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显示标签为“Aluminium hydroxide”的博文。显示所有博文

2014年2月25日星期二

aluminum powder product attributes

Performance and advantages:
H&X silicon carbide abrasive sand, powder, brown aluminum oxide abrasive blasting sand: a moderate hardness, high toughness, strong anti-crushing capacity, high temperature anti-oxidation, anti-corrosion, low cost, applicability, and other characteristics.
H&X white fused alumina supplier:
Widely used in abrasives, refractories, sandblasting, grinding and polishing, carborundum wearable Floor, precision casting shell mold production.

2014年2月11日星期二

Classification of silicon carbide

Including black and green silicon carbide, silicon carbide, which: SiC is black quartz sand, H&X silicon carbide manufacturers coke and quality silica as the main raw materials, smelting electric arc furnace. Its hardness between corundum and diamond, corundum higher mechanical strength, brittle and sharp. Green silicon carbide based petroleum coke and quality silica as the main raw material, add salt as an additive, smelting electric arc furnace. Hardness between corundum and diamond, corundum higher mechanical strength. There are commonly two different silicon carbide abrasive H&X white fused alumina supplier, one is green silicon carbide, containing more than SiC 97%, the hard gold is mainly used for grinding tools. Another black silicon carbide, metallic luster, containing more than SiC 95%, the large intensity ratio of green silicon carbide, but lower hardness, primarily used for grinding cast iron and non-metallic materials.

2014年1月20日星期一

The main varieties of garnet

The main species
Purple teeth black deposits in a H&X Carborundum Abrasives of native , mainly produced in many magmatic or metamorphic rocks , the majority of gem garnet found in alluvial placer . Purple teeth black garnet group minerals , chemical composition is more complex silicate minerals ( island silicates ) , usually A3B2 [SiO4] 3 said . Where A represents Ca2 +, Mg2 +, Fe2 +, Mn2 + and other divalent cations , B represents Al3 +, Fe3 +, Cr3 + and other trivalent cations . Crystal morphology was rhombic dodecahedron , or both H&X garnet sand three octahedral poly shape. Granular or massive aggregates . Affected by the composition of the garnet color , showing a variety of colors , which include red red series ' Pink ' purple ' orange ; yellow line includes yellow ' orange ' dense yellow' brownish yellow ; green line includes green ' olive ' yellow and green . Crystal display glass glossy surface , sub- adamantine luster , fracture noticeable oil sheen . Transparent to translucent . Homogeneous body , does not have pleochroism , no birefringence . Garnet can be divided into two series , six main varieties : almandine series ( pyrope , almandine , spessartine ) and andradite series ( uvarovite , grossular , andradite ) .

2013年12月19日星期四

Optical properties of aluminum powder

Aluminium hydroxide by a light color, high- gloss aluminum metal , its smooth surface that reflects visible light, 60% -90% ultraviolet and infrared light , with the object containing aluminum powder paint coating , the surface of silver white light , this is the aluminum light reflection characteristics.
" Color effect" characteristic of aluminum powder
Since aluminum has a metallic luster and a characteristic to be coated parallel to, a vector containing a transparent pigment , a change in the gloss and color shades with aluminum angle of incidence of the incident light and the viewing angle of the light and color change , such feature is called " two-tone effect ." Aluminum in the coating film are arranged at different levels , when the incident light is irradiated to the layers of aluminum flakes , because by passing through the film thickness of the different type of weakening of the light reflected brightness is obviously different . When the inner light into the white fused alumina suppliers -containing layer and a transparent pigment , the pigment particles become incident through the colored light , and then after reflected different levels of aluminum , light metal , and a hue change will occur , and the viewing angle of the incident light gradual angle from the vertical position to move through the different light color and the number of particles of different particle sizes of aluminum , the hue of light reflected light can occur and the metal endless changes . This feature aluminum has been widely used in the paint, as hammer paint or metallic paint .
Floating aluminum powder characteristics
Pigment with a large variety of aluminum and aluminum paste is floating type , which is characterized by scaly film floating on the surface .
5 Application
Applications
Because aluminum has a silver-white metallic luster, so called aluminum silver or silver , its chemical composition is indeed " aluminum" , not " silver ." Applications: powder coating , ink, plastic masterbatch , printing, paper imitation gold , imitation Gold, gold film , textiles, but the use of water-based paints and paint with a pH of oxidized black. Not recommended for applications requiring a combination of acid rain and the occasion .

