Wholesale cheap welcome to discuss expanded vermiculite

Vermiculite is a natural, non-toxic mineral, it will be expanded under high temperature minerals. It is a relatively rare mineral, belong to silicate. Its crystal structure is monoclinic, from the shape it looks like mica. Vermiculite is produced when certain granite hydration. It is generally associated with asbestos while producing. Due to the ability of vermiculite ion exchange, its soil nutrients have great effect. 2000 world output of over 500,000 tons of vermiculite. The main producing countries are China, South Africa, Australia, Zimbabwe and the United States. Contents 1 vermiculite? Crystal chemistry? Structure and Form? Physicochemical properties? Occurrence and composition 2 applications? The main purpose? Different sheet path 3 is formed of vermiculite application distribution? Formation and origin? Vermiculite Vermiculite feature 4? expanded vermiculite Shijie Shao? agriculture? horticultural vermiculite 5 Specifications 6 7 8 production storage and edit basic information a vermiculite vermiculite (Vermiculite) (Mg, Ca) 0.3-0.45 (H2O) n {(Mg, Fe3, Al) 3 [(Si, Al) 4O12] (OH) 2} Name of vermiculite from the Latin, with a "worm-like", "worm track shape" means. Vermiculite is suddenly heated to 200 至 300 ℃ will produce worm-like peeling along the c axis of the crystal, which it derived its name. Vermiculite is a layered structure of magnesium aluminum silicate secondary water metamorphic minerals, ore shape like mica, usually consists of black (K) mica by hydrothermal alteration or weathering, because heat loss When the water-swellable deflection was like, shape resembles leech, it said vermiculite. Vermiculite is a similar montmorillonite clay minerals, silicate layered structure. Usually made by hydrothermal biotite alteration or weathering. It sometimes looks coarse biotite appears (this is the illusion of biotite vermiculite), sometimes subtle shape have become soil. When the vermiculite is heated to 300 ℃, it expanded 20-fold and bend. This time, a bit like a leech vermiculite (commonly known as leech), so it has such a name. Vermiculite is generally brown, yellow, dark green, shiny, like oil, is grayed out after heating. Vermiculite used as building materials, adsorbents, fireproof insulation materials, machinery lubricants, soil conditioners, etc., widely used. Vermiculite Shijie Shao: First, the nature and structure of vermiculite Vermiculite main chemical formula (Mg, Ca) 0.7 (Mg, Fe, Al) 6.0 [(Al, Si) 8.0] (OH4.8H2O). Common formula (Mg2.36Fe0.48Al0.16) (Si2.72Al1.28O10 (OH) 2) (Mg0.32 (H2O) 4.32) vermiculite can stage can be divided into vermiculite and vermiculite, press Colors can be divided into golden vermiculite, silvery white vermiculite, white vermiculite. Vermiculite high temperature firing the rapid expansion of its volume can be 6-20 times, after the expansion of the proportion of 60-180kg / m3, with strong thermal insulation properties. Vermiculite uses: The main purpose of building applications in the field of lightweight material lightweight concrete aggregate, lightweight wall powder, light mortar fire resistant material wall materials, fire board, fire mortar, brick insulation, heat insulation, sound-absorbing materials pipes, pipe insulation material greenhouse, indoor and tunnels built in public places covering the walls and ceiling of metallurgical steel timber, iron, steel casting impurity rise building cladding materials, vermiculite bulk agriculture, forestry, fishing and gardening Warm Sticker see section on garden soil conditioner, plant production, feed additives and other marine fishery bait other sorbent, filter aid, fertilizer active carrier, sewage treatment, water adsorption oil market to Vermiculite Vermiculite Useful (10) Vermiculite chemical composition (%) SiO2 Al2 O3 Fe2O3 MgO H2O 37-43 9-17 5-24 11-23 0.5-9 1: the expanded vermiculite slab on the roof, can play a very good compartment temperature effect, so that building homes cool. Vermiculite brick brick high-rise building wall panels, can go to the noise, fire, moisture and other effects, but also reduce the load floor. 2: Vermiculite is used in the greenhouse, with loose soil, good air permeability, water resistance, temperature and other characteristics, it is conducive to crop growth, and can reduce fertilizer inputs. In the nascent soilless cultivation technology, it is the essential raw materials. 3: vermiculite insulation adhesive mix and the amount can be made of an insulating board. 