Ramming mass for iron and slag runner of blast furnace

Refractory ramming mass (refractory taphole mass) is widely used in the tapping ditch of blast furnace less than 1000m ~ 3, but there is only one tapping ditch in this kind of blast furnace, the tapping is frequent, the interval time is short, and the castable material can not be used. Therefore, Refractory ramming mass (refractory taphole mass) is a kind of Refractory used for lining the tapping groove of blast furnace. The utility model is mainly used for protecting the iron outlet ditch of the blast furnace from being eroded and scoured by high-temperature hot metal and molten slag. Al2O3-SiC-C is the main material used in modern Refractory. However, according to the different construction methods, it can be divided into castable material, vibrating material, ramming material, prefabricated trough four kinds.

The refractory material for iron and slag runner of blast furnace is mainly Al2O3-SIC-C raw materials, with many varieties. However, according to the different building methods, it can be divided into four types: castable material, vibrating material, Refractory ramming mass and prefabricated tank.

Product photos：

Characteristics of blast furnace Refractory ramming mass (refractory taphole mass) :

the lining material of the iron discharge ditch has strong erosion resistance to molten iron and molten slag;

Good thermal shock resistance and stability;

The volume change of heavy firing is small;

Strong antioxidant capacity;

Convenient for construction;

Non-bonded slag iron,

Easy to repair and dismantle;

With uniform, high-density structure, high strength;

Do not produce harmful gases, conducive to environmental protection.

Production and application of Refractory ramming mass (refractory taphole mass):

High-quality Refractory ramming mass (refractory taphole mass) for iron ditch should have the following properties: excellent anti-burst performance, good thermal shock resistance and oxidation resistance, good resistance to high-temperature melting slag, molten iron melting and erosion performance, non-adhesion slag iron; Suitable bulk density, porosity and sintering properties.

Selection of Refractory ramming mass (refractory taphole mass):

1) aggregate and fine powder: we choose 88% bauxite, 95% brown corundum and 97% white corundum as aggregate and fine powder, and add a little chromium oxide to further improve the slag resistance and thermal shock stability of the product.

2) silicon carbide: the amount of silicon carbide is increased, the grade of silicon carbide of 0-1mm is increased, and the slag resistance of iron ditch material is improved. 3) choice of binder: choose the thermosetting Phenol formaldehyde resin produced by big factories.

The index of Refractory ramming mass (refractory taphole mass):

Control of raw material quality of Refractory ramming mass (refractory taphole mass):

1) strictly control the product quality and the purchase channel, do the laboratory analysis of each batch of raw materials (such as some important indicators: content, water content, particle size, body density and so on) , and make the record, which is convenient for the later comparative analysis and traceability. In principle, excessive moisture content of raw materials to be treated to meet the standard before use. 2) all kinds of raw materials and products should be classified and labeled to prevent mixing, but also should pay attention to waterproof moisture. 3) add resin ramming material product general storage period is 20 days, if the storage time is too long, easy hair dry, hard to ramming molding.

Production process of Refractory ramming mass (refractory taphole mass):

1. Each kind of material adds before using strictly according to the proportion weight.
2. before adding powder to mix, the powder should be pre-mixed, all powder mixing time not less than 5 minutes, reduce material segregation.
3.  mixing and feeding sequence: adding granular material (5 minutes)→ adding half amount of resin → mixing (wetting the granular material)→ adding pre-mixed powder → mixing → adding half amount of remaining resin → mixing → discharging packing. The total mixing time of each set is about 30 minutes.
4.  when adding resin, the speed should be controlled, even and slowly.
5.  the existing mixer is difficult to meet the production requirements, the need to assemble roller or re-purchase wheel roller mixer.
6.  after the end of the production day, the mixer should be cleaned of the remaining material.
7.  add two rollers or buy a roller mill mixer (600kg) to ensure the quality of mud. Improvement of construction quality

Construction of Refractory ramming mass (refractory taphole mass):

We carry on the onboarding training to the construction worker, asks the worker who has dug the ditch in the blast furnace before to be the construction team foreman. Under normal circumstances, ditch body lining at least 3 days before the repair and ditch cleaning, usually only a small area of repair and maintenance can be. Site construction should also pay attention to the following points.:

1) when repairing ditches and clearing ditches, only a small amount of water can be sprinkled in order to cool down. If there is molten iron ditch, with sand and molten iron slag, and then pry up, it is best not to use air blowing, otherwise molten iron will enter the non-sintered refractory.

