Abrasive Black Silicon Carbide/Carborundum Grits

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
2000 m.t./month

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Product Description

  

Product name

Abrasive black silicon carbide/Carborundum

Model No

BA-#20 

Brand name

CNBM

 

 

 

 

Description

  • Black silicon carbide is produced in an electric-resistance type furnace through fusing quarts sand and petroleum coke and high quality silica with high temperature. Its hardness is between fused alumina and diamond's. 

  • higher mechanical intensity than fused alumina's. 

  • It is brittle and sharp and has electrical and heat conductivity in some degree. Black silicon carbide, metallic, sic≥95%, stronger than green silicon carbide but softer than green silicon carbide, is mainly used for grinding of cast iron and non-metallic materials.

 

 

 

 

Advantage

  1. Raw materials are of high quality: pure silicon carbide, guaranteeing the products’ good quality.

  2. Sharp knife-edge, having cutting function.

  3. Centralized and uniform particle size distribution

  4. Electrical conductivity

  5. Heat conductivity

  6. Chemical stability

  7. High thermal conductivity

  8. Low expansion coefficient

  9. Good abrasion-resistance

 

 

 

 

 

Parameter

  • The shape: polygon

  • Color: black

  • Proportion:3:2

  • Bulk density:1.45-1.56 g/

  • Mircohardness:2840-3320g/mm2

  • Mosh hardness: 9.15

  • Package: 25\kg

  • Composition%:SiO≥92.5%,Free C≤0.3%,Fe2O3≤1.2%

 

Usage

  • Black silicon carbide, sic≥98.5%,its toughness is better than green silicon carbide.

  • Mostly for processing low tensile strength of the materials, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals.

Shipping way

By sea, by air, by express

Delivery time

Within 7 days from the receipt of payment

Loading seaport

Shenzhen

Package

25kg/bag with woven bag

Price term

FOB Shenzhen, CFR,, CIF, FCA, EXW ect

Payment term

100% T/T in advance(negotiation)

 Abrasive Black Silicon Carbide/Carborundum Grits


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Q:Who knows the classifications of magnesia refractory?
They can be devided into two major categories of fettling magnesite grain and magnesite products. They can be divided into fettling magnesite grain, magnesia brick, magnesia-silica brick, magnesia-alumina brick, magnesium-calcium brick, magnesia-carbon brick and other varieties according to the chemical compositions and purposes Its performance is greatly affected by CaO / SiO2 ratio and impurities. The load softening point and thermal shock resistance of high purity magnesia brick are much higher than those of the general magnesia bricks. It has high refractoriness and good resistance for alkaline slag and iron slag, which is an important kind of advanced refractory material. Magnesia products are mainly produced by sintering, and sintering temperature is generally between 1500 ~ 1800 ℃. Besides, chemical binder can be added to make unburned bricks and unshaped refractories. Mainly used in open hearth furnace, electric furnace, oxidation converter, non-ferrous metal metallurgy furnace, cement kiln and calcining kiln for basic refractory.
Q:What materials are needed to make the amorphous refractory bricks?
Amorphous refractory brick is composed of a certain proportion of aggregate and powder, a binder and an additive, and can be directly used without high temperature firing.
Q:What are the specific steps of stirring the steel ladle castable?
Steps are as follows. 1 Compulsory mixer is used to stir the castable and bags, rope and other debris can not mix in the castable when stirred. 2, Castable should be unpacked on the scene. Stirred volume depends on the capacity of the mixer. Castable should be accurately measured and put into a blender. 3 The process of first dry mixing and then wet mixing is adopted. After the castable is added to the mixer, it is dryly mixed for 2 minutes, add about 5.2 to 5.5 percent of water and continue to add water while stirring. Water that is 80% of the total should be added, and then decide whether to continue to add or not depending on the consistence (noting that the water must be clean water and sewage can not be used). Then it is wetly mixed for 4 minutes and stirred for not less than 6 minutes at one time, until castable is even. In general, the bottom is slightly dry and the wall of the ladle is slightly dilute (the amount of water is only for reference). 4, The amount of water and mixing time should be controlled strictly when stirred to ensure that the needs of the consistency are met. If castable is too thin, it will seriously affect the quality of the material. The stirred volume, stirring time and water that is added should be consistent and they can not suddenly be thick or suddenly be thin. If the consistency does not meet the requirements, the castable should be put back to the mixer and stirred with appropriate water or dry materials. 5, It should be stirred evenly and casting should finish in 20 minutes, in order to avoid sclerosis, affecting structural strength of ladle lining 6, After each completion of construction, varieties of castable should be changed and the mixer should be cleaned 7, Stirring can stop in halfway. If the mixer breaks down and it can be repaired in a short time, some of the materials have to be removed before the machine is opened. If the machine can be repaired on time, castable refractory should all be removed.
Q:Which refractory is better for building 1500 degree kiln ?
High alumina brick or 99 alumina hollow ball brick is OK, which can withstand a temperature of 1600 ℃.
Q:What kind of materials can be tested their electrical resistivity in the current refractory industry?
Graphite, Magnesium Oxide, and alumina are all feasible.
Q:Please answer the questions about the packing and transportation requirements of refractory materials.. Requirements for packing of refractory bricks
Exports should be fumigated outside of South East asia. Pallet packing is the most common, convenient and inexpensive.
Q:What is streaming fireproof material?
Since streaming fireproof material has less surface energy, so when it is placed in a location to be used, it can be automatically filled so long as mixed with water at proper ratio. And then using vibrator or vibrostand and other tools to compact the mixture so as to satisfy the use requirements. Therefore, it does not require vibration, and it has less friction force between the particles. Generally hydraulic refractory castable must be mixed with water at proper ratio when in construction . While, the concept of "streaming" is in terms of refractory castable.
Q:Which industry does the metallurgy and thermal insulating and refractory material belong to?
It belongs to the refractory industry, which has its own trade association.
Q:What's the poured refractory material?
According to its category, raw material of basic refractory: Mainly magnesite (magnesia), dolomite, lime, olivine, serpentine, high alumina material (sometimes neutral); main neutral raw material: chromite, graphite, silicon carbide (artificial).
Q:What is the principal part of silicious refractory material
lightweight silica bricks, product with fused quartz, the silicon dioxide content is generally greater than 93%, including silica brick silicious refractory SiO2 as a main component of refractory products

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