Advantages of natural corundum

Natural diamond grinding H&X carbide silicon of slightly less than white corundum furnace, but its self-willed, and has a characteristic shell-like section of the mouth, the advantage of grinding parts finish, sand marks few and shallow. Fine grinding and uniform, to improve product quality, as Emery is unique. Natural diamond grinding time is short, high efficiency, low cost, short life can H&X fused silica manufacturers for the lack.
Natural corundum called garnet, which is the condition of the sky because it's produced, is a silicate mineral. Emery grinding raw materials through a simple process can be divided into several levels, classification and other methods of screening, great hardness, which is about Mohs 7-8 degrees. Usually a brown powder particles. Metals for industrial sandblasting, grinding and other purposes.

The main raw material of silicon carbide abrasive

H&X Aluminium hydroxide powder is black quartz sand, petroleum coke as the main raw materials, smelting electric arc furnace. Its hardness between corundum and diamond, corundum higher mechanical strength, brittle and sharp. It has a certain electrical conductivity and thermal conductivity. Black silicon carbide Usage: abrasives, metallurgical deoxidizer, high temperature materials, semiconductors, carbon fiber (1) as an abrasive, can be used for abrasives, such as grinding wheel, Whetstone, grinding, sand tile and so on. (2) as a metallurgical deoxidizer and high temperature materials. Silicon carbide has four major application areas, namely: functional ceramics, advanced H&X Sic Refractory, abrasives and metallurgical materials. (3) high-purity single crystal can be used for the manufacture of semiconductor manufacturing silicon carbide fibers. (4) silicon carbide is very hard and has excellent thermal conductivity properties, is a semiconductor, resistant to oxidation at high temperatures.

What is mainly used for the production of Brown Corundum

Corundum functional filler - mainly used for automobile brake parts, special tires , specialty H&X fused silica products in areas such as construction of motorways , runways , terminals , parking lots, industrial flooring , sports and other wear-resistant materials ;
1 filter media - is a new field of application of the abrasive , particulate abrasive for use in the bottom of the filter media bed , the purification of drinking water or waste water , is a new type of domestic water filter material, especially for non-ferrous ore , oil drilling mud H&X sil agent :
2 abrasive water-jet cutting - is abrasive cutting media , relying on basic high-pressure water jet cutting, used in oil ( gas ) pipelines, cutting steel and other components , is a new , environmentally friendly, safe cutting . Customers: washing plant denim sandblasting workshop shipyard shipyard steel plant powder factory Grinding Wheel sandpaper, emery cloth factory floor crystal glass industry, construction industry, steel industry, metal industry, electronics manufacturing car with coastal terminals, parking Hospital Stadium spray . sands industry to meet all types of users , such as co- Ping required to aggregate and abrasive .
Products and reliable, stable performance , high quality, easy to use.

Full description of the alumina production process

A comprehensive introduction to the basic theory, techniques and new technologies and sintering Bayer alumina production, review and summarize the results of a new study in the field of aluminum, according to China's bauxite resources, put forward the sustainable development of China's aluminum industry direction.
The main contents include: the H&X silicon carbide grit of China's development in the world and our bauxite and alumina industry resources; sodium aluminate solution properties, Bayer and sintering of alumina production principles and processes; affect Bayer alumina dissolution process, red mud settling performance, seed decomposition H&X silica sand, the evaporation process and the factors and processes aluminum hydroxide roasting process optimization; sintering clinker, clinker leaching, and sodium aluminate solution desilication carbonation decomposition techniques; China's alumina industry in the direction of sustainable development; development and application of Bayer alumina production method and sintering the latest technology.

Alumina Oxide organoaluminum compound

1, high-purity fumed aluminum H&X calcium silicon sulfate alum, ammonium sulfate, ammonium alum was synthesized (ammonium aluminum sulfate), dehydration, pyrolysis of alumina, and then by phase inversion to obtain γ-, α-alumina.
An organic aluminum compound in the polymerization of sticky polyaluminoxane solution, the aluminoxane solution polymerization was dry-spun fiber to obtain an organic aluminum compound, and then calcined alumina fiber.
The organic aluminum compound is polymerized to produce a viscous poly alumoxane solution, which use an ordinary dry spinning method, the fibers made ​​of an H&X white fused alumina suppliers aluminum compound. And then calcined to obtain alumina fibers.
2 Method 1. Crystallized aluminum sulphate dissolved in distilled water, and then slowly added under constant stirring solution of ammonium sulfate, ammonium aluminum sulfate was prepared:
Then heated to 100 ~ 200 ℃, after removal of water of crystallization, a high temperature burning pulverized into a powder, ignition starts at 800 ℃, and then heated to 1250 ~ 1300 ℃ burning 4h, alumina, obtained after cooling.