2) when repairing the ditch and clearing the ditch, not only should the residue and iron in the ditch be cleaned, but also the severely burned tamping material be cleaned, and then be blown clean by the trachea. At the same time both sides of the ditch sand clean to avoid sand into the iron ditch ramming material.

3) the material thickness of the bottom of the main ditch body is generally 300mm-600mm. It should not be rammed after one-time feeding. It should be continuously rammed and compacted layer by layer. The material thickness of each layer is about 100mm.

4) the tamping material should be checked before use, and the products that have hardened and dried out should not be used. The slag skimmer must avoid artificial impurities into the slag skimmer.

5) after ramming, must carry on with the fire roast 5-10 minutes, causes the ramming material surface to harden.

Silicon carbide-carbonaceous cooling stave refractory ramming mass (refractory taphole mass): has the characteristic which other materials do not have. The construction is simple, the craft request is simpler than inlays the refractory brick, the price is affordable. The ramming material of various parts of a blast furnace:

Refractory ramming mass (refractory taphole mass) manufacturer according to your requirements shipping :

1.20GP FCL :25-26TONS

2.40GP FCL: 25-28TONS

3.40HQ FCL:25TONS or 28 TONS

The above quantity without pallet ,the goods will be sent within 7-15days after receiving your order.

Gongyi Yuying Refractory Co., Ltd FAQ

We can provide samples for free and charge shipping.

1. What is your MOQ?
Our product MOQ is 10 kg.

2. What kind of software package will we use?
25 kg plastic bags can also be customized.

3. What is the delivery time?
1*20 GP container takeS about 3 to 5 days.

4. Can you give me a discount?
Yes, we can negotiate

5. Can you give me advice based on the information we describe?
Of course, our mission is to provide you with professional services.

6. What is the shipping method?
Shipping, air, express. International train

7. What is the type of your company?
We are a Manufacturing & Trading Combo.

How do I get in touch with your company?How do I get a technical specification for a product?

You can contact us by email: yuyingamy@outlook.com. Whatsapp: +8613215996925. or Wechat : 13215996925.You can also visit our website at website for more information.

Our equipment：

Gong Yi Yu Ying Refractory Co. , Ltd. is a professional Refractory r & D, production and sales enterprises. The company mainly produces refractory bricks, refractory balls, mortar and other products, widely used in Refractory, sandblasting materials, precision casting and other industries. Yu Ying Refractory Refractory products have excellent high temperature resistance and fire resistance, to meet the needs of different Refractory. The company has advanced production equipment and technical team, in strict accordance with national standards and industry standards for production, to ensure product quality and performance.

Gong Yi Yu Ying Refractory Co. , Ltd. has a wide range of Refractory products, including Refractory, refractory bricks, fireballs, mortar, etc. . Amorphous Refractory include ladle castables, mud-sheathed castables, corundum castables, steel fiber castables, ladle castables, drain castables, etc.  Refractory brick includes high alumina brick, clay refractory brick, thermal insulation brick, checker brick, lightweight refractory brick, etc.  The clay includes functional anhydrous clay, environment-friendly anhydrous clay, vanadium-titanium clay, nickel-iron clay, etc. .

Gong Yi Yuying Refractory Co. , Ltd. is committed to providing high-quality Refractory products to meet customers' different needs. At the same time, the company also provides professional technical support and The Adjuster, to ensure that customers in the use of the process to obtain satisfactory results. Thank you for your attention and support! We attach great importance to your needs and are willing to provide you with the best service. If you have any questions or need help, please feel free to contact us: Email: yuyingamy@outlook. com. Whatsapp: + 8613215996925. Or Wechat: 13215996925. We will answer your questions as soon as possible. Thank you for your trust and look forward to working with you!