Recarburizer/Carburetant for Casting Iron Foundry H Content % 0.01%max and Affordable

Recarburizers are used for refining steel recarburizers and cast iron recarburizers, as well as other additives to recarburizers, such as brake pad additives, as friction materials. The recarburizer belongs to the external steelmaking and iron-making carbon-increasing raw materials. High quality carbonizers are essential additives for the production of high quality steel.

There are many kinds of raw materials for recarburizers, and the production process is also different. There are various types of wood, carbon, coal, coke, and graphite. There are many small types under various classifications. High-quality recarburizers generally refer to graphitized recarburizers. Under high temperature conditions, the arrangement of carbon atoms is in the microscopic form of graphite, so it is called graphitization. Graphitization can reduce the content of impurities in the recarburizer, increase the carbon content of the recarburizer, and reduce the sulfur content.

The recarburizing agent is used in casting, which can greatly increase the amount of scrap steel, reduce the amount of pig iron or use no pig iron. In the feeding mode of electric furnace smelting, the recarburizing agent should be placed together with the charging materials such as scrap steel, and the addition of small doses can be added to the surface of the molten iron. However, it is necessary to avoid feeding large quantities into the molten iron to prevent excessive oxidation and the carbonization effect is not obvious and the carbon content of the casting is insufficient. The amount of the recarburizer added is determined according to the ratio of other raw materials and the carbon content. Different types of cast iron, choose different types of recarburizers according to your needs. The characteristics of the recarburizer itself select pure carbon-containing graphitized materials to reduce excessive impurities in the pig iron. The selection of the recarburizer can reduce the casting production cost.

Introduction of recarburizer

The role of recarburizer
Used for casting, cast iron, cast steel, and castings have a requirement for carbon, then the recarburizer, as the name suggests, is to increase the carbon content in the molten iron. For example, the commonly used furnace materials in smelting are pig iron, scrap steel, and recycled materials. The carbon content of pig iron is high, but the purchase price is higher than that of scrap steel. Therefore, increasing the amount of scrap steel, reducing the amount of pig iron, and adding recarburizers can play a role in reducing the cost of castings.
Recarburizers are divided into recarburizers for steelmaking and recarburizers for cast iron, and some other additives are also useful as recarburizers, such as additives for brake pads, as friction materials. Recarburizers belong to the raw materials for adding recarburization for steelmaking and ironmaking. High-quality recarburizer is an indispensable auxiliary additive for the production of high-quality steel.

Types of recarburizers
There are many materials that can be used as recarburizers for cast iron. Commonly used are artificial graphite, calcined petroleum coke, natural graphite, coke, anthracite, and mixtures made of these materials.

Recarburizers can be used as a material for cast iron recarburizers, and artificial graphite, calcined petroleum coke, natural graphite, coke, anthracite, and mixtures made of such materials are commonly used.

1.Artificial graphite recarburizer

Among the above various recarburizing agents, the best quality is artificial graphite.

The main raw material for the manufacture of artificial graphite is powdered high-quality calcined petroleum coke, in which asphalt is added as a binder, and a small amount of other auxiliary materials are added. After the various raw materials are mixed, they are press-formed and then treated in a non-oxidizing atmosphere at 2500 to 3000 ° C to make them graphitized. After high temperature treatment, the ash, sulfur and gas contents are greatly reduced.

Due to the high price of artificial graphite products, the artificial graphite recarburizers commonly used in foundries are mostly recycled materials such as chips, waste electrodes and graphite blocks when manufacturing graphite electrodes, so as to reduce production costs.

When smelting ductile iron, in order to make the metallurgical quality of cast iron superior, the artificial carbon should be preferred.

2. Petroleum coke recarburizer

Petroleum coke is a widely used recarburizer.

Petroleum coke is a by-product of refined crude oil. Residual oil and petroleum asphalt obtained by vacuum distillation or vacuum distillation can be used as raw materials for petroleum coke, and then coke is obtained to obtain raw petroleum coke. The production of raw petroleum coke is less than 5% of the amount of crude oil used. The annual production of petroleum coke in the United States is about 30 million tons. The raw petroleum coke has high impurity content and cannot be directly used as a recarburizer. It must be calcined first.

Raw petroleum coke has spongy, needle-like, granular and fluid states.

Sponge petroleum coke is produced by a delayed coking process. It is usually used as a fuel for calcination because it has a high sulfur and metal content, and can also be used as a raw material for calcining petroleum coke. The calcined sponge coke is mainly used in the aluminum industry and as a recarburizer.

