory carbon absorption rate or carbon recovery rate, or h...

Claims

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Application Information

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IPC IPC(8): C21C7/00C21C5/00
Inventor 吴其修
Owner ZHANJIANG JUXIN NEW ENERGY
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