The so-called recarburizer is to increase the content of carbon in the molten iron after it is added. Therefore, the fixed carbon content of the recarburizer must not be too low. Otherwise, to reach a certain carbon content, it is necessary to add a high carbon content. With more samples of recarburizer, this undoubtedly increases the amount of other unfavorable elements in the recarburizer, so that the ferrofluid can not obtain a better return.

Low levels of sulfur, nitrogen, and hydrogen are key to preventing the production of nitrogen holes in castings. This requires that the nitrogen content of the recharging agent be as low as possible. The other indicators of recarburizers, such as moisture, ash, and volatiles, the higher the amount of fixed breakage, so the high fixed carbon content of these harmful ingredients must not be high. For different smelting methods, furnace types, and sizes of smelting furnaces, it is also important to select an appropriate particle size of the carbon reductant, which can effectively increase the absorption rate and absorption rate of the recarburizer by the molten iron and avoid excessively small particles. Caused by oxidative damage to the breaker. The particle size is preferably: 100 kg furnace less than 10 mm, 500 kg furnace less than 15 mm, 1.5 tons furnace less than 20 mm, 20 tons furnace less than 30 mm. In the smelting of converters, when high-carbon steels are used, recarburizers containing little impurities are used.

The requirement for the recarburizer for top-blowing converter steelmaking is that the fixed carbon should be high, the content of ash, volatile matter and sulfur, phosphorus, nitrogen and other impurities should be low, and it should be dry, clean, and the grain size should be moderate. Its fixed carbon C> 97%, volatile matter <1.0%, S <0.5%, moisture <0.5%, particle size in l-5mm. The particle size is too fine to be easily burned, and it is too thick to float on the surface of the molten steel and is not easily absorbed by molten steel. The particle size of the induction furnace is 0.2-6mm, in which the steel and other ferrous metals have a particle size of 1.4-9.5mm, the high carbon steel requires low nitrogen, the particle size is 0.5-5mm, etc. The concrete need to be based on the specific furnace type smelting workpiece The details of the types and so on are specifically judged and selected.

Published in News

Abstract: carbon additive, as its name implies, is used to increase the carbon content of iron melting or steelmaking. If it is formed by graphite powder, which can greatly increase the amount of scrap steel, reduce pig iron or do not use pig iron. Carbon additive can reduce casting cost to a certain extent.

The classification of carbon additive for casting can be divided into several different categories according to different classification criteria and standards.

1. According to casting purpose, it is divided into: nodular iron carbon additive, gray iron carbon additive, cast steel carbon additive, special carbon additive:

1.1 ball iron carburizing agent generally uses graphitized high carbon and low sulfur products, the basic requirements are: C>98.5, S<0.05; its main material is graphite fossil oil coke, graphite electrode and so on. It also has the highest absorption rate and fastest absorption time in carburizing agents.

1.2 the main technical index of gray iron carburizing agent and nodular iron carburizing agent is the control of sulfur. The general requirement is S<0.5, and C content can be selected according to the cost control requirements 98.5 95 93 90. The absorption rate of this kind of carburizing agent is about 85%. Its main material is non graphite fossil oil coke, calcined coal and so on.

1.3 cast steel type of carburizing agent is more complex. In general, large steel mills choose a variety of carburizing agents according to different kinds of steel, but the general material is calcined coal, or Shi Moqiu, and it is also useful for natural graphite. The content varies from 75-99.

1.4 special carburizing agents are mainly used for brake block manufacturing, core wire manufacturing, and 0-0.5 or 0.5-1MM granularity.

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Carbon Additive 0-3mm
Date: March 16,2018
Moisture: 0.24%
Ash: 0.39%
Volatile Matter: 0.67%
Fixed Carbon: 98.70%
Sulphur: 0.26%

Published in 2018
Wednesday, 09 May 2018 02:20

Graphited Calcined Petroleum Coke 0-2mm

 The specifications of the Graphited Calcined Petroleum Coke 0-2mm

Type
Fixed Carbon
Sulphur
Moisture 
Ash
Volatile Matter
N PPM
Graphited Calcined Petroleum Coke 0-2mm
98.5% min
0.05% max
0.5% max
0.8% max
0.8% max
0.03% max

 

 

 

Calcined petroleum coke is a high purity carbon material produced by heating green petroleum coke to drive off moisture, volatile matter, and impurities and to increase its electrical conductivity, which is used to improve the carbon content in steel-making and ductile iron foundry. It is widely used to produce graphite electrode, graphite blocks, brakes pads and other carbon products. it can also be used as carbon additive in some steel and aluminum plants, another, it is used in refractory, insulation, filler,etc. We can supply different grades of Graphited Calcined Petroleum coke.

Foshan Yoshida Casting Material Co., Ltd. is a carbon material comprehensive industrial company integrating R & D, production and sales, and the main products are calcined petroleum coke, graphited calcined petroleum coke and other carbon additive products.

Afterwards, through crushing, screening and classification, we supply our users with the different particle size as the customers' request like 0-1mm, 1-3mm, 1-5mm, 8-30mm and more, alos the specifications.

Thank you for your patient reading! We welcome your inquiry.

In order to serve you best and save your time, sending specifications technical data of the goods you are looking for is warmly welcomed. ( fixed carbon, sulphur, ash, etc)

 

Contact: Owen Zhang
Email: carbon86[at]126.com
Mobile: +86 182 1805 1155
Wechat: 182 1805 1155
Whatsapp: +86 182 1805 1155
Tel: 0086-757-85685335
Fax: 0086-757-85685300
Add: Room 329,Zinji City building, Xiaxi, Guicheng, Nanhai, Foshan, Guangdong, China

Packing and Loading

Calcined Petroleum Cokes packing with:

1.Small bag:25kg kraft bag or PP bag.
2.Big bag: 1000kg Jumboo bag
3.According to customer's requirements

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