4: Vermiculite is also used in medicine, animal feed and other lines. Crystal chemistry of tetrahedral Al instead of Si film is generally 1/3 ~ 1/2, but also have Fe3 instead of Si. Al, Fe3 instead of Si is the main reason for the charge generating layer. Charge the number of units of the formula is between 0.6 to 0.9. Charge compensation layer on the one hand is replaced by octahedral Al Mg cause, the other from the interlayer cations. Mg-based interlayer cation can be Ca, Na, K, (H3O), and Rb, Cs, Li, Ba and the like. Octahedral sheet main cation is Mg, can also have Fe3, Al, Cr, Fe2, Ni, Li and the like. Interlayer water content depending on the interlayer cation hydration capacity and ambient temperature and humidity. Mg-containing high water hydration capacity, at high temperature and humidity, the unit of the formula can contain four to five water molecules; and when hydrated cations of weak Cs, can be almost free of water molecules. Structure and Form monoclinic; a0 = 0.535nm, b0 = 0.925nm, c0 = n * 1.45 nm, β = 97.07 '; Z = 2. It is common to Mg cations inter-layer lattice constant of the main three octahedral vermiculite. The lattice constant of two octahedral vermiculite is slightly different. Crystal structure of 2: 1 (TOT) type. Tetrahedral sheet and a charge generating layer is replaced by the Al Si, resulting in an interlayer filling exchangeable cations and water molecules. Water, hydrogen and oxygen molecules bridge structure layer surface associated, in the layer of water molecules hydrogen bond with each other to each other again weak link. Part of the water molecules surrounding the interlayer cations formed octahedral ligand, form a hydrated complex ion [Mg (H2O) 6] 2, occupies a fixed position in the structure; part of the water molecules in free state. This configuration features make Vermiculite has a strong cation exchange capacity. Under normal temperature and humidity, Mg saturated vermiculite c0 is 1.436nm, interlayer with double layer of water molecules, but the water molecule layer is incomplete. After water saturation c0 increased to 1.481nm, this time filled with the interlayer is complete layer of water molecules. By slowly heating the vermiculite partially dehydrated, its c0 becomes the 1.436 1.382nm. Continue dehydration, double water molecules will be reduced to a single layer of water molecules, c0 becomes 1.159nm. And then continue to dehydration, will become completely dehydrated structure (c0 = 0.902nm) containing single water molecule structure (c0 = 1.159nm) alternate arrangement structure, which c0 is 2.06nm. After completely dehydrated then becomes structurally similar to talc, c0 is 0.902nm. Vermiculite is heated to 500 ℃ dehydration at room temperature once again placed absorbent; but after heating to 700 ℃ no longer absorb water. Physical and chemical properties often depend biotite or phlogopite was false. Mostly brown, brown, gold, bronze, sometimes greenish. Shiny mica relatively weak, oil sheen or pearly. Cleavage completely, there is a flexible sheet. Hardness of 1 to 1.5. The relative density of 2.4 to 2.7. Polarizing microscope: multicolor colorless to light brown. Biaxial crystal (-), the incident angle is small. Ng = 1.545 ~ 1.585, Nm = 1.540 ~ 1.580, Np = 1.525 ~ 1.560. Cation exchange and adsorption;; expandable vermiculite also has good water absorption; sound insulation; heat insulation and fire resistance; freezing tolerance; stable chemical properties of exfoliated vermiculite. Insoluble in water. pH value of 7-8. Non-toxic, tasteless, no side effects. Occurrence and composition mainly biotite and phlogopite low temperature hydrothermal alteration product. Part vermiculite biotite formed by weathering and slow. [Identifying characteristics] appearance and biotite similar, but luster, cleavage degree of hardness, elasticity compared with biotite flakes weak. When burning strong volume expansion of its main features. 2 Application Specification editor main purposes: 8-12MM, 4-8MM, 2-4MM, 1-2MM, 0.3-1MM, 40-60 mesh, 60-80 mesh, 80-100 mesh, 100 mesh, 150 mesh, 200 mesh, 325 mesh and other specifications can be produced on request. Raw vermiculite after high temperature baking, the rapid expansion of its volume can be several times to several times, the volume of the expanded vermiculite called expanded vermiculite, which is a layered structure, the interlayer crystal water, bulk density 50-200kg / m3, small thermal conductivity, good insulation material. Good quality vermiculite, maximum temperature up 1100 ℃. In addition, expanded vermiculite has good electrical insulation properties. Vermiculite is widely used in insulation, fireproofing materials, nursery, flowers, trees, friction materials, sealing materials, electrical insulating materials, paint, lumber, paint, rubber, refractories, water