2013年12月14日星期六

Details about the garnet abrasive

Garnet is a island structure of calcium silicate, aluminum on mineralogy divided into two categories: department of aluminum oxide and black silicon carbide oxide. The chemical composition of garnet change is bigger, general chemical formula for the A3B2 [SiO4] 3, which represents A divalent calcium, magnesium, iron, manganese and other cations, B on behalf of trivalent aluminium, iron, chrome, manganese and other cations. Garnet generally is the crystallization of the sizes of particles, with moderate hardness, high melting point, good chemical stability, color according to different products and structure, present a different color, a dark red, red, pink, black, brown, etc. Garnet with moderate hardness, good toughness, particle size uniform, it is a good natural abrasive. In the optical industry, electronic industry, machinery industry etc widely used. Such as:
(1) in the high pressure water jet equipment (water knife cutting abrasive;
(2) the sandblasting derusting, cutting, special welding and thermal spraying, manufacturing grinding wheel, oilstone, emery cloth and garnet sand paper raw materials;
(3) used as water treatment filter medium;
(4) of silicon wafer, optical lenses, precision instruments and meters, polishing glass shell, glass, ceramic, stone, leather, plastic, metal parts can improve finish;
(5) can be used as building highway pavement, airport runway, wear-resisting rubber, industrial floor. Antiskid considerations of wear-resistant materials such as paint;
(6) for chemical, petroleum, pharmaceutical, water treatment filter medium and drilling mud weighting agent;
(7) can be used for washing factory jeans with sand sand workshop, etc

2013年11月6日星期三

Brown fused alumina major functions


Brown fused alumina with high temperature resistance, corrosion resistance, high strength, such as performance, so use casting steel slide gate, and special alloy smelting rare metals, ceramics, blast furnace lining; Physical and chemical vessels, spark plugs, heat-resistant oxidation coating; Corundum heat preservation material, which are widely used in all kinds of high temperature furnaces furnace wall and furnace top, high temperature resistant and heat preservation.
Brown Corundums sand particle size is by the artificial corundum block, using the equipment such as roller, ball mill, the mark, it is mainly used for polishing, grinding, grinding industry, etc., can also according to customer requirements for water washing, acid pickling treatment methods such as processing, able to meet the different needs of customers.

