Silica, silicon carbide, silicon carbide, also known as carbon refractory sand, is made of quartz sand and petroleum coke, sawdust and other raw materials in smelting in electric resistance furnace, high temperature and be become.Green silicon carbide black silicon carbide and silicon carbide two commonly used basic varieties: (1) black silicon carbide containing SiC by about 95%, its toughness is higher than the green silicon carbide, mostly used for processing low tensile strength of material, such as glass, ceramics, stone, refractory material, cast iron and nonferrous metal, etc.;(2) the green silicon carbide containing SiC98 % above, good self-sharpening, mostly used for processing hard alloy, titanium alloy and optical glass, also used for honing cylinder jacket and fine grinding HSS cutting tools.
Walnut shell is a kind of degreasing, crushing, screening and other processing processed particle, surface pore, the adsorption effect fabric better polishing abrasive.
A compressive ability strong, walnut shell grain particle size 1.25 1.60 mm, the average compressive strength limit of 0.2295 KN (23.40 KGF).Walnut shell grain particle size 0.80 1.00 mm, the average compressive strength limit of 0.165 KN (16.84 KGF).
Second, stable chemical properties, does not contain toxic substances, dissolved in acid, alkali, water volume is small, loss of walnut shell in hydrochloric acid solution was 4.99%, the attrition rate was 3.8% in sodium hydroxide solution, does not cause deterioration of water quality.
"Walnut shell application and indicators"
1, water filtration materials applications
Walnut shell filter material products are widely used in oil field, chemical industry, leather and other industrial wastewater treatment and urban water supply and drainage engineering, is the most ideal water purification filter material of various filters.
Emery general term, silicon carbide, also can be brown fused alumina, also can be a black corundum (SiC, also known as silicon carbide), or white corundum.Pure is a colorless crystals, density of 3.06 ~ 3.20.Hardness is very big, is about 9.5 degrees Morse, generally is colorless powder particles, after grinding, can be used as a polishing powder, polishing paper could be prepared, but also grinding wheel and strop friction surface.By the sand and the right amount of carbon in electric furnace to strengthen heat.
emery characteristics
Emery inside contain no cause silicosis free silicon harmful substances, do not contain toxic or radioactive pollution of heavy metals, because the product density is larger, seldom produce dust, effectively guarantee the operator's health, in addition, the characteristics of the low consumption and recycled products can greatly reduce the waste after the products use processing and cost.
Corn cob and broken and corn cob is selection of quality for cream-colored or yellow-brown, with uniform particle size, suitable hardness, good toughness, strong water imbibition, wear-resisting performance is good wait for an advantage, in use process is not easy to break.Corn cob powder particles is the replacement of the past all sorts of wheat class granular powder, water cut of 5.0, crude protein, crude fiber, 5.7 5.7, the proportion of 0.3 0.35, the adsorption capacity of 50-70, is a production of veterinary drugs carrier, carrier is bean cake powder and other alternatives, mainly for the production of madurai, doxycycline, choline, vitamin, premix and feed additives and so on more than a dozen varieties of veterinary drugs and feed additives, it has a lower cost than other carrier, long shelf life, good liquidity, water imbibition is strong, good palatability.As a carrier for the corn cob granule powder production of veterinary drugs shelf life for three years for stability, various indexes and microbial indexes meet the domestic and international standards, low cost, good and inexpensive.
Chinese name: cyanite;Mullite, rich aluminum andalusite;sillimanite
English name: Aluminum silicate;Aluminosilicate;Ceramic fibre;Cyanite;Disthene;Kaopolite;Kyanite.Mullite;Safe - n - dri;Silicic acid aluminum salt
Mullite is aluminum silicate at high temperatures generated minerals, artificial heating will form mullite aluminum silicate.Natural mullite crystals as elongated needle and radiation clumps.Mullite ore is used to produce high temperature refractory materials.It has the expansion uniformity, excellent thermal shock resistance, high load softening point, high temperature creep value is small, high hardness, good resistance to chemical corrosion, there are mainly high purity fused mullite, fused mullite sintered mullite, all natural bauxite concentrate and light mullite.
Bauxite is also called the alumina or bauxite, main ingredients are aluminum oxide, hydrate alumina containing impurities, is a kind of soil minerals, white or gray, brown yellow or light red by iron.
Floating bead is a kind of can float to the surface of fly ash hollow ball, are pale, thin wall hollow, weight is light, Drift beads of the chemical composition is given priority to with silica and 3 oxidation 2 aluminium, with a fine grain, hollow, qualitative light, high strength, wear resistance, high temperature resistant, thermal insulation, insulation, flame retardant, and other features, is one of the raw materials are widely used in refractory industry.
Alumina powder using industrial alumina, aluminum hydroxide plus additive technology, low temperature phase inversion after calcining, again USES the advanced grinding technology and process, the activity of producing alumina powder, its characteristic is active, fine granularity.Particularly applicable to finalize the design product and refractory castable, plastic, repair materials, gunning materials, daub materials such as monolithic refractories, to improve the refractory material of high temperature strength, improve the erosion resistance of has a strong role.