softener, metallurgy, construction, shipbuilding, chemical and other industries. The expanded vermiculite use is widespread, but its main purpose is still to make building materials. US consumption structure in 1986 and used as a pre-mixed mortar and cement materials and lightweight concrete aggregate expanded vermiculite (52%); British used concrete, plastering mud, cement coagulant accounted for 40%. The main purpose of vermiculite: Construction: lightweight material lightweight concrete aggregate (light wall powder, light mortar) Vermiculite Vermiculite wall material resistant materials, fire board, fire mortar, brick insulation, separated Heat: sound-absorbing materials, underground pipes, greenhouse pipes, insulation materials, indoor and tunnel interior walls and ceilings in public places metallurgy: coated sheet steel, iron, cast steel slag rise building cladding materials, vermiculite stone bulk agriculture, forestry, garden: gardening golf course lawn seed preservatives, soil conditioners, humectants, plant growth, feed additives marine fisheries: fishing erbium other areas: sorbent, filter aid, chemicals and active carrier of fertilizer, sewage treatment, water oil adsorption, cigarette filters, explosive density modifiers. Different sheet path vermiculite application sheet sizes is different for different purposes vermiculite +20 Head: Housing insulation equipment, household refrigerator, car muffler, sound stucco, safes and vaults lined pipes, boiler thermal protection clothing , ironworks ladles, insulating firebrick cement 20 to 40 mesh: car insulation equipment, aircraft insulation equipment, cold storage insulation equipment, buses insulated equipment, wallboard water cooling tower, steel annealing, fire extinguishers, filters, refrigeration Library 40-120 Head: linoleum, roof panels, cornice, dielectric plates 120 to 270 mesh gates: burnt wallpaper print, outdoor advertising, paint, increasing the viscosity of paint, photography soft wood with fire cardstock -270 mesh : gold and bronze ink, paint the outer supplements 3 form distribution edit form and origin in nature in solution Springs generated by biotite and other minerals. In nature they are mixed with the soil clay together, and can not be carved out of the clay. Vermiculite in our country Xinjiang, the Kola Peninsula in Russia, Zimbabwe, Australia, South Africa and are produced in the United States. Vermiculite world has reserves of about 600 million tons, of which China and Russia accounted for about two-thirds of reserves, mainly in the United States and other South Africa. U.S. vermiculite mainly in Montana LIBBY, reserves of about 80 million tons, accounting for two-thirds of the total reserves of the United States of vermiculite; South Africa total reserves of about 73 million tons, the main origin Palabora region, its reserves account more than 90% of South Africa's total reserves of vermiculite; the former Soviet Union there are more than 20 vermiculite deposit, which is large and 波达宁 Dov Cole deposits, the estimated total reserves of about 200 million tons. Our vermiculite widely distributed, but are located in the northern part of our country, mainly in Xinjiang, Hebei, Inner Mongolia, Liaoning, Shanxi, Shaanxi and other provinces; in Sichuan, Henan, Hubei and Gansu and other provinces are also distributed, mainly in metamorphic zone. The largest and most representative of Xinjiang Yuli and Braque dry vermiculite quarry, the reserves accounted for 90% of total reserves, ranking second in the world (after South Africa), prospective reserves of 100 million tons, of which 2 ore body has proven reserves of 14 million tons, is the world's rare large deposits, burning results show that Xinjiang vermiculite expansion times, fewer impurities and other advantages. It followed Lingshou vermiculite aureus main origin, Donghai county, open territory is rich in mineral vermiculite, especially in the Xinjiang Production and Construction Corps, Second Division thirty-three group vermiculite quarry, where the vermiculite contains not only rich, but good quality. Golden vermiculite golden vermiculite vermiculite vermiculite characteristic chemical formula (Mg, Ca) 0.7 (Mg, Fe, Al) 6.0 [(Al, Si) 8.0] (OH4.8H2O). Monoclinic, usually flaky. Brown, yellowish or bronze. Oil sheen. Hardness of 1 to 1.5. Density of 2.4 ~ 2.7g / cm3, vermiculite at 800 ~ 1000 ℃ firing, rapid expansion of volume, increased 6 to 15 times as high as up to 30 times. The average bulk density of the expanded vermiculite is 100 ~ 200Kg / m3 due to expansion of the role of the calcined vermiculite have small air compartment, it has excellent insulation properties. 