2013年11月4日星期一

Purifying quartz sand - chemical method

Quartz purification chemical method is mainly acid leaching method and the complex legal, acid leaching method is to use quartz insoluble in acid (except for HF) and other impurities minerals can be the characteristics of the acid dissolution, which can realize further purification of quartz. Ways is to use quartz powder after pickling, acid and can form a coordination compound and the impurity ions in solution, further to remove the impurity ions in solution.Acid leaching method is divided into single acid leaching method and mixed acid leaching method. Acid leaching is often? With acid with sulfuric acid, Aluminium hydroxideacid, nitric acid and hydrofluoric acid. Complexation is often with acids mainly oxalic acid and acetic acid (more)Crusher andKunming crusher technical details please visit kunming kunming andKun ding ChongJi beneficiation plant network). The acids of metal impurity in quartz mineral has a better removal effect. Various dilute acid on Pe and A1 removal effect is obvious, and the removal is the main use of Ti and Cr relatively concentrated sulfuric acid, hydrofluoric acid and aqua regia. The main factors influencing the effect of acid treatment is acid concentration, temperature, time and washing process, etc. 2.1 single acid leaching method to put a certain amount of quartz sand in a certain concentration of acid solution, heated to a certain temperature, heating time appropriately, the acid solution recycling, quartz sand after washing and drying. Somewhere in sichuan containing silty clayey diatomite l 'oJ, using sulfuric acid as acid infusion, by means of temperature, concentration of sulfuric acid and the study of liquid-solid ratio, it is concluded that when the temperature is 90 ℃, sulfuric acid concentration was 40%, the liquid-solid ratio of 10:1, the leaching rate of diatomite railway, best Fe20, decreased from 3% to 3% to 3%, and the content of A1203 content also decreased from 9.55% to 9.55%, and the diatomite in the SiO: content rise to more than 80%. Zhou Yongheng on acid leaching of quartz purification experiment study, through to the hydrofluoric acid pickling temperature, concentration, time of the study, the results show that when the raw material for vein quartz powder in the temperature of 120 ℃, HF, and the proportion of water in a solution of 0.4-0.5 0.5 6 h acid leaching, the purity can be reached the standard of high-grade quartz glass. 2.2 mixed acid leaching methodBecause each kind of effect of removal of impurities of quartz sand is different, different acid mixed together, produce synergies, impurity removal rate higher in the quartz sand, can obtain higher purity quartz sand. Will be washed after quartz sand to join the acid mixture, at room temperature, agitation leaching, clearance generally time for 24 h, if under the condition of heating, using agitation leaching, time is usually 2-6 h, washing dry can. Zhang Chang use at room temperature, such as 18% hydrochloric acid and silicon powder 1.5:1 the liquid-solid ratio, then with 25% sulfuric acid, sulfuric acid and silicon powder liquid-solid ratio of 2:1 in second acid leaching, acid leaching time were used in the 12 h, after two times of acid leaching purification treatment of micro silicon powder fe content < 60 ug/g. Washing of the quartz sand by 20% - 80% of the solid mass fraction with the slurry release containers of mechanical agitator, then add in hydrochloric acid solution (1% 10%) and fluorosilicic acid solution (1% 10%), quartz sand and solution in 75-100 'C temperature mixing 2 to 3 h, and then remove the slurry solution, washing with water several times, until cleaning solution pH value is close to neutral. Use this method to deal with, can reduce the iron content of quartz sand from 0.0059% to 0.0059% - 0.005%. Shen Jiu proportion of mixed acid used for sulfuric acid, hydrochloric acid, nitric acid, hydrofluoric acid 50% : 25% : 15% : 10%, heated to 80 ℃, the concentration of the leaching pulp is 50% - 55%, the content of the silica and iron impurity content reached the standard of high purity quartz sand (SiO2 99.98% or higher, Fe2O3 0.001% or less). 2.3 complex legal ways is a kind of medium strength of organic acids, react with impurities on the surface of the quartz silica sand, and also with the reaction of impurity ions to form stable coordination compounds, and reduces the concentration of impurity ions on the surface of the particles, as well as prevent ion precipitation in the process of washing, further reduce the impurity content in the quartz sand. Panias etc., 120, the average particle size of 20 LTM iron content is 110 x10 ° of quartz sand, said take a certain amount in oxalic acid solution, under heated to 80 ℃, the processing time is 3 h, can dissolve including iron ore, in acidic solution can only exist in the form of Fe3 ', Fe3 + again with oxalic acid to form stable chelate, the iron removal rate between 80% and 100%, after processing, iron content in the quartz sand below 10 x10 ~. - Hunan province LiuYangShi quartz sand, after dealing with the oxalic acid, the sample of SiO2 content increased from 98.26% to 98.26%, A1203 decreased from 0.18% to 0.18%, and the content of Fe203 content reduced to 0.10%. Acid used in the above are available evaporation, condensation, or other methods to achieve the purpose of regeneration and reuse. When Si02 require high purity, acid cleaning of water must be distilled water or deionized water, avoid tap water contains impurities such as iron cause pollution to the high purity Si02.