The acicular petroleum coke is obtained by a delayed coking process using a raw material having a high content of aromatic hydrocarbons and a low impurity content. This coke has a needle-like structure that is easily broken, sometimes referred to as graphite coke, and is mainly used for the manufacture of graphite electrodes after calcination.

Granular petroleum coke is a hard granule. It is a raw material with a high content of sulfur and asphaltene. It is produced by delayed coking and is mainly used as a fuel.

The fluid petroleum coke is obtained by continuous coking in a fluidized bed. It is in the form of fine particles, has no directional structure, high sulfur content and low volatile content.

The calcination of petroleum coke is to remove sulfur, moisture, and volatiles. Calcination of raw petroleum coke at 1200~1350 °C can make it a substantially pure carbon.

The largest user of calcined petroleum coke is the aluminum industry, and 70% is used to make anodes that reduce bauxite. Calcined petroleum coke produced in the United States accounts for about 6% of cast iron recarburizers.

3. Natural graphite recarburizer

Natural graphite can be divided into two types: flake graphite and microcrystalline graphite.

Microcrystalline graphite has a high ash content and is generally not used as a carbon reinforcer for cast iron.

There are many varieties of flake graphite: high carbon flake graphite needs to be extracted by chemical methods, or heated to high temperature to decompose and volatilize the oxides. This flake graphite has low yield and high price, and generally does not act as a recarburizer; low carbon flakes Graphite has a high ash content and should not be used as a recarburizer; it is mainly used as a carbon reinforcer for medium carbon graphite, but it is not used in large amounts.

4. Coke and anthracite recarburizer

In the electric arc furnace steelmaking process, coke or anthracite may be added as a recarburizer during charging. Induction furnace smelting cast iron is rarely used as a recarburizer because of its high ash and volatile content.

Packaging

1. 1 ton bags in container, 25 MT/20'FCL.
2. 25kg bags in container, 25 MT/20'FCL
3. 25kg bags in ton bags, then in container, 25 MT/20'FCL
4. as the customer' request

Packaging of SK37 High Alumina Refractory Brick

1.on wooden pallets with plastic cover: wooden pallet size :930*930 or 1000*1000mm,
2.Load weight of each pallet: 1.5-2.0 tons,

Shipping of SK37 High Alumina Refractory Brick

1.Our packaging is as per customer’s request
2.Normal goods delivered by sea transport
3.Sample shipping by express
4.We will shipping and delivery goods timely, quality and quantity guaranteed, and also in accordance with the contract and customer's requirement completely.

Delivery:

15-30 days working day for large quantity. The shipment we will arrange as soon as possible. Of course, if it is a custom products, the shipping time will delay.
Sample:

Usually by EMS, DHL, UPS, TNT, FedEx. Anyway you like. Bulk order: Usually by sea.

Payment:

It can be through T/T, L/C at sight. The specific terms determined according to the quantity of the goods, etc.
Your inquiry related to our product & price will be replied within 24 hours.
Export:
Our products have been exported to many countries: Australia, Chile, USA, Russia, UK, Indonesia, etc., good quality have be approved by our clients.

1.Timely response, 

Timely response to your inquiry, multiple choice recommendations based on your demand,quickly respond mails and provide solutions. 

2.Free sample of dry ramming mass

Sample and trial order are accepted for the quality evaluation

3.Strict quality control

Arrange production on time and control quality strictly. 

4.Shorter delivery time.

Book the earliest vessel or plane to guarantee the delivery time. 

5.Professional Services

Provide all the detailed news and pictures from order to delivery;offer relative export documents and original certificate if needed;warm and considerable after-sale service. 

Henan hongtai kiln refractory co., LTD. : "quality first, reputation first, customer first: it is our aim."Scientific management, strong technical force, perfect testing means, advanced technological equipment and stable product quality are the guarantee of quality service.Henan hongtai kiln refractories co., LTD sincerely hopes to cooperate with you hand in hand and in good faith.
Henan hongtai kiln refractory co., LTD. Main products are high alumina brick, clay brick, fused zirconium corundum brick, fireproof ball lightweight insulation brick, wear-resistant pouring material, corundum pouring material, low cement high strength pouring material, impermeable material, self-flowing material, plastic material, and various types of refractory materials.For different industries, the cement industry with anti-flaking high-alumina bricks, alkali resistant bricks, phosphate bricks;Boiler industry USES all kinds of brand wear-resisting brick, corundum brick, mullite brick and other finalizing materials.The company insists on "product quality is the life, enterprise integrity is the foundation", in the fierce market competition, won many users' trust and praise.The products are sold all over the country, as far as Vietnam, India, Korea, Pakistan, kazakhstan, other southeast Asian countries and regions.

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