4 edit expanded vermiculite Vermiculite Vermiculite is a hydrate Shijie Shao, it was massive, flaky. Interlayer water molecules by high temperature burning, volume increased 6-15 fold. Rich in nitrogen, phosphorus, potassium, aluminum, iron, magnesium, silicate and other ingredients. Vermiculite have a higher charge of several layers, it has a high cation exchange capacity and strong cation exchange adsorption capacity. Features are: light weight, good water and fertilizer adsorption properties, does not rot, use 3--5 years (unlike humus, coconut shells clothing and other perishable). Raw vermiculite ore after calcination, an expanding vermiculite. Vermiculite conventional particle size specifications are 0.5-1mm, 1-3mm 2-4mm, 3-6mm, 4-8mm, 1-6mm etc. Also, follow customer production needs to produce other size models. Vermiculite vermiculite ore from birth through high-temperature roasting, screening, grinding into powder. The main models are 20-40 mesh, 40-60 mesh, 60-80 mesh, 200 mesh, 325 mesh. It applies to: Housing insulation equipment, household refrigerator, car muffler, sound stucco, safes and vaults lined pipes, boiler protection thermal clothes, ironworks ladles, firebrick, insulating cement, automotive insulation equipment, aircraft insulation equipment, cold storage insulation equipment, bus insulation equipment, wallboard water cooling tower, steel annealing, fire extinguishers, filters, refrigerator, linoleum, roof panels, cornice, dielectric gates plate, burnt wallpaper print, outdoor advertising, painting, increasing the viscosity of paint, photography soft wood with fire cardstock, gold and bronze ink, paint the outside supplements. Agriculture, agriculture, vermiculite used as a soil conditioner, because it has good cation exchange and adsorption, can improve soil structure, water storage soil moisture, improve soil permeability and water, so that the soil becomes acidic neutral soil; buffer vermiculite can also play a role, hindering the rapid changes in PH value, so that slow-release fertilizer in crop growth medium, and allowed to slightly excessive use of fertilizers and plant no harm; vermiculite also provided to the crop self-contained K, Mg, Ca, Fe and trace amounts of Mn, Cu, Zn and other elements. Absorbent vermiculite cation exchange properties and chemical composition, it plays a fertilizer, the multiple role of water, water, air and mineral fertilizers. Test showed that: 0.5% of the expanded vermiculite incorporated in fertilizer, can improve crop yields 15-20%. Horticulture horticulture, vermiculite can be used for flowers, vegetables, fruit cultivation, breeding and other aspects. Except for potting soil and regulators, but also for soilless cultivation. As planting potted trees and grass nutrition business seedbed for transplanting plants and transport in particular. Vermiculite can effectively contribute to the stability and development of plants and seedlings of root growth. A long time to provide moisture and nutrients necessary for plant growth, and can maintain a stable root sunshine temperatures. Vermiculite can crop can get enough water and minerals from the early growth, and promote rapid plant growth, increase yield. 5 Product specifications edit vermiculite product specifications: 0.5-1mm, 1-3mm, 2-4mm, 3-6mm, 4-8mm. The main models are 20-40 mesh, 40-60 mesh, 60-80 mesh, 200 mesh, 325 mesh. 6 vermiculite edit vermiculite is exfoliated vermiculite and a dose of adhesive, after hot or cold and made of sheet metal. The plate with insulation, insulation, fire protection and so on. This product can be used in fire door core, fireplace lining, wall materials. Vermiculite is a new type of inorganic materials to expanded vermiculite as the main raw material, mixed with a certain proportion of inorganic binder, after a series of processes from the high temperature, fire prevention, environmental protection, thermal insulation, sound insulation, not sheet containing harmful substances. Not produce gas hazard to human health at high temperature heating to 1200 ℃, the burning properties of A-level. Vermiculite was widely used abroad to construction, shipbuilding, metallurgy, electric power, aerospace and other fields; vermiculite can be applied to furniture, firewall, ceiling, can be used to fire exits, coated steel beam, pipeline coating, fireplace The liner, partition walls and the like. 1, the fire door core doors; 2, advanced kitchenware, furniture; 3, the hull plate; 4, fire exits, ventilation system; 5, commercial banks, libraries, hotels, restaurants, entertainment venues, high-end residential, general residential; 6 , furnace insulation; 7, fireplace insulation; 8, industrial insulation materials.