Purifying quartz sand - physical method


Physical purification quartz Silica sandis washed and classification desliming, scrub, magnetic separation, flotation and ultrasonic method.
1.1 washing and classification desliming this approach is mainly aimed at containing a large amount of clay minerals quartz sand. Because as quartz sand particles and the grade of the SiO2 decreases, and the grade of iron and Aluminium hydroxideimpurities such as mineral increase, so the rounding out the top of water concentration and classification of quartz sand ore desliming is very necessary, and the effect is also evident in the 18 j. It only as a method of the pretreatment of the ore candidate before application earlier are also common, but for the exist in the thin film on the surface of the quartz sand iron and adhesion impurity minerals, its removal effect is not significant. Scrubbing is 1.2 with the help of a mechanical force and sand grain peel force to remove the film on the surface of the quartz silica sandgrinding impurity iron, bonding and clay mineral and further chopped into single mineral aggregate, then through classification work to achieve the effect of quartz sand further purification. At present, the main two methods have good friction and mechanical scrubbing washing. For mechanical scrubbing, the related mechanical equipment structure, configuration and process flow of scrubbing washing time and concentration are the main factors influencing the scrubbing effect. Due to the factors that affect it too much, make the mechanical scrubbing the recovery rate is very low, only about 40%, so the mechanical scrubbing effect is not ideal. Compared with the mechanical scrubbing, great friction wash effect is much better than it. In great friction washing process, add the appropriate reagents, increase of impurity mineral and quartz particles on the surface of the electric repulsion, enhance impurity minerals and quartz particles mutual separation effect, increase the recovery rate of scrubbing to 80%, great friction wash is almost twice the mechanical scrubbing, but for the purification of high purity quartz sand, it is just a way of ore pretreatment. 1.3 magnetic separation magnetic separation method can remove the quartz sand particles maximum contains some impurities, hematite, limonite and biotite of weak magnetic impurities such as minerals and strong magnetic minerals mainly magnetite. Mineral often choose for weak magnetic impurities in strong magnetic machine more than 100000 e, for strong magnetic mineral impurities often adopt magnetic machine in the weak magnetic machine or magnetic separation. In general, the number of magnetic separation and magnetic field strength has important influence on magnetic separation effect of iron, with the increase of the number of magnetic separation, the iron content gradually reduce; And under a certain magnetic field strength can remove most of the iron, the magnetic field intensity even improve a lot since, in addition to iron rate also do not have changed much. In addition, quartz sand particle size is fine, in addition to iron, the better the results, the reason is that fine particle high mineral content of iron impurities of quartz sand. Tian Jinxing in experimental research progress of the study on the purification technology of high purity quartz sand, the results show that along with the increase of magnetic field intensity, impurity removal rate rise, magnetic field intensity of 100000 e, impurity removal rate increase is not obvious. Therefore appropriate magnetic field strength should be 100000 e. After magnetic separation, 40 mesh Si02 grade can reach 99.05%, with 0.071% Fe203:40-80 mesh Si02 grade is 99.09%, 0.070% Fe203 content; 80-140 mesh Si02 grade is 99.14%, 0.067% Fe203 content: 140-200 mesh Si02 grade is 99.10%, 0.069% Fe203 content. But are too many impurities in the quartz sand, especially containing more weak magnetic or nonmagnetic impurity, with magnetic separation is not only purified into high purity quartz sand. 1.4 flotation
Flotation is to remove the quartz sand in feldspar, mica and other non-magnetic minerals associated impurities. At present there are mainly with fluorine flotation and two methods of fluorine-free flotation. Fluorine flotation is using cationic collector and hydrofluoric acid as activator in the acidic pH range. But given the fluoride waste water serious impact on the environment, people are turning to non-fresno flotation. Use of quartz, feldspar differences in structure, reasonable ratio of ion of Yin and Yang of mixed collector with depth and dosage, using their Zeta potential of different, preferential flotation of feldspar, realize the separation of the two llo,. Have been reported in the neutral condition, join non-fresno flotation reagents, the silica micro powder Si02 content increased from 99.1% to 99.1%, accordingly Fe203 content decreased from 0.081% to 0.081%, a 85% yield at 83%. This indicates that no flotation can significantly improve quality of silica micro powder. Shang Yafei, sodium hexametaphosphate as dispersant and flotation agent, twelve amine collector, can remove the iron impurities from quartz fine powder, Fe2O3 content from 0.09% to 0.02%, the yield reached 85%. 1.5 the ultrasonic method, ultrasonic method is a kind of sound waves, depending on the media to spread it is mechanical energy, in the heart of the communication process will cause interaction with the media, to produce a variety of effects (mechanical effect, thermal effect and the cavitation effect). Using ultrasonic grinding head on the liquid, the liquid internal changes, pressure or tension, when the tension reaches a certain intensity, produce cavitation effect, causing the tiny bubbles, the bubbles with ultrasonic vibration is compressed stress decreased; When the bubble reaches a critical scale (the scale determines the frequency of the ultrasonic wave), the bubble will burst, produce a great pressure, engaged in fierce impact of solid particles in liquid, under the intense impact, trace impurity or water film on the surface of the particles, quickly from the particle surface spalling, suspended solids under the action of dispersant, become a subtle, from quartz sand, after washing the separation, to make the purity of quartz sand is greatly improved. Liao Qing in water and a small amount of dispersant media such as medium, the 0-15 mm depositional quartz sandstone particles, powder by ultrasonic treatment, including Fe2030.12 %, quartz sand to contain Fe2030 S10299.42 %. 01%, 8 i0299. 8%, recovery rate over 99%, reached the standard of optical glass with sand.