Progress of unshaped refractory castable

Introduced a monolithic refractories way to cast construction abrasive material - castable, and according to the author of the latest research findings and new products in recent years about the casting material preparation, application, etc., systematic exposition of coke gem-based castable, bauxite-based castable, mullite-based castable, corundum based castables, magnesia castable, lightweight insulation castable and research progress and performance of acid and alkali resistant castable. On this basis, the development trend castable.
Also known castable Sic Refractory castable: a refractory material joined by a certain amount of granular and powdered materials made ​​binders. With higher liquidity, apply to casting molding way monolithic refractories. Compared with other monolithic refractories, binders and moisture content is higher, better mobility, so a wide range of applications without stereotypes refractories can be used for selection of materials and binders based on conditions of use. Either directly poured into the lining of the body to use, and available method of casting or real shock made ​​use of prefabricated blocks.

Effect of different binders on the rheological properties of monolithic refractories

calcium silicon: unshaped refractory binder definition and classification , introduced the use and application of the principles of various monolithic refractories binder , a detailed analysis of the different binding agents on the rheological properties of monolithic refractories , and analyzes the application status and future trends unshaped refractory binders discussed.
Category Industrial Technology > Chemical Industry > Portland Industrial > Industrial Refractories > Refractory Products > unshaped Sic Refractory
Keywords unshaped refractory binder rheology
About binder binding agent is a combination of various types of abrasive bonding agents and abrasive materials . Bonded Abrasives usually ceramic , resin, rubber, magnesite four categories binders . Binding agents can be divided into inorganic binder and organic binder . Superhard abrasive material constituting the binder resin is a thermosetting resin as a binder with a variety of fillers , the nature and amount of the number of the various components of the binding agent on the physical properties , mechanical properties and grinding performance have a great impact .

Rare earth can significantly reduce the inclusion quantity of two reasons

(1) the characteristics of rare earth oxides with high melting point, than the major, the proportion of about 2.5 times higher than pure aluminum powders. The greater the proportion of oxide, in the process of let stand, the more you will sink of inclusions, thus the remnants of the inclusions in aluminum liquid quantity the less;
(2) rare earth to join aluminium alloy liquid, liquid aluminum is smooth, does not like other refining agent boiling violently, secondary oxidation in the melting process, thus incorporated into the regenerative oxidation film (Al2O3) few in number. Deoxidization Sic Refractory of rare earth elements than deoxidizer Al, Mg, Ti, trace rare earth can make [O] strip to < 1 x 10-4%. Rare earth desulfurization ability is strong, can generate RES or RE2S3, products mainly depends on the activity of rare earth with sulfur or solubility. Rare earth elements in the fluid of the metal, also can react with O and S at the same time generate RE2O2S type sulfide. Rare earth elements can also with low melting point metal such As P, Sn, As elements combined, generate REP, RESn, REAs compounds. These rare earth compounds have the characteristics of high melting point, the proportion of light, when they are higher than the melting point of metal smelting temperature, can rise of slag. Their tiny particle becomes aluminum heterogeneous nucleation crystallization process, the removal of impurities in aluminum and its alloys. So, rare earth can make aluminum impurities redistribution, bulky compound glomeration, purification and grain boundary, improve the deformation, plastic processing of aluminum and its alloys.

About corundum What is the main component and classification

Refers to the industrial alumina white fused alumina powder as raw material in the arc melting temperatures above 2000 degrees through steel. Corundum main chemical ingredient is AL2O3, its content in a 98.65% -99.37%, and the other a small amount of Fe, Si, Ti and so on. Corundum for the manufacture of ceramic, resin bonded abrasives and grinding, polishing, sandblasting, precision casting, etc., can also be used to manufacture advanced refractories.
Corundum behalf # "WA" on internationally accepted standards, national standards, most for export, there is a certain amount of supply domestic users.
Sandblasting grade corundum is divided into:
16 # 46 # 60 # 80 # 100 # 120 # 150 # 180 # 200 # 220 # 280 #
Particle size in accordance with international standards and national standards of production, processing granularity according to user requirements. Universal size # is F4 ~ F320, its chemical composition varies depending on the particle size. Prominent feature is the small crystal size impact resistance, due to a self-processing mill crushed particles are mostly spherical particles, dry surface cleaning, easy binding agent combination. Year the company provides silicon carbide, white fused alumina, corundum powder, green silicon carbide powder and sand grain size.

Silicon carbide production process will produce harmful substances do

Silicon carbide production process will produce harmful substances, harmful substances, but what will it? I have a simple analysis of what, for reference only!
Harmful substances in the production process of silicon carbide are the following categories:
An atmospheric pollutants: dust, smoke, carbon monoxide (small), carbon dioxide (a lot), according to the impurities contained in the abrasive material used may also contain various sulfur dioxide, nitrogen oxides, etc.
2, water pollution: mainly salty higher if near farmland and lakes, while the outside row of the main plant in the form of sewage treatment, the contamination can be imagined.
3, light pollution: the production process requires ignition operations, open burning is the smelting furnace smelting, there is fire, if the neighborhood is a residential area it certainly will affect the residents' daily rest.
But mainly atmospheric pollution, harm far as to see how the wind plant location, this project is now disallowed smelting projects, the State restricted projects.