Alumina powder is made of white corundum industrial raw material, the arc after cooling in integrated by more than 2000 degrees high temperature melting, after smashing plastic, magnetic separation to iron, screen is divided into a variety of particle size, dense texture, high hardness, granular form sharp corners, consolidation is suitable for making ceramic, resin abrasive and grinding, polishing, sandblasting, precision casting, etc., can also be used for manufacturing advanced refractories.Product size according to the international standard and national standard production, granularity processing according to user requirement.Gm grain sizes of the F4 ~ F220, its chemical composition depending on the size of the particle size.Outstanding characteristic is little impact resistance, crystal size in the mill processing, particles are spherical particles, the surface dry clean, easy to bond.
Brown fused alumina introduction
Brown fused alumina, local name, also known as carborundum, is made of alumina, carbon materials, scrap iron three kinds of raw materials in electric furnace melting reduction and made of brown alundum, reason for this name.Brown fused alumina is mainly chemical composition is AL2O3, and its content from 94.5% to 94.5%, the other contains a small amount of Fe, Si, Ti, etc.
Brown fused alumina is bauxite, coke, anthracite as main raw materials, in the Canon of high temperature smelting electric arc furnace and become, use it made of abrasive, suitable for grinding the high tensile metals, such as all kinds of steel, malleable cast iron, hard bronze, etc., also can make advanced refractories.Brown fused alumina with high purity, good crystallization, strong liquidity, low linear expansion coefficient, the characteristics of corrosion resistance.The dozens of refractory production enterprises have proved that the product in the application process has not initiation, not pulverization, not cracking characteristics.Especially its far higher than the traditional brown corundum price, more make it become the best in the brown just the quality of the jade of refractory aggregate and filling material.
Steel fiber refers to the short steel fiber, cutting the wire, and hook on both ends of the style compressed into in accordance with the relevant provisions, has certain strength.Steel fiber is mainly used in the manufacture of steel fiber reinforced concrete and application in the tunnel, industrial floor, etc.
Iron ore iron ore pellets, spraying iron ore, atomized iron ore, iron ore of balancing.Surface roughness of 25-100 um, thereby increasing the contact area on the surface of the metal, improve the coated surface adhesion, to refine metal surface strengthening metal structure, has the remarkable economic efficiency, is the most advanced at home and abroad, the most ideal cleaning blast, rust removal and strengthen of quality materials.
Iron ore by iron pills after heat treatment, high hardness, sharp edges and corners, its broken after the formation of the sharp edges make it has high speed sandblasting etching and scraping characteristics, especially using the etching and scraping to demand higher metal surface treatment, surface treatment is often used for outdoor sand blasting operation project.
White corundum with industrial alumina powder as raw material, regularly over 2000 degrees in the arc after cooling in high temperature melting, after smashing plastic, magnetic separation to iron, screen is divided into a variety of particle size, dense texture, high hardness, granular form sharp corners.
White corundum grinding tool is suitable for manufacturing ceramic porcelain, resin consolidation and grinding, polishing, sandblasting, precision casting, precision casting special corundum), etc., can also be used for manufacturing high-grade refractory materials, code-named "WA" international general standards, national standards are consistent, most for export, supply domestic users also have a certain amount.
Product size according to the international standard and national standard production, granularity processing according to user requirement.Gm grain sizes of the F4 ~ F220, its chemical composition depending on the size of the particle size.Outstanding characteristic is little impact resistance, crystal size if using autogenous grinding machining, particles are spherical particles, the surface dry clean, easy to bond.
Alumina ball is a porous high dispersion of solid materials, main ingredients for alumina (92% or higher), product than major, can greatly improve the grinding efficiency, reduce the milling time, save energy, reduce cost, at the same time effectively increase mill effective volume, thus increasing the amount of grinding material;The high hardness, low wear, can greatly prolong the service life of grinding medium;Products with high whiteness and will not affect by the color of the grinding material.
"Classification of alumina ball"
Alumina ball according to the different alumina content can be divided into: aluminum ball, high aluminum and alumina ball.We usually put 60% 65% alumina content is divided into aluminum ball;75% 80% alumina content are called high aluminum ball, more than 90% of the alumina content for high alumina ball.With high alumina ball and subdivided into 90 porcelain, 92 porcelain, 95 porcelain, 99 porcelain, porcelain and 99 because of its high production cost and the mass production, there are very few large manufacturers at present mainly for the part of special ceramics factory by hand.
Sponge iron is also called the direct reduced iron (DRI), is a high-quality hematite stone as raw material, USES the high quality sponge iron ore, using the REDOX reaction principle, through a filter in addition to rule out in the form of lake pipe, boiler and circulating water dissolved oxygen corrosion after water treatment water dissolved oxygen content can be below 0.05 mg/L.
In rotary kiln, shaft furnace or other reactor, coal, coke, gas or hydrogen gas, iron ore and pellets of iron concentrate in below material melt temperature under the condition of low temperature reduction, become the product of cellular.The reduction of iron with small iron core, like brocade, therefore calls the sponge iron, after cooling, crushing, magnetic separation, can eliminate gangue or other impurities (metallic iron more than 90% of total iron, can be directly used in steelmaking; below 90%, used in the blast furnace or electric furnace ironmaking).