2013年9月17日星期二

Corundum brief analysis of the composition and uses

Corundum based on industrial alumina powder as raw material in the arc by melting temperatures above 2000 degrees made. Corundum main chemical ingredient is AL2O3, the content of a 98.65% -99.37 % , and the other a small amount of Fe, Si, Ti and so on. Corundum behalf # "WA" on internationally accepted standards, national standards, most for export, there is a certain amount of supply domestic users . 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 .
Corundum is high-quality aluminum oxide powder as raw material , through the fused corundum sand refining crystal, high purity, good self-sharpening , acid corrosion , high temperature, thermal properties and stability. Slightly higher than corundum corundum hardness , toughness slightly lower , high purity, good self-sharpening , grinding ability , heat a small , high efficiency, acid and alkali resistance , high temperature resistance and good thermal stability . Made with corundum abrasive sand , suitable for grinding high carbon steel , high speed steel and stainless steel fine-grained abrasive . Corundum of sand can also be used for precision casting and high-grade refractory .

2013年9月11日星期三

Good or bad way to distinguish quality corundum

Corundum as one of the common resistant material , often involved in the manufacture of wear-resistant products . Especially the production of wear-resistant castable . Castable kind of common ways of its production is to corundum powder and bauxite with a certain proportion of the mixer is made in accordance with certain resistant castable . The material can be used as a variety of high-temperature furnace masonry materials can also be made using prefabricated parts or unfired brick . Corundum in industrial applications , there are many , then how to distinguish corundum and the bad?
Corundum is made ??of carbon , Alumina Oxide , iron three kinds of raw material refining , because the color of iron should be presented so that high-quality brown corundum , corundum observed color is a way to distinguish . Three brown fused alumina is the composition of substances. Three alumina content is directly related to how much good or bad quality corundum . Corundum is divided into three , one of the best is a corundum , followed by two and three , corundum quality standards is mainly to see where AL2O3 content , content of more than 95% of a corundum, that is, we often say that the 95 corundum . Two and three corundum corundum content progressively reduced , the quality decreases. You can see the color purity corundum to distinguish , as corundum containing Fe (iron ) elements , Fe element is reddish-brown , tan it rendered as corundum , you can see by looking at the color to identify the level and quality of corundum .

2013年9月6日星期五

The use of alumina , alumina is mainly used in what areas

Alumina is a white amorphous powder , commonly known as bauxite , density 3.9-4.0g/cm3, melting point 2050 ℃, boiling point 2980 ℃, insoluble in water, aluminum oxide mainly two kinds of α -and γ variants industrially from bauxite is extracted .
Now a lot of aluminum products such as : aluminum hydroxide, alumina, calcined alumina high temperature alumina purity alumina industrial grade white aluminum hydroxide aluminum hydroxide, aluminum hydroxide toothpaste grade agate grade aluminum hydroxide filler grade aluminum hydroxide and so on. Wide range of applications regardless of alumina products economic development or life has its existence, it has played an unparalleled role.
Specialty alumina refractory varieties: Advanced ceramic refractory products fiber products as well as lightweight insulation products unshaped products , with its main application areas are:
( 1 ) ultra-high temperature kiln lining structural materials.
( 2 ) high purity metal alloys with rare metals smelting crucible purification .
( 3 ) high-temperature tube furnace thermocouple tube heat insulation.
( 4 ) high-temperature kiln sticks and briquetting pressure washers , etc.
( 5 ) Petroleum and Chemical Industrial temperature corrosion-resistant lining material .
( 6 ) do transparent alumina ceramic high-temperature high-pressure sodium viewing glass tube microwave hood .
( 7 ) in the electronics industry to make the circuit substrate voltage ceramic shell and tube seat tube radome spark plugs and so on.
( 8 ) grinding tools and abrasives such as grinding wheel cutting disc Dies La Sita round nozzles textile porcelain pieces and a variety of high-temperature resistant bearing props .
( 9 ) Chemical Industrial Piston Pump Parts sealing ring.
( 10 ) ferrous metallurgy industry molten metal pipe.
( 11 ) in various industrial sectors such as high-temperature energy-efficient materials like alumina hollow ball alumina whiskers, alumina fiber and products .

2013年7月30日星期二

The purpose and effect of quartz sand

Quartz sand is an important industrial mineral raw materials, widely used in glass, foundry, ceramics and refractories, metallurgy, construction, chemicals, plastics, rubber, abrasive and other industries.
Applications \ Application:
Glass:
Flat glass, float glass, glass (glass jars, bottles, glass, etc.), optical glass, glass fiber, glass instrument, conductive glass, glass cloth, and radiation-shielding the main raw material of special glass.
Ceramics and refractories:
Blank porcelain and glazes, kilns with a high silica, silica and silicon carbide and other common materials.
Metallurgy:
Silicon metal, ferrosilicon and silicon aluminum and other raw materials or additives, flux.
Construction:
Concrete, cementitious material, road building materials, artificial marble, cement physical performance test material (ie cement standard sand) and so on.
Chemicals:
Silicon compound and water glass and other raw materials, sulfuric acid tower fillers, amorphous silica powder.
Machinery:
The main raw material foundry sand, abrasive material (sand, hard abrasive paper, sandpaper, emery cloth, etc.).
Electronics:
High purity silicon metal, communication with optical fiber.
Rubber & Plastics:
Filler (can improve the wear resistance).
Coatings:
Fillers (which can improve the coating weatherability).
Quartz crystal is actually referred to, as may be used as a mineral crystal, are made of quartz Cutting outputs; identification of other components are the same characteristics, except that the crystal is used as a material gem; the silica after staining, Most only as a kind of imitation jade.

2013年7月23日星期二

What is corundum

White fused alumina powder as raw materials in industry, at more than 2000 degrees by arc melting temperature after cooling is made by crushing plastic, magnetic separation to iron, sieving into a variety of particle size, its texture is dense, high hardness, grain formation of sharp corners form for use in manufacture of ceramics, resin bonded abrasives and grinding, polishing, sandblasting, precision casting (casting special corundum), etc., can be used to manufacture high-grade refractories, code-named "WA" on internationally accepted standards, national standards , the majority for export, there is a certain amount of supply domestic users.
Particle size in accordance with international standards and national standards of production, processing granularity according to user requirements. General size number of F4 ~ F320, depending on its chemical composition and different particle sizes. Prominent feature is the small crystal size, impact resistance, if the self-processing mill crushed particles are mostly spherical particles, dry surface cleaning, easy binding agent combination.
Corundum density:
Density is divided into two, one corundum bulk density, the second is the true density corundum.

2013年7月19日星期五

Stone processing abrasive composition and classification

Is abrasive abrasive, binders, fillers, porosity, and attachments and other components.
The basic requirements of the abrasive:
1, the hardness is higher than the hardness of the material to be processed;
2, has a certain toughness and strength, and with sharp skills.
3, should have a certain degree of mechanical strength.
4, maintaining the inherent high strength and hardness (hardness or thermal stability or red).
Abrasive Category:
Abrasive for natural and artificial sources can be divided into two categories, according to the nature of abrasives and super abrasives can be divided into two general categories.
Common natural abrasives:
A natural diamond: diamond abrasive with high efficiency, long life, low cost, good quality grinding series of advantages.
2, quartz sand: also known as silica sand, 95% of the particles of quartz sand.
3, garnet sand: to loose abrasives for cutting soft marble blocks.
4, natural corundum: mainly composed of A1203. Mohs hardness of 9, second only to diamond.
Commonly used artificial abrasives:
1, corundum: Suitable for grinding the tensile strength of the material, the price is cheaper.
2, corundum: grinding capacity slightly higher than corundum (0.12 for the diamond). Moderately fine grinding.
3, chromium corundum: purple or pink, slightly higher than corundum grinding capacity (as diamond 0.13), especially for the profile grinding. Widely used alloy gears, cutting tools, thread management tools and instruments of precision grinding parts.
4, SiC: commonly known as carborundum, its ability to wear diamond 0.25-0.28, brittle and sharp, is very versatile and an abrasive.
5, synthetic diamond: wear ability and natural diamond almost there in the stone industry will gradually replace traditional.

2013年7月5日星期五

Alumina refractory concrete application of special

Specialty alumina refractory varieties: Advanced ceramic refractory products fiber products as well as lightweight insulation products unshaped products, with its main application areas are:
(1) ultra-high temperature kiln lining structural materials.
(2) high purity metal alloys with rare metals smelting crucible purification.
(3) high-temperature tube furnace thermocouple tube heat insulation.
(4) high-temperature kiln sticks and briquetting pressure washers, etc.
(5) Petroleum and Chemical Industrial temperature corrosion-resistant lining material.
(6) do transparent alumina ceramic high-temperature high-pressure sodium viewing glass tube microwave hood.
(7) in the electronics industry to make the circuit substrate voltage ceramic shell and tube seat tube radome spark plugs and so on.
(8) grinding tools and abrasives such as grinding wheel cutting disc Dies La Sita round nozzles textile porcelain pieces and a variety of high-temperature resistant bearing props.
(9) Chemical Industrial Piston Pump Parts sealing ring.
(10) ferrous metallurgy industry molten metal pipe.
(11) in various industrial sectors such as high-temperature energy-efficient materials like alumina hollow ball alumina whiskers, alumina